Keywords aqueous polyurethane;1;2-dihydroxy propanesulfate;stepwise polymerization reaction;chain-extending reaction;elongation at break;mechanic properties;

• 水性聚氨酯;1;2-二羟基-3-丙磺酸钠;逐步加聚反应;扩链反应;断裂伸长率;力学性能;