Bioinspired Modification of h-BN for High Thermal Conductive Composite Films with Aligned Structure
Bioinspired Modification of h-BN for High Thermal Conductive Composite Films with Aligned Structure
复制标题
仿生改性 h-BN 制备具有排列结构的高导热复合薄膜
DOI：
10.1021/am507416y
复制
发表时间：
2015-03-18
影响因子：
9.5
通讯作者：
Xu, Jian
中科院分区：
文献类型：
--
作者：
Shen, Heng;Guo, Jing;Xu, Jian
With the development of microelectronic technology, the demand of insulating electronic encapsulation materials with high thermal conductivity is ever growing and much attractive. Surface modification of chemical inert h-BN is yet a distressing issue which hinders its applications in thermal conductive composites. Here, dopamine chemistry has been used to achieve the facile surface modification of h-BN microplatelets by forming a polydopamine (FDA) shell on its surface. The successful and effective preparation of h-BN@PDA microplatelets has been confirmed by SEM, EDS, TEM, Raman spectroscopy, and TGA investigations. The PDA coating increases' the dispersibility of the filler and enhances its interaction with PVA matrix as well. Based on the combination of surface modification and doctor blading, composite films with aligned h-BN@ PDA are fabricated. The oriented fillers result in much higher in-plane thermal conductivities than the films with disordered structures produced by casting or using the pristine h-BN. The thermal conductivity is as high as 5.4 W m(-1) K-1 at 10 vol % h-BN@PDA loading. The procedure is eco-friendly, easy handling, and suitable for the practical application in large scale.
