高导热高强度ANF/BNNS-OH复合绝缘纸制备及性能分析  

Preparation and performance analysis of ANF/BNNS-OH composite insulating paper with high thermal conductivity and high strength

作　　者：任俊文 卞超 魏佳 卓然 卿湫惋喻 高萌 滕富莉 贾申利 REN Junwen;BIAN Chao;WEI Jia;ZHUO Ran;QING Qiuwanyu;GAO Meng;TENG Fuli;JIA Shenli(College of Electrical Engineering,Sichuan University,Chengdu 610065,China;Electric Power Research Institute of CSG,Guangzhou 510623,China)

机构地区：[1]四川大学电气工程学院,四川成都610065 [2]南方电网公司电力科学研究院有限公司,广东广州510623

出　　处：《绝缘材料》2024年第11期51-58,共8页Insulating Materials

基　　金：国家自然科学基金面上项目(52377028);四川省重点研发项目(2023YFG0236)。

摘　　要：将一维ANF与二维边缘羟基化BNNS(BNNS-OH)混合后利用真空抽滤技术,制备出具有“砖-泥”结构的ANF/BNNS-OH复合绝缘纸,并对复合绝缘纸的力学性能、导热性能、介电性能和击穿性能进行研究。结果表明:BNNS-OH在ANF中有序排列,结构致密,ANF/BNNS-OH复合绝缘纸具有优异的力学性能、导热性能和击穿性能。当BNNS-OH的质量分数为10%时,复合绝缘纸的拉伸强度和电气强度分别为242.4 MPa和312.9 kV/mm;当BNNS-OH的质量分数为40%时,复合绝缘纸的热导率达到了6.76 W/(m·K),比纯ANF绝缘纸提高了158.02%;同时复合绝缘纸具有优异的高温宽频介电稳定性。The one-dimensional ANF and two-dimensional edge-hydroxylated BNNS(BNNS-OH)were mixed to prepare ANF/BNNS-OH composite insulating papers with“brick-mud”structure by vacuum filtration technology.The mechanical properties,thermal conductivity,dielectric properties,and breakdown properties of the composite insulating paper were studied.The results show that the BNNS-OH arranges in ANF orderly,and the structure is dense.The ANF/BNNS-OH composite insulating paper has excellent mechanical properties,thermal conductivity,and breakdown properties.When the mass fraction of BNNS-OH is 10%,the tensile strength and electric strength of the composite insulating paper are 242.4 MPa and 312.9 kV/mm,respectively.When the mass fraction of BNNS-OH is 40%,the thermal conductivity of the composite insulating paper reaches 6.76 W/(m·K),which is 158.02%higher than that of pure ANF insulating paper.At same time,the composite insulating paper has excellent high temperature wideband dielectric stability.

关 键 词：芳纶纳米纤维 氮化硼纳米片 热导率 介电性能 电气强度 

分 类 号：TM215[一般工业技术—材料科学与工程]