Introduction
Using polyurethane as the core material, its unique closed porosity and high resistance to gas diffusion make it have excellent long-term insulation properties, and its thermal insulation performance can last 20-50 years or more. Excellent corrosion resistant polyurethane and the surface material used, it has excellent corrosion resistance and moisture resistance, chemical structure diversification, viscosity easy to adjust, excellent processing technology easy to put into industrial production, easy to use and fast curing advantages, very suitable for the production of large complex components, and easy to assemble later. The rigid polyurethane core material is used as the sandwich structure material, so that the whole structure has the advantages of light weight and strong bearing capacity. Compared with other materials, the polyurethane sandwich plate has better insulation performance.