多壁碳纳米管和聚醚砜改性双马来酰亚胺复合材料的力学性能与介电性能  

Mechanical Properties and Dielectric Properties of Bismaleimide Composites Modified by Multi-walled Carbon Nanotubes and Polyethersulfone

作　　者：陈宇飞[1,2] 郭红缘 韩阳[2] 滕成君 CHEN Yu-fei;GUO Hong-yuan;HAN Yang;TENG Cheng-jun(Key Laboratory of Engineering Dielectrics and Its Application,Ministry of Education,Harbin University of Science and Technology, Harbin 150080,China;School of Materials Science and Engineering,Harbin University of Science and Technology,Harbin 150040,China;The centre of disease control,Harbin 150000,China)

机构地区：[1]哈尔滨理工大学工程电介质及应用技术教育部重点实验室,黑龙江哈尔滨150080 [2]哈尔滨理工大学材料科学与工程学院,黑龙江哈尔滨150040 [3]哈尔滨市香坊区疾病控制中心,黑龙江哈尔滨150000

出　　处：《哈尔滨理工大学学报》2018年第5期147-150,共4页Journal of Harbin University of Science and Technology

基　　金：国家自然科学基金(21604019);哈尔滨创新人才专项(2015RAXXJ029);哈尔滨理工大学创新实践项目资助

摘　　要：以4,4’-二氨基二苯甲烷双马来酰亚胺(MBMI)为反应前驱体,3,3’-二烯丙基双酚A(BBA)和双酚A双烯丙基醚(BBE)为活性稀释剂,制备MBMI-BBA-BBE(MBAE)聚合物基体。采用聚醚砜(PES)和酸化修饰的多壁碳纳米管(MWCNTs)为改性剂,通过原位聚合法制备MWCNTs/PES-MBAE复合材料。研究复合材料的力学性能和介电性能。MWCNTs/PES-MBAE复合材料的力学性能采用冲击强度和弯曲强度进行表征,结果表明:冲击强度和弯曲强度均随着MWCNTs含量的升高呈现先增大后减小的趋势,且在质量分数为0. 02%时达到最高,分别提升了74%和53%。复合材料介电常数随MWCNTs含量的升高而降低,在低频区变化不大,当频率大于104Hz时下降幅度增大;介电损耗略有升高,在频率小于104Hz仍为千分位,可作为常规绝缘材料使用。3,3’-diallyl bisphenol A(BBA)and bisphenol-A diallyl ether(BBE)were used as reactive diluent to toughen 4,4’-diamino diphenyl methane bismaleimide(MBMI)and obtained MBMI-BBA-BBE(MBAE)polymer matrix.Polyether sulfone(PES)and acid-MWCNTs as modifier,MWCNTs/PES-MBAE composite was prepared through in-situ polymerization method.The mechanical properties of MWCNTs/PES-MBAE composites were characterized by impact strength and flexural strength.The results showed that the impact strength and bending strength were both changed with the content of MWCNTs and showed a trend of first increases and then decreases,increased by 74%and 53%,respectively,when the content of acid-MWCNTs was 0.02wt%.The change of dielectric constant for composite was not remarkable in low frequency area,when the frequency was more than 10 4 Hz they decreased obviously.Dielectric loss of composites increased slightly,but they were less than 1×10-3,this composites could be used as a conventional insulation materials.

关 键 词：多壁碳纳米管 聚醚砜 双马来酰亚胺 力学性能 介电性能 

分 类 号：TB332[一般工业技术—材料科学与工程]