Journal
COMPOSITES COMMUNICATIONS
Volume 22, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.coco.2020.100480
Keywords
GO-Modified epoxy resin; Continuous carbon fiber-reinforced composite; Cryogenic mechanical properties; Hot-press molding
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Funding
- National Natural Science Foundation of China [U1837204, 11802307]
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In this work, graphene oxide (GO) with a content in a range of 0.0-0.5 wt% was introduced to modify epoxy resin. The room temperature (RT) and cryogenic temperature (77 K) mechanical properties were systematically studied for the carbon fiber/GO-modified epoxy composites prepared by hot-press molding process. The results show that a good dispersion of GO in epoxy resin leads to an enhanced carbon fiber-epoxy matrix interfacial adhesion. It is observed that the cryogenic mechanical properties of the CF/epoxy composites are obviously enhanced by introducing GO. The optimal GO content is found to be 0.2 wt% for effectively improving the cryogenic flexural and interlaminar shear strength of carbon fiber reinforced epoxy composites. In addition, it is exhibited that the mechanical properties at 77 K of CFRP composites are higher than those at RT. Consequently, the modification of epoxy resin by introducing GO is a promising means for achieving high cryogenic mechanical performance CFRP composites.
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