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化工进展  2015 

(长链)脂肪胺聚氧乙烯醚(PAE)型阳离子水性聚氨酯乳液的制备和性能

DOI: 10.16085/j.issn.1000-6613.2015.01.034

Keywords: 脂肪胺聚氧乙烯醚,阳离子水性聚氨酯,聚己二酸新戊二醇酯,甲苯-2,4-二异氰酸酯

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Abstract:

以脂肪胺聚氧乙烯醚(PAE)替换部分聚己二酸新戊二醇酯(POL7112)为软段,甲苯-2,4-二异氰酸酯(TDI)为硬段,合成了系列侧链含长链烷基与主链嵌入聚醚结构(EO)的阳离子聚氨酯乳液。通过红外(FTIR)、粒径、力学性能、热重分析(TGA)、吸水率及接触角等测试对乳液及胶膜进行分析。研究发现,在PU大分子中引入PAE,热稳定性明显提高;当PAE烷基碳链增长,断裂伸长率显著增大,拉伸强度有所减小;随着PAE用量的增加及其分子中EO加合度的增大,乳液粒径变小,稳定性增强,胶膜的亲水性显著提高。

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