期刊
MATERIALS LETTERS
卷 246, 期 -, 页码 149-152出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2019.03.071
关键词
Graphene; Functionalization; Epoxy; Dielectric constant; Nanocomposites
资金
- Natural Scientific Foundation of China [51603098, 21703096]
- Natural Science Foundation of Shandong Province [ZR201808160323]
Aminated polyethylene glycol (PEG-NH2) functionalized graphene nanosheets (PEG-rG) were successfully introduced into epoxy resin as a core-shell nanostructure to prepare the epoxy based dielectric composite. The overall mechanical and dielectric performances of the PEG-rG/epoxy nanocomposites were greatly improved in comparison with its counterparts employing with untreated graphene. The dielectric constant of PEG-rG/epoxy 1.5 wt% nanocomposites reached 84.3 at 100 Hz, two times higher than that of rG/epoxy 1.5 wt% system. What's more, the dielectric loss is effectively reduced to a very low level (tan delta = 0.21). (C) 2019 Elsevier B.V. All rights reserved.
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