Cross-linkable reinforced composite material composition, cross-linked reinforced composite material and preparation method and application thereof

The invention relates to the technical field of materials, and discloses a cross-linkable reinforced composite material composition, a cross-linked reinforced composite material and a preparation method and application thereof. The composite material composition comprises a component A, a component B and a component C, the weight ratio of the component A to the component B to the component C is 1: (0.7-0.95): (0.01-0.4); the component A contains an alkaline solution, a catalyst and a chain extender, and the content of the alkaline solution is 80 to 99.5 weight percent, the content of the catalyst is 0.4 to 15 weight percent, and the content of the chain extender is 0.1 to 15 weight percent; the component B contains a polyisocyanate prepolymer and a solubilizer, the content of the polyisocyanate prepolymer is 80-99% by weight, and the content of the solubilizer is 1-20% by weight; and the component C contains a silicon-aluminum material. The cross-linked reinforced composite material has excellent bonding stre