无卤阻燃聚烯烃化学交联反应动力学研究  

Study on Chemical Cross-Linking Kinetics of Halogen-Free Fire-Retardant Polyolefine

作　　者：宋成伟[1] 韩志东[1] 赵洪[2] 

机构地区：[1]哈尔滨理工大学材料科学与工程学院,黑龙江哈尔滨150040 [2]哈尔滨理工大学电气与电子工程学院,黑龙江哈尔滨150040

出　　处：《现代塑料加工应用》2007年第5期31-34,共4页Modern Plastics Processing and Applications

摘　　要：以过氧化二异丙苯(DCP)为引发剂、氢氧化铝(ATH)为阻燃剂、乙烯/醋酸乙烯共聚物(EVA)/线性低密度聚乙烯(LLDPE)共混物为基体树脂,研究了化学交联无卤阻燃聚烯烃体系的交联反应动力学,重点分析了阻燃剂用量和树脂共混物的配比对交联反应的影响。结果表明,化学交联无卤阻燃聚烯烃的初期交联反应为一级反应,体系中ATH的用量虽然在一定程度上阻碍了交联反应的进行,但未对动力学参数造成显著影响,DCP为2.0份、EVA为73份、LLDPE为30份、ATH为140份时无卤阻燃聚烯烃体系的反应活化能为122.8 kJ/mol。Chemical cross-linking kinetics of halogen-free fire-retardant polyolefin based on EVA/PE, dicumyl peroxide （DCP） and aluminium hydroxide （ATH） were investigated. The effects of ATH loadings and EVA/LLDPE ratio on the kinetic parameters were discussed in detail. The results show that the earlier cross-linking reaction of halogen-free fireretardant polyolefin is first order. No obvious effects of the loading of ATH are found on the kinetic parameters although the addition of ATH slows down the reaction rate. The activation energy of the halogen-free fire-retardant polyolefin is 122. 8 kJ/mol when DCP is 2.0 phr,EVA is 73 phr,LLDPE is 30 phr,ATH is 140 phr.

关 键 词：乙烯/醋酸乙烯共聚物 线性低密度聚乙烯 过氧化二异丙苯 无卤阻燃 化学交联 动力学 

分 类 号：O631.5[理学—高分子化学]