▎ 摘　　要

NOVELTY - The composite material that is provided with a first porous ceramic preform layer, a second porous ceramic preform layer, a third porous ceramic preform layer, a fourth porous ceramic preform layer and a fifth porous ceramic preform layer arranged in sequence structure layer. The porosity of the first porous ceramic preform layer, the porosity of the second porous ceramic preform layer, the porosity of the third porous ceramic preform layer, the porosity of the fourth porous ceramic preform layer, and the porosity of the fifth porous ceramic preform layer is equal. The raw materials of the ceramic reinforcing particles include titanium dioxide and graphene, the titanium dioxide is powdered titanium dioxide, and the graphene is powdered graphene, and the particle size of the titanium dioxide in the raw materials used for each layer is configured to decrease as the number of layers increase. USE - Composite material for lift safety protecting system of lift used as main vertical traffic transportation device for transportation of goods in high-rise building. ADVANTAGE - The composite material is configured to utilize the specific layered structure and porosity of the ceramic preform layer, thus imparting abrasion resistance and impact resistance to the material, providing the wedge block with excellent friction wear resistance and utilizing the copper reinforcing material that has good performance in the high temperature lift operation environment, and meet the performance requirement of the wedge safety. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) a method for preparing the composite material for lift safety; and (2) a copper reinforcing material for the wedge of the lift safety. DESCRIPTION OF DRAWING(S) - The drawing shows the schematic view of the copper reinforced material First copper reinforced porous ceramic layer (1) Second copper reinforced porous ceramic layer (2) Third copper reinforced porous ceramic layer (3) Fourth copper reinforced porous ceramic layer (4) Fifth copper reinforced porous ceramic layer (5)