Preparation andproperty of HKT800 carbon fiber/AG80 epoxy resin composite

The surface topography,elements,functional groups of HKT800 carbon fiber were characterized,the recipe of AG80 epoxy resin was optimized,then the mechanical and interface performance of HKT800 carbon fiber / AG80 epoxy resin composite were analyzed. The results showed that: the ratio of O / C and N / C in surface elements reached 25. 2%and 4. 5%,the ratio of active carbon atoms was 0. 91,so the surface activity of HKT800 carbon fiber was higher. The epoxy resin could be cured at 150 ℃ when the mass ratio of AG80,DDS,BF3·MEA was 100∶ 30∶ 3. The tensile,flexural and compression strength of HKT800 carbon fiber / AG80 epoxy resin composite were 2 682,1 874 and 1 639 MPa,interlayer shear strength was 110 MPa.