Study on Mechanical Properties of Silicone and Titanate Modified Carbon Fiber Resin Matrix Composites
In order to toughen pure epoxy resin-based carbon fiber composites and improve their mechanical characteristic,organosilicon modified carbon fiber reinforced polymer composite laminates were prepared by VARTM molding process.Fourier transform infrared spectrometer,almighty test machine,drop hammer type cable impact test machine and SEM were used to study the functional groups and chemical bonds of the modified epoxy resin and the tensile,bending and impact properties of the composites,and the fracture was analyzed.The results showed that when the addition amount of organosilicon was 2%(mass fraction),and the addition amount of phthalates coupling agent was 0.4%(mass fraction),the mechanical characteristics of the composites were the best,and the tensile strength was 751.55 MPa,which was increased by 111.4%.The flexural strength was 1 023.64 MPa,which was 69.6%higher than that of the unmodified composite.The resilience was 88.51 kJ·m-2,which was 61.3%higher than that of pure epoxy resin carbon fiber composites.
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维普
