compound, which leads to urethane linkages in the backbone (-NH-C(=O)-O-). names can be found in the table below. wide range for a large number of application. This product has tremendous dynamic performance and abrasion resistance and is used where high frequency low loads are present. act as physical crosslinks and provide a restorative force when the thermoplastic urethane elastomer
), PT-15 FOAM This compound is not as good in dynamics, has a higher compression set, and slightly lower solvent resistance as Plei-Tech® 22. To reduce the Tg and to destroy the crystallinity, copolyesters are often prepared from a mixture
Polyurethanes (PUs) are a class of versatile materials with great potential for use in different applications, especially based on their structure-property relationships. Lupranol®,
Another important
Plei-Tech® 22 is a polyester compound developed by Pleiger Plastics Company as an alternative to Plei-Tech® 15. Excellent mechanical properties. Other applications of
Structural and mechanical properties of layered spray polyurethane foams, apparent core density approx. On the other hand, if the extent of cross-linking is very high, the final polyurethane product will be tough and rigid. Standard color is natural (cream), however color coding is available. linkages (-NH-C(=O)-NH-), which releases carbon dioxide that acts as a blowing agent
The versatile urethane chemistry allows for the production of a wide range of products including
(vulcanized) with a diol compound during molding. Since hard domains also occupy significant volume and Polyurethanes obtained from aromatic isocyantes and low molecular weight diols have high glass
hard or flexible and soft. discoloration on exposure to UV radiation is not an issue, whereas aliphatic isocyantes are preferred for
is stretched. Density ranges are from .35 g/cc to .60 g/cc. The mechanical properties effect of the BuNENA plasticizer on the polyurethane network was investigated using dynamic mechanical analysis as well as the tensile test. injection-molded parts, coatings, sealants, and adhesives. Maximum service temperature is 200°F. The three most important commercial aromatic isocyanates are toluenediisocyanate (TDI), diphenylmethane
PleiTech® 00 falls short of Plei-Tech® 22, Plei-Tech® 23, Plei-Tech® 24, Plei-Tech® 25 and Plei-Tech® 15 in solvent resistance. First, a low-molecular-weight polyol is reacted with an excess isocyanate to form an
insulations for commercial and residential buildings. Plei-Tech 15 offers excellent abrasion and cut resistance, and is well suited for high dynamic loading. This … 48 kg/m3, having two layers and polymeric matrix’ Mc = 740 were investigated. Maximum service temperature is 200°F. Plei-Tech® 00 is a polyester compound developed in conjunction with Plei-Tech® 22 to offer alternatives to Plei-Tech® 15. and for the manufacture of rapid curing adhesives and coatings. Polyurethane performs well for hardness, tensile strength, compression strength, impact resistance, abrasion resistance and tear strength. Both PTHF and PPO polyols have low melting temperatures and very low Tg's (190 - 200 K).1
All rights reserved. can be made without crosslinking (vulcanizing) the polymer chains. They are formed from the reaction of an organic diisocyanate with a diol
They can be thermosetting or thermoplastic, rigid and
(No properties are lost in this color transformation. Plei-Tech® 95 offers excellent performance in dynamic loading, shock absorption, and water environments. Plei-Tech® 10 offers outstanding cut, abrasion, and solvent resistance. higher molecular weight polyester polyols are crystalline greases. Segmented polyurethane prepared from a diisocyanate, OCN-R-NCO; a chain extender, HO-R′-OH; and a polyol building block. to the low polarity and high flexibility, PPG and PTMO polyols are liquid at room temperature, whereas most
Plei-Tech® 95 is not suited for applications involving solvents or petroleum based oils. The majority of commercial PURs are elastomers. Po-Hou Sung, Wen-Guey Wu, Graft copolymer networks of polyurethane and epoxy structures I. MDI and TDI are often used for the preparation of thermoplastic elastomers and foams, while
Plei-Tech® 22 is not suited for applications involving high dynamic loading. The highly elastic network
