Thermoplastic Vulcanized Rubber (Thermoplastic Vulcanizate), abbreviated as TPV, Thermoplastic Vulcanized Rubber is shortened to Thermoplastic Rubber (Thermoplastic Rubber) in Chinese, abbreviated as TPR, but the name is easy to be confused with other kinds of Thermoplastic Elastomer (Thermoplastic Elastomer). Thermoplastic Elastomer) is easily confused with other kinds of thermoplastic elastomers (Thermoplastic Elastomer), because usually thermoplastic elastomers are also called thermoplastic rubber, especially styrenic elastomers, at least in China at present, it seems that the "TPR" has become its proprietary name, the mention of the TPR, that is, SBS, SEBS and other styrenic elastomers as the base material of thermoplastic elastomers, and the TPR is a kind of thermoplastic elastomer. When it comes to TPR, it refers to SBS, SEBS and other styrenic elastomers as the base material of thermoplastic elastomers, which is inseparable from the large consumption of styrenic elastomers in the field of civil and end-user consumer goods.
The name of the thermoplastic vulcanized rubber, if you say a little more detailed, it should be thermoplastic dynamic vulcanized rubber (in English for Thermoplastic Dyamic Vulcanizate), added the word "dynamic" 2 words are more specific to the production of this thermoplastic vulcanized rubber process - - dynamic vulcanization, this process is more specific to the production of this thermoplastic vulcanized rubber - - dynamic vulcanization. --Dynamic vulcanization, this process refers to the rubber and thermoplastic melt **** mixing process to make the rubber vulcanized, of course, in the rubber in the vulcanization at the same time also continuously mixed with the thermoplastic, so the vulcanized rubber is as a dispersed phase distributed in the thermoplastic continuous phase. The corresponding thermoplastic static vulcanized rubber, is the rubber according to the traditional method of vulcanization, and then through the milling equipment to vulcanize the rubber into powder, and finally with the molten thermoplastic **** mixing, theoretically, this method can also be made of excellent performance of the TPV, but so far, is only in the laboratory stage.
Composition
TPV is mainly composed of two parts, one is plastic, as a continuous phase, and the other is rubber as a dispersed phase. Usually the rubber needs to be combined with a softening oil or plasticizer with it. Vulcanizing agent and some auxiliary additives are also essential. In addition, in order to reduce the cost or improve the performance of a certain aspect, some inorganic fillers will be filled.
TPV can be formed between many plastics and rubber, but only individual **** blends have practical value after dynamic vulcanization, currently commercially available PP/PE/EPDM, PP/NBR, PP/ACM, PS/SEBS. in the Chemical Press, "thermoplastic elastomers," the book on the 11 kinds of rubber and 9 kinds of plastics prepared by the 99 kinds of rubber / plastic **** Blends were reviewed in the Chemical Press book "Thermoplastic Elastomers" and it was found that the following conditions must be met in order to obtain the best performing rubber/thermoplastic dynamically vulcanized*** blends:
(1) the surface energy of the two polymers, the plastic and the rubber, are matched;
(2) the rubber entangles the molecular chain with a low length;
(3) the plastic's crystallinity is greater than 15 percent. When the polarity or surface energy difference between plastic and rubber is relatively large, add the appropriate compatibilizer, and then dynamic vulcanization, you can also get excellent performance **** mixture.
Specific properties
1, good elasticity and resistance to compression deformation, environmental and aging resistance is equivalent to EPDM, while its oil and solvent resistance is comparable to general-purpose chloroprene rubber.
2, the application of a wide range of temperatures (- 60-150 ℃), soft hardness of a wide range of applications (25A-54D), easy to dye the advantages of greatly improving the freedom of product design.
3, excellent processing performance: can be injected, extrusion and other thermoplastic processing methods, high efficiency, simple and easy to implement, no need to add equipment, high mobility, shrinkage rate is small.
4, green, recyclable, and repeated use of six performance without significant decline, in line with EU environmental requirements.
5, the specific gravity is light (0.90-0.97), the appearance of the quality of uniformity, high surface grade, feel good.
Based on the above performance characteristics, TPV in a wide range of applications and traditional rubber materials, other TPE elastomer (including TPR \ SBS, SEBS, TPU, etc.) materials or PVC and other plastic materials compared to the comprehensive performance and comprehensive cost have a certain degree of substitution advantages, so as to provide products for the enterprise product innovation, enhance the added value of the product, improve competitiveness
The TPU material is a new type of plastic material that can be used in a wide range of applications.
