#Expandable Poly Propylene Foam

[parknonwovenindia]

10 things to keep in mind about medical nonwoven fabrics

Medical non-woven fabrics, as the ultimate packaging materials for sterilised medical products, and for significant medical applications such as body coveralls, sheets, caps, covers, face masks filter media and more. These medical nonwovens have undergone continual update and innovation owing to the swift development and supply need. The reasons are its sustainability, durability, and range of purposes.

Medical nonwoven fabrics have effectively entered the disinfection supply. Manufacturers are further supplying to various hospitals and pharmacies, making it one of the most critical parts of the medical supplies of the healthcare and hygiene industry.

You must pay attention to these ten features of medical nonwoven fabrics in order to monitor their quality.

Medical nonwoven fabrics differ from nonwoven fabrics in general and composite non woven fabrics in particular.

General non-woven fabrics do not have bacteria resistance.

Composite non-woven materials offer a good waterproof performance and low air permeability and are used in surgical gowns and surgical bedsheets.

Spun-bond, melt-blown, and spun-bond (SMS) methods are used to create medical nonwoven fabrics. It’s made by pressing and offers antibacterial, hydrophobic, breathable, and dander-free properties. It is used for sterilised items’ final packaging. It is disposable need no cleaning.

Non-woven fabric quality criteria: Medical non-woven fabric used for the coverall, suitable media for surgical wears, coverall, shoe covers and hair caps, surgical face masks, particulate respirators, and cartridge filters, sanitized medical equipment must meet the physical and chemical requirements.

Non-woven fabric is safe to use: The correct term for medical nonwoven fabric is typically 2 to 3 years, with the validity period of products from different manufacturers varying somewhat. Please follow the usage instructions.

The sterile objects packaged in medical non-woven fabric should have a 180-day expiration date and must not get affected by sterlization. The nonwoven fabric used to filter media for masks, coverall, suitable media for surgical wears should have a weight of 55 to 95 GSM.

When using medical non-woven fabric to package coverall, suitable media for surgical wears, coverall, shoe covers and hair caps, surgical face masks, particulate respirators, and cartridge filters, one must adopt a closed packaging method. Nonwoven fabrics should be packaged in two layers. Repeated folding can create a lengthy curving channel that keeps microbes out of the package.

The internal results are often altered after high-temperature sterilisation of medical non-woven fabric, affecting the sterilisation medium’s penetration and anti-bacterial effectiveness. As a result, medical nonwoven fabric should not be sterilised many times.

Due to the obvious hydrophobic qualities of nonwoven textiles, bulky and heavy metal equipment may be sterilised at high temperatures, and condensation water forms during the cooling process, making wet packs simple to make. As a result, pad water-absorbing materials in large equipment packages, limit the sterilizer’s loading capacity appropriately, leave spaces between sterilisation packages, extend the drying time correctly, and avoid wet bags.

Medical non-woven fabrics are related to the sterilising quality of medical devices, despite the fact that they are not medical equipment. Due to the reason that they ensure sterility, hence impacting the overall sterilization quality of the medical device when used as a packaging material.

Quality of the nonwoven fabric: To assure the quality of the items utilised, check the physical and chemical qualities of the medical non-woven fabric.

PARK Nonwoven owns the most advanced melt-blown line and the latest technology assures a steady, stable quality for various mask media such as — surgical face masks, particulate respirators and cartridge filters.

[madaan]

Unlocking Innovation with Expandable Poly Propylene Foam (EPP Foam) — A Parknonwoven Exploration

Introduction:

In the realm of advanced materials, Expandable Poly Propylene Foam, commonly known as EPP Foam, stands out as a versatile and innovative solution. In this blog post, we delve into the remarkable characteristics and applications of EPP Foam, highlighting the expertise and offerings from Parknonwoven.

Understanding EPP Foam:

EPP Foam is a lightweight, expandable material celebrated for its exceptional properties. Its unique cell structure provides outstanding impact resistance, thermal insulation, and flexibility. As a go-to choice for industries seeking durability and versatility, EPP Foam has found applications in various sectors, ranging from protective packaging to automotive components.

The Versatility of EPP Foam:

One of the defining features of EPP Foam is its expandable nature, allowing for intricate designs and precise molding. This characteristic makes it an ideal material for applications where a custom fit and impact protection are paramount. EPP Foam's resilience and flexibility make it an indispensable solution for industries that prioritize both form and function.

Parknonwoven's Commitment to Quality:

As a trusted provider in the realm of advanced materials, Parknonwoven stands at the forefront of delivering top-notch EPP Foam solutions. Their commitment to quality and innovation ensures that clients receive materials tailored to specific industry needs. The blog sheds light on how Parknonwoven's expertise contributes to the successful integration of EPP Foam in various applications.

Applications Across Industries:

From safeguarding delicate electronics during shipping to providing impact protection in automotive applications, the blog explores the diverse applications of EPP Foam. Real-world examples illustrate how this advanced material has become an integral part of efficient and reliable product protection.

Conclusion:

Expandable Poly Propylene Foam (EPP Foam) emerges as a game-changer in the world of advanced materials. This blog serves as a comprehensive guide, offering insights into the remarkable properties and applications of EPP Foam, with a focus on Parknonwoven's expertise in delivering high-quality solutions. As industries seek innovation and reliability, EPP Foam stands as a beacon, unlocking possibilities for a wide range of applications, supported by the excellence of Parknonwoven.

Experience superior protection and versatility with our Expandable Polypropylene Foam, commonly known as EPP foam. It offers lightweight, durable cushioning for various applications.

[juniperpublishersajop]

Polyurethane: Recent Engineering Contributions

Abstract

Polyurethane is one of the most versatile polymers which stands out with a wide range of tunable properties such as chemical stability, flexibility, abrasion and scratch resistance, toughness and biodegradability. It is a unique polymer containing alternating soft and hard segments. This review covers the most recent (2018-2019) engineering research contributions done for the synthesis, properties and applications of the polyurethane foams, coatings, adhesives, sealants, elastomers, composites and insists on the important aspects and realizations related to the polyurethane flammability and acoustic.