consists of alternating flexible polyether/polyester blocks and rather short and hard (aromatic) urethane blocks. Enhanced Mechanical Properties and Functional Performances of Cationic Waterborne Polyurethanes Enabled by Different Natural Phenolic Acids Yi Zhang Key Laboratory for Biobased Materials and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University, 483 Wushan Road, Guangzhou 510642, China based urethanes, probably due to PTHF's ability to crystallize under stress. Plei-Tech® 95 is available in hardnesses from 80°A to 75°D. Studied mechanical properties are contact pressures, stress distribution, … This product is also available as a foam which has tremendous dynamic performance and abrasion resistance. degradation. Typical applications are bumpers, diaphragms, rollers, and hydrocyclones. Most elatomeric polyurethanes are either polyester or polyether based. have high strength, high rigidity or high flexibiltiy and toughness. However, polyethers are usually more expensive than polyesters. Maximum service temperature is 190°F. Polyurethane Properties and Design Considerations. to the low polarity and high flexibility, PPG and PTMO polyols are liquid at room temperature, whereas most
more demanding applications, like exterior coatings. The soft segments comprise the larger portion of the elastomer and, therefore, determine the
flexible and rigid foams, solid elastomers, extrusion and
Standard Color is amber, however this product is not color stable. It is sometimes copolymerized to reduce the crystallinity in the caprolactone based oligomer. They can be thermosetting or thermoplastic, rigid and hard or flexible and soft. Our understanding of how to seize these opportunities allows Precision Urethane to provide “Flexible Solutions Through Polymeric Innovation.” Maximum service temperature is 275°F. Many polyester polyols are made from adipic acid and ethylene glycols (polyethylene adipate), or from
susceptibilty to microbial attack and the tendency of aromatic urethanes to discolor (yellow) when
Available from 60°A to 88°A, and can be colored. Two major drawbacks of PURs are their
They are formed from the reaction of an organic diisocyanate with a diol compound, which leads to urethane linkages in the backbone (-NH-C(=O)-O-). Its natural translucency permits easy inspection of the encapsulated assemblies and the flexibility and strength of the polyurethane helps protect the assemblies from damage. Thermoplastic polyurethane (TPU) is a polymer material that has high ductility, good biocompatibility and excellent abrasion resistance. Plei-Tech® 10 is a very high performance polyurethane that is best suited for the most demanding applications. Another important polyol is polycaprolactone diol. together with their chemical structure and trade
They
Only available in natural color (cream). Plei-Tech® 00 offers outstanding tear strength, good abrasion resistance, excellent resistance to oil products, and is suited for moderate dynamic loading. This material has higher tensile strength, tear strength, and flexlife than standard Plei-Tech® 22 in the same durometer ranges. However, they are more expensive. Acclaim® (Covestro),
© Copyright Pleiger Plastics Company. For special applications that are subject to extreme mechanical loads, the density of the PUR/PIR rigid foam can be increased to 700 kg/m³. and TDI are often prefered for coatings, sealants and adhesives. butanediols and adipic acid (polybutylene adipate). Mechanical Properties of Additively Manufactured Thermoplastic Polyurethane (TPU) Material A ected by Various Processing Parameters Tao Xu 1, Wei Shen 2, Xiaoshan Lin 1 and Yi Min Xie 1,* 1 Centre for Innovative Structures and Materials, School of Engineering, RMIT University, Melbourne 3001, Australia; s3789870@student.rmit.edu.au (T.X. Plei-Tech® 15 performs well in solvent and oil environments, and is available in hardness from 60°A to 60°D. Ainsi, ces plastiques aux vastes applications sont utilisés dans un grand nombre d'industries. This material is ideal for bumpers and cushions which require high displacements. Rigid foamed products with a closed cell morphology are used as
Poly[(diethylene glycol)-alt-(1,6-hexamethylene diisocyanate)], Poly[(1,4-butanediol)-alt-(4,4'-diphenylmethane diisocyanate)], Poly[(ethylene glycol)-alt-(4,4'-diphenylmethane diisocyanate)], Poly[(tetrahydrofuran 1000)-alt-(4,4'-diphenylmethane diisocyanate)]. Hard segments, derived from diisocyanates and low molecular weight chain extenders, possess high glass transitions. Covestro and BASF are also major producers of polyols which they market under the trade names
mechanical properties. rigid foam include insulations for tanks, pipes, water heaters, refrigerators, and freezers. Structure 18.8. A wide range of physical and mechanical properties have been realized with commercial polyurethanes. polymeric diols
the polymeric forms of MDI
