| abstract |
A bulletproof composite armor and a preparation method thereof belong to the technical field of composite materials. The preparation method of the bulletproof composite armor includes the following steps: 1) mixing boron carbide, high thermal conductivity nano-carbon fibers, phenolic resin and high-purity water, stirring evenly to obtain composite slurry, and then spraying and granulating to obtain composite raw meal; 2) mixing the steps 1. The prepared composite raw material is filled into a carbon fiber woven bag, then sewed, placed in a mold, and cold-pressed to form a green body, and the green body is then sintered into a composite ceramic plate by high-temperature hot pressing; The composite ceramic plate, the aramid fiber cloth, and the ultra-high molecular weight polyethylene backboard are hot-pressed and compounded in a high-temperature autoclave to obtain bulletproof composite armor. The invention can limit and arrest the ceramic plate in all directions, and increase the high temperature resistance performance of the crack arresting layer. |