电压稳定剂接枝改善聚丙烯基绝缘材料性能研究  

Properties of Polypropylene Based Insulating Materials Improved by Grafting Voltage Stabilizer

作　　者：邵满智 万玉鑫 牛越 李春阳[1] 赵洪[1] 岳振国 SHAO Manzhi;WAN Yuxin;NIU Yue;LI Chunyang;ZHAO Hong;YUE Zhenguo(Key Laboratory of Engineering Dielectrics and Its Application,Ministry of Education,Harbin University of Science and Technology,Harbin 150080,China;Chifeng Power Supply Company,State Grid East Inner Mongolia Electric Power Company Limited,Chifeng 024000,China;Zhejiang Chenguang Cable Company Limited,Pinghu 314204,China)

机构地区：[1]哈尔滨理工大学工程电介质及其应用技术教育部重点实验室,黑龙江哈尔滨150080 [2]国网内蒙古东部电力有限公司赤峰供电公司,内蒙古赤峰024000 [3]浙江晨光电缆股份有限公司,浙江平湖314204

出　　处：《绝缘材料》2022年第5期35-41,共7页Insulating Materials

基　　金：国家自然科学基金资助项目(U20A200815)。

摘　　要：选取芳香酮类聚合物4-丙烯氧基-2-羟基二苯甲酮(AOHBP)为电压稳定剂,同时为了抑制其在聚合物中的迁移和析出,采用过氧化二异丙苯(DCP)作为接枝反应引发剂,将AOHBP接枝在PP上,并加入防降解添加剂苯乙烯衍生物(St)来抑制电压稳定剂接枝过程导致的材料降解,然后对改性材料的理化特性进行表征,最后对改性材料电树枝的引发特性和直流击穿特性进行了研究。结果表明:AOHBP可以通过DCP引发的自由基反应接枝在PP基体上,且St和AOHBP可以共同抑制接枝反应过程中PP的大分子降解;接枝改性PP绝缘材料可显著抑制电树枝的引发并提高其直流电气强度。The aromatic ketone polymer 4-allyloxy-2-hydroxybenzophenone(AOHBP)was selected as voltage stabilizer.In order to inhibit the migration and precipitation of voltage stabilizer in polymer,dicumyl peroxide(DCP)was used as initiator to graft AOHBP on PP,and an anti-degradation additive styrene derivative(St)was added to inhibit the material degradation caused by the grafting process of voltage stabilizer.The physical and chemical properties of the modified material were characterized,and the electrical treeing initiation characteristics and DC breakdown characteristics of the modified material were studied.The results show that the AOHBP can graft on the PP matrix by the free radical reaction initiated by DCP,and the St and AOHBP can inhibit the macromolecular degradation of PP during the grafting reaction process synergistically.The grafting modified PP insulating material can inhibit the initiation of electrical tree and improve the DC electric strength significantly.

关 键 词：聚丙烯 电压稳定剂 电树枝 直流击穿 

分 类 号：TM215[一般工业技术—材料科学与工程]