超支化改性氮化硼环氧绝缘涂料的制备与性能  

Preparation and Properties of Hyperbranched Modified Boron Nitride Epoxy Insulating Coatings

作　　者：张志浩 魏铭 刘传奇 乔星明 程秋月 牛红让 沈建强 ZHANG Zhi-hao;WEI Ming;LIU Chuan-qi;QIAO Xing-ming;CHENG Qiu-yue;NIU Hong-rang;SHEN Jian-qiang(School of Chemistry,Chemical Engineering and Life Sciences,Wuhan University of Science and Technology,Wuhan 430000,China;Zhejiang TIANNV Group Paint Co.,Ltd.,Jiaxing 314000,China)

机构地区：[1]武汉理工大学化学化工与生命科学学院,湖北武汉430000 [2]浙江天女集团制漆有限公司,浙江嘉兴314000

出　　处：《塑料科技》2022年第8期10-15,共6页Plastics Science and Technology

摘　　要：利用KH550改性氮化硼(BN)得到f-BN粒子,对f-BN进行超支化改性得到BN-HBP,将BN-HBP加入无溶剂环氧涂料,制备EP/BN-HBP复合涂料。研究BN-HBP不同添加量下EP/BN-HBP复合涂层的性能。结果表明:与未改性h-BN相比,BN-HBP有效提高无溶剂环氧涂料的力学性能、体积电阻率、电气强度和防腐性能。随着BN-HBP填充量的增加,EP/BN-HBP复合涂层的体积电阻率、电气强度和耐腐蚀性均呈现先增加后下降的趋势。在25℃下,BN-HBP的添加量为0.75%时,EP/BN-HBP复合涂层的体积电阻率达到最大值。在100℃下,BN-HBP的添加量为0.5%时,EP/BN-HBP复合涂层的电气强度达到最大。BN-HBP的添加量为0.75%时,EP/BN-HBP复合涂层的耐腐蚀性能达到最佳。Boron nitride(BN) was modified by KH550 to obtain f-BN particles,and BN-HBP was obtained by hyperbranched modification of f-BN.BN-HBP was added to solvent-free epoxy coating to prepare EP/BN-HBP composite coating.The properties of EP/BN-HBP composite coatings with different additions of BN-HBP were studied.The results show that compared with unmodified h-BN,BN-HBP effectively improves the mechanical properties,volume resistivity,electrical strength and corrosion resistance of solvent-free epoxy coatings.With the increasing of BN-HBP filling amount,the volume resistivity,electrical strength and corrosion resistance of EP/BN-HBP composite coating increase first and then decrease.At 25 ℃,when the addition amount of BN-HBP is 0.75%,the volume resistivity of EP/BN-HBP composite coating reach the maximum.At 100 ℃,when the addition amount of BN-HBP is 0.5%,the electrical strength of EP/BNHBP composite coating reaches the maximum.When the addition amount of BN-HBP is 0.75%,the corrosion resistance of EP/BN-HBP composite coating is the best.

关 键 词：改性六方氮化硼 超支化聚酯 绝缘性能 无溶剂环氧涂料 电气强度 

分 类 号：TQ633[化学工程—精细化工]