以季戊四醇(PEL)为核,二羟甲基丙酸(DMPA)为单体合成一代超支化聚酯H10,并用丁二酸酐、甲苯二异氰酸酯(TDI)、丙烯酸羟丙酯(HPA)对H10进行改性,合成一系列不同配比的UV固化水性超支化聚氨酯(WHPUD).研究了预聚体中丁二酸酐、TDI、HPA的加入量对WHPUD乳液的粒径、黏度、稳定性、涂膜固化速率、固化膜的耐水性和热稳定性的影响.实验结果表明:WHPUD3.0-1.0乳液的外观、粒径、黏度及稳定性最好,涂膜的UV固化率快,固化膜的耐水性及热稳定性优异,可以作为一种优异的涂料用水性聚氨酯树脂.
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