期刊
COMPOSITES SCIENCE AND TECHNOLOGY
卷 199, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compscitech.2020.108341
关键词
Functional composites; Electrical properties; Mechanical properties; Differential scanning calorimetry (DSC)
资金
- Natural Science Foundation of Shandong Province [ZR2019MB053, ZR2019QEM009]
- Natural Science Foundation of China [51603098, 21703096, 51873036, 51673039]
- Shenzhen ST Project Grant [JCYJ20150630145302228]
Polydispersed graphene was synthesized by grafting a thin layer of water-soluble amine functionalized polyethylene glycol monomethyl ether (PEG-NH2). PEG-NH2 functionalized graphene (PEG@rGO) was then introduced into epoxy resin via a facile solution mixing method. Fourier-transform infrared (FTIR) spectroscopy, Xray photoelectron spectroscopy (XPS) and thermogravimetric analysis (TGA) verified that PEG was successfully grafted to the surface of graphene. The obtained PEG@rGO showed excellent dispersibility in solvents when compared to pristine graphene. As a core-shell filler, PEG@rGO filled epoxy nanocomposites displayed improved dielectric constant and reduced dielectric loss, exhibiting potential applications in energy storage capacitors. The mechanical strength and final decomposition temperature were also simultaneously increased.
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