The main classification of PVC - Exhibition

1、According to the scope of application, PVC can be divided into: general-purpose PVC resin, high degree of polymerization PVC resin, cross-linked PVC resin. General type PVC resin is formed by polymerization of vinyl chloride monomer under the action of initiator; high polymerization degree PVC resin refers to resin which is polymerized by adding chain extender in the polymerization system of vinyl chloride monomer; crosslinked PVC resin is And a resin obtained by polymerizing a crosslinking agent containing diene and polyene in a vinyl chloride monomer polymerization system.

2、According to the method of obtaining vinyl chloride monomer, it can be divided into calcium carbide method, ethylene method and import (EDC, VCM) monomer method (conventionally, ethylene method and import monomer method are collectively referred to as ethylene method).

3、 According to the polymerization method, polyvinyl chloride can be divided into four categories: suspension of polyvinyl chloride, emulsion of polyvinyl chloride, bulk PVC, solution of polyvinyl chloride. Suspension Polyvinyl chloride is the largest yield of a variety, accounting for about 80% of total PVC production. Suspension Polyvinyl chloride is divided into six models according to the absolute viscosity: XS-1, XS-2 ... XS-6; XJ-1, XJ-2 ..., XJ-6. X-suspension method; S-loose type; J-tight type.
4.According to the amount of plasticizer content, often PVC plastic plastic is divided into: no plasticized PVC, plasticizer content of 0; hard PVC, plasticizer content of less than 10%; semi-rigid PVC, plasticizer content For the 10-30%; soft PVC, plasticizer content of 30-70%; PVC paste plastic, plasticizer content of 80% or more.