文章摘要
李果,许戈文.含硫扩链剂改性水性聚氨酯的制备及其性能[J].精细化工,2019,36(11):
含硫扩链剂改性水性聚氨酯的制备及其性能
Preparation and properties of WPU modified with sulfur-containing chain extender
投稿时间:2019-04-03  修订日期:2019-05-05
DOI:
中文关键词: 巯基-烯“点击”反应  含硫扩链剂  水性聚氨酯
英文关键词: thiol-ene "click" reaction  sulfur-containing chain extender  waterborne polyurethane
基金项目:2018安徽省高校自然科学研究项目(重大项目)(塑料印刷用水性聚氨酯油墨的制备和性能研究)KJ2018ZD004
作者单位E-mail
李果 安徽大学化学化工学院 1369559329@qq.com 
许戈文 安徽大学化学化工学院 gwxu@ahu.edu.cn 
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中文摘要:
      以2-巯基乙醇(2-ME)和丙烯酸羟乙酯(HEA)为原料,通过巯基-烯“点击”反应合成了含硫二元醇ME-HEA。并以其为扩链剂,与聚氧化丙烯二醇(PPG)、异佛尔酮二异氰酸酯(IPDI)等合成系列含硫水性聚氨酯(SWPU)。采用纳米粒度仪、红外光谱、电子拉力机等对乳液的粒径、胶膜的热性能、力学性能以及耐水性进行了分析。结果表明:随着ME-HEA含量的增加,SWPU胶膜的耐热性能和力学性能有明显的提升。当ME-HEA含量为4.3%时,乳液粒径为41.7nm,胶膜拉伸强度和断裂伸长率分别为34.3MPa和911.2%,在120℃热氧降解处理后的拉伸强度为处理前的拉伸强度的90.09%,有较好的耐热氧降解性能。
英文摘要:
      Sulfur-containing diol ME-HEA was synthesized from 2-mercaptoethanol (2-ME) and hydroxyethyl acrylate (HEA) by a thiol-ene click reaction. Further, it was used as a chain extender to prepare a series of sulfur-containing waterborne polyurethane (SWPU) emulsions using polyoxypropylene diol (PPG) and isophoronediisocyanate (IPDI) as raw materials. The particle size of the emulsion, the thermal properties, mechanical properties and water resistance of the films were tested by nanometer particle size analyzer, infrared spectrum and electronic tensile machine. The results show that with the increase of ME-HEA content, the heat resistance and mechanical properties of SWPU film obviously improve. When the content of ME-HEA was 4.3%, the particle size of the emulsion was 41.7 nm, the tensile strength and elongation at break of the film were 34.3 MPa and 911.2%, respectively. After the film was treated by thermal oxygen degradation at 120℃, its tensile strength was 90.09% of that before treatment, indicating that the film had a good thermal decomposition resistance.
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