以羟乙基双酚A(BPEA)作为水性聚氨酯(WPU)的新型扩链剂,聚环氧丙烷三醇(PPG310)为交联剂,利用透射电镜、热失重分析仪、动态力学分析仪、万能仪、铅笔硬度计对其产物进行了表征.结果表明,所制WPU乳液粒子分散性良好,粒子呈20nm左右球形,聚酯型WPU比聚醚型软硬段相容性高,且储能模量、杨氏模量、铅笔硬度、耐水性能均优于聚醚型WPU.交联后的WPU热稳定性提高,当BPEA质量分数为28.7％,PPG310质量分数为13.6％时,所得涂膜的拉伸强度为49.1MPa,铅笔硬度可达2H,吸水率为6.8％.
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