文献类型：期刊文献

英文题名：Preparation and mechanism research of bio-inspired dopamine decorated expanded graphite/silicone rubber composite with high thermal conductivity and excellent insulation

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

年份：2021

卷号：32

期号：32

外文期刊名：NANOTECHNOLOGY

收录：;EI(收录号：20212310447064);WOS:【SCI-EXPANDED(收录号:WOS:000655294000001)】；

基金：The work was funded by the Chinese German Centre for the Promotion of Science via the National Natural Science Foundation of China (NSFC) and Deutsche Forschungsgemeinschaft (DFG) under grant number GZ1448.

语种：英文

外文关键词：expanded graphite; 3D networks; thermal conductivity; electrical insulating; polymer composites

摘要：This study looked at the process of designing and synthesized expanded graphite (EG) and modifying it with bio-inspired dopamine (DOPA). This is a process used to improve the thermal conductivity and dielectric properties of methyl vinyl silicone rubber (VMQ). The results demonstrated that the EG-DOPA-VMQ composites acquired an exceptional thermal conductivity of 1.015 W mK(-1) at the loading of 10 wt%, approximately 480% higher than that of pure silicone rubber (0.175 W mK(-1)). This enhancement is mainly attributed to the improved dispersion capability of EG-DOPA and the robust interfacial interaction between EG-DOPA-VMQ interfaces; specifically, this is the result when compared with pristine EG. Moreover, throughout this process, the composites maintained an excellent insulating property with a resistance of approximate to 10(12) omega center dot cm; this particular result was due to the DOPA deposited on EG surfaces because they acted as an insulating layer, inhibiting the electron transfer in composites. Overall, this work demonstrated that it could present a promising strategy for synchronized manufacturing of polymer composites with high thermal conductivity and insulating capability.