Is the pvc chair sunproof?
February 22, 2023
TDDchem.com
6890
不耐晒。PVC为无定形结构的白色粉末，支化度较小，玻璃化温度77~90℃，170℃左右开始分解，对光和热的稳定性差，在100℃以上或经长时间阳光曝晒，就会分解而产生氯化氢，并进一步自动催化分解，引起变色，物理机械性能也迅速下降。
PVC chair is not sunproof. PVC is a white powder without regular structure, it has small branching degree, the glass transition temperature is 77~90 ℃, and the decomposition begins at about 170 ℃. The stability to light and heat is poor. When it is above 100 ℃ or exposed to the sun for a long time, it will decompose to produce hydrogen chloride, and further autocatalytic decomposition will cause discoloration, and the physical and mechanical properties will also decline rapidly.
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