The grafted-graphene oxide/glass fiber/epoxy resin (grafted-GO/GF/EP) and dispersed-graphene oxide/glass fiber/epoxy resin (dispersed-GO/GF/EP) composites were successfully prepared by grafting graphene oxide (GO) on glass fiber (GF) with coupling agent and random dispersion of GO. A scanning electron microscope (SEM) was employed to characterize the micro structure. The heat transfer RVE models of the grafted-GO/GF/EP and dispersed-GO/GF/EP composites were established respectively. Based on RVE heat transfer simulation model, the heat transfer characteristics of the grafted-GO/GF/EP and dispersed-GO/GF/EP composites were analyzed. The results show that under the condition of 0.1 vol% GO content and heated for 60 s, the thermal conductivities of dispersed-GO/GF/EP and grafted-GO/GF/EP composites are increased by 3.48% and 82.37% respectively. The dispersion of GO increases the heat transfer paths in EP and forms a connected GO-GO heat transfer network. However, with the increasing of GO content, the agglomeration of GO becomes more obvious. The dispersion and interfacial bonding of the GO/GF/EP composites were improved by coupling agent, which effectively reduced the interfacial thermal resistance and significantly improved the thermal conductivity of the composites.

通过接枝氧化石墨烯(GO)成功制备了接枝氧化石墨烯/玻璃纤维/环氧树脂(grafted-GO/GF/EP)和分散氧化石墨烯/玻璃纤维/环氧树脂(dispersed-GO/GF/EP)复合材料。 ) 在带有偶联剂和 GO 随机分散的玻璃纤维 (GF) 上。使用扫描电子显微镜 (SEM) 来表征微观结构。分别建立了接枝-GO/GF/EP和分散-GO/GF/EP复合材料的传热RVE模型。基于RVE传热模拟模型，分析了接枝-GO/GF/EP和分散-GO/GF/EP复合材料的传热特性。结果表明，在GO含量为0.1 vol%的条件下，加热60 s，分散-GO/GF/EP和接枝-GO/GF/EP复合材料的热导率分别提高了3.48%和82.37%。GO 的分散增加了 EP 中的传热路径并形成了一个连接的 GO-GO 传热网络。然而，随着GO含量的增加，GO的团聚变得更加明显。偶联剂改善了GO/GF/EP复合材料的分散性和界面结合，有效降低了界面热阻，显着提高了复合材料的导热系数。