Polyterephthalate plastics mainly include polyethylene […]
Polyterephthalate plastics mainly include polyethylene terephthalate (PET) and polybutylene terephthalate (PBT).
PET has a highly symmetrical molecular structure and a certain crystal orientation ability, so it has high film-forming properties and properties. PET has good optical properties and weather resistance, and amorphous PET has good optical transparency. In addition, PET has excellent wear resistance, friction, dimensional stability and electrical insulation. Bottles made of PET have high strength, good transparency, non-toxic, anti-permeation, light weight, high production efficiency, etc., so they are widely used. The molecular chain structure of PBT and PET is similar, and most of the properties are the same, except that the main molecular chain has changed from two methylene groups to four, so the molecules are more flexible and processing performance is better.
The main uses of polyterephthalic acid plastics are:
Film and sheet materials: all kinds of food, medicine, non-toxic and sterile packaging materials; high-end packaging materials for textiles, precision instruments, electrical components; audio tapes, video tapes, movie films, computer floppy disks, metal coatings and photosensitive films, etc. Substrate; electrical insulation materials, capacitor films, flexible printed circuit boards and membrane switches and other electronic and mechanical fields.
Packaging bottle application: its application has been developed from the initial carbonated beverage to beer bottles, edible oil bottles, condiment bottles, medicine bottles, cosmetic bottles, etc.
Electronic appliances: manufacturing connectors, coil bobbins, integrated circuit shells, capacitor shells, transformer shells, TV accessories, tuners, switches, timer shells, automatic fuses, motor brackets and relays.
Auto parts: such as switchboard covers, ignition coils, various valves, exhaust parts, distributor covers, measuring instrument covers, small motor covers, etc., and PET's excellent paintability, surface gloss and rigidity can also be used to manufacture automobiles Exterior parts.
Mechanical equipment: manufacturing gears, cams, pump housings, pulleys, motor frames and watch parts, and can also be used as microwave oven bakeware, various ceilings, outdoor billboards and models, etc. ·