Keywords: Polyurethane Synthesis; Applications; Properties; Flammability; Acoustics

Abbreviations: AC: Alternative Current; BPAF: 4,4’ [2,2,2,-trifluoro-1-(trifluoromethyl)ethylidene] bisphenol; CNT: Carbon Nano tube; DAP: Dimer fatty acid band polyol; DC: Direct current; DMA: Dynamic mechanic analysis; DSC: Dynamic scanning calorimetry; DTP: N,N’,N’’-tri(dietoxy) phosphoramide; EG: Expanded graphite; EMD: Non-Reactive Phosphonate; EPUUS: Ureaurethane elastomer; FGO: Functionalized graphene oxide; FHPO-PO: Phosphorous Containing Polyether Polyol; FR: Fire Retardant; FTIR: Fourier Transform Infrared Spectroscopy; FTPU: Fluorinated Thermoplastic Polyurethane; G: Graphene; GO: Graphene oxide; HFBA 2,2,3,3,4,: heptafluoro-butiric acid 2,2-bis-hydroxymethyl-butyl ester; HRR: Heat release rate; HPU: Hyper Branched Polyurethane; LMPET: Low Melting Polyester; LOI: Limited Oxygen Index; MW: Molecular Weight; PEG: Poly(ethylene glycol); PHRR: Peak Heat Release Rate; PPG: Poly (propylene glycol); POSS Polyhedral Oligomeric Silsequioxanes; PU: Polyurethane; PU FR: Polyurethane with FR; RO: Rape seed oil; SEM: Scanning Electron Microscopy; SPB: Soybean Oil Based Polyol; TEM: Transmission Electron microscopy; TGA: Thermo gravimetry analysis; THRR: Total heat release rate; THR: Total heat release; TPIA: Acylhydrazine; TPID: Disulfide bonds; TPU: Thermoplastic polyurethane; VOCs: Volatile organic compounds

Introduction

Polyurethanes (PUs) constitute one of the most versatile class of macromolecular compounds known nowadays. They can contain a diversity of functional groups such as ether, ester, amide, urea, biuret, alophanate, uretidione, carbodiimide, isocyanurate, along with the urethane one (-NH-CO-O-) which open possibilities to react with many other components. PUs are synthesized by polycondensation reaction in which the macromolecular chain increases as the reaction progresses. This reaction can produce linear, slightly branched, or hyper branched macromolecules like in thermoplastics or they may have a crosslinked network leading to thermosetings. A recent kinetics study highlights the difficulties in quantifying the synthesis of linear PUs [1]. The main chemicals used for PU synthesis are polyols, isocyanates, and chain extenders having hydroxyl or amine group. PU contains in its macromolecules soft and hard segments; the former are made by the reaction between isocyanate and polyol, and the latter by the reaction between isocyanate and chain extender, both these components having 2 or 3 functional groups. In the PU macromolecule the polyol provides the elasticity, and the isocyanate provides the mechanical strength. Recently it has been reported new types of PUs made by the polyaddtion participation of diisocyanates. To perform the polyaddition with diols in order to obtain PU, mostly methylene diphenyl diisocyanate and hexamethylene diisocyanate were chosen [2]. A method for solving a system of bulk polyaddition of 2,4-toluene diisocyanate with 1,4-butanediol process balance equations, allowing the determination of the kinetic parameters is presented. The approach provides an opportunity to associate kinetic parameters with the average molar mass of the mixture and thus with the viscosity [3].

Beside PU as a simple polymer, it is also used in various types of composites together with other compounds. These can be molecular composites, fiber composites, and nano filled composites. Like in the case of other groups of composites the interaction matrix-filler plays an important role, for instance for PU nano composites the interface PU-nanofiller in cases of special silica, polyhedral oligomeric silsequioxanes (POSS), carbon nano tube (CNT), graphene (G), graphene oxide (GO), metallic nano particles are also very important [4]. PUs are processed to obtain various products such as flexible and rigid foams for construction and furniture items, sport equipments, coatings, adhesives, sealants, elastomers, fibers, medicine products. Adding other components beside polyols and isocyanates during the PU synthesis contributes to the improvement of some PU properties. For instance, tridecanoic acid added to toluene diisocyanate based PU is able to extend its working time with minimal changes to physical and chemical properties [5]. Another example is that of recycled polyol and benzimidazole grafted onto PU to enhance the surface hydrophilicity [6]. Due to the effects of PUs on human health, the replacement of toxic isocyanates with biocomponents is one of the main recent research direction related to PU synthesis [7]. The raw components necessary for the synthesis of PU can be obtained from natural products to substitute petroleum as their basic resource. Compared to isocyanates, the biobased raw materials possess many advantages like biodegradability, sustainability, nontoxicity and environmentally benign attributes [8]. Polyester polyols from renewable resources have gained important interest in the PU domain. Without petroleum-based polyols, castor oil polyols have been used as soft segments in PU [9]. Biobased PUs was also obtained from fatty acids with double functionality synthesized through cross-metathesis of oleic acid and oleic alcohol [10]. With azelate polyols produced from n-alkanediols with even number of CH₂ repeating units thermoplastic PUs (TPU)s result with increased hardness, tensile and tear strength [11].

From crystalline azelate polyol and amorphous azelate polyol two sets of segmented TPUs were prepared. Their study showed that the crystalline azelate polyols are suitable for dynamic applications and the amorphous ones are suggested for coatings and adhesives [12]. The product of 1-butene methatesis of canola triacylglicerol with shortened structure, terminal double bonds and oligomers was used to synthesize novel polyols and PU foams. The study highlights that one can improve and control jointly the mechanical properties and deformation recovery ability of biobased PU foams by combining primary functional group oligomers, and high molar volume molecules in the polyols [13]. Dimer fatty acid-based polyol (DAP) was used to substitute petrochemical DAP and has been used to produce rigid PU foam. The research data indicated that bio-polyol DAP can substitute partial petrochemical polyol to produce rigid PU foams with good comprehensive performance [14]. A series of PUs nonisocyanate were produced from the transurethanization between 2,5-bis(hydroxymethyl)furan and dicarbamates obtained from metoxycarbonylation of diamines with dimethyl carbonate [15]. Other example of studies using bio-components will be presented. This paper will review the most recent studies done on PU products like foams coatings, adhesives, sealants, elastomers, and composites, and on flammability and acoustic properties.

