| IPDI/HDI型水性聚氨酯分散体的合成及性能研究 |
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| 引用本文： | 黎兵,杨伟平,李俊梅,许戈文. IPDI/HDI型水性聚氨酯分散体的合成及性能研究[J]. 中国胶粘剂, 2009, 18(9) |
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| 作者姓名： | 黎兵 杨伟平 李俊梅 许戈文 |
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| 作者单位： | 安徽大学化学化工学院,安徽省绿色高分子材料重点实验室,安徽,合肥,230039 |
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| 摘 要： | 以脂肪族异氰酸酯[异佛尔酮二异氰酸酯(IPDI)、六次甲基二异氰酸酯(HDI)]、聚醚(N-220)为主要原料,通过丙酮法合成了水性聚氨酯(WPU)分散体。探讨了n(IPDI中-NCO):n(HDI中-NCO)比例、后扩链剂用量和交联度等对WPU胶膜力学性能和耐溶剂(水和乙醇)性能的影响。结果表明:随着n(IPDI中-NCO):n(HDI中-NCO)比例的增加,WPU胶膜的拉伸强度提高,断裂伸长率、耐水性和耐乙醇性均下降;当n(IPDI中-NCO):n(HDI中-NCO)=0.25:1时,WPU胶膜的吸水率只有6%;随着后扩链剂用量或交联度的增加,WPU胶膜的拉伸强度提高、断裂伸长率下降。
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| 关 键 词： | 脂肪族异氰酸酯 异佛尔酮二异氰酸酯 六次甲基二异氰酸酯 水性聚氨酯 |
Study on synthesis and performance of WPU dispersoid based on IPDI/HDI |
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| LI Bing,YANG Wei-ping,LI Jun-mei,XU Ge-wen. Study on synthesis and performance of WPU dispersoid based on IPDI/HDI[J]. China Adhesives, 2009, 18(9) |
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| Authors: | LI Bing YANG Wei-ping LI Jun-mei XU Ge-wen |
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| Affiliation: | LI Bing,YANG Wei-ping,LI Jun-mei,XU Ge-wen (School of Chemistry and Chemical Engineering & The Key Laboratory of Environment-Friendly Polymer Materials of Anhui Province,Anhui University,Hefei 230039,China) |
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| Abstract: | With aliphatic isocyanates[namely isophorone diisocyanate(IPDI),hexamethylene diisocyanate(HDI)] and polyether(N-220) as main raw materials,a waterborne polyurethane(WPU) dispersoid was synthesized by acetone method.The influences of molar ratio of -NCO in IPDI to -NCO in HDI,post chain extender content and crosslinking degree and other factors on mechanics performance and solvent resistance(namely water resistance and ethanol resistance) of WPU film were discussed.The results showed that the tensile streng... |
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| Keywords: | aliphatic isocyanates IPDI HDI WPU |
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