以异佛尔酮二异氰酸酯(IPDI)、聚酯多元醇XCP-244和丙烯酸异冰片酯(IBOA)为主要原料,采用共聚改性的方法制备了IBOA改性水性聚氨酯复合乳液(WP UA).研究了改性反应的工艺条件,并对复合乳液及胶膜的性能进行了分析讨论.通过研究配方中的R值、DMPA含量、DEG含量、中和度以及反应时间对复合乳液的黏度、稳定性以及胶膜的吸水率、拉伸强度的影响,确定了较适宜的改性工艺条件.最终确定的IBOA改性水性聚氨酯的工艺条件为:R值1.80、DMPA含量5％、DEG含量0.75％、中和度100％、反应时间5h.并通过傅里叶红外光谱、差示扫描量热仪、拉伸测试仪等仪器对改性后的WPUA复合乳液及胶膜进行表征和分析.结果表明,改性后的水性聚氨酯胶膜的耐热性、拉伸强度均有一定提高.
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