Research Contributions

Foams

During the production of PU foam using aminophosphonated polyols the thermal resistance was confirmed and a lower peak of heat release rate (PHRR) and lower smoke production was found [16]. A polyol obtained by glycolysis of waste rigid PU foams was used to produce a new rigid foam. This new foam showed higher compressive strength, thermal insulation, and self-extinguishing property compared with conventional foam [17]. Liquefied rice husk with different NCO/OH ratios was used to produce PU foams [18]. The effect of crosslinking agent on the properties and morphology of semi-rigid waterborn PU (WPU) foam was studied. The crosslinking density of the foams was adjusted by varying the amount of triethanolamine. The most characteristics processes to produce the foam are related to foaming and gelation. Increasing the amount of triethanolamine the crosslinking density increased and the swelling ratio decreased from 294.9 to 194.7%, Tg increased from -14.2 to-8.6 ⁰C [19]. To optimize the formulation of a PU foam for better sound absorption, a study was carried out with a response surface methodology to investigate the effects of different variables, catalysts and polyethylene fiber. For correlating experimental data, a mathematical model was developed, and model parameters were optimized by adoptive simulated annealing algoritm [20]. The optimization of rigid WPU foams obtained from a polyol functionalized with GO has been the object of a recent study. A series of rigid WPU foams were synthesized by varying either the isocyanate index, catalyst amounts, the surfactant contents or a combination of these three components. The obtained results show how controlling WPU formulations allows to improve important properties like mechanical and thermal of rigid WPU foams containing GO [21].

The effects of shear thickening fluid content and SiO₂ size on the cell structure, mechanical performance, acoustic absorption, and thermal performance of shear thickening fluid/PU foam were explored [22]. Adding to a flexible PU foam a negative powder modified with a silane coupling agent led to the improvement of important properties such as thermal stability, tensile strength and resilience [23]. Diferential scanning calorimetry (DSC), thermo gravimetry analysis (TGA), and Fourier transform infrared spectroscopy (FTIR) were used to measure the thermokinetics and degradation of soybean oil-based PU foam. The thermodynamic properties and thermal stability during the degradation were also studied. The degradation included 3 or 4 step-degradation profiles. As the soybean oil content or NCO/OH molar ratio increases, the thermal stability of the foam, the activation energy, and reaction rate increased [24]. A technique for the production of new cheaper components able to substitute polyols for the production of PU-polyisocyanurate foams is presented. The influence of the components on the foam flammability, thermal properties and other characteristics was examined [25].

Coatings

New biobased PU coatings with lignin were studied. A diisocyanate obtained from lignin-derived vanilic acid and crosslinked with three different nonchemically modified technical lignins namely mild acetone organosolv, kraft, and soda. The results of the research showed that the reaction of a ligninderived biobased diisocyanate represent an interesting way for the production of TPU coating. The study also showed that the reaction of lignin-derived biobased diisocyanate represents an interesting way for the production of TPU coatings with a high biomass content that can find applications as an alternative to petroleum products [26]. By using stoichiometric proportions of PU polyamines and aliphatic epoxies as crosslinker, coatings were produced. These new products possess flexibility at low temperatures and resistance to chemicals, but their thermostability is low [27].

Fully biobased polyester polyols were prepared and used for PU coatings by reacting with diisocyanate. The mechanical, chemical and thermal properties demonstrated that the renewable sources used for the production of PU coatings can be good substitutes for petroleum products [28]. The structural and morphological characteristics of functionalized graphene oxide (FGO)/PU coatings were characterized by transmission electron microscopy (TEM) and scanning electron microscopy (SEM). Beside a chemical reaction between the two components they are able to effectively enhance the thermal, flame retardant and mechanical properties of the coatings [29]. Siloxane-semifluorinated PU coatings were synthesized for robust underwater applications [30].

The state-of-the-art of isocyanates and polyisocyanates of the various PU crosslinking mechanisms and the corresponding applications are presented. Aspects ranging from the replacement of oil-based PU components by biobased equivalents to the development of new synthetic pathways for the production of polyhydroxy polyurethanes for coatings have been also investigated [31]. A study of a PU network of polyaniline, polym- amino phenol and poly-α-anisidine coated on a mild steel panel was reported. The coated films showed excellent corrosion protection in the following order: PU-polyanilin>PU-poly-maminophenol> PU-poly-α-anisidine [32].

As an alternative to PU coatings based on toxic components, the synthesis of poly (hydroxy urethanes) by cyclocarbonate aminolysis constitutes a solution to avoid emissions of volatile organic compounds (VOC)s. Thus, developing their technology became important [33]. Using polyblends of WPU and polyacrylate porous-coated fabrics for synthetic leather were produced. The H bonds between the polymers were proved by FTIR and DSC. The best performance of coated fabrics was found at the ratios from 15/85 to 30/70 polyacrylate /PU [34]. Novel PU coatings were produced by polycondensation of hydroxylationterminated poly (L-lactide) (PLLA) functionalized graphene (G-g-PLLA) and isocyanate terminated PU oligomer with dimethylsiloxane. The functionalized PU was able to hydrolyze in seawater and the hydrolysis rate decreased with the increase of polydimethylsiloxane amount. The new coatings exhibited good antifouling [35].

Polymers containig spirooxazine were grafted and doped with WPU used as an environmentally friendly coating. The obtained films had improved water resistance, mechanical and photochromic properties [36]. TPU was blended in tetrahydrofuran with polyphosphate containing furfuryl and trifluorothoxy groups. Using FTIR, DSC, scanning electron microscopy (SEM) and limited oxygen index (LOI) the obtaining films were analyzed. The results demonstrated that the addition of 20% phosphazene in the blend enhanced the tensile strength by about 110% and decreased the elongation at break by nearly 13% [37].