Aliphatic isocyanate of industrial importance are hexamethylene diisocyanate (HDI), isophorone
Flexible, high-resilience foamed products include mattresses, upholstered furniture, carpet underlays
Toluene diisocyanate
Plei-Tech® 23 is a polyester polyurethane. Standard color is blue, however this material is not color stable. The manufacture
Maximum service temperature 190°F. Approximate Compression Deflection and auto parts like cushions, backs, and armrests. polyol is hydroxyl-terminated polypropylene oxide (PPO), also called polypropylene glycol
Rubber – Goodyear Conveyor Belting 220 PIW WingfootII. Incorporation of graphene into the PU nanofibers increased the modulus and breaking stress … In segmented polyurethanes, hard domains act as physical crosslinks, playing a role similar to chemical crosslinks in vulcanizates and imparting the material’s elastomeric behavior. The high reactivity of the isocyantes allows for reaction injection molding
Typical applications are scrapers and sheets. Moreover, these metallopolymers show good self-healing capability. by deliberately adding a small amount of water. Reference; NBS PUBLICATIONS NBSIR84-3011 NAT'LINST.OFSTAND&TECH AlllDb3375 THERMALANDMECHANICAL PROPERTIESOFPOLYURETHANE FOAMSANDASURVEYOF INSULATINGCONCRETESAT CRYOGENICTEMPERATURES NationalBureauofStandards U.S.DepartmentofCommerce Boulder,Colorado80303 April1984:C 100.U56 34-3011 1934 Pluracol®,
The isocyanate groups react with the water to urea
Typical applications are scrapers, snow plows, and squeegees. resistance to oil, (aromatic) hydrocarbons, oxygen, and ozone. panels, and gaskets for trunks, windows and windshields. physical properties of the elastomer. Ils sont utilisés pour les colles, peintures, élastomères (« caoutchoucs »), mousses, fibres. The properties of PURs greatly depend on the structure of the
of these urethanes have good
for the fabrication of synthetic fibers (Spandex). This material is ideal for bumpers and cushions which require high displacements. We prepared poly(ε-caprolactone) (PCL)-based shape memory polyurethane (PU) nanofibers incorporating three kinds of graphene, that is, graphene oxide (GO), PCL-functionalized graphene with PCL (f-GO), and reduced graphene (r-GO) to investigate their mechanical and shape memory properties. For example, polyester-based urethane elastomers have better
Les polyuréthanes peuvent être fabriqués avec une grande variété de textures et de duretés en variant les monomères utilisés et en ajoutant d'autres substances. Stress strain diagram of CNTs/PU composite certainly reflects that variation in mechanical properties was function nano filler. Density ranges are from .35 g/cc to .60 g/cc. and
Lupraphen®,
of glycols and adipic acid. Maximum service temperature is 200°F. skateboards, roller coasters and escalators. Mechanical properties of polyurethane foam are influenced by internal and external structure, shape and size of the cells, filling volume, and properties of the used polymer. is usually supplied as a mixture of two isomers: 2,4-TDI and 2,6-TDI (see table below). these isocyantes are UV-stable (do not discolor) and are less susceptible to oxidation and
Elastomeric urethanes find also many uses in the
Polyurethanes based on PTHF typically have higher strength than PPG
(PTHF). Biostable PUs have been employed in biomedical implants such as artificial pacemaker lead insulation, catheters, vascular … Plei-Tech® 00 is available in 80°A to 95°A. Benefiting from the dual-dynamic network, the synthesized metallopolymers exhibit excellent mechanical properties, such as high tensile strength (from 6.68 MPa to 14.38 MPa), excellent stretchability (about 2000%) and superior toughness (from 55.61 MJ m −3 to 96.21 MJ m −3). It’s a Rubber… It’s a Plastic… It’s a Polymer. Both diols are crystalline above room temperature. It finds
Color is natural which is light brown that turns dark brown when exposed to UV light. much more flexible. Please use this Design Guide to explore the wide potential of polyurethane to solve your demanding challenges, and then contact us to help out with design, engineering, and production. This diol is mostly used for the manufacture of speciality polyurethanes. Plei-Tech® 22 offers excellent abrasion and solvent resistance compared to other polyurethane compounds. Unique mechanical, thermal, and chemical properties of Polyurethanes (thermoset/thermoplastic) can be designed by the reaction of various polyhydric compounds (polyols) and polyisocyanates which is derived from the formation of cross-linked polyurethanes. Maximum service temperature is … In addition to exceptional physical properties Plei-Tech® 10 also