PVC Resin Sg8
Introduction: Pvc-sg8 resin has good processing performance, and can be widely used in the production of building materials, food and drug packaging materials, sheets, pipe fittings, plexiglass substitutes, etc., with a broad market prospect.
Specification parameters:Pvc-sg8 is a polymer compound made from vinyl chloride monomer (VCM). Its structural unit (-CH2-CHcl -)n is the degree of polymerization, usually between 590-1500.In the process of repolymerization, due to the polymerization process, reflecting conditions, reactant composition, additives and other factors, can produce 8 different types of POLYvinyl chloride resin, so the properties of various resins are different.According to the amount of vinyl chloride contained in polyvinyl chloride resin can be divided into: industrial grade, food grade, health grade three.PVC for amorphous structure of white powder, branched degree is small, relative density 1.40 g/cm squared, glass transition temperature of 77 ~ 90 ℃, 170 ℃ or so began to decompose, poor stability to heat and light, in more than 100 ℃ or the sun for a long time, will decompose and produce hydrogen chloride, and further automatic catalytic decomposition, cause discoloration, physical and mechanical properties also fell rapidly, must be added in the practical application of stabilizers in order to improve the stability of heat and light.The molecular weight of industrial PVC is generally in the range of 50,000 ~ 110,000, with greater polydispersity, molecular weight increases with the decrease of polymerization temperature;Without a fixed melting point, it began to soften at 80 ~ 85 ° C, become viscoelastic state at 130 ° C, and become viscous flow state at 160 ~ 180 ° C.Good mechanical properties, tensile strength of about 60MPa, impact strength of 5 ~ 10kJ/m2;Excellent dielectric properties.
Usage: Industrial and agricultural films, hoses, artificial leather, high strength pipes, transparent products, hard pipes, hard sheets, single filaments, pipes, profiles.
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