Improved thermal conductivity of epoxy resins using silane coupling agent-modified expanded graphite

被引：10

作者：

Jiang, Di ^{[1
]}

Chu, Na ^{[2
]}

Zhang, Yue ^{[3
]}

Wang, Wei-Dong ^{[4
]}

Jin, Fan-Long ^{[5
]}

Park, Soo-Jin ^{[6
]}

机构：

[1] Carbon Fiber Mat Res Inst, Jilin Inst Chem Technol, Jilin, Peoples R China

[2] Jilin Univ, Coll Chem, Changchun, Peoples R China

[3] Res Inst Jilin Petrochem Co, PetroChina, Jilin, Peoples R China

[4] Wuzhou Univ, Sch Mech & Resource Engn, Wuzhou, Peoples R China

[5] Jilin Inst Chem Technol, Dept Polymer Mat, Jilin, Peoples R China

[6] Inha Univ, Dept Chem, Incheon, South Korea

来源：

JOURNAL OF APPLIED POLYMER SCIENCE | 2023年 / 140卷 / 05期

关键词：

conducting polymers; morphology; thermal properties; MECHANICAL-PROPERTIES; SURFACE MODIFICATION; FLAME RETARDANCY; IMPACT STRENGTH; NANOCOMPOSITES; ENHANCEMENT;

D O I：

10.1002/app.53417

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A silane coupling agent was used to modify the surface of expanded graphite (EG), which was subsequently used as a thermally conductive filler to fabricate diglycidylether of bisphenol-A (DGEBA)/EG composites with high thermal conductivity via hot blending and compression-curing processes. The surface characteristics of silane coupling agent-modified EG (Si@EG) were characterized by a variety of analytical techniques. The effects of the Si@EG content on the thermal conductivity, thermal stability, impact strength, and morphology of the DGEBA/Si@EG composites were investigated. The results revealed that the addition of 80 wt.% Si@EG increased the thermal conductivity of the composites from 0.17 to 10.56 W/m K, which was 61.1 times higher than that of pristine DGEBA. The initial decomposition temperature of the composite containing 80 wt.% Si@EG was 60.6? higher than that of pristine DGEBA. The impact strength of the composites decreased from 2.0 to 0.87 kJ/m(2) when the Si@EG content increased from 0 to 80 wt.%. The scanning electron microscopy images of the fractured surfaces revealed that the EG sheets in the DGEBA matrix formed a continuous thermally conductive path at high Si@EG contents.

引用

页数：11