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.
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页码：17614 / 17620
页数：7
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