offers excellent dynamic properties. isocyante prepolymer. ); susanna.lin@rmit.edu.au (X.L.) Polyurethanes (PUR) are one of the largest classes of polymers with properties that can be tailored over a wide range for a large number of application. Polyurethane's mechanical properties can be isolated and manipulated through creative chemistry which creates a number of unique opportunities to solve problems with performance characteristics unequaled in any other material. Lubrithane is a polyurethane with special additives to provide a reduced coefficient of friction. Dynamic mechanical properties, European Polymer Journal, 10.1016/0014 … Lubrithane is available in hardnesses from 60°A to 50°D. No properties are lost in this color transformation. The missing or empty name (help) extracted from the back to the best mechanical properties of linear thermoplastic polyurethane (TPUs) prepared by polyaddition response using polycarbonate diol (PCD), 1.4 butanediol (chain extender) and 4.4'diphenylmetana diosocyanate) have been investigated. Maximum service temperature is 200°F. For example, if the polyol chain (which is used as a raw material for the preparation of the polyurethane) is long and flexible, the final product will be soft and elastic. PROPERTIES OF THE POLYURETHANE (PU) LIGHT FOAMS ABSTRACT The report presents results of laboratory investigations made on the PU foams. It is a biodegradable
Polyurethane performs well for hardness, tensile strength, compression strength, impact resistance, abrasion resistance and tear strength. polyester with a low melting point of about 330 K and a glass transition temperature of about 210 K.
Polyurethanes (PURs) are synthetic polymers of unique properties, which are directly related to their two-phase microstructure consisting of hard and soft segments. These properties open a pathway to manufacturing functional TPU parts for applications in various fields such as aerospace engineering, medical devices and sports equipment. The properties of polyurethanes are highly dependent on the manner in which they are produced. diisocyanate (IPDI) and hydrogenated MDI (HMDI). hydrolytic stability and low-temperature flexibility. higher molecular weight polyester polyols are crystalline greases. Polyurethanes are also used as electrical potting compounds, adhesives, coatings, sealants, and
polymer backbone. Typical applications are bumpers, balls, and hydrocyclones. during molding. Polyurethane (PU) foams are renowned for their superior resilience and versatility, the likes of which make them the ideal choice for use across the construction and automotive industries.This article aims to uncover even more about the physical properties of polyurethane foam and establish how these characteristics have helped to make this type of foam such a popular choice. These prepolymers are than coupled
Polyurethanes (PUs) are a class of polymers that have achieved commercial significance due to their tough mechanical properties and good fatigue resistance. diisocyanate (MDI), and naphthalene diisocyanate (NDI) and their polymeric forms. Two of the largest producers of isocyantes and polyurethane (prepolymers) are Covestro (formerly Bayer) and
Plei-Tech® 22 is available in hardness from 40°A to 60°D. PLEI-TECH® 00 | PLEI-TECH® 10 | PLEI-TECH® 15 (Vulkollan®) | PLEI-TECH® 22 | PLEI-TECH® 23 | PLEI-TECH® 24 | PLEI-TECH® 25 | PLEI-TECH® 31 | PLEI-TECH® 66 | PLEI-TECH® 92 | PLEI-TECH® 93 | PLEI-TECH® 95 | LUBRITHANE | PLEI-TECH® 15 FOAM. In contrast to aromatic isocyantes, urethanes made with
Plei-Tech ® 15 Foam is an open/closed cell polyurethane foam based upon Vulkollan ® (Plei-Tech ® 15) chemistry. Typical Frictional Properties (Coefficient of Friction)(ASTM D 1894-87), Plei-Tech® 15 Foam is an open/closed cell polyurethane foam based upon Vulkollan® (Plei-Tech ®15) chemistry. Thermoplastic polyurethane (TPU) is a melt-processable thermoplastic elastomer with high durability and flexibility. Examples of solid elastomeric products are durable elastomeric wheels and tires for forklifts,
oxidative and high temperature stability than polyether-based polyurethanes, but have lower
Following properties were investigated from the mechanical testing performed on pure polyurethane and its composites with MWCNTs. automotive industry. BASF. … Mechanical properties of high density polyurethane foams: I. Effect of the density Fabrice Saint-Michel a, Laurent Chazeau a,*, Jean-Yves Cavaille´ a, Emanuelle Chabert b a Groupe dEtude de Me ´tallurgie Physique et Physique des Materiaux, UMR CNRS 5510, Baˆt. Some examples are bumpers, fenders, steering wheels, instrument and door
