Preparation of the Lignin-Based Carbon Fibers Reinforced Composite

In order to investigate the practical application effect of self-prepared lignin-based micro/nano carbon fibers as reinforcement, and improve the comprehensive mechanical properties of epoxy resin composites, the lignin-based carbon fibers reinforced composites were prepared with epoxy resin as matrix phase and ultra-short cut lignin-based carbon fibers as nano-dispersed reinforcing phase. With the aspect ratio of 11 and the additive amount of 0.4 wt%, nano-dispersed reinforcing phase dispersed well in the matrix, and the mechanical properties of the composite were the highest. The tensile strength, bending strength, impact strength and hardness of the composite enhanced by 61%, 77%, 35% and 23% respectively compared with those of pure epoxy resin.