Study on the properties of POSS/GO composite grafted carbon fiber/epoxy resin composite materials
After layer by layer grafting polyhedral oligosisiloxane(POSS)and graphene oxide(GO)onto the surface of carbon fibers,they were used to reinforce epoxy resin(CF/EP)to prepare composite materials.The effect of POSS and GO composite grafted carbon fibers on the mechanical properties of CF/EP composite materials was studied using scanning electron microscopy,contact angle testing,and X-ray photoelectron spectroscopy.The results indicated that POSS and GO could significantly improve the surface activity and specific surface area of carbon fibers,and improve the wettability,reactivity,and mechanical engagement between resin and carbon fibers,thereby improve the interface performance and mechanical strength of composite materials.Compared with unmodified carbon fiber composites,the interlaminar shear strength(ILSS)and flexural strength of the POSS/GO composite grafted modified carbon fiber com-posites were increased by 98.3％and 95.7％,respectively.
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