According to the structure of ester groups, they can be divided into aliphatic, aromatic, aliphatic-aromatic and other types. Among them, aliphatic and aliphatic-aromatic polycarbonates have low mechanical properties, which limits their application in engineering plastics.
Only aromatic polycarbonate has been industrialized. Due to its special structure, polycarbonate has become the fastest-growing general engineering plastic among the five engineering plastics.
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Use:
1, optical lighting
It can be used to manufacture large lampshades, protective glasses, left and right eyepiece tubes of optical instruments, etc. And can also be widely used as transparent materials on airplanes.
2. Electronic equipment
Polycarbonate is an excellent E( 120℃) insulating material, which is used to manufacture insulating connectors, coil formers, tube seats, insulating sleeves, telephone housings and parts, miner's lamp battery housings, etc.
It can also be used to manufacture parts with high dimensional accuracy, such as optical disks, telephones, electronic computers, video recorders, telephone exchanges, signal relays and other communication equipment. Polycarbonate films are also widely used as capacitors, insulated wallets, audio tapes, color video tapes and so on.
3, mechanical equipment
It is used to manufacture various gears, racks, worm wheels, worms, bearings, cams, bolts, levers, crankshafts and ratchet wheels, and can also be used as parts of housings, covers and frames of mechanical equipment.
4. Other aspects
Used as hollow rib double-layer wallboard and greenhouse glass in buildings; In the textile industry, it is used as textile bobbin and bearing bush of textile machinery. Daily use as bottles, tableware, toys, models, LED lamp cases, mobile phone cases.