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Obviously improved electromagnetic interference shielding performances for epoxy composites via constructing honeycomb structural reduced graphene oxide
作者:Ping Song, Chaobo Liang, Lei Wang, Hua Qiu, Hongbo Gu*, Jie Kong and Junwei Gu*
關鍵字:聚合物基復合材料,電磁屏蔽,石墨烯,環氧樹脂
論文來源:期刊
具體來源:Composites Science and Technology
發表時間:2019年

Reduced graphene oxide with honeycomb structure (rGH) was successfully constructed and prepared by freezedrying & thermal annealing using aluminium oxide (Al2O3) honeycomb as a template. The obtained rGH frameworks were then immersed into epoxy resins to fabricate the corresponding rGH/epoxy composites. The incorporated rGH could obviously enhance the electromagnetic interference shielding effectiveness (EMI SE) and electrical conductivity of the epoxy composites. When the mass fraction of rGH was 1.2 wt%, the obtained rGH/ epoxy composites had the maximum EMI SE of 38.0 dB (at X-band) and electrical conductivity of 40.2 S/m, about 6.3 and 1340 times of the rGO/epoxy composites (6.0 dB and 0.03 S/m) with the same loading of rGO, respectively. Meantime, the introduction of rGH could be beneficial to improving the thermal stabilities of the rGH/epoxy composites.

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