Its scientific name is PVC.

PVC is polyvinyl chloride, which is used as initiator such as peroxide and azo compound. Or a polymer polymerized under the action of light and heat according to a free radical polymerization mechanism. Vinyl chloride homopolymer and vinyl chloride copolymer are collectively referred to as vinyl chloride resin.

PVC is a kind of white powder with amorphous structure, which has poor light and thermal stability, no fixed melting point, good mechanical properties and excellent dielectric properties.

PVC used to be the largest general-purpose plastic in the world, and it was widely used. Widely used in building materials, industrial products, daily necessities, floor leather, floor tiles, artificial leather, pipes, wires and cables, packaging films, bottles, foaming materials, sealing materials, fibers and so on.

Poly (vinyl chloride) (PVC) is a kind of high molecular material with a chlorine atom instead of a hydrogen atom in polyethylene, and it is an amorphous polymer with a few crystal structures.

The structure of this material is as follows: [― CH2 ― chcl ――] n. PVC is a linear polymer, in which VCM monomers are mostly connected in a head-to-tail structure. Carbon atoms are arranged in a zigzag pattern, and all atoms are connected by σ bonds. All carbon atoms are sp3 hybrid.

There is a short syndiotactic structure in PVC molecular chain. With the decrease of polymerization temperature, syndiotactic regularity increases. In the macromolecular structure of PVC, there are unstable structures such as head structure, branched chain, double bond, allyl chloride and tertiary chloride, which are difficult to resist thermal deformation and aging. After pretending to be crosslinked, this shortcoming can be eliminated.