Phase change materials coated with modified graphene-oxide as fillers for silicone rubber used in thermal interface applications

被引：14

作者：

Feng Jing ^{[1
,2
]}

Liu Zhan-jun ^{[1
]}

Zhang Dong-qing ^{[1
]}

He Zhao ^{[1
,2
]}

Tao Ze-chao ^{[1
]}

Guo Quan-gui ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Coal Chem, CAS Key Lab Carbon Mat, Taiyuan 030001, Shanxi, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

来源：

NEW CARBON MATERIALS | 2019年 / 34卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Thermal interface materials; Phase change fillers; Graphene-oxide; Thermal transfer; Flexibility;

D O I：

10.1016/S1872-5805(19)60011-9

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Graphene oxide prepared by the Hummers method was chemically modified by 3-aminopropyltriethoxysilane and spherical paraffin@ modified graphene-oxide particles (P@m-GO) with a core-shell structure were obtained by an emulsion method. P@m-GO filler/silicone rubber (SIR) matrix composites (P@m-GO/SIR) were prepared by dispersing different amounts of P@m-GO in the SIR precursors, followed by curing and were used as thermal interface materials ( TIMs). Results indicate that the best TIM had a P@m-GO loading of 60 wt.% and had both a high thermal conductivity (1.248 W.m(-1).K-1) and a high latent heat (88.7 J.g(-1)). Its compression elastic modulus (1.01 MPa) was only one-eighth of that of the pristine SIR (8. 16 MPa) due to the plasticity of the paraffin. The paraffin leakage under pressure was low (below 3.98 wt.% ) before and after thermal cycling 50 times. These favorable thermal and mechanical properties together with the good cycling stability make it a promising TIM for electronic devices.

引用

页码：188 / 195

页数：8