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用N-甲基二乙醇胺作亲水单体合成了具有高频热合性的聚氨酯乳液，该乳液能够满足富康轿车门护板的生产要求。
N-methyldiethanolamine was used as a hydrophilic monomer to synthesize a polyurethane emulsion with high frequency heat-sealing property, which can meet the production requirements of Beverly car door guard.