Continuous fiber reinforced polyurethane composite material and preparation method thereof

The invention relates to the technical field of composite materials, and discloses a continuous fiber reinforced polyurethane composite material and a preparation method thereof. Uniformly mixing polyether polyol, a chain extender, a catalyst, a foam stabilizer and a defoaming agent to obtain a resin stock solution, adding the shear thickening adhesive A, and uniformly mixing to obtain a compound resin stock solution; coating the surface of the secondary modified UHMWPE fabric with a shear thickening adhesive B, and baking to obtain a composite UHMWPE fabric; taking the surfaces, not coated with the shear thickening adhesive B, of two pieces of composite UHMWPE fabric to face the inner side, placing the two pieces of composite UHMWPE fabric on the top surface and the bottom surface of a mold respectively, continuously and statically mixing the compound resin stock solution and isocyanate, injecting the mixture into the mold, and heating, curing and continuously forming to obtain the polyurethane composite mat