▆??PA11 BESNP40BLKTL↘Long term supply of TPU material properties of polymer material with the use of the car parts catalogue classification TPU is composed of two diphenyl methane diisocyanate (MDI)?or?toluene diisocyanate (TDI) and other low molecular isocyanate molecules and polyols and Polyols (chain extender) polymer materials co polymerization reaction. Its molecular structure is composed of two diphenyl methane diisocyanate (MDI)?or?toluene diisocyanate (TDI) and chain extender is a rigid block and two diphenyl methane diisocyanate (MDI)?or?toluene diisocyanate (TDI), diisocyanate molecules and flexible segment polyol anti should be composed of alternating. TPU is a mature environmentally friendly material with outstanding high tensile, tensile, tough and aging properties. Thermoplastic polyurethane elastomer TPU according to the molecular structure can be divided into polyester and polyether two kinds, according to processing methods can be divided into injection molding, extrusion grade, blow molding grade. PC / / PC / / /ABS /ABS stability to hydrolysis resistance stability to hydrolysis resistance of series PC "/ABS (HAC8250R) is mainly used in automotive dashboard frame and other automotive interior products. As the supporting structure of the instrument panel, the importance of the automobile dashboard framework is self-evident, so the host factory puts forward more stringent requirements for the dashboard material. At present, the panel skeleton not only requires good mechanical performance, processing performance, but also has the you hydrolysis resistance and thermal aging properties, so as to adapt to the automobile in extreme high temperature and high humidity environment. In addition, the series of materials in order to adapt to the requirements of the instrument panel wall, reduces the material under high shear viscosity, to overcome the past one-sided increase the temperature to increase the drawbacks of thermal decomposition caused by the material flow of the. A new generation of PC and stability to hydrolysis resistance of /ABS material, because of its good hydrolysis resistance and thermal stability, and can be recycled. When the recycled material is less than 25%, the multiaxial impact properties of the material only decrease by 11%, and it is ductile fracture EVA polymerization: 1, high-pressure polymerization (plastic products), 2 (PVC solution polymerization and emulsion polymerization processing aids) 3 (vinyl adhesive products) 4, suspension polymerization (VA) was higher than 30% by emulsion polymerization; vinyl acetate (VA) with low content of high pressure polymerization. Main factors affecting the performance of EVA: 1, Melt Index melt index (referred to as MI, refers to the content of soluble) melt index 2 and VA% acetic acid (MI), vinyl acetate (VA) content is higher, its elasticity, softness, solubility, transparency is higher; when the reduction of VA the content, its performance is close to polyethylene (PE), rigid increased wear resistance, electrical insulation to improve. The content of soluble VA (MI), to increase the softening point decline, processing and surface gloss improvement, but the strength will decrease, otherwise, along with the MI of lower molecular weight increases, impact resistance and resistance to environmental stress cracking performance. ABS Korea 4 ABS main production enterprises, respectively LG, BASF, CHIEL chemical industry and Kumho chemical, about 60% of exports to the mainland and Hongkong area China. The Zui is the LG chemistry, in 2002 China Ningbo plant capacity doubled to 300 thousand tons / year, by the end of 2003 will be located in the production capacity of ABS Guoli Han Sichuan increased 100 thousand tons / year, the total production capacity reached 500 thousand tons / year of the device. Through the expansion of the ABS plant in Korea and China, LG chemical company's ABS production capacity has risen to 800 thousand tons / year, ranking the world's third largest ABS producer.