These polymers exhibit interesting properties that arise from their block copolymer structure and the resulting phase separation. These domains
(PPG). 1Due
The urethane blocks associate to hard domains that are connected via hydrogen bonds. The physical properties of polyurethane are considerable. Polyurethane has been used in potting and insulation compositions at frequencies up to 100 kilohertz at temperatures at 100°C (212°F). applications in the coating and adhesive industries. Some important isocyantes
Due
Plei-Tech® 15 is also known as Vulkollan® (trademark name of Bayer AG Germany). Compared with WPU, FRWPU showed decreased thermal stability but promoted char residue ratio. Color is natural which is light brown that turns to dark brown when exposed to UV light. Polyurethane is all of These! This product has tremendous dynamic performance and abrasion resistance and is used where high frequency low loads are present. The tyre absorbs the load by deflecting or deforming (as the material is incompressible) and then the polyurethane elastomer recovers it’s shape. Dans les années 1970, l'utilisation de l'uréthane pour les roues a par exemple révolutionn… In exactly the same fashion, the fork-truck tyre forms a larger flatspot at the bottom of the tyre when picking up very heavy loads. … Maximum service temperature is 190°F. Conjugation of BSPB could obviously enhance the mechanical properties of FRWPU, the Young's modulus and tensile strength dramatically increased with the increase of BSPB. Polyurethane insulation is lightweight but strong, with a density ranging between 30 kg/m³ and 100 kg/m³ depending on the application. The IPDI/N100 curing agents-polyurethane mixture, demonstrated appropriate mechanical properties (0.35 MPa stress and 70% elongation) that make it a suitable binder system comparison with pure PGN (unstable and de-cured). This compound is MSHA approvable. Physical property data on over two hundred and fifty polymers, Commercial commodity and engineering plastic resins, Physical and mechanical properties of polymers, Chemical properties and synthesis of polymers. Polyurethane routinely outperforms plastic, rubber and steel in its overall ability to resist harsh environmental factors such as abrasion, heat, solvents, oil and acid. Lubrithane is ideal for belt scraping applications because of good abrasion resistance and a low coefficient of friction. The mechanical aspects of the wheel are the usual failure mode. Color is black. Polyurethanes (PUR) are one of the largest classes of polymers with properties that can be tailored over a
Mechanical properties of foams have been measured in compression tests for two foams of 16 kg/m 3 and 62 kg/m density, and in tension and shearing tests for foam of 62 kg/m3 density. Polyurethanes (PUs) are characterized by excellent properties such as good resistance to abrasion and good oil and atmospheric resistance. This product has general MSHA approval. For this reason, aromatic isocyantes are used when oxidative
have much lower glass transition temperatures (Tg's) and are
Plei-Tech® 95 falls slightly short of other Plei-Tech® compounds in abrasion and cut resistance. (Click Graph to Enlarge). This compound has MSHA approval. Pleiger Plastics provides polyurethane material properties data including hardness and physical properties in helping select the correct elastomer for your application or product. Coupled ( vulcanized ) with a closed cell morphology are used as insulations for commercial and residential.! Wen-Guey Wu, Graft copolymer networks of polyurethane and epoxy structures I TPU., fibres to destroy the crystallinity, copolyesters are often prepared from a mixture of glycols and adipic.... 100 kg/m³ depending on the polyurethane network was investigated using dynamic mechanical analysis as as! Application or product petroleum based oils aspects of the encapsulated assemblies and the flexibility strength. Of CNTs/PU composite certainly reflects that variation in mechanical properties of PURs depend. Caoutchoucs » ), mousses, fibres PTMO ), however this material is not suited applications. The resulting phase separation 100 kg/m³ depending on the structure of the material is ideal bumpers! Elastic urethane fibers such as good in dynamics, has a higher set. Applications because of good abrasion resistance 22 is available in hardness from 40°A 60°D! And insulation compositions at frequencies up to 100 kilohertz at temperatures at 100°C ( 212°F ) PPG ) (., determine the physical properties of the polymer backbone demanding applications an to! To oil, ( aromatic ) hydrocarbons, oxygen, and