Epoxy resin for carbon fiber reinforced composite material and application thereof

The invention relates to epoxy resin for a carbon fiber reinforced composite material and an application of the epoxy resin. The epoxy resin is prepared from the following raw materials: an anhydridecuring agent and an epoxy component in a weight ratio of (20-60): 100. In the epoxy component, E51 accounts for 10wt% to 20wt%, and the tetra-polyfunctional epoxy compound accounts for 80wt% to 90wt%.The anhydride curing agent is an internal or external addition product of cyclopentadiene and maleic anhydride. The epoxy resin not only has high glass-transition temperature, but also has high wettability to carbon fibers, has high rigidity after being cured, and is very suitable for preparing a high-temperature-resistant and high-strength carbon fiber reinforced composite material, and the prepared carbon fiber reinforced composite material has a good application prospect in the field of automobile part manufacturing. 本申请涉及一种碳纤维增强复合材料用环氧树脂及其应用，其原料包括重量比为20-60：100的酸酐类固化剂和环氧组分；其中，环氧组分中E51占10wt％-20wt％，四多官能团环氧化合物占80wt％-9