江苏快3

平达塑料防腐管材

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PVC管材和PPH管材、PP管材的区别

PVC管材和PPH管材、PP管材的区别

PPH管材PP管材等聚烯烃不同,聚氯乙烯的主链上带有一个极性侧基(CL,电子云的不均匀分布.造成聚氯乙烯树脂结构规整度下降.结晶度低,熔融温度较低.同时分子链柔性下降.密度升高,我们将它归人刚性链范铸,这些都是相对于PPH管材、PP管材聚烯烃材料而言。

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