Solvent-free polyurethane (solvent-free PU) has broad application prospects and standardization has become the mainstream trend of industry development.

Solvent-free polyurethane, also known as solvent-free PU and solvent-free rigid foam polyurethane, refers to rigid foam polyurethane that does not contain components that can volatilize into the atmosphere. Compared with traditional polyurethane, solvent-free polyurethane has the advantages of strong chemical resistance, large load-bearing capacity, good corrosion resistance, UV resistance, and green environmental protection. It is…