High thermal conductivity composites obtained by novel surface treatment of boron nitride

被引：20

作者：

Wie, Jaehyun ^{[1
]}

Kim, Kwanwoo ^{[1
]}

Kim, Jooheon ^{[1
]}

机构：

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

来源：

CERAMICS INTERNATIONAL | 2020年 / 46卷 / 11期

基金：

新加坡国家研究基金会;

关键词：

Surface treatment; High thermal conductivity; Surface analysis; IN-SITU POLYMERIZATION; MECHANICAL-PROPERTIES; ALUMINUM NITRIDE; EPOXY COMPOSITES; FABRICATION; POLYSILAZANE; FILMS;

D O I：

10.1016/j.ceramint.2020.04.063

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：

Thermal conductivity of boron nitride is extremely anisotropic. To solve this problem, aggregate boron nitride (A-BN) was fabricated using binder. However, it is easily broken by external forces and has poor wettability. In this study, a new substance that overcomes these issues was introduced. Its coating material was prepared through a hydrolysis and condensation reaction involving polysilazane (PSZ) and (3-glycidyloxypropyl)tri-methoxysilane (GPTMS); The PSZ protected the shape of the A-BN and the GPTMS enhances its wettability. After solving these inherent problems of A-BN, the thermal conductivity was 7.014 W/m*K at a filler fraction of 50 vol %, which was 50 times higher than that of a neat epoxy composite.

引用

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页码：17614 / 17620

页数：7

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