TEMPO氧化纳米纤维素/氮化硼导热绝缘复合纳米纸的制备及性能研究  

Preparation and Properties of TEMPO-oxidized Nanocellulose/Boron Nitride Thermal Insulation Composite Nanopaper

作　　者：熊宥皓 张天旭 马宇琪 覃天 赵永生 XIONG Youhao;ZHANG Tianxu;MA Yuqi;QIN Tian;ZHAO Yongsheng(School of Chemistry and Chemical Engineering,Northwestern Polytechnical University,Xi′an 710072,China;Queen Mary University of London Engineering School,Northwestern Polytechnical University,Xi′an 710072,China;State Key Laboratory of Polymer Material and Engineering,Sichuan University,Chengdu 610065,China;State Key Laboratory of Electrical Insulation and Power Equipment,Xi′an Jiaotong University,Xi′an 710049,China)

机构地区：[1]西北工业大学化学与化工学院,陕西西安710072 [2]西北工业大学伦敦玛丽女王大学工程学院,陕西西安710072 [3]四川大学高分子材料工程国家重点实验室,四川成都610065 [4]西安交通大学电力设备电气绝缘国家重点实验室,陕西西安710049

出　　处：《绝缘材料》2022年第12期46-51,共6页Insulating Materials

基　　金：高分子材料与工程国家重点实验室(四川大学)开放课题(No.sklpme2019-4-37);电力设备电气绝缘国家重点实验室(西安交通大学)开放课题(EIPE19201)。

摘　　要：采用真空抽滤法制备具有完整多层结构的TEMPO氧化纳米纤维素(TOCN)/氮化硼纳米片(BNNS)复合纳米纸,通过调控填料含量观察并分析复合纳米纸的表面形貌结构及界面相互作用力,测试复合纳米纸的电气强度和导热性能。结果表明:复合纳米纸厚度约为20μm,随BNNS含量增加,复合纸变脆、柔性下降,BNNS质量分数为50%的复合纳米纸综合性能优异,电气强度达23.2 kV/mm,面内、面间导热系数分别为3.07W/(m·K)和0.58 W/(m·K);通过仿真实验发现60℃温差下,复合纳米纸相比纯纤维素纸传热效率提升了267%。A TEMPO-oxidized nanocellulose(TOCN)/boron nitride nanosheet(BNNS) composite nanopaper with nacre-like multilayer structure was prepared through vacuum filtration method. The surface morphology and interfacial interaction of the composite nanopaper were observed and analyzed by adjusting the filler content, and the electric strength and thermal conductivity of the composite nanopaper were tested. The results show that the thickness of the composite nanopaper is about 20 μm, with the increase of BNNS content, the composite paper becomes brittle, and its flexible decreases. The composite nanopaper with 50% mass fraction of BNNS has excellent comprehensive performance, the electric strength is up to 23.2 kV/mm, and the in-plane and throughplane thermal conductivity are 3.07 W/(m·K) and 0.58 W/(m·K), respectively. Simulation results show that the heat transfer efficiency of composite nanopaper is 267% higher than that of pure cellulose paper under 60℃ of temperature difference.

关 键 词：耐高温绝缘电介质 复合纳米纸 电绝缘性能 导热性能 

分 类 号：TM215[一般工业技术—材料科学与工程]