The aim of this research was to develop the UV-cured epoxy/carbon composites. The rheological properties of the uncured neat epoxy and epoxy composite with graphite, graphene, and multi-walled carbon nanotube (MWCNT) were evaluated to observe the macroscopic flow behavior and the microstructure by shear force. The results showed that epoxy/carbon composites at high filler content exhibited shear-thinning behavior with a high yield stress value and epoxy/MWCNT at 30 phr showed this characteristic obviously. The fractured surface and particle dispersion in the epoxy matrix were evaluated by scanning electron microscopy and transmission electron microscopy, respectively. Epoxy/carbon composites at high filler content displayed rough fracture surface with particle agglomeration, thus the electrical conductivity increased. The result showed that the epoxy/MWCNT composites had high potential to use as a conductive adhesive with a 3D printing process due to high electrical conductivity with high viscosity that could be formed easily during processing.

这项研究的目的是开发紫外线固化的环氧/碳复合材料。评价未固化的纯净环氧和具有石墨，石墨烯和多壁碳纳米管（MWCNT）的环氧复合材料的流变性能，以观察剪切力的宏观流动行为和微观结构。结果表明，高填充量的环氧/碳复合材料表现出剪切稀化行为，屈服应力值较高，而环氧/ MWCNT在30 phr时表现出明显的这一特性。通过扫描电子显微镜和透射电子显微镜分别评估环氧基质中的断裂表面和颗粒分散体。填料含量高的环氧/碳复合材料的颗粒表面呈现粗糙的团聚状态，电导率增加。