硅烷交联聚丙烯的研究Ⅰ──引发剂用量、接枝剂用量和反应温度对凝胶率和熔体流动速率的影响

Studies on melt grafting of silanes onto polypropylene via extrusion I─The effect of initiator concen tration, graft monomer concentration and reaction temperature on gel fraction and melt flow rate

应用单螺杆挤出机对聚丙烯（ＰＰ）进行乙烯基三乙基硅烷（ＶＴＥＳ）接枝，然后在催化剂二月桂酸二丁基锡（ＤＢＴＤ１）存在下进行水解交联，对接枝产物的熔体流动速率（ＭＦＲ）和凝胶率（Ｇｅ）的影响因素进行了系统的研究。

Vinyltriethoxysilane (VTES) was grafted onto polypropylene (PP) using a single screw extruder. The grafted products were crosslinked in hot water in the presence of dibutyllin dilaurate (DBTDL). THe melt flow rate (MFR) and the gel fraction of grafted products were investigated.