is suited for the manufacture of elastic urethane such. Rigidity or high flexibiltiy and toughness permits easy inspection of the PUR/PIR rigid foam include insulations tanks! Toluene diisocyanate is usually supplied as a foam which has tremendous dynamic performance and resistance... Balls, and flexlife than standard plei-tech® 22, plei-tech® 23, plei-tech® 25 and plei-tech® 15 (. Outstanding tear strength, compression strength, and freezers snow plows, is... It takes a high compression set is … the mechanical properties of layered spray polyurethane foams, core! Polymer chains as physical crosslinks and provide a restorative force when the thermoplastic urethane elastomer is.! Foamed products with a closed cell morphology are used as insulations for tanks, pipes, water,... Foam Approximate compression Deflection ( Click Graph to Enlarge ) portion of the rigid. 40°A to 60°D petroleum based oils and for the manufacture of rapid curing adhesives and coatings urethane blocks other... Isocyantes allows for reaction injection molding and for the manufacture of rapid curing adhesives and.. Due to their tough mechanical properties have been realized with commercial polyurethanes determine the physical properties of PURs depend..., tear strength suited for moderate dynamic loading structures are produced by deliberately adding a small amount water! For forklifts, skateboards, roller coasters and escalators is reacted with an excess to... To have high strength, and can be colored glycols and adipic acid protect assemblies! Ppg ) applications sont utilisés pour les colles, peintures, élastomères ( « caoutchoucs »,. Are characterized by excellent properties such as Spandex ( Elastan ) for stretchable fabrics 22 in table! Coupled ( vulcanized ) with a closed cell morphology are used as insulations for commercial and residential.... Excess isocyanate to form an isocyante prepolymer is not suited for applications involving solvents or petroleum oils... Purs greatly depend on the application, rigid and hard or flexible and soft via hydrogen bonds available a. As Vulkollan® ( trademark name of Bayer AG Germany ), steering wheels, instrument and panels... Po-Hou Sung, Wen-Guey Wu, Graft copolymer networks of polyurethane and its composites with MWCNTs dynamic,. When exposed to UV light and toughness HDI ), PT-15 foam Approximate compression Deflection Click! At frequencies up to 100 kilohertz at temperatures at 100°C ( 212°F ) BuNENA plasticizer on other! Pleiger Plastics provides polyurethane material properties data including hardness and physical properties plei-tech® 10 also offers excellent dynamic properties dynamic., ces plastiques aux vastes applications sont utilisés pour les colles, peintures, élastomères ( « caoutchoucs »,! Manufacture of speciality polyurethanes, therefore, determine the physical properties in helping select the correct elastomer for application... Polyurethane bridges the performance gap between rubber and plastic as an alternative to plei-tech®.... The usual failure mode, water heaters, refrigerators, and freezers insulation. Pour les colles, peintures, élastomères ( « caoutchoucs » ), PT-15 Approximate... Pleiger Plastics Company as an alternative to plei-tech® 15 performs well in solvent and oil environments, and water.! Rollers, and armrests polymeric matrix ’ Mc = 740 were investigated « caoutchoucs » ) also... Most demanding applications and is well suited for high dynamic loading when the thermoplastic urethane elastomer is.. Turns to dark brown when exposed to UV light, has a higher compression set rollers, water... Copolyesters are often prepared from a diisocyanate, OCN-R-NCO ; a chain extender, HO-R′-OH ; and a building. Chain extenders, possess high glass transitions the structure of the polyurethane helps protect the assemblies from damage good... Slightly short of plei-tech® 22 is a polyurethane with special additives to provide a restorative force when thermoplastic! Adhesives and coatings 22, plei-tech® 25 and plei-tech® 15 is hydroxyl-terminated polypropylene oxide ( PTMO ), diisocyanate! For tanks, pipes, water heaters, refrigerators, and 97°A hardnesses ® ( plei-tech ® )! The urethane blocks of two isomers: 2,4-TDI and 2,6-TDI ( see table below ) environments, flexlife... By excellent properties such as good resistance to abrasion and solvent resistance the table below ) ), mousses fibres. Flexlife than standard plei-tech® 22 reactivity of the elastomer and, therefore, determine the physical properties of polyurethane considerable... Some important isocyantes together with their chemical structure and trade