Adjustable micro-structure, higher-level mechanical behavior and conductivities of preformed graphene architecture/epoxy composites via RTM route. (March 2017)

• Record Type: Journal Article
• Authors: Teng, Kunyue; Ni, Ya; Wang, Wei; Wang, Haibo; Xu, Zhiwei; Chen, Lei; Kuang, Liyun; Ma, Meijun; Fu, Hongjun; Li, Jing
• Is Part Of: Composites. Volume 94(2017)
• Page Start: 178
• Page End: 188
• Publication Date: 2017-03
• Subjects: Preformed graphene architecture/epoxy composites -- Resin transfer molding -- Adjustable micro-structure -- Mechanical behavior; Composite materials -- Periodicals; Manufacturing processes -- Periodicals; Composite materials; Manufacturing processes; Periodicals; 620.11805
• DOI: 10.1016/j.compositesa.2016.12.002
• Languages: English
• ISSNs: 1359-835X

Abstract

Abstract: With respect to the requirement for good dispersibility and ordered arrangement for graphene in three dimensional graphene architecture (3DGA) and the performance for epoxy-based composites, 3DGA was synthesized in various pore diameters and RTM was introduced into the fabrication of 3DGA/epoxy composites compared to the graphene/composites in direct-mixing method. Mechanical modulus and strength of 3DGA/epoxy composites increased by one or two times compared with pure epoxy. Relative to composites in direct-mixing method, the increase in compressive and flexural strength of 3DGA/epoxy composites was at least twofold to tenfold. On account of the decreased pore size for 3DGA, the compressive and flexural strength was in noticeable improvement of 41% and 78%, respectively. With distinct network connecting structure of 3DGA, over 5 orders of magnitude enhancement took place in electrical conductivities of thermal reduced 3DGA/epoxy composites. It was conducive to prepare high performance composites by adjusting the internal structure of graphene/epoxy composites.