PVC, the abbreviation PVC (Polyvinyl chloride polymer = PVC molecular structure), is formed by the polymerization of vinyl chloride in the role of initiator thermoplastic resin. Is a homopolymer of vinyl chloride. Homopolymers and copolymers of vinyl chloride system called vinyl chloride resin. PVC as a white amorphous powder, the degree of branching is small. Industrial production of PVC molecular weight generally in the range of 50,000 to 120,000, having a large polydispersity, molecular weight increases with lowering the polymerization temperature; no fixed melting point PVC plastic pipe manufacturers, 80 ~ 85 ℃ begins to soften, 130 ℃ change for viscoelastic state, 160 ~ 180 ℃ began to change for the viscous flow state; has good mechanical properties, tensile strength of about 60MPa PVC plastic pipe shaped, impact strength 5 ~ 10kJ / m2; has excellent dielectric properties. However, poor stability to light and heat, at or above 100 ℃ by prolonged exposure to sunlight, it will decompose to generate hydrogen chloride PVC plastic pipe, and further autocatalytic decomposition, cause discoloration, physical and mechanical properties is also decreased rapidly, in practice stabilizer must be added to increase the heat and light stability. PVC composition structure qualities yellowish translucent and shiny. Transparency better than polyethylene, polypropylene, polystyrene poor, with the additive, divided into soft and hard PVC plastic PVC pipe prices, soft products soft and tough, feel sticky, hard ware harder than low density polyethylene, polypropylene and below, will appear at the inflection bleaching. Common products: plates, pipes, shoes, toys, doors and windows, wire jacket, stationery, packaging boxes. Qingdao PVC plastic pipe | PVC plastic pipe | sea Widex Widex provided by Qingdao Rubber Material Co., Ltd. Widex Qingdao Rubber Material Co., Ltd. (www.haihuidaxiangsu.com) strong, credible, in Qingdao, Shandong industrial products industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the sea Widex and you work into the brilliant, for a better future!