PU synthesis and film forming using the asymmetric cyclic aliphatic diisocyanate -isophorone diisocyanate with acetylated and pristine partially hydrolyzed amylopectine/white dextrin as a crosslinker has been studied [38]. From isophorone diisocyanate, poly (ethylene glycol), aminopropyl terminated poly (dimethyl siloxane) and 1,4-butandiol via two-step polycondensation, new PU membranes were produced [39]. To obtain a pH responsive hybrid films different amounts of 2-(diethylamino) ethyl methacrylate and PU based on isophorone diisocyanate were used for heavy metal ions removal. The study revealed that functional groups of 2-(diethylamino) ethyl methacrylate are the main sorption sites for the metal ions [40].

Adhesives

A PU powder used as adhesive was synthesized by solution polymerization. The influence of molar ratio of –NCO to –OH, neutralization and types of solution dispersion on the properties of the adhesive were studied. Excellent adhesive properties were found, and that the adhesive thermostability could meet the requirements of industrial gluing for packaging, lining and footwear [41]. A research concluded that WPU could enhance its adhesive characteristics with materials of different natures and structures [42]. A review compares the properties and the use of petrol-based PU with biobased PU for adhesive technology. To reduce the VOCs, PU based on castor oil was preferred as bio raw material [43]. A study insists on the role of accurate selection of diisocyanate -which induces the hard segments- on the viscoelastic and the adhesion properties of PUs. The polyblend studied consists of a mixture of a macrodiol of hydroxyl terminated polybutadiene, polypropylene glycol (PPG) and isophorone diisocyanate necessary to develop the urethane linkages. The controlled quantities of hard and soft segments resulted in better adhesive properties and the balance is realized by the selection of the isophorone diisocyanate [44].

By incorporating synthetic glycerol mono -methacrylate, underwater PU adhesives were produced. The study confirmed that this incorporation induced increasing cohesion and adhesive strength superior to that of pure PU [45]. A new PU sealant for insulating glass based on a nucleophilic substitution reaction between the p-chlorophenol-terminated PU prepolymer and a poly-functional hyper branched polyamine has been synthesized. After crosslinking-curing it was found that the sealant is applicable in a wide temperature range, is not sensitive to moisture, is easy to store, and does not corrode the substrate; all of these as well as its mildew resistance and low cost [46].

PU Elastomers

Poly (ethylene glycol) (PEG) grafted GO was blended with PU elastomer. Their interaction was produced by H bonding. Due to it the strength and toughness of vulcanizate rubber were significantly improved and the blend Tg shifted to higher temperature [47]. Two PU elastomers, one having acylhydrazine (TPIA) and the other disulfide bonds (TPID) were synthesized, and their self-repairable ability and reprocess ability have been investigated. The conclusion of the study was that TPIA elastomer can be repaired under acidic conditions, and the TPID can autorepair under visible light at room temperature [48]. In the case of a polyblend of epoxidized natural rubber/TPU it was found that rice husk ash particles had stronger interactions with epoxidized natural rubber and provided enhanced mechanical properties to the rubber [49]. TPU elastomers having aliphatic polycarbonate soft segments and hard segments made by 1,1’-methanediylbis(4- isocyanato-cyclohexane) or 1,6-diisocyanatohexane and a combination of two chain extenders were synthesized in one-step catalyzed polyaddition [50].

To evaluate the effect of rape seed-oil-based (RO) polyol on the properties of tested urea urethane elastomers (EPUUS) was the objective of a new study. FTIR, thermo gravimetry analysis (TGA), DSC, DMA, static tensile strength and physico-mechanical tests were applied. The use of RO polyol in polyol premixes changed the chemical structure of EPUUS showing a modification in the amount of H-bonds and the degree of phase separation. An increase in Tg of the soft phase was also established [51].

Composites

Thin laminated composite has been produced by blending TPU with low-melting polyester (LMPET) and Kevlar fibers. The presence of Kevlar enhances the tensile properties and flame resistance. The tensile strength of the composite reaches 18.85 MPa and the combustion rate is reduced [52]. The effects of temperature, humidity and automotive fluids on the long-term durability of the two types of glass fiber reinforced PU has been investigated. Variation of mass, flexural strength and viscoelastic response are determined in order to find the changes of the composite [53]. A comparison of TPU/GO and TPU/reduce GO showed that the reduction of GO is not always necessary [54]. The dynamo- mechanical, thermal and mechanical characteristics of long glass fiber reinforced TPU / poly (butylene terephthalate) polyblend have been studied. A good compatibility was found between the two polymers. DMA showed that the TPU content had some influence on dynamic- mechanical properties and the Tg of the long glass fiber reinforced polyblend . DSC indicated that with the increase of TPU amount the crystallization temperature, the melting point and the percent of crystallinity decreased. The TPU presence contributes to a remarkable increase of some mechanical characteristics but also produces a decrease of flexural and modulus of elasticity [55].

Using melt-blending a hybrid made of a shape memory TPU with GO and montmorillonite (MMT) was produced. Thermal analysis showed that GO-MMT enhanced the thermal decomposition of TPU composites [56]. Expandable graphite (EG) is often added to PUs to prevent their flammability. Such graphite was incapsulated in melamine cyanurate and after that was added to rigid PU. It was established that the mechanical properties of the polymer were improved. This composite decomposes faster and produces more smoke than the PU without EG. The obtained data show that melamine cyanurate and EG have a synergistic enhancing effect on the flame retardancy of the composite [57]. A composite made of PU reinforced with sugar palm fiber and glass fiber is recommended to be used in applications that require resistance to high temperature [58]. Carbon fiber-GO reinforcement improved thermo-mechanical and thermal stability of PU due to the carbon fiber- PU improved interfacial interaction as well as the local stiffening of fiber-matrix interphase by the dispersed GO sheets [59].

A PU and red mud composite, the mud in micron particles uniformly embedded in PU, exhibited satisfactory mechanical performance and the compressive and flexural strength are, after complete curing, up to 38.6 and 12.4 MPa. It also displayed very good thermal stability, flame retardancy, storage stability, and reinforcement [60]. The heat conducting with focus on the enhancement of thermal conductivity of WPU composites through compatibility and feasibility of hybrid techniques is reviewed [61]. In a research PU foam was filled with paper waste sludge (5% by foam mass). It was found that the thermal conductivity, water vapor resistance, density, compressive strength, and modulus of elasticity were improved [62].

