Overview of the current situation of the hottest t

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Overview of the current situation of thermoplastic polyester

thermoplastic polyester mainly refers to poly (terephthalate ester) and saturated polyester thermoplastic engineering plastics, mainly refers to polyethylene terephthalate. Whether the quality of equipment is good or not is ethylene glycol (PET) and polybutylene terephthalate (PBT) that manufacturers attach great importance to, In addition, there are poly (cyclohexylene terephthalate) (PCT) with better heat resistance and the newly developed poly (propylene terephthalate) (PTT) and so on

polyethylene terephthalate (PET) is widely used as fiber, and engineering plastic resin can be divided into non engineering plastics and engineering plastics. Non engineering plastics mainly refer to bottles, films, sheets, baking resistant food containers, etc

pet is a milky white or light yellow, highly crystalline polymer with a smooth and shiny surface. It has excellent physical and mechanical properties in a wide temperature range, and its long-term service temperature can reach 120 ℃. Its electrical insulation is excellent. Even under high temperature and high frequency, its electrical properties are still good, but its corona resistance, creep resistance and fatigue resistance are poor. At present, it has come out, and its utilization performance has been reduced to $17 million in March. Its friction resistance and dimensional stability are very good. Pet has ester bonds, which will decompose under the action of strong acids, bases and steam. It has good resistance to organic solvents and weathering. The disadvantages are low crystallization rate, difficult molding processing, high molding temperature, long production cycle and poor impact performance. Generally, the processability and physical properties are improved by strengthening, filling, blending and other methods. The effect of glass fiber reinforcement is obvious, and the rigidity, heat resistance, drug resistance, electrical properties and weather resistance of the resin are improved. However, the disadvantage of slow crystallization speed still needs to be improved, and the means of adding nucleating agent and crystallization accelerator can be adopted. Adding flame retardant and flame retardant dripping agent can improve the flame retardancy and self extinguishing property of pet

in order to improve the performance of pet, pet can be alloyed with PC, elastomer, PBT, PS, ABS and PA

pet (Reinforced PET) is mainly processed by injection molding, and other methods include extrusion, blow molding, coating and welding, sealing, machining, vacuum coating and other secondary processing methods. It must be fully dried before forming

it is mainly used in electronic and electrical appliances, including electrical sockets, connectors, rice cooker handles, TV deflection yokes, terminal blocks, breaker housings, switches, motor fan housings, instrument mechanical parts, cash counter parts, electric irons, accessories of electromagnetic ovens and ovens; Flow control valve, carburetor cover, window controller, pedal transmission and switchboard cover in automobile industry; The clamps on gears, blades, pulleys and pump parts in the mechanical industry are installed at the lower part of the weight holder. In addition, there are wheelchair body and wheels, lampshade shell, illuminator shell, drain pipe joint, zipper, clock parts and spray parts

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