What is engineering plastic?
Engineering plastics can be used as engineering materials and plastics that replace metal manufacturing machine parts. Engineering plastics have excellent comprehensive properties, high rigidity, low creep, high mechanical strength, good heat resistance, and good electrical insulation. They can be used for a long time in harsh chemical and physical environments and can replace metals as engineering structural materials. , But the price is more expensive and the output is small.
The development history of engineering plastics
Engineering plastics only developed rapidly in the 1950s. Although nylon 66 resin was successfully developed and put into production as early as 1939, it was mainly used to make synthetic fibers at that time. It was not until the 1950s that it broke through the traditional use of pure fibers and was processed to produce plastics. The rapid development of engineering plastics is after the successful development of polyoxymethylene and polycarbonate in the late 1950s. Their emergence is of great significance. Due to the high crystallinity of polyoxymethylene, it gives it excellent mechanical properties, which makes plastic as a material that can replace metal for the first time among the ranks of structural materials. Later, with the successful development of copolyformaldehyde and the popularization of screw injection molding machines, the important position of engineering plastics in the field of materials has been further established. Polycarbonate is a transparent engineering plastic with excellent comprehensive properties. It is widely used and is one of the fastest-growing engineering plastics. In the field of engineering plastics, its output and consumption are second only to polyamide.
Performance characteristics of engineering plastics
(1) Compared with general-purpose plastics, it has excellent heat and cold resistance, excellent mechanical properties in a wide temperature range, suitable for use as structural materials and good processing performance of plastic parts;
(2) Good corrosion resistance, less environmental impact, and good durability;
(3) Compared with metal materials, it is easy to process, has high production efficiency, and can simplify procedures and save costs;
(4) Good dimensional stability and electrical insulation;
(5) Light weight, high specific strength, and outstanding anti-friction and wear resistance.
Application of engineering plastics
Engineering plastics can meet higher requirements in terms of mechanical properties, durability, corrosion resistance, heat resistance, etc., and are more convenient to process and can replace metal materials. Engineering plastics are widely used in electrical and electronic, automotive, construction, office equipment, machinery, aerospace and other industries. Substituting plastic for steel and plastic for wood has become an international trend. Engineering plastics has become the fastest growing field in the world's plastics industry. Its development not only supports the country's pillar industries and modern high-tech industries, but also promotes the transformation of traditional industries and the adjustment of product structure.
1. The application of engineering plastics in automobiles is increasing. They are mainly used as bumpers, fuel tanks, instrument panels, body panels, doors, lamp covers, fuel pipes, radiators, and engine-related parts.
2. In machinery, engineering plastics can be used for mechanical parts such as bearings, gears, screw nuts, seals and mechanical structural parts such as housings, covers, hand wheels, handles, fasteners and pipe joints.
3. In electronic appliances, engineering plastics can be used for insulation materials such as wire and cable coating, printed circuit boards, insulating films, and structural parts of electrical equipment.
3. In household appliances, engineering plastics can be used in refrigerators, washing machines, air conditioners, televisions, electric fans, vacuum cleaners, electric irons, microwave ovens, rice cookers, radios, sound systems and lighting appliances.
4. In the chemical industry, engineering plastics can be used in chemical equipment such as heat exchangers, chemical equipment linings, and pipes and pipe fittings, valves, pumps and other chemical pipelines.
5. For the household appliance industry, the annual demand for engineering plastics for refrigerators, freezers, washing machines, air conditioners and various small household appliances will reach about 600,000 tons. The amount of engineering plastics used in the construction of communication infrastructure and railways and highways is even more alarming.
Guangzhou Aote Engineering Plastics Co., Ltd., our company specializes in high-performance plastics and engineering plastics injection molding, PEEK injection molding, PEEK plastic parts, PFA injection molding, PPS injection molding, PVDF injection molding, PSU injection molding and plastic parts processing.
