rv fiberglass panels

Easy Molding Solid Structure Rigid PU Foam Core Choice for FRP Sandwich Structures Introduction In the process of the coordinated development of polymer material and composite material technologies, polyurethane foam has become a key material in many fields due to its unique preparation process and adjustable performance advantages. As a polymer formed by mixing, reacting, and foaming two-component liquids (polyol and isocyanate) under the action of catalysts, foaming agents,