In this paper, polyether polyol and MOCA were made into cross -linking agent, and isocyanate prepolymer was prepared by using toluene diisocyanate (TDI) and polyether polyol to prepare two-component solvent-free high-strength polyurethane waterproof coating. In this paper, the effects of the amount of prepolymer, the type of filler and the type of polyether, the ratio of polyether polyol, and the content of isocyanate (-NCO) on the mechanical properties of the coating were analyzed. The waterproof coating prepared by this method has a good effect and can meet the requirements of the waterproof layer of the concrete bridge of the high-speed railway line.
Yunnan Chemical Technology
High speed rail line