Preparation and mechanical properties of tufting C/C composites

Using tufting robot, carbon fiber tufted perform was developed. By changing the parameters of tufting and needle punching processes, tufted C/C composites with different structures and a combination of tufting and needle punching C/C composites were prepared. The effects of parameters such as matrix type, mesh felt and needle punching process on the mechanical properties of tufted C/C composites were studied, and the mechanism for the influence of preform structure on the mechanical properties of C/C composites were explored. The results showed that the addition of mesh layer or resin carbon matrix had a positive effect on improving the bending and shear performance of C/C composites. The strength performance of needle punched and tufted C/C composites was better than that of tufted C/C composites, but the introduction of needle punching technology weakened the "pseudo plastic" deformation of stitched C/C composites.