| Ca~(2+)含量对水性聚氨酯乳液及其胶膜性能的影响 |
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| 引用本文： | 蒋吉磊,苏秀霞,惠媛媛. Ca~(2+)含量对水性聚氨酯乳液及其胶膜性能的影响[J]. 中国胶粘剂, 2011, 20(10) |
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| 作者姓名： | 蒋吉磊 苏秀霞 惠媛媛 |
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| 作者单位： | 陕西科技大学,教育部轻化工助剂化学与技术重点实验室,陕西西安710021 |
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| 基金项目： | 陕西省教育厅专项科研计划项目(11JK0827) |
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| 摘 要： | 以甲苯二异氰酸酯(TDI)、聚醚(N-210)、二羟甲基丙酸(DMPA)和一缩二乙二醇(DEG)等为主要原料,合成了自乳化型WPU(水性聚氨酯)乳液;然后以氢氧化钙作为交联改性剂,通过Ca2+与-COOH之间形成的螯合交联,制成Ca2+改性WPU乳液。结果表明:当n(Ca2+)∶n(-COOH)=0.4∶1时,改性WPU乳液具有较好的储存稳定性和综合性能,其胶膜的热性能、耐水性、剥离强度(4.5 N/mm)、拉伸强度(14.5 MPa)和断裂伸长率(454.5%)等均相对较高。
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| 关 键 词： | 水性聚氨酯 乳液 胶粘剂 交联 |
Influences of Ca~(2+) contents on WPU emulsion and film properties |
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| Jiang Jilei,Su Xiuxia,Hui Yuanyuan. Influences of Ca~(2+) contents on WPU emulsion and film properties[J]. China Adhesives, 2011, 20(10) |
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| Authors: | Jiang Jilei Su Xiuxia Hui Yuanyuan |
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| Affiliation: | Jiang Jilei,Su Xiuxia,Hui Yuanyuan(Key Laboratory of Auxiliary Chemistry & Technology for Chemical Industry,Ministry of Education,Shaanxi University of Science & Technology,Xi'an 710021,China) |
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| Abstract: | With toluene diisocyanate(TDI),polyether(N-210),dimethylol propionic acid(DMPA) and diethylene glycol(DEG) as main raw materials,a self-emulsifying type WPU(waterborne polyurethane) emulsion was synthesized.Then with Ca(OH)2 as cross linker and modifier,a WPU emulsion modified by Ca2+ was prepared by the chelate crosslinking between Ca2+ and-COOH.The results showed that the modified WPU emulsion had better storage stability and combination property because its film's thermal properties,water resistance,peel... |
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| Keywords: | waterborne polyurethane(WPU) emulsion adhesive crosslinking |
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