The thermoplastic elastomer in china extruder machine is referred to as TPE or TPR for short, and many people mention that TPE refers to a specific variety of elastomers such as SBS. But in fact there is no unified name for thermoplastic elastomers at home and abroad, most of the time it is represented by the English abbreviation TPE. Thermoplastic elastomers (TPE) are available in the following varieties:
(1) TPU polyurethane thermoplastic elastomer
(2) TPS styrene thermoplastic elastomer
(3) TPO olefin thermoplastic elastomer
(4) TPV dynamic vulcanized thermoplastic elastomer
(5) TPEE polyester thermoplastic elastomer
(6) TPA polyamide thermoplastic elastomer
Jwell machinery china TPU is a thermoplastic polyurethane elastomer, which is a polymer material formed by the co-reaction and polymerization of diisocyanate molecules such as MDI or TDI, and macromolecular polyols and low molecular polyols (chain extenders). Generally, according to the soft segment structure, it can be divided into polyester type, polyether type and butadiene type, which contain ester group, ether group and butene group respectively.
1.Polyester TPU: high strength, excellent hydrolysis resistance and high resilience, low temperature performance, oil resistance, good wear resistance, compression deformation resistance. Application areas include shoe materials, clothing, conveyor belts, pipes, sealing rings, auto parts, hydraulic hoses, bellows, wires and cables, blending modification, electronic injection molding, etc.
2. Polyether TPU: Good hand feeling, excellent hydrolysis resistance, low temperature flexibility, bacteria resistance, aging resistance and weather resistance. Applications include flat hoses, fabric coatings, wire and cable jackets, films and sheets, animal ear tags, smart watch straps, clothing materials, and more.
china extruder machine TPS, also known as TPES, is a styrene thermoplastic elastomer. It is a copolymer of styrene and other substances. According to the different copolymers, it is mainly divided into SBS, SEBS, SIS, and SEPS.
SBS is a copolymer of styrene and butadiene as monomers, which is the largest variety in TPS. The properties are very similar to those of rubber, and can be allowed to contact with water, weak acid, alkali and other solvents.
Application areas: shoe soles, hose tapes, adhesives, asphalt modifiers, daily necessities, waterproofing membranes.
SEBS is hydrogenated SBS, or saturated SBS. Compared with SBS, SEBS is harder and has higher tensile strength. In addition, it has excellent light resistance, aging resistance, good low temperature performance and good electrical properties.
Application areas: daily necessities (stationery, toys, sports equipment), cable protective covers, medical equipment, adhesive sealants, engineering plastics compatibilizers or tougheners.
china extruder machine SIS is a styrene-isoprene-styrene block copolymer, a sister product of SBS, SIS has both good elasticity and bond strength, low temperature resistance, good solubility resistance, low solution viscosity, curing Fast, but poor oil resistance, solvent resistance, and heat resistance.
Application field: mainly used for hot melt pressure sensitive adhesive, which can be used for bonding medical treatment, electrical insulation, packaging, etc.
china extruder machine SEPS is a block copolymer of polystyrene-polyethylene-polypropylene-polystyrene. Better than SEBS, with excellent mechanical properties, low temperature properties, insulating shoes, heat resistance, chemical resistance, oil resistance, and good compatibility with polyolefin and styrene polymers.
Application areas: adhesives, sealants, engineering plastic modifiers and compatibilizers, cable filling paste, automotive lubricant tackifiers, cosmetic grade petrolatum tackifiers.
china extruder machine TPO is a polyolefin thermoplastic elastomer, which is a type of polyolefin material which is copolymerized with ethylene and propylene or other olefins (such as 1-butene, 1-hexene, 1-octene, etc.). POE and EVA can be considered as such elastomers.
POE is a thermoplastic elastomer that uses metallocene catalyst for in-situ polymerization of ethylene and octene. It is characterized by good toughness, processability, aging resistance, fluidity, and good compatibility with polyolefins.
Application areas: shoe materials, cable protective covers, toys, toughening agents, high-grade hot melt adhesives, flame retardant masterbatches, film additives, modifiers.
It is made of ethylene and vinyl acetate (VA). It should be noted that the VA content of 40%-70% can be called EVA elastomer. When the VA content is less than 40%, EVA resin is usually used for modified materials, films, and cable materials. EVA with a VA content greater than 70% is liquid and is mainly used for adhesives and coatings.
Application areas: shoe materials, PVC modifiers, toys, sports equipment, automotive interiors.
china extruder machine TPV is called thermoplastic dynamic vulcanizate, which is generally made by melt blending vulcanized rubber and plastic. TPVs can be formed between many plastics and rubbers, but only a few blends have practical value after dynamic vulcanization. At present, the main commercialization is PP/EPDM, which is a TPV with PP as the continuous phase and EPDM rubber as the dispersed phase. , whose production accounts for more than 90% of all TPVs. It has good elasticity, temperature resistance, electrical insulation, aging resistance, easy to color and good hand feeling.
Application areas: door seals, floor mats, automotive dust covers, cable covers, electrical seals, fitness equipment gloves, etc.
Polyester thermoplastic elastomer, commonly known as TPEE or TEEE. Linear block polymers consisting of PBT polyester hard segments, aliphatic polyester soft segments or polyether soft segments.
Features: It has good compression modulus, bending fatigue resistance, instantaneous high temperature resistance, tear resistance, wear resistance, and good adhesion with various engineering plastics, metals and paints.
Applications: shoe materials, auto parts, flexible telephone cords, memory pillows, hydraulic hoses, artificial leather, transmission belts, modifiers, etc.
china extruder machine TPA, also known as TPAE, is a polyamide thermoplastic elastomer, which is composed of crystalline hard segment polyamide and amorphous soft segment. Generally, according to the variety of polyamide, it is divided into PA6 series, PA66 series, PA12 series, etc.
Features: It has the advantages of nylon such as high strength, elasticity, toughness, wear resistance, oil resistance, heat resistance, and excellent processing performance.
Applications: Silicone rubber substitutes, advanced shoe materials, auto parts, medical catheters, sound-absorbing gears, elastic fibers, smart wear, etc.