Trace water in the initiator system is an important factor which affects the initiating terminal group structure and the performance of the random copolymer of ethylene oxide and propylene oxide.
引发体系中的微量水分是影响环氧乙烷环氧丙烷无规聚醚起始端基结构，并进一步影响其分子量和使用性能的重要因素。
This paper studied the structure and properties of propylene-ethylene block copolymer (PP-B) as speciality resin for tubing.
研究了乙丙嵌段共聚聚丙烯(PP - B)管材专用树脂的结构与性能。
The modification of polypropylene (PP) and its blends with low molecular weight ethylene-propylene copolymer (LMW-EP) was studied in this work.
本文研究了采用低分子量乙丙共聚物（LMW-EP）对聚丙烯（PP）及其共混体系的改性。
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