Polyvinyl chloride, referred to as PVC in English, is a polymer of vinyl chloride monomer (VCM) in peroxide, azo compounds and other initiators or under the action of light and heat polymerization by free radical polymerization reaction mechanism. Vinyl chloride homopolymer and vinyl chloride copolymer are called vinyl chloride resin.
PVC is a white powder with amorphous structure, small branching degree, glass transition temperature 77~90 ° C, 170 ° C or so began to decompose, poor stability of light and heat, above 100 ° C or after a long time of sunlight exposure, it will decompose and produce hydrogen chloride, and further automatic catalytic decomposition, causing discoloration, physical and mechanical properties are also rapidly declining, In practical applications, stabilizers must be added to improve the stability of heat and light.
Caprolactam Properties
Name:Polyvinyl chloride
CAS :25702-80-1
Molecular Weight:134.56100
Density :1.39
Boiling Point :141ºC at 760 mmHg
Molecular Formula : C5H7ClO2
Application
The application of PVC is extremely wide, from building materials to automobile manufacturing, children's toys, from industrial and agricultural products to daily necessities, involving all walks of life, all aspects. For example, it can be used for electrical insulation materials, such as the insulation layer of wires, which is almost completely replaced by rubber, and can be used for heat-resistant electrical wires, wire and cable bushings, etc. Used in automobiles, can be used as steering wheel, top cover plate, cushion, etc. Used in construction, can be used as a variety of profiles, such as pipe, rod, profile, door and window frame, interior decoration materials, water pipe and so on; Used as chemical equipment, can be processed into a variety of chemical resistant pipes, containers and anti-corrosion materials. Soft PVC can also be made into a variety of pipes, films, sheets and other products with toughness and flexural resistance, which can be used to make packaging materials, rain gear, agricultural films and so on. PVC paste can be coated on cotton cloth, paper, heated at 140 ~ 145 ° C soon gelatinized, formed into a film, and then pressed by the roller, that is, artificial leather, can be made into a variety of products. Polyvinyl chloride foam is also commonly used as padding, slippers and thermal insulation, sound insulation materials.
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