| 无溶剂法合成高固含量水性聚氨酯 |
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| 引用本文： | 叶家灿,周海锋,徐文烈,梁晖,赖少媚,卢江.无溶剂法合成高固含量水性聚氨酯[J].中国胶粘剂,2011,20(11). |
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| 作者姓名： | 叶家灿 周海锋 徐文烈 梁晖 赖少媚 卢江 |
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| 作者单位： | 1. 广州化工研究设计院,广东广州,510430
2. 中山大学化学与化学工程学院,广东广州,510275 |
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| 基金项目： | 广东省教育部产学研结合项目(2008B090500054) |
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| 摘 要： | 以混合二异氰酸酯六亚甲基二异氰酸酯(HDI)/异佛尔酮二异氰酸酯(IPDI)]和聚己二酸丁二醇酯(PBA-2000)为基本原料、二羟甲基丁酸(DMBA)为亲水性单体代替目前常用的二羟甲基丙酸(DMPA)]、三乙胺(TEA)为中和剂和乙二胺(EDA)为扩链剂,反应过程中不添加有机溶剂和催化剂,采用先乳化后扩链的预聚体分散法制备了固含量为50%左右的水性聚氨酯(WPU)。采用单因素试验法优选出制备WPU乳液的较佳工艺条件。结果表明:当R=n(-NCO)∶n(-OH)=1.88∶1、w(DMBA)=4.1%和n(EDA)∶n(-NCO)=0.37∶1时,WPU胶膜的强度(拉伸强度为23 MPa)和韧性(断裂伸长率为740%)俱佳。
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| 关 键 词： | 水性聚氨酯 无溶剂法 高固含量 |
Waterborne polyurethane with high solid content synthesized by solvent-free |
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| Ye Jiacan,Zhou Haifeng,Xu Wenlie,Liang Hui,Lai Shaomei,Lu Jiang.Waterborne polyurethane with high solid content synthesized by solvent-free[J].China Adhesives,2011,20(11). |
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| Authors: | Ye Jiacan Zhou Haifeng Xu Wenlie Liang Hui Lai Shaomei Lu Jiang |
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| Affiliation: | Ye Jiacan1,Zhou Haifeng2,Xu Wenlie2,Liang Hui2,Lai Shaomei1,Lu Jiang2 (1.Guangzhou Research & Design Institute of Chemical Industry,Guangzhou 510430,China,2.School of Chemistry and Chemical Engineering,Sun Yat-Sen University,Guangzhou 510275,China) |
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| Abstract: | With mixed diisocyanatehexamethylene diisocyanate(HDI)/isophorone diisocyanate(IPDI)] and polybutylene glycol adipate(PBA-2000) as basic raw materials,dimethylolbutyric acid(DMBA) as a hydrophilic monomerinstead of common dimethylolpropionic acid(DMPA)],triethylamine(TEA) as a neutralizer and ethylenediamine(EDA) as a chain extender,a waterborne polyurethane(WPU) with about 50% solid content and without organic solvent and catalyst was prepared by emulsifing prepolymer before chain extension.The better pr... |
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| Keywords: | waterborne polyurethane(WPU) solvent-free high solid content |
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