TPV is the world's number one display manufacturer, TPV Group, which has branch factories in Beijing, Fuqing, Wuhan, Ningbo and Suzhou.
TPV is short for Thermoplastic Vulcanizate, Chinese name is Thermoplastic EPDM Dynamic Vulcanizate Elastomer or Thermoplastic EPDM Dynamic Vulcanizate Rubber, it is highly vulcanized EPDM particles dispersed in the continuous polypropylene PP phase composed of polymer elastomer materials.
TPV physical properties and functions at room temperature The physical properties and functions of TPV at room temperature are similar to those of thermoset rubber, and at high temperature it exhibits the characteristics of thermoplastic, which can be processed and molded quickly, economically and conveniently.TPV thermoplastic EPDM dynamic vulcanized elastomers/rubbers are made by dynamically vulcanizing vulcanized rubber materials so that EPDM is dispersed in the polypropylene PP plastic matrix with particles of less than 2 micrometers in size, which is an excellent combination of the characteristics of rubber and plastics, and gives the following properties The comprehensive performance of high-performance elastomer materials.
TPV thermoplastic EPDM dynamically vulcanized elastomer/rubber main properties:
1, TPV can be used in the temperature range of -60 ℃ ~ 135 ℃ temperature range, a wide range of application temperatures;
2, TPV hardness range of 25A ~ 65D, to meet the wide range of hardness requirements;
3, TPV has good weather resistance, excellent anti-aging, ozone and UV resistance;
4, TPV does not require vulcanization, can be directly through the injection, extrusion, calendering, blow molding and other ways of processing and molding, which can shorten the processing process, reduce processing costs;
5, TPV environmental performance is similar to the three EPDM, the oil and solvent resistance is similar to chlorinated rubber. Oil and solvent resistance is similar to chloroprene rubber;
6, TPV easy to weld, reusable, environmentally friendly and non-toxic.
TPV thermoplastic EPDM dynamically vulcanized elastomer/rubber main features:
1, excellent aging resistance and good weathering, heat resistance;
2, excellent resistance to permanent deformation;
3, excellent tensile strength, high toughness and high resilience;
4, excellent environmental protection and can be reused.
5, excellent electrical insulation properties;
6, a wide range of hardness;
7, a wide range of operating temperatures;
8, color diversification, translucent, semi-transparent, light-colored series, easy to color, easy to process and molding;
9, can be used in injection or extrusion with a wide range of materials ****PP, PA, PC, ABS, PS, PBT, PET and so on. A variety of materials **** injection or extrusion molding.
TPV thermoplastic EPDM dynamically vulcanized elastomer/rubber applications:
■ Automotive industry
1, automotive seals, seals series;
2, automotive dust covers, fenders, ventilation pipes, buffers, bellows, intake pipe, etc.;
3, automotive high-voltage ignition line. Can withstand 30-40KV voltage, can meet the requirements of UL94 V0 flame retardant;
■ Consumer Goods
1, hand tools, power tools, lawn mowers and other gardening equipment parts;
2, household appliances on the use of gaskets, parts;
3, scissors, toothbrushes, fishing rods, sports equipment, kitchen appliances, and other products of the handle grip;
3, scissors, toothbrushes, fishing rods, sports equipment, kitchen appliances and other products;
4, automotive dust cover, ventilator, buffer, bellows, etc.; < /p>
4, cosmetics, beverages, food, bathroom supplies, medical appliances and other products of various types of packaging;
5, a variety of wheels, buzzers, fittings, belts and other joints of the soft parts.
6, needle plugs, bottle stoppers, straws, sleeves and other soft plastic parts;
7, flashlight shells, children's toys, toy tires, golf bags, all kinds of grips and so on.
■ Electronic appliances
1, a variety of headphone cable outer skin, headphone cable connector;
2, mining cables, CNC coaxial cables, ordinary and high-grade wire and cable insulation and sheath;
3, power sockets, plugs and sheaths, etc.;
4, batteries, cordless telephones shells and electronic transformer shells sheath;
5, ships, mines, drilling platforms, nuclear power plants and other facilities of the power cable line insulation and sheath.
■ Transportation equipment
1, road, bridge expansion joints;
2, road safety facilities, buffer crash components;
3, container seals.
■ Construction Building Materials
1, power parts sealing strip
2, building expansion joints, sealing strip
3, water supply and drainage pipe seals, water irrigation system control valves, etc.
See more details below: new materials information
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