The free volume properties of high impact polystyrene (HIPS)-low density polyethylene (LDPE) blend have been investigated by means of positron annihilation lifetime spectra (PALS).

不同组成的高冲聚苯乙烯（HIPS）和低密度聚乙烯（LDPE）共混物的正电子湮没寿命谱被测量，结果表明HIPS和LDPE是不相溶共混物。

youdao

Ultra high molecular weight polyethylene pipe (UHMWPE)has excellent properties of impact-resistance anti-corrosion abrasion-resistance self-lubricating non-toxicity and low temperature resistance.

超高分子量聚乙烯（UHMWPE）管道具有优异的耐冲击、耐腐蚀、耐磨损、自润滑、无毒和耐低温等性能，其寿命是普通钢管的7～8倍。

youdao