±EVA EV-400﹄Long term supply the name TPV thermoplastic vulcanizates if say some detail, it should be thermoplastic vulcanizate (English Thermoplastic DynamicVulcanizate), and the "dynamic" 2 words is more detailed description of the process of the production of thermoplastic vulcanized rubber dynamic vulcanization, this process in rubber and thermoplastic melt blending process of vulcanized rubber, vulcanized rubber in the course of the at the same time with thermoplastic mixture is therefore the vulcanized rubber is used as the dispersed phase dispersed in the continuous phase of thermoplastic plastics, in short, a lot of plastic and rubber composition can form TPV. But only the individual blends by dynamic vulcanization with practical value, commercial PP/PE/EPDM, PP/NBR, PP/ACM, PS/SEBS. In the chemical industry press "thermoplastic elastomer" in a Book of 11 kinds of rubber and 9 plastics prepared 99 Kinds of rubber / plastic blends are reviewed, the study found that in order to get better performance of the rubber / Zui thermoplastic vulcanized blends, must meet the following conditions. TPV 2054, TPV 2060, TPV 2065, TPV 2087, TPV 2160, TPV 2073, TPV 2075 Defect analysis and solution of TPE injection molding: The finished mold after Ray speed too fast, the cavity air cannot instantly reduce discharge of fire, the air cavity smoothly discharged from raw materials containing moisture drying high molding temperature, molding temperature decreased by high temperature decomposition of the threshing barrel with air into the tube after reducing the material temperature, high pressure Finished mold flashing after the pressure is too large, the parting force is greater than the clamping force, forced open mold to reduce pressure, fly a mold clamping force, increasing injection pressure and holding pressure is too large at lower pressure and pressure injection through fast, high temperature material lowers the firing rate and feeding temperature of venting plug hole cleaning die Products filling insufficient injection pressure, lack of speed is too slow or die or increase the injection pressure, increase rate of fire and cleaning die nozzle runner molding temperature is too low, too small to improve the molding temperature, modify the air cavity channel can not be completely discharged add or increase the exhaust hole injection time is too short, insufficient amount of shoot extension injection time, injection volume increased Products with line injection pressure, injection speed is too slow, the gate and the channel is too small On the other nozzle of low temperature, long processing cycle, titanium dioxide color masterbatch dispersion is not good too, is also one of the reasons to improve the injection pressure, injection speed, modify the runner molding temperature and mold temperature is too low to improve the molding temperature and mold temperature, increase the back pressure or accelerate the speed of the screw combined parts exhaust poor or no overflow pool (cold well) increase or increase the confluence part vent overflow pool used to reduce the usage of the multi release agent release agent TPU dissolved, after processing to obtain polyurethane adhesives. In the TPU adhesive use, mainly in the four main areas of Guangdong, Fujian, Zhejiang, Shanghai. 4 because the TPU has a soft hose hose, tensile strength, impact strength, good resistance to high temperature, so in the China TPU hose is widely used as aircraft, tanks, automobile, motorcycle, machine tools and other mechanical equipment such as gas, oil hose. The main TPU hose manufacturing enterprises are concentrated in Guangdong, Zhejiang, Jiangsu, Shandong, Hebei and other places. 5. wire TPU provides tear resistance, abrasion resistance and bending characteristics, high and low temperature resistance, is the key to cable performance. Therefore, in the Chinese market, advanced cables such as control cables and power cables using TPU, used to protect the design of complex cable coating materials, the use is also increasingly widespread. 6. roller polyurethane elastomer with its high mechanical strength, excellent wear resistance, excellent oil resistance, acid and alkali resistance, outstanding resistance to compression and make it in the roller has a large number of applications. Domestic roller mainly has the following: industrial roller, home roller, sports equipment wheel, medical equipment wheel, toy wheel. 7. plastic modification can be used for PA, ABS plasticization, but the cost is higher. TPU, 315F, TPU, 518/1, TPU, 530/2, TPU, 616/1, TPU, 618/1, TPU 704, TPU, 917/1, TPU 927 PC / / /ABS melting temperature: 230~300C. Mold temperature: 50~100C. Injection pressure: depending on the plastic author Xuan Yang Plastic - Qiu Feng directory? Solvent PC / / PC / / /ABS /ABS concept /ABS "PC picture material, polycarbonate and acrylonitrile butadiene styrene copolymer and the mixture is made of polycarbonate (Polycarbonate) and polyacrylonitrile (ABS) alloy made of thermoplastic plastic, combined with the excellent properties of two kinds of materials, molding and PC / / ABS material mechanical properties, impact strength and temperature resistance, anti ultraviolet (UV) and other properties, can be widely used in automobile interior parts, business machines, communication equipment, household appliances and lighting equipment. Injection molding process conditions drying treatment: drying before processing is necessary. Humidity should be less than 0.04%, it is recommended that the drying condition is 90~110C, 2~4 hours.. Injection speed: as high as possible. The chemical and physical properties characteristics of PC / / /ABS has both PC and ABS ". EMA these same materials can be extruded, glued or extruded together at regular extrusion adhesive temperatures of 600~620 degrees F. Cast film, injection molding and blow molding, the processing temperature is in the above temperature range, which shows a very multi-faceted processing performance of ethylene methyl acrylate copolymer. The film has a softness similar to that of latex rubber and is suitable for disposable gloves and certain medical supplies. 4. According to the regulations of FDA and USDA, EMAC meets the requirements of food packaging. EMAC has also been recognized as a hot sealing and food surface contact material in the use of aseptic packaging of hydrogen peroxide and sanitary washing liquid. These materials also meet the requirements of the VI standard for pharmaceutical USP.