▎ 摘　　要

NOVELTY - Composite material comprises A component and B component at the mass ratio of 100:20-30. The A component comprises 100 pts. wt. bisphenol A type epoxy resin, 15-25 pts. wt. toughening epoxy resin, 10-20 pts. wt. wetting agent, 40-60 pts. wt. active diluent, 2-5 pts. wt. hydrophobic modified nano filler, 0-2 pts. wt. coupling agent and 1-3 pts. wt. antifoaming agent. The B component comprises 20-30 pts. wt. latent curing agent, 3-6 pts. wt. accelerator and 1-3 pts. wt. wetting dispersant. USE - The composite material is useful for fiber winding. ADVANTAGE - The composite material: has high toughness, impact resistance and interface bonding force; can adjust the viscosity, operating time, and heat resistance; produces filament winding with excellent comprehensive properties; and preparation method and construction method are simple, safe and efficient, and can meet the needs of industrial production. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) Preparing composite material, comprising (i) mixing bisphenol A type epoxy resin, active diluent, coupling agent and hydrophobic modified nano filler uniformly, heating to 30-40degrees Celsius, adding toughening epoxy resin, soaking auxiliary agent and antifoaming agent and stirring for 10-20 minutes to obtain A component; (ii) mixing the latent curing agent, accelerator and wetting dispersant uniformly according to the weight ratio to obtain the component B; and (iii) mixing the component A and component B uniformly according to the weight ratio; and (2) Constructing composite material, comprising mixing the A component and the B component of the composite material uniformly according to the weight ratio, carrying out vacuum defoaming treatment, heating to 40-50degrees Celsius, placing in the glue tank, soaking in the aramid fiber and winding to obtain the product, placing the product in an oven, heating to 90-100degrees Celsius at a heating rate of 8-10degrees Celsius/min, maintaining for 60-80 minutes and heating to 150-160degrees Celsius at a heating rate of 3-5degrees Celsius/min, and maintaining for 100-150 minutes.