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Engineering plastics are characterized by large rigidity, small creep, high mechanical strength, good heat resistance and good electrical insulation, which can be used for a long time in harsh chemical and physical environment and can replace metals as engineering structural materials. With the development of technology, the application of engineering plastics continues to expand, has been extended to automobile, home appliances, aviation, medical, sports, electronics, construction and other fields. Next, xiaoba will take you to understand how the five engineering plastics of polyamide (PA), polycarbonate (PC), polyformaldehyde (POM), polyphenyl ether (PPO) and polyester (PBT/PET) play a significant role in the field of home appliances and automobiles.
PA plastics of the five engineering plastics
Polyamide is a kind of engineering plastics with excellent properties, such as excellent mechanical properties, outstanding corrosion resistance, oil resistance, heat resistance, high modulus and so on. Its heat resistance, modulus dimensional stability and flame retardancy can be significantly improved by enhancing and modifying the flame retardant, which is widely used in automobile, electronic and electrical, power tools and other industries.
Application of PA plastics in the field of home appliances: mainly used for unattended electrical components of electrical appliances.
Application of PA plastics in the automotive field: PA has a good comprehensive performance. After being reinforced by glass fiber, its strength, dimensional stability and other properties are improved, and its price is relatively cheap. Therefore, it becomes an ideal material for engine peripheral parts. Intake manifold is the most typical application of modified PA in automobile. In addition, the engine cover, engine trim cover, cylinder head cover and other parts are generally modified nylon as the preferred material. In addition to engine components, modified PA can also be used for oil filters, wipers, radiator grilles, etc.
Five major engineering plastics of PC plastics
PC series include toughening, strengthening, flame retardant, etc., through modification can significantly improve its flame retardant and strength and other properties, so that modified materials are widely used in automotive parts, OA products, electronic and electrical products.
Application of PC plastics in the field of home appliances: due to the high mechanical properties and good appearance of modified PC, it is professionally applied in the field of home appliances in the shell of home appliances. Usually PC/ABS alloy, with high toughness, stress cracking resistance, heat resistance, high weld mark strength and other advantages.
Application of PC plastics in the automotive field: due to its high mechanical properties and good appearance, modified PC is mainly used in the automotive interior and exterior decoration, the most widely used is PC/ABS alloy and PC/PBT alloy. PC/ABS alloy is also used to manufacture auto parts such as parts around the instrument panel, anti-freeze plate, door handle, baffle plate, bracket, steering column sheath, decorative plate and air conditioning system accessories. The PC/PET alloy can be used to make automobile exhaust vents and license plate covers. PC/ABS alloy can also be used to make car exterior fittings, such as car wheel housing, reflector housing, tail lamp housing, etc. PC/ABS has good formability and can process large auto parts, such as fender.
The POM plastics of the five engineering plastics
Polyformaldehyde is one of the five engineering plastics, which has the advantages of high hardness, abrasion resistance, creep resistance, chemical corrosion resistance, etc., and is widely used in the field of automobile, electronic appliances and home appliances.
Application of POM plastics in the field of home appliances: such as turbine of washing machine, power wheel, various parts and components of microwave oven, shell, sliding parts, support frame, etc.Application of POM plastics in the automotive field: the modified POM has very low abrasion resistance and strong rigidity, which is very suitable for manufacturing automobile pump, carburetor parts, oil pipeline, power valve, wan on bearing, motor gear, crank, handle, instrument panel, automobile window lift device, electric switch, safety belt buckle, etc. Manufacturing axle sleeve, gear, slider and other wear-resistant parts is the strength of modified POM, these parts of the metal wear small, reduce the amount of lubricating oil, enhance the service life of the parts, so can widely replace copper, zinc and other metals in the production of bearings, gear, pull rod. POM is widely used in automobile manufacturing because of its light weight, low noise and easy assembly.
The PBT plastics of the five engineering plastics
Polybutanediol terephthalate (PBT) is an engineering material with excellent properties, such as toughness, fatigue resistance, heat resistance, weather resistance, good electrical properties and low water absorption. Its heat resistance, modulus, dimensional stability and flame retardancy can be improved by enhancing and modifying it. It is widely used in automobile, home appliance and other industries.
Application of PBT plastics in home appliances: flame retardant PBT is mainly used in home appliances with flame retardant requirements.
Application of PBT plastics in automobile field: PBT plastics is widely used in bumper, carburetor assembly, fender, spoiler, spark plug terminal board, fuel supply system parts, instrument panel, automobile igniter, accelerator and clutch pedal and other parts. PBT alloy is also widely used in luxury cars. PBT/PC alloy good heat resistance, stress cracking resistance, excellent wear resistance, chemical corrosion resistance, low temperature impact strength, easy processing and coating, mainly used in high-grade cars bumper, car floor, panel and motorcycle protection board.