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用二乙烯基苯 ( DVB)、二甲基丙烯酸乙二醇酯 ( EGDM)、三羟甲基丙烷三甲基丙烯酸酯( TMPTMA)、异氰脲酸三烯丙酯 ( TAIC)作为助交联剂对间规聚丙烯 ( s PP)进行了过氧化物交联 .结果表明 ,多官能团单体可以明显抑制间规聚丙烯在交联过程中的 β降解 ,促进 s PP交联 .由DVB和过氧化苯甲酰 ( BPO)组成的交联体系可以得到高交联度的 s PP交联产物 .随 DVB和 BPO用量增加 ,交联产物的凝胶含量增大 .交联反应动力学研究表明 ,凝胶生成速率随 BPO和 DVB用量增加而增大 ,呈动力学一级反应 .由凝胶生成速率与交联温度的关系曲线得到交联反应的表观活化能为 62 .5k J/mol
DVB was used as co-cross linking with divinylbenzene (DVB), ethylene glycol dimethacrylate (EGDM), trimethylolpropane trimethacrylate (TMPTMA) and triallyl isocyanurate (TAIC) The results showed that the polyfunctional monomer could significantly inhibit the β degradation of syndiotactic polypropylene during the crosslinking process and promote the cross-linking of s PP.The DVB and Benzoyl peroxide (BPO) cross-linking system can be obtained s PP crosslinked products with high degree of crosslinking with the amount of DVB and BPO increased cross-linked product gel content increased cross-linking reaction kinetics showed , The gel formation rate increases with the amount of BPO and DVB increases, showing a kinetic first-order reaction.The apparent activation energy of the crosslinking reaction obtained by the gel formation rate and the crosslinking temperature was 62.5k J / mol