| 纳米二氧化硅水溶胶改性UWPU的研究 |
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| 引用本文： | 张胜文,黄威,杜军,张红武,刘晓亚.纳米二氧化硅水溶胶改性UWPU的研究[J].塑料工业,2011,39(12). |
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| 作者姓名： | 张胜文 黄威 杜军 张红武 刘晓亚 |
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| 作者单位： | 江南大学化学与材料工程学院,江苏无锡,214122 |
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| 基金项目： | 国家自然科学基金项目(51003041); 中央高校基本科研业务费专项资金资助(JUSRP11004) |
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| 摘 要： | 通过丙酮法合成光固化水性聚氨酯丙烯酸酯预聚体,用三乙胺中和后在乳化过程中原位引入纳米二氧化硅水溶胶(Wv33、R900、R301)制备二氧化硅/光固化水性聚氨酯(SiO2/UWPU)纳米复合乳液,并进一步通过紫外光固化制备了SiO2/UWPU复合膜。通过电子扫描显微镜(SEM)和电子拉力机研究了不同纳米二氧化硅水溶胶对UWPU/SiO2复合膜的微观结构和力学性能的影响。SEM分析表明表面有机改性的pH值接近中性的硅溶胶(Wv33)较pH为酸性或碱性的硅溶胶在聚氨酯基体中有较好的分散性;应力-应变曲线分析表明Wv33能有效实现对复合膜的增强,即提高了复合膜的储存模量、拉伸强度和邵A硬度。
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| 关 键 词： | 紫外光固化 水性聚氨酯 二氧化硅 膜性能 |
Study on Nanosilica Hydrosol Modifying UWPU |
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| ZHANG Sheng-wen,HUANG Wei,DU Jun,ZHANG Hong-wu,LIU Xiao-ya.Study on Nanosilica Hydrosol Modifying UWPU[J].China Plastics Industry,2011,39(12). |
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| Authors: | ZHANG Sheng-wen HUANG Wei DU Jun ZHANG Hong-wu LIU Xiao-ya |
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| Affiliation: | ZHANG Sheng-wen,HUANG Wei,DU Jun,ZHANG Hong-wu,LIU Xiao-ya(School of Chemical & Material Engineering,Jiangnan University,Wuxi 214122,China) |
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| Abstract: | UV-curable waterborne polyurethane acrylate prepolymer was synthesized by acetone method,with triethylamine,UV-curable waterborne polyurethane(WPU)/silica nanocomposites were prepared using various aqueous silