Fabrication of surface-treated BN/ETDS composites for enhanced thermal and mechanical properties

被引：54

作者：

Alm, Kisang ^{[1
]}

Kim, Kiho ^{[1
]}

Kim, Jooheon ^{[1
]}

机构：

[1] Chung Ang Univ, Sch Chem Engn & Mat Sci, Seoul 156756, South Korea

来源：

CERAMICS INTERNATIONAL | 2015年 / 41卷 / 08期

关键词：

Composites; Thermal conductivity; Nitrides; Surface treatment; PARTICLE-SIZE; CONDUCTIVITY; AL2O3; HYBRID;

D O I：

10.1016/j.ceramint.2015.04.006

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The ceramic/polymer composites based on epoxy-terminated dimethylsiloxane (BIDS) and boron nitride (BN) were prepared for use as thermal interface materials (TIMs). 250 mu m-sized BN was used as a filler to achieve high-thermal-conductivity composites. To improve the interfacial adhesion between the BN particles and the ETDS matrix, the surface of BN particles were modified with silica via the sol gel method with tetraethyl orthosilicate (TEOS). The interfacial adhesion properties of the composites were determined by the surface free energy of the particles using a contact angle test The surface-modified BN/ETDS composites exhibited thermal conductivities ranging from 0.2 W/m K to 3.1 W/m K, exceeding those of raw BN/ETDS composites at the same weight fractions. Agari's model was used to analyze the measured thermal conductivity as a function of the SiO2-BN concentration. Moreover, the storage modulus of the BN/ETDS composites was found to increase with surface modification of the BN particles. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：9488 / 9495

页数：8

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