| abstract |
A polyurethane (PU) composite material and a preparation method thereof. The method of the present invention first provides a mold, and then forms a skin layer containing a polyester resin in a cavity of the mold, and then forms a foam coated with the implant in the mold having the skin layer. The surface of the PU composite of the present invention is coated with a skin layer formed on the surface of the foam, wherein the foaming system is foamed PU, the hardness of the skin layer is 3H to 5H, and the hardness of the skin layer is greater than the foam. Since the PU composite material of the present invention is coated with a skin layer, pores or cracks on the surface of the product can be avoided, the subsequent processing is reduced, the production speed is increased, and the product strength is also high. |