[Int. J. Heat Mass Transfer]Functionalized graphite nanoplatelets/epoxy resin nanocomposites with high thermal conductivity
作者：Junwei Gu*, Xutong Yang, Zhaoyuan Lv, Nan Li, Chaobo Liang and Qiuyu Zhang
關(guān)鍵字：Thermally conductive nanocomposites, Graphite nanoplatelets (GNPs), Bisphenol-A epoxy resin (E-51), Surface functionalization
論文來(lái)源：期刊
具體來(lái)源：International Journal of Heat and Mass Transfer
發(fā)表時(shí)間：2016年
Graphite nanoplatelets (GNPs) are performed to fabricate GNPs/bisphenol-A epoxy resin (GNPs/E-51) nanocomposites with high thermal conductivity via casting method. And the “two-step” method of methanesulfonic acid/γ-glycidoxypropyltrimethoxysilane (MSA/KH-560) is introduced to functionalize the surface of GNPs (fGNPs). The KH-560 molecules have been successfully grafted onto the surface of GNPs. The thermal conductivities of the fGNPs/E-51 nanocomposites are increased with the increasing addition of fGNPs, and the corresponding thermally conductive coefficient ofthe fGNPs/E-51 nanocomposites is improved to 1.698W/mK with 30wt% fGNPs, 8 times higher than that of original E-51matrix. The flexural strength and impact strength of the fGNPs/E-51 nanocomposites are optimal with 0.5 wt% fGNPs. The thermal stabilities of the fGNPs/E-51 nanocomposites are also increased with the increasing addition of fGNPs. For a given GNPs loading, the surface functionalization of GNPs by MSA/KH-560 exhibits a positive effect on the thermal conductivities and mechanical properties of the nanocomposites.