Tianjin University of Technology and Jiangsu Deqing New Materials Co., Ltd. have reached an agreement to transform the patent of "A composite material forming core mold and preparation method" into achievements. The relevant information of the patent is as follows.

Patent Type: Invention Authorization

Application (Patent) No.: CN201711438938.1

The invention relates to a composite material forming core mold and a preparation method, belonging to the field of hollow composite material forming core molds. The core mold includes at least one air inlet nozzle, and the thickness direction profile includes a water-soluble material layer or a low-temperature molten material layer, an air bag, and a composite elastic material in sequence from the inside out. The water-soluble material used in the core mold is polyvinyl alcohol or polyethylene glycol, the material of the air bag is nylon, and the composite elastic material is continuous fiber-reinforced silicone rubber, continuous fiber-reinforced polyurethane resin, or continuous fiber-reinforced emulsion rubber. The fiber direction of the continuous fibers in the composite elastic material used in this core mold is consistent with the force direction when the core mold is extracted from the composite material product in the later stage. The outer layer of the core mold of the present invention adopts composite elastic material, and at the same time, the composite elastic material is bonded with the air bag in the middle layer to form a composite structure again, making the core mold less prone to damage during use and having a longer service life.