PVC Vinyl chloride homopolymers and vinyl chloride copolymers are collectively known as vinyl chloride resins.
PVC is an amorphous structure of white powder, the degree of branching is small, the relative density is about 1.4, the glass transition temperature is 77~90 °C, about 170 °C begins to decompose, the stability of light and heat is poor, above 100 °C or after long-term sun exposure, it will decompose and produce hydrogen chloride, and further automatic catalytic decomposition, causing discoloration, physical and mechanical properties are also rapidly declining, stabilizers must be added in practical applications to improve the stability of heat and light.
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