双马来酰亚胺/BA/石墨介电材料的制备及性能研究  

Synthesis and Properties of BMI/BA/Graphite Dielectric Composites

作　　者：张璇[1] 梁国正[1] 晁芬[1] 刘继三[1] 王金合[1] 管兴华[1] 

机构地区：[1]西北工业大学理学院应用化学系,陕西西安710072

出　　处：《中国塑料》2007年第8期42-46,共5页China Plastics

摘　　要：采用原位聚合法将石墨与 N,N′-二氨基二苯甲烷型双马来酰亚胺(BMI)复合制备 BMI/石墨介电复合材料。研究了石墨对复合材料的介电性能的影响。结果表明,石墨含量的增加提高了材料的介电常数和介电损耗,在石墨含量为11.975%(质量分数,下同)左右时出现渗流效应。BMI/O,O-二烯丙基双酚 A(BA)/石墨介电材料的吸水率较小(低于1.7%)。湿热老化对材料的介电性能影响较大,其介电损耗最大增幅近26%。钛酸酯偶联剂NDZ-311可以显著改善石墨颗粒在 BMI 中的分散效果,同时可提高材料的介电常数。In this paper, BMI/BA/graphite composite was prepared via in situ polymerization. The dielectric constant （ε） and the dielectric loss （tang） of the composite increased significantly with the increasing graphite concentration. The percolation threshold of the composite was found to be 11. 975 %. The water absorption of the composite was less than 1.7 %. Hot-wet aging has effect on dielectric properties, the dielectric loss could be increased almost 26 %. The adoption of coupling agents. NDZ-311 significantly improved the dispersion of the graphite in BMI/BA, and dielectric constant was at the same time increased.

关 键 词：双马来酰亚胺 石墨 介电性能 吸水率 

分 类 号：TQ327[化学工程—合成树脂塑料工业]