The factors influencingparticle size of the dispersions were investigated by DSL and TEM. The contents ofurethane and allophanate linkages in the polymer were analyzed by 1H-NMR.

• 研究了影响水性聚氨酯分散体粒径尺寸的因素,用1H-NMR表征了合成水性聚氨酯中氨基甲酸酯基和脲基甲酸酯基的含量。