High-hardness epoxy modified polyurethane composite material and preparation method thereof

The invention relates to a high-hardness epoxy modified polyurethane composite material, which is prepared by adding a component A and a component B into a vacuumable sealed container and carrying out a mixed reaction by using a prepolymer method, wherein the component A is a mixture of a terminal isocyanate prepolymer and an epoxy resin, and the component B is a mixture of a chain extender and a catalyst. The preparation method comprises: weighing 130-140 parts of the component A and 2.4-15.2 parts of the component B, respectively pre-heating, adding the pre-heated components A and B to a vacuumable sealed container, mixing, carrying out vacuum deaeration while stirring, taking out after the gas bubbles are completely removed, pouring into a corresponding mold, carrying out low temperature curing, demolding, and carrying out heating vulcanization to prepare the high-hardness epoxy modified polyurethane composite material. According to the present invention, the product has advantages of high toughness, prolo