About the classification of polyvinyl chloride pvc
General-purpose PVC resin is formed by the polymerization of vinyl chloride monomer under the action of an initiator; high degree of polymerization PVC resin refers to a resin that is polymerized by adding a chain extender to the vinyl chloride monomer polymerization system; cross-linked PVC resin is A resin obtained by adding a crosslinking agent containing diene and polyene to the vinyl chloride monomer polymerization system.
According to the method of obtaining vinyl chloride monomer, it can be divided into calcium carbide method, ethylene method and imported monomer method. According to the polymerization method, PVC can be divided into four categories: suspension method PVC, emulsion method PVC, bulk method PVC, solution method PVC. Suspension-processed polyvinyl chloride is the one with the largest output, accounting for about 80% of the total output of PVC.