基于亚胺键和二硫键的自愈合水性聚氨酯的制备及性能
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安徽大学化学化工学院

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2020年度安徽省重大科技成果工程化研发项目


Preparation and characterization of self-healing waterborne polyurethane based on imine and disulfide bonds
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School of Chemistry and Chemical Engineering, Anhui University

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    摘要:

    以水杨醛和2,2-二氨基二苯二硫醚反应,合成了含有芳香二硫键的席夫碱,将合成的席夫碱和聚四氢呋喃醚二醇、异佛尔酮二异氰酸酯、2,2-二羟甲基丁酸和1,4-丁二醇反应,制备了席夫碱自愈合水性聚氨酯。通过1HNMR、FTIR、对合成的席夫碱和聚氨酯进行表征,结果表明合成了有芳香席夫碱和芳香二硫键的自愈合水性聚氨酯;通过划痕测试和愈合测试对聚氨酯自愈合能力进行了表征,结果表明,SWPU-2的划痕愈合效果和自愈率都是最佳,在室温下愈合12h后,SWPU-2划痕消失,室温下愈合24h后,聚氨酯的自愈率可以达到95.8%

    Abstract:

    The schiff base containing aromatic disulfide bond was successfully synthesized by the reaction of salicylic aldehyde and 2, 2-diaminodiphenyl disulfide ether. The schiff base was reacted with polytetrahydrofuranediol, isophorone diisocyanate,2, 2-dihydroxymethyl butyric acid and 1, 4-butanediol. The characterization of the schiff base and polyurethane film was performed by 1HNMR and FTIR. The results showed that the self-healing waterborne polyurethane with aromatic Schiff base and aromatic disulfide bond was successfully synthesized. The self-healing ability of polyurethane was characterized by scratch test and healing test. The results showed that swPU-2 had the best scratch healing effect and self-healing rate. After 12h healing at room temperature, swPU-2 film's scratch disappeared, and after 24h healing at room temperature, the self-healing rate of polyurethane film could reach 95.8%

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袁野,杨建军.基于亚胺键和二硫键的自愈合水性聚氨酯的制备及性能[J].精细化工,2022,39(12):

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  • 收稿日期:2022-04-22
  • 最后修改日期:2022-06-18
  • 录用日期:2022-06-20
  • 在线发布日期: 2022-10-25
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