Haier refrigerator drawers are made of engineering plastics, engineering plastics can be used as engineering materials and plastic instead of metal to make machine parts and so on. Engineering plastics have excellent comprehensive performance, rigidity, creep, high mechanical strength, good heat resistance, good electrical insulation, can be used in the more demanding chemical and physical environment for a long time, can replace the metal as a structural material for engineering use, but the price is more expensive, the output is small.
Expanded Information:
Other characteristics of engineering plastics:
Engineering plastics can be divided into two categories: general engineering plastics and special engineering plastics. The former main varieties of polyamide, polycarbonate, polyformaldehyde, modified polyphenylene ether and thermoplastic polyester five general-purpose engineering plastics; the latter mainly refers to heat-resistant up to 150 ℃ above the engineering plastics, the main varieties of polyimide, polyphenylene sulfide, polysulfone, aromatic polyamides, polyarylene esters, polyphenylene esters, polyarylene ether ketone, liquid crystal polymers and fluorine resins, etc..
Engineering plastics applications:
In machinery, engineering plastics can be used in bearings, gears, screw nuts, seals and other mechanical parts and shells, covers, handwheels, handles, fasteners and pipe fittings, and other mechanical structures.
In electrical and electronic appliances, engineering plastics can be used in wire and cable coverings, printed circuit boards, insulating films and other insulating materials and electrical equipment structural components.
In household appliances, engineering plastics can be used in refrigerators, washing machines, air conditioners, television sets, fans, vacuum cleaners, irons, microwave ovens, rice cookers, radios, combined audio equipment and lighting appliances.
In the chemical industry, engineering plastics can be used in heat exchangers, chemical equipment lining and other chemical equipment and pipe and pipe fittings, valves, pumps and other chemical pipelines.
Baidu Encyclopedia - Engineering Plastics