聚丙烯网络合成

SYNTHESIS OF POLYPROPYLENE NETWORKS[KH+2mm]

用固相两步法合成了聚丙烯（ＰＰ）网络。首先将ＰＰ用马来酸酐（ＭＡＨ）功能化，再加入交联剂己二胺（ＨＤＡ）或聚乙烯醇（ＰＶＡ）使ＰＰ网络化。研究了在该方法中反应条件与ＰＰ网络的凝胶含量关系。结果表明，当引发剂过氧化苯甲酰（ＢＰＯ）用量低于０．８３×１０－３ｍｏｌ时，凝胶含量随ＢＰＯ增加而迅速升高，ＢＰＯ用量高于１．６５×１０－３ｍｏｌ时，凝胶含量基本不再变化，控制反应的最佳时间为２５～３０ｍｉｎ。

The polypropylene(PP) networks were synthesized by means of solid phase two step. PP was functioned with maleic anhydride,after that the PP was networkes by adding hexanediamine and polyvinyl alcohol as crosslinking agent. The relation of reaction condition on gel fraction of PP networks has been discussed. The results show that initiator content is lower than 0.83×10 -3 mol, the gel fraction increases with increasing of intiator content, when initiator is more than 1.65×10 -3 mol, the gel fraction increases hardly. The best reaction time is 25～30 min, both controlling degradation of PP and suitable crosslinking density.