| 涂料用水性聚氨酯的研制 |
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| 引用本文： | 高景龙,刘艳辉.涂料用水性聚氨酯的研制[J].电镀与精饰,2009,31(5). |
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| 作者姓名： | 高景龙 刘艳辉 |
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| 作者单位： | 沈阳理工大学,材料科学与工程学院,辽宁,沈阳,110168 |
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| 摘 要： | 合成了稳定的聚醚型阴离子聚氨酯乳液.研究了w(二羟甲基丙酸)、n(异氰酸根)与n(羟基)之比、中和剂的种类对乳液和胶膜性能的影响.实验结果表明:乳液的黏度、稳定性随着w(二羟甲基丙酸)的增大而增大,当w(二羟甲基丙酸)为7.5%时乳液和胶膜性能最好;涂膜的拉伸强度随n(异氰酸根)与n(羟基)之比增大而增大,断裂伸长率随n(异氰酸根)与n(羟基)之比增大而减小,适宜的n(异氰酸根)与n(羟基)之比应在7.5～8.0之间;用三乙胺做中和剂得到的乳液外观和稳定性好于氢氧化钠和氨水.
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| 关 键 词： | 水性聚氨脂 涂料 乳液 |
Synthesis of Waterbased Polyurethane Emulsion for Coating |
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| GAO Jing-long,LIU Yan-hui.Synthesis of Waterbased Polyurethane Emulsion for Coating[J].Plating & Finishing,2009,31(5). |
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| Authors: | GAO Jing-long LIU Yan-hui |
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| Affiliation: | College of Material Science and Engineering;Shenyang Ligong University;Shenyang110168;China |
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| Abstract: | Stable waterbased polyurethane emulsion(WPU) was synthesized with toluene diisocyanate,polyether 210,dimethylol propionic acid and triethylamine.Influence of w(dimethylol propionic acid),n(-NCO)/n(-OH) and neutralized reagent on properties of the emulsion and the resulted film was investigated.The results showed that stability and viscosity of WPU increased with the increase w(dimethylol propionic acid);when w(dimethylol propionic acid) was 7.5%,the performance of PUA and the resulted film was perfect;the b... |
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| Keywords: | waterbased polyurethane coating emulsion |
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