Failure mode research on CCF300 and T300 composites under tensile strength

Five kinds of domestic carbon fiber (CCF) 300 and T300 carbon fiber composites had been tested for tensile property under the condition of 23°C dry, 23°C wet, 130°C dry and 130°C wet. The failure mode and damage mechanism had been analyzed basing on data, macro character and scanning electron microscope appearance. The result shows that although the tensile property of domestic carbon fiber composites is higher than the T300 carbon fiber composites on the whole, their failure mode is different basically, especially the differences making by the difference of interface property is quit distinct. Therefore, the domestic carbon fiber composites need to improve their interface property to achieve wide application.