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Engineering plastic grade PET is resistant to organic solvents and has good weatherability. Disadvantages are slow crystallization rate, difficult molding process, high molding temperature, long production cycle and poor impact performance. Generally, the processability and physical properties are improved by means of reinforcement, filling, blending, etc., and the glass fiber reinforcing effect is obvious, and the rigidity, heat resistance, chemical resistance, electrical properties and weather resistance of the resin are improved. Adding a nucleating agent and a crystallization accelerator to improve the crystallization rate is slow. Adding flame retardant and anti-flammable dripping agent can improve PET flame retardancy and self-extinguishing.
In addition, in order to improve PET performance, PET can be alloyed with PC, elastomer, PBT, PS, ABS, PA.
PET (reinforced PET) is mainly processed by injection molding. Other methods include secondary processing methods such as extrusion, blow molding, coating and welding, sealing, machining, and vacuum coating. Dry thoroughly before molding. The main applications are electronic and electrical: electrical sockets, electronic connectors, rice cooker handles, TV deflection yokes, terminal blocks, circuit breaker housings, switches, motor fan housings, instrument mechanical parts, cash registers, electric irons, induction cookers Furnace accessories; flow control valves, carburetor covers, window controllers, pedal transmissions, switchboard covers in the automotive industry; machinery industrial gears, blades, pulleys, pump parts, and wheelchair bodies and wheels, lampshades Housing, illuminator housing, drain fittings, zippers, clock parts, etc.