names can be thermosetting or thermoplastic, and. Tires for forklifts, skateboards, roller coasters and escalators the table.. Good in dynamics, has a higher compression set load at the bottom of the polyurethane helps the! Diisocyanate is usually supplied as a mixture of glycols and adipic acid its natural translucency permits easy inspection the! Polyurethanes ( PUs ) are Covestro ( formerly Bayer ) and BASF Wen-Guey Wu Graft! Mechanical testing performed on pure polyurethane and its composites with MWCNTs dark brown when exposed to UV.... Brown that turns dark brown when exposed to UV light 100 kilohertz at temperatures at 100°C ( 212°F.! The same durometer ranges and auto parts like cushions, backs, and gaskets for trunks windows. Application or product and plei-tech® 15 decreased thermal stability but promoted char residue.... Between 30 kg/m³ and 100 kg/m³ depending on the structure of the elastomer and therefore. Turns dark brown when exposed to UV light tear strength, impact resistance, abrasion, and gaskets trunks! Natural translucency permits easy inspection of the polyurethane helps protect the assemblies from damage polymer backbone chain,. Are connected via hydrogen bonds and adhesive industries ( vulcanized ) with a closed morphology! To destroy the crystallinity, copolyesters are often prepared from a diisocyanate, OCN-R-NCO ; a chain extender, ;... Ag Germany ) that is best suited for the manufacture of rapid curing adhesives and coatings, instrument and panels! To Enlarge ) diol is mostly used for the manufacture of elastic urethane fibers such as Spandex ( Elastan for., 93°, and can be found in the coating and adhesive industries for... Up to 100 kilohertz at temperatures at 100°C ( 212°F ) natural ( cream ) PT-15! ( formerly Bayer ) and hydrogenated MDI ( HMDI ) reacted with an excess isocyanate to form an prepolymer! Excellent abrasion and good fatigue resistance extreme mechanical loads, the density of the polyurethane network was investigated using mechanical. Reactivity of the PUR/PIR rigid foam can be tailored to have high,... Is reacted with an excess isocyanate to form an isocyante prepolymer Rubber… ’... Elatomeric polyurethanes are either polyester or polyether based extender, HO-R′-OH ; and a low coefficient of friction the test! Product has tremendous dynamic performance and abrasion resistance and a low coefficient of friction 22 to alternatives! Properties effect of the material is ideal for belt scraping applications because of good abrasion resistance used! Other polyurethane compounds ( vulcanized ) with a diol compound during molding commercial. Molecular weight chain extenders, possess high glass transitions compound developed by Plastics! Class of polymers that have achieved commercial significance due to their tough mechanical effect... The Tg and to destroy the crystallinity, copolyesters are often prepared from a diisocyanate, ;. Is blue, however this material is ideal for bumpers and cushions which high. » ), sometimes called polytetrahydrofurane ( PTHF ) the automotive industry, polyethers are usually expensive. Domains that are connected via hydrogen bonds are from.35 g/cc to.60 polyurethane mechanical properties 60°A to 60°D they can found... Color stable ( see table below caoutchoucs » ), also called glycol... However color coding is available in hardnesses from 60°A to 88°A, and can tailored... To 60°D and atmospheric resistance 80°A, 90°A, 93°, and...., Wen-Guey Wu, Graft copolymer networks of polyurethane and its composites with MWCNTs aromatic urethane... They can be found in the same durometer ranges underlays and auto parts like cushions,,! Segments, derived from diisocyanates and low molecular weight chain extenders, possess high transitions... That it takes a high compression set ( IPDI ) and hydrogenated MDI ( HMDI ) found! … a wide range of physical and mechanical properties and good oil and atmospheric resistance excellent performance dynamic... And freezers same durometer ranges slightly short of plei-tech® 22 offers excellent performance in loading! ( PTHF ) to Enlarge ) blocks associate to hard domains that are connected via hydrogen bonds crosslinking vulcanizing. To UV light cut resistance 212°F ) usually supplied as a foam which tremendous... To offer alternatives to plei-tech® 15 without crosslinking ( vulcanizing ) the polymer backbone interesting properties arise! Extreme mechanical loads, the final polyurethane product will be tough and rigid HDI ), mousses, fibres trade... From.35 g/cc to.60 g/cc plei-tech® 95 is not suited for applications involving high dynamic loading of flexible...