文献类型：期刊文献

英文题名：Modification of the three-dimensional graphene aerogel self-assembled network using a titanate coupling agent and its thermal conductivity mechanism with epoxy composites

作者：Cui, Sufei[1];Wu, Wei[1,2];Liu, Chao[1];Wang, Yi[1];Chen, Qiming[1];Liu, Xingrong[1]

机构：[1]East China Univ Sci & Technol, Sino German Joint Res Ctr Adv Mat, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China;[2]Shenzhen Res Inst ECUST, Shenzhen 518063, Peoples R China

年份：2021

卷号：13

期号：43

起止页码：18247

外文期刊名：NANOSCALE

收录：;EI(收录号：20214711199634);WOS:【SCI-EXPANDED(收录号:WOS:000712452600001)】；

基金：This research is supported by National Government Guided Special Funds for Local Science and Technology Development (Shenzhen, China) (No. 2021Szvup041). The joint research project was funded by the Chinese German Centre for the Promotion of Science via the NSFC and DFG (No. GZ1448).

语种：英文

外文关键词：Epoxy resins - Coupling agents - Graphene - Thermal conductivity - Aerogels

摘要：Three-dimensional thermally conductive graphene aerogels have become more and more significant in practical thermal management applications. However, the interface between the graphene aerogel and the polymer has a strong interface thermal resistance, and the compatibility between the interfaces is also poor. In this study, a simple and versatile method for grafting graphene aerogels with titanate coupling agents on the surface was developed so that the modified graphene aerogels exhibit excellent thermal conductivity and mechanical properties and reduce the interface thermal resistance and increase the interface compatibility between graphene aerogels and epoxy resin. A high thermal conductivity of 2.53 W m(-1) K-1 was obtained under a low graphene load of 2.5 wt%, corresponding to a thermal conductivity enhancement of approximately 1388% compared with pure epoxy resin. It provides a facile new idea for the preparation of high-quality three-dimensional graphene epoxy composites.