1. Polyoxymethylene
The automotive industry is a potential market for POM. POM is light weight, easy to process and form, lower in production cost, and similar material performance to metals. Modified POM has low wear resistance and strong rigidity; it is very suitable for manufacturing automotive pumps, carburetor components, oil pipelines, power valves, bearings, motor gears, cranks, handles, instrument panels, and automotive window lifts, electric switch, seat belt buckle, etc. The manufacture of wear parts such as bushings, gears and sliders is the strength of the modified POM. These parts have low metal wear, reduce the amount of lubricating oil and enhance the service life of the parts. Therefore, it can widely replace copper, zinc and other metal production bearings, gears, levers, etc. POM’s automotive parts are lighter weight, lower noise, and easy to assemble, these make POM more and more widely used in the automotive industry.

2. Polycarbonate
Due to its high mechanical properties and good appearance, the modified PC is mainly used for exterior parts and interior parts in automobiles, and is widely used for PC/ABS alloy and PC/PBT alloy.

1) Automotive interior parts
PC/ABS alloy is a material suitable for automotive interior parts. This is because the PC/ABS alloy has excellent heat resistance, impact resistance and rigidity, and good processing fluidity. It is also an ideal material for the manufacture of automotive dashboards. The heat distortion temperature of PC/ABS alloy is 110 °C ~ 135 °C, which can fully meet the heating requirements of cars parked outdoors in the hot summer of tropical countries. PC/ABS alloy has good coating properties and adhesion to the cover film. Therefore, the instrument panel made of PC/ABS alloy can be directly sprayed with a soft top coat or a PVC film without surface pretreatment. PC/ABS alloys are also used to manufacture automotive parts such as automotive dashboard components, antifreeze panels, door handles, sloping panels, brackets, steering column jackets, trim panels, and air conditioning system accessories.

2) Automotive exterior parts
PC/PBT alloy and PC/PET alloy not only have high heat resistance and high impact of PC, but also have chemical resistance, wear resistance and molding processability of PBT and PET, so it is an ideal material for manufacturing automotive exterior parts.

PC / PBT car bumpers can withstand low temperature impacts below -30 ° C. When the bumper breaks, it is ductile fracture without debris. Elastomer toughened PC / PBT alloy and PC / PET alloy are more suitable for the production of automotive body panels, automotive side panels, fenders, car door frames and so on. High-heat-resistant PC / PBT alloy and PC / PET alloy injection molded exterior parts do not need any paint on the surface. PC / PET alloy can be used to make automotive exhaust opening and license plate sets. PC / ABS alloy can also be used to make automotive exterior decorative parts, such as cars Wheel covers, mirror housings, taillight covers, etc. PC / ABS has good formability and can process large parts of automobiles, such as car fenders.

3. Polyphenylene ether
Modified PPO is mainly used in manufacturing automobiles parts which requir high heat resistance, flame retardancy, electrical properties, impact properties, dimensional stability, and high mechanical strength. For example, PPO/PS alloy is suitable for the manufacture of automobile wheel cover, front lamp glass and taillight housings, it is also suitable for the manufacture of automotive electrical components such as junction boxes, fuse boxes, and circuit breaker housings.

Due to their excellent mechanical properties, dimensional stability, oil resistance, electrical insulation and impact resistance, PPO / PA alloys can be used to make automotive exterior parts such as large baffles, cushions, rear spoilers, etc.

PPO / PBT alloys have high heat distortion resistance and low moisture sensitivity, this makes them the ideal materials for manufacturing automotive exterior panels.

The development direction of the automotive industry is second, miniaturization, light weight and diversification, and research on plastic-based steel in automotive applications has become very positive. At present, domestic automotive plastics account for 7% of the total materials, and Germany’s proportion is 15%. We need to do more research and development, to make structure design, polymer choice simultaneous developing with the automotive industry.