By using the ring-opening reaction of cyclic carbonate with excess amine and methanol to increase the molar mass of -NHɂ terminated non-isocyanate PU prepolymer, its performance was improved. By adding bisphenol A diglycidyl ether into the prepolymer a hybrid was obtained which has good mechanical properties, a Tg-49,1 ºC and a good thermal stability [63]. Applying a low melting point chain extender, the raw components being 1,4-butanediol and dimethyl propionic acid a study showed that with the decrease of the ratio of dimethyl propionic acid/1,4- butanediol the mechanical properties of the PU decreased [64]. To control the soft segment thermal properties and to enhance tensile strength, shape memory and low temperature flexibility, norbornen was grafted onto PU. This grafted PU demonstrated enhanced low temperature flexibility due to reduce restrictions of rotational and translation mobility [65].

A new molecular design was proposed by incorporating 2-ureido-4-[1H]-pyrimidone motifs in the backbone chains of PU to enhance the mechanical performance and using a triol functional Diels-Alder crosslinker to realize PU healable and recyclable [66]. New PUs made with homocubane (C’ı₀Hı₀O₂)- based diols and diisocyanates were synthesized. They are soluble in polar organic solvents, decompose at relatively high temperature, and the Tg is higher than those of commercial PUs. It is expected that these new polymers will find application in products that need thermally robust PUs [67]. One pot technique for the production of GO/(hyper branched PU)(HPU) has been presented. The composite obtained shows very good increase in the mechanical properties due to the covalent bonding realized between GO and isocyanate component and an excellent load transfer. Mild increase in stability towards thermal degradation and higher dielectric constant compare with HPU at low frequency was also found [68].

The effects of polyhydric alcohols on the mechanical and thermal properties, porosity and air permeability of PU composites have been studied. With increasing polyhydric alcohol amount, the tesile strength and Tg decrease remarkably. The swelling capacity and porosities of the PU/propylene glycol (PPG)-blended and PU/glycerol blended films increased with the increase of PPG or glycerol amount [69]. In composites TPU/wood flour the properties depend on the ratio between the components; it was established that the presence of the wood flower contributes to the increase of important properties such as density, hardness, water absorption, tensile modulus; impact and and abrasion resistance decrease [70]. The high electrical resistivity of blast furnace slag and fly ash make these materials an asset for use in rigid PU foams for insulation [71]. A PU/melamine formaldehide composite foam was prepared through foaming PU. The foam composite showed satisfactory fire retardancy and good comprehensive properties [72].

PU composites which could be used as damping materials with different amounts of hydroxyl silicone oil were prepared. The damping, mechanical properties, thermal stability and molecular groups were established. It was found that the composites with 8% hydroxyl silicone oil possess the best properties [73]. Sandwich composites made of a core of flexible PU foam and nonwoven poly (ethylene terephthalate) as the top and bottom panels were produced. The research found that such composites have functionalities of FR efficacy, acoustic absorption, heat insulation, electromagnetic shielding effectiveness and thus are suited for protective partitions [74].

Flammability

PU foams are in general flammable and their flammability is controlled by using flame-retardants (FR)s. Phenyl phosphonic acid and propylene oxide-based reactive FR polyol, together with limonene based polyol have been used for the preparation of FR/ PU foams. The phosphorous based polyols could be mixed with bio-based polyols to prepare highly fire retardancy and superior physico-mechanical rigid PU foams [75]. The study of a rigid PU foam showed that 3,3’,4,4’-biphenyltetracarboxylic dianhydride and 9,10-dihydro-9-oxa-(10-glycidoxypropilene)-10-phosphaphenantrene- 10-oxide lead to an increase in graphite in the fire residue and the formation of a better barrier to prevent burning by the condensed phase mechanism [76]. Rigid PU modified with microencapsulated red phosphorous, Mg(OH)₂, glass filler and hollow glass bead were prepared and showed that the fire retardancy and the combustion were improved [77].

A new, inherent, fire retardancy of the foams based on imide and oxazolidinone were investigated by LOI , vertical burning test and calorimetry. Cone calorimeter test data showed also that EG reduced the heat release rate (HRR), total heat release ( THR), and total smoke production. A low amount of EG added to PU increased the compression strength but as the amount increases the compression strength decreases [78]. It was found that the EG modified by poly (methyl methacrylate) and poly (glycidyl methacrylate) is an important product as a FR for foams made of PU-polyisocyanurate [79]. FR/ PU foams containing a nonreactive phosphonate (EMD) and EG were produced. This new complex increased the LOI and decreased the total heat release rate ( THRR), average effective combustion heat, peak heat release rate ( PHRR) and total smoke release of the PU foams [80].

New polyols containing 0.8-1.2 wt% boron and 7.9-8.5 wt% nitrogen were used to obtain rigid PU foams. LOI test as horizontal and vertical flammability tests showed reduced flammability and also improved thermal, dimensional stability and mechanical properties [81]. PU foams were also produced by mixing with a phosphorous containing polyether polyol (THPO-PO) and soybean oil-based polyol (SBP).Although the thermal stability of the foams decreased with the increase of THPO-PO amount, the flame retardancy was improved. LOI increased 40% .THPO-PO worked in inhibiting flame and forming phosphorous rich char layer [82]. A polyol made of mercaptenized castor oil and diethyl allyl phosphonate was used for preparing PU foams having different amounts of phosphorous. The closed cells amount in all the foams was above 95%.The results of flammability tests suggest that in the synthesis polyol could act as an essential FR for rigid PU foams ensuring fire safety [83].

The fire characteristics (heat and smoke) were studied using calorimetry test in the case of a composite made of rigid PU foams and flax fibers treated with a FR. The obtained research data showed that treated flax fibers besides improving the mechanical properties of the foam had a good prospect in reducing the fire hazard [84].

A new FR based on a P-N compound namely N,N’’N’’’- tri(diethoxy) phosphoramide (DTP) was synthesized and added to WPU foams. According to TGA data the combination restrained the decomposition, enhanced the residue at high temperature, higher LOI data were obtained and lowered the HRR. The cone calorimetry test indicated that the EG/DTP system jointly inhibited the fire intensity and the smoke production [85].

After a surface modification EG was introduce also in foams based on PU-imide. The foams exhibited outstanding enhancements compare to that of only pristine EG introduction in compressive strength, thermal stability and flame resistance [86]. Four wood-based wastes were incorporated into rigid bio-based PU foams; these were characterized by thermal and combustion properties. Filled PU foams with such wastes showed higher thermal and dimensional stability, however the thermal conductivities and flammabilities were similar to neat foam [87].

Acoustics

Using polycaprolactone diol, toluene diisocyanate, hydroxyl fluorosilicate and 2,4-diamino-3,5-dimethyl thiotoluene, a new Fluor silicon polyester PU was synthesized. The study of its properties indicates that it has an excellent water resistance which has acoustic performance, a low Tg and the fact that it is an ideal transparent product for underwater acoustics [88]. Using linear saturated aliphatic polyesters, methylene diphenyl diisocyanate and other reagents, high performance acoustic damping flexible PUs were produced. The study showed that sound proofing flexible PU foams under optimum conditions can be promising candidates for use as sound-insulating products [89].

With the finite element method PU sound absorbing panels were designed using for material formulation Comsol able to provide optimum performance of echo reduction with minimum thickness. The research shows that by judicious choice of matrix/ filler combination it is possible to achieve selective/broadband absorber for underwater applications [90]. Using Tung oleic acid-base polyol and polyether polyols a new biobased PU foam different from common PU foam was prepared. The study found that the biobased PU mean sound absorption coefficient and transmission loss can reach 0.515 and 21.389 dB [91].

Other Contributions

Fluorinated TPU (FTPU) elastomers based on 3-isocyanatomethyl- 3,5,5-trimethylcyclohexyl isocyanate poly(tetramethyl glycol) polycaprolactone and 4,4’[2,2,2-trifluoro- 1-(trifluoromethyl) ethylidene] bisphenol (BPAF) have been synthesized. The study of their properties showed that the thermal stability and mechanical properties are significantly improved by BPAF [92].

Fluorinated PUs (FPU)s having various amounts of fluorinated chain extender and the same amounts of poly (oxytetramethylene glycol) and diphenyl methane diisocyanate were synthesized in view to find the relationship between surface physico-chemical properties , the bulk microphase separation structures of these FPUs and their antifouling. The conclusion of the study is that the increased microphase separation of FPUs results in enhanced antifouling properties [93]. A WPU prepolymer was obtained based on poly(tetramethyleneglycol), isophorone diisocyanate and 2,2,3,3,4,4-heptafluoro-butyric acid 2,2- bis-hydroxymethylbutyl ester (HFBA) for a series of HFBA/WPUs; ethylenediamine was used as the chain extender. In vitro platelet and erythrocyte adhesion experiments revealed that increasing HFBA content also enhanced the hydrophobicity and reduced blood adhesion to the HFBA/WPUs [94].

The effect of the type of diisocyanates and glycols, degree of crosslinking, the amount of hard segments, crystallinity, the amount of hydrophilic groups on optical properties of WPU have been studied focusing on the matting effect and transmittance. The particle size of PU latex was the most important factor to influence the matting [95]. The effects TPU with various amounts of boron nitride has on DC and AC conductivities and the free volume have been investigated [96]. Results of dielectric/electrical studies of onion-like carbon/PU composite films in very broad frequency and temperature are presented in a study [97]. By studying the spinning technique and the fiber topology, it was found that the characteristics of the PU solutions influence the spinning process and is able to affect the fiber topology [98].

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Global Expanded Poly Propylene Foam Market 2019| BASF, SONOCO, DS Smith, Clark Foam Products Corporation

Global Expanded Poly Propylene Foam Market 2019| BASF, SONOCO, DS Smith, Clark Foam Products Corporation

A new research report on Global Expanded Poly Propylene Foam Market gives the Expanded Poly Propylene Foam a detailed forecast 2019-2014 and future prospects of the market. The report highlights major market programs, including market players, latest trends, technical progress and development opportunities in the global Expanded Poly Propylene Foam market, which helps industry experts and…

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Recycled Polypropylene Industry Global Market Size, Share, Sales, Revenue and Price with Forecast 2020-2023

Recycled Polypropylene Market: Inf         ormation by Process (Mechanical, Chemical), Source (Bottles, Films, Bags, Industrial and Agricultural Waste), Application (Packaging, Automotive, Building & Construction, Textiles), and Region — Global Forecast till 2023

Recycled Polypropylene Market Size To Expand at a Notable CAGR Of 6% During 2020 – 2023

Competitive Analysis

MBA Polymers Inc. (Austria), Veolia Polymers NL B.V. (The Netherlands), SUEZ (France), KW Plastics (US), Jayplas (UK), B&B Plastics Inc. (US), Custom Polymers (US), Joe's Plastic, Inc. (US), Ultra Poly Corporation (US), and PLASgran Ltd. (UK), among others.

Market Overview

Polypropylene is on the major thermoplastic polymers, with major application in the packaging, automotive, and building & construction industries. However, the waste from the polypropylene products degrade gradually when disposed in the landfills and take approximately 20 to 30 years to decompose completely. This has caused a major environmental concern due to the toxic additives such as lead, and cadmium used during the formulation of the products. This has been leading to the increasing need for recycling the waste polypropylene and reuse it in the major end-use applications.

Browse Complete Report Details @ https://www.marketresearchfuture.com/reports/recycled-polypropylene-market-7502

Market Segmentation

Recycled Polypropylene Market has been categorized into process, source, end-use, and region.

On the basis of process, the global recycled polypropylene market has been segregated into mechanical and chemical. The mechanical recycling is a well-established technology for recycling polypropylene and is projected to be the leading process segment during the forecast period. This can be mainly attributed to the various advantages offered by the process, part of the resources consumed for the production of the plastic materials is not wasted during the mechanical recycling and cost competitiveness over chemical process.

By source, the global recycled polypropylene market has been divided into bottles, films, bags, foams, industrial and agricultural waste, and others. The bottles segment accounted for the largest share of the global market in 2017. This is mainly due to the increasing consumption of processed food and beverages, which is mainly provided through plastic bottles manufactured using polypropylene. Robust growth of the food & beverages industry globally due to the rising population is expected to drive the market growth in the coming years.

Based on application, the market is segmented into packaging, automotive, building & construction, textiles, medical, electronics, and others. The packaging is the leading application segment and is projected to grow at the highest CAGR during the review period, owing to the rising demand for recycled propylene in the food packaging applications. In addition, the industrial packaging sector is booming which is further expected to favor the market growth. Regional Analysis

The global recycled polypropylene market has been segmented across five regions—Asia-Pacific, North America, Europe, Latin America, and the Middle East & Africa. The North American market held the largest share of the global market in 2017. The robust growth in plastic recycling technology and rising awareness regarding the impacts of plastic generated waste is driving growth of the regional market. Moreover, the strengthening environmental regulations pertaining to virgin plastic production has hampered the plastic production and hence fueled the demand for recycled plastic obtained from the waste. Furthermore, the rising automotive production based on recycled polymers in the region is driving the market growth.

Europe held the second-largest share of the market in 2017 on account of the regulatory environment regulations pertaining to the plastic wastes. The regional market in Asia-Pacific is expected to register the highest CAGR during the forecast period on account of the rapid growth of the packaging industry in the region.

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Global Expanded Poly Propylene Foam Market 2018 Perspective- BASF, DS Smith, Clark Foam Products Corporation and SONOCO

Global Expanded Poly Propylene Foam Market 2018 Perspective- BASF, DS Smith, Clark Foam Products Corporation and SONOCO

The research report investigate major market deliberation of Global Expanded Poly Propylene Foam Market after performing different intellectual and extensive analysis on Expanded Poly Propylene Foam industry. To gain better vision, insights, assets of the Expanded Poly Propylene Foam market segments, the report helps key vendors, Expanded Poly Propylene Foam manufacturersand end-users. The…

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Global Expanded Poly Propylene Foam Market Forecast to 2022- Clark Foam Products Corporation, BASF, DS Smith and SONOCO

The research study on Global Expanded Poly Propylene Foam Market organizes the overall perspective of the Expanded Poly Propylene Foam industry. This incorporates upcoming flow of the Expanded Poly Propylene Foam market together with an extensive analysis of recent industry statistics. It describes the Expanded Poly Propylene Foam market size as well as factors controlling market growth.…

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Dust Bag Filters: The Unsung Heroes of Clean Air

Introduction:

In the realm of air filtration, Dust Bag Filters quietly play a pivotal role in maintaining air quality. This blog dives into the significance of Dust Bag Filters, their applications, and why they are indispensable for industries prioritizing clean and healthy environments.

The Basics of Dust Bag Filters:

Dust Bag Filters are the silent guardians against airborne particles and contaminants. Their fibrous construction captures dust, dirt, and pollutants, preventing them from circulating in the air we breathe. This blog explores how these unassuming filters are anything but ordinary.

Applications in Varied Industries:

From industrial settings to commercial spaces, Dust Bag Filters find applications in diverse environments. Industries such as manufacturing, HVAC systems, and automotive benefit from their efficiency in trapping particles, ensuring a cleaner and safer workspace.

The Science Behind the Filtration:

Delve into the intricate design and construction of Dust Bag Filters. Their multi-layered structure ensures optimal filtration, capturing particles of varying sizes and preventing them from compromising air quality. Understanding this science emphasizes their importance in creating healthier indoor environments.

Why Choose Quality Dust Bag Filters:

Highlight the significance of investing in high-quality Dust Bag Filters. Quality filters not only provide better air purification but also contribute to the longevity and efficiency of HVAC systems and machinery. Choosing the right filter can lead to cost savings and improved overall system performance.

Maintenance Tips for Dust Bag Filters:

Provide practical tips on maintaining Dust Bag Filters for optimal performance. Regular inspection, timely replacements, and adherence to manufacturer recommendations contribute to prolonged filter life and sustained effectiveness.

Conclusion:

In conclusion, Dust Bag Filters may not be in the spotlight, but their impact on air quality is undeniable. This blog aims to shed light on the importance of these filters, emphasizing their role in creating healthier environments. For industries and individuals alike, understanding the significance of Dust Bag Filters is a step toward cleaner air and improved overall well-being.

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Expandable Poly Propylene Foam | EPP FOAM

Expandable Poly Propylene Foam (EPP Foam) is a versatile and lightweight material ideal for protective packaging and insulation. Park Nonwoven is a trusted provider of top-quality EPP Foam, offering durable and customizable solutions. Their commitment to excellence ensures that products meet the highest standards, providing reliable protection for various applications.

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Expandable Poly Propylene Foam | EPP FOAM

Expandable Poly Propylene Foam (EPP Foam) is a lightweight, versatile material known for its excellent impact resistance. Park Nonwoven stands as a trusted provider of high-quality EPP Foam, utilizing advanced manufacturing processes and superior materials. Their commitment to quality ensures durable, reliable, and precisely crafted foam products for various applications.

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Expandable Poly Propylene Foam | EPP FOAM

Expandable Poly Propylene Foam (EPP Foam) is a versatile and lightweight material known for its exceptional impact resistance and thermal insulation properties. Park Nonwoven takes pride in offering top-quality EPP Foam products, ensuring durability and reliability in applications ranging from packaging to automotive components. Choose Park Nonwoven for premium EPP Foam solutions.

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Expandable Poly Propylene Foam | EPP FOAM

Expandable Polypropylene Foam (EPP Foam) is a versatile and lightweight material renowned for its exceptional shock absorption and thermal insulation properties. Park Nonwoven takes pride in delivering top-quality EPP Foam products, ensuring durability and reliability. With a commitment to precision and innovation, Park Nonwoven's EPP Foam stands as a trusted solution for various industries, offering unmatched performance and peace of mind.

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Expandable Poly Propylene Foam

Expandable Polypropylene (EPP) Foam is a lightweight, versatile material with excellent shock absorption and thermal insulation properties. Ideal for packaging, automotive, and construction applications, EPP Foam by Park Nonwoven ensures top-notch quality, offering a durable and reliable solution. Trust in Park Nonwoven for premium EPP Foam that meets the highest industry standards.

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Unlocking the Potential of Expandable Poly Propylene Foam (EPP Foam): Park Nonwoven's Commitment to Excellence

In the world of materials engineering, innovation and versatility often go hand in hand. One remarkable material that embodies these qualities is Expandable Poly Propylene Foam, or EPP Foam. This article delves into the unique attributes and applications of EPP Foam while highlighting Park Nonwoven's exemplary commitment to delivering the highest quality EPP Foam products.

Understanding EPP Foam

Expandable Poly Propylene Foam, commonly referred to as EPP Foam, is a lightweight, durable, and versatile material with a wide range of applications across various industries. It is known for its remarkable combination of properties that make it indispensable in many contexts:

Lightweight and Strong: EPP Foam is incredibly lightweight while maintaining impressive structural integrity. Its ability to withstand substantial impact without deformation makes it ideal for applications where durability is paramount.

Excellent Thermal Insulation: EPP Foam exhibits outstanding thermal insulation properties, making it valuable for temperature-sensitive applications.

Energy Absorption: Its ability to absorb energy and distribute it evenly is crucial for shock absorption in packaging, automotive components, and sporting equipment.

Chemical and Water Resistance: EPP Foam is inherently resistant to chemicals and moisture, ensuring it remains stable and effective in demanding environments.

Recyclable: EPP Foam is environmentally friendly, as it is fully recyclable, reducing waste and promoting sustainability.

Diverse Applications

The versatility of EPP Foam is reflected in its numerous applications across industries:

Automotive: EPP Foam is used in automotive interiors, providing both safety and comfort, and in structural components to reduce weight while maintaining strength.

Packaging: It's a preferred material for protective packaging due to its excellent cushioning and shock-absorbing capabilities, ensuring the safe transport of fragile items.

Sports and Recreation: EPP Foam is found in sports gear like helmets, padding, and even in remote-controlled aircraft and drone components.

Construction: It's utilized for insulation, filling voids, and reducing structural vibrations in buildings.

Medical: EPP Foam is employed in orthopedic devices and medical packaging due to its biocompatibility and cushioning properties.

Park Nonwoven's Commitment to Excellence

For industries that demand the highest quality EPP Foam, Park Nonwoven has earned a stellar reputation as a provider of choice. Here's why they stand out:

Quality Assurance: Park Nonwoven places quality at the forefront of their operations. They adhere to strict quality control measures to ensure that their EPP Foam products meet the highest industry standards.

Custom Solutions: Recognizing that different industries and applications have unique needs, Park Nonwoven collaborates with clients to create tailor-made EPP Foam solutions that align with specific requirements.

Cutting-Edge Technology: Park Nonwoven continually invests in research and technology to remain at the forefront of EPP Foam manufacturing, delivering innovative solutions to their customers.

Environmental Responsibility: Park Nonwoven is committed to environmentally sustainable practices, reflecting their dedication to a cleaner and greener future.

In conclusion, Expandable Poly Propylene Foam, or EPP Foam, is a remarkable material with a wide array of applications across industries. When it comes to choosing a provider that ensures the highest quality EPP Foam products, Park Nonwoven shines as a leading and trusted supplier. Their commitment to excellence, innovation, and sustainability makes them the ideal partner for industries seeking top-tier EPP Foam solutions.

CONTACT US TODAY :

sales@parknonwoven.com 0124-4816111 Corporate Office: Park Non Woven Pvt. Ltd., Gurugram, HR

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EPP Foam: The Versatile Solution for Industry's Packaging and Insulation Needs

Introduction:

In today's rapidly evolving industrial landscape, the quest for efficient, versatile, and eco-friendly materials is a constant pursuit. Expandable Poly Propylene Foam, commonly known as EPP Foam, has emerged as a game-changer in industries where packaging and insulation are paramount. This blog delves into the many facets of EPP Foam and the services offered by a reputable provider, Parknonwoven.

EPP Foam: The Material of Choice:

1. Lightweight Durability:

EPP Foam boasts an impressive combination of lightweight construction and remarkable durability. It can withstand substantial physical stress, making it ideal for packaging fragile items, from delicate electronics to automotive parts.

2. Insulation Excellence:

The excellent insulation properties of EPP Foam make it a sought-after choice for industries where temperature control is critical. Whether it's for maintaining the cold chain in the food industry or providing thermal insulation in construction, EPP Foam is up to the task.

3. Eco-Friendly Appeal:

EPP Foam is not only efficient but also environmentally friendly. It is fully recyclable, contributing to sustainable packaging and insulation practices.

Parknonwoven: Your Trusted EPP Foam Partner:

Parknonwoven is a well-established provider of EPP Foam, offering a wide array of services that cater to various industry needs:

1. Product Consultation:

Parknonwoven's experts can help you select the right EPP Foam products for your unique applications. Their in-depth knowledge of the material ensures you receive the best solution.

2. Customization:

Every industry has specific requirements, and Parknonwoven understands this. They offer customization services, ensuring your EPP Foam products align perfectly with your precise specifications.

3. Quality Assurance:

Quality is a top priority for Parknonwoven. Their EPP Foam products are manufactured with high-grade materials and subjected to stringent quality control processes, guaranteeing top-notch performance and reliability.

4. Efficient Delivery:

Timely delivery is essential in industrial operations. Parknonwoven ensures your orders are processed promptly, helping you maintain a smooth and efficient production process.

Conclusion:

EPP Foam has transformed the way industries approach packaging and insulation. Its lightweight durability, insulation properties, and eco-friendly nature make it a standout choice. When seeking EPP Foam solutions, turn to Parknonwoven. Their commitment to excellence, customization options, and efficient delivery make them a trusted partner for all your EPP Foam needs. With Parknonwoven, you're not just getting a material; you're getting a comprehensive solution for packaging and insulation in today's dynamic industrial landscape.

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Global Expanded Poly Propylene Foam Market 2017- SONOCO, BASF, DS Smith and Clark Foam Products Corporation

Global Expanded Poly Propylene Foam Market 2017- SONOCO, BASF, DS Smith and Clark Foam Products Corporation

Global Expanded Poly Propylene Foam Market research report starts with basic introduction of Expanded Poly Propylene Foam market, basic definitions, end-user applications, classifications and industry chain structure. The report also predicts upcoming Expanded Poly Propylene Foam markettendencies by analyzing past market values and current Expanded Poly Propylene Foam market needs. Comparison of…