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Engineering plastics have the characteristics of high rigidity, small creep, high mechanical strength, good heat resistance and good electrical insulation, which make it can be used in harsh chemical and physical environment for a long time, and can replace metal as engineering structural materials. With the development of technology, the application of engineering plastics has been extended to cars, home appliances, aviation, sports, electronics, construction and other fields.

Polyamide, one of the five engineering plastics

Polyamide (PA) is a kind of engineering plastics with excellent function. It has excellent mechanical function, such as corrosion resistance, oil resistance, heat resistance, high modulus and so on. Its heat resistance, modulus standard stability and flame retardancy can be significantly improved by strengthening and flame retardant modification. It is widely used in cars, electronic and electrical, electric tools and other occupations.

The application of PA plastic in the field of home appliances: it is mainly used for the electrical parts of unattended electrical appliances.

Application of PA plastics in the field of cars: PA has good functions. After being reinforced by glass fiber, its strength, standard stability and other functions are improved, and its price is relatively cheap. Therefore, it has become an aspiring material for engine peripheral parts. Intake manifold is a typical application of modified PA in cars. In addition, the engine cover, engine decoration cover, cylinder head cover and other parts are generally modified nylon as a material. In addition to engine components, oil filter, wiper, radiator grille, etc. can also use modified PA.

Polycarbonate, one of the top five engineering plastics

Polycarbonate (PC) series includes toughening, reinforcing and flame retardant. The flame retardancy and strength of PC can be significantly improved by modification, which makes the modified materials widely used in car parts, OA products, electronic and electrical products, etc.

Application of PC plastics in the field of home appliances: modified PC has high mechanical function and appearance, so it is used in the home appliance field. Usually PC / ABS alloy, with high resistance, stress cracking resistance, heat resistance, high weld line strength and other benefits.

The application of PC plastics in the field of cars: because of its high mechanical function and appearance, modified PC is mainly used in car interior and exterior decoration, and widely used in PC / ABS alloy and PC / PBT Alloy. PC / ABS alloy is also used to make car parts such as the parts around the dashboard, anti freezing plate, door handle, cathode plate, bracket, steering column sheath, decoration panel, air conditioning system accessories, etc. PC / Pet alloy can be used to make car exhaust port and license plate cover. PC / ABS alloy can also be used to manufacture car exterior parts, such as car wheelhouse, reflector shell, taillight cover, etc. PC / ABS has formability and can be used to process large parts of car, such as fender.

Polyoxymethylene, one of the top five engineering plastics

Polyoxymethylene (POM) is one of the five major engineering plastics, which has the advantages of high hardness, wear resistance, creep resistance and chemical corrosion resistance, and is widely used in the fields of cars, electronic appliances and home appliances.

The application of POM plastics in the field of household appliances: such as the turbine and power wheel of washing machine, various parts and components of microwave oven, shell, sliding parts, support frame, etc.

Application of POM plastics in car field: the wear resistance coefficient of modified POM is very low and its rigidity is very strong. It is very suitable for manufacturing car pump, carburetor parts, oil pipeline, power valve, wanshangjie bearing, motor gear, crank, handle, instrument panel, car window elevator equipment, electric switch, safety belt buckle, etc. The strength of modified POM is to manufacture wear-resistant parts such as shaft sleeve, gear and slide block. These parts wear less metal, reduce the amount of lubricating oil and enhance the service life of components. Therefore, they can widely replace copper, zinc and other metals to produce bearings, gears, pull rods, etc. The car parts produced by POM are light in weight, low in noise and simple in forming device, so they are more and more widely used in car manufacturing industry.

4. Polybutylene terephthalate, one of the five engineering plastics

Polybutylene terephthalate (PBT) is a kind of engineering material with excellent function. It has excellent resistance to heat, weather, electricity and water absorption. Its heat resistance, modulus, standard stability and flame retardancy can be significantly improved by strengthening and flame retardant modification. It is widely used in cars, household appliances and other occupations.

Application of PBT plastics in household appliances: flame retardant PBT is mainly used in household appliances with flame retardant requirements.

Application of PBT plastic in car field: PBT plastic is widely used in bumper, carburetor assembly, fender, spoiler, spark plug terminal board, fuel supply system parts, instrument panel, car igniter, accelerator and clutch pedal. PBT Alloy is also widely used in cars. PBT / PC alloy has good heat resistance, stress cracking resistance, excellent wear resistance, chemical corrosion resistance, high impact strength at low temperature, easy processing and good finishing. It is mainly used in car bumper, car bottom plate, panel and motorcycle guard board.

5. Polyphenylene oxide, one of the five engineering plastics

Polyphenylene oxide (PPO) has excellent physical and mechanical functions, heat resistance and electrical insulation, low moisture absorption, high strength and good standard stability. It is widely used in water related fields such as kettle cover, valve core, water pump and impeller.

The application of PPO plastic in the field of home appliances: heat resistance, stress cracking resistance, mainly used in the kettle cover of electric kettle.

Application of PPO plastics in car field: modified PPO is mainly used in car parts with high requirements of heat resistance, flame retardancy, electrical function, impact function, standard stability and mechanical strength. For example, PPO / PS alloy is suitable for wet, loaded, high requirements for electrical insulation and good standard stability. It is suitable for manufacturing car wheel cover, headlamp glass groove, tail lamp housing and other parts, and also suitable for manufacturing car electrical components such as connection box, fuse box, circuit breaker shell, etc. Because of its excellent mechanical function, standard stability, oil resistance, electrical insulation and impact resistance, PPO / PA alloy can be used to manufacture car exterior parts, such as large baffle, cushion, rear baffle, etc.

Source: Jiangmen engineering plastics http://www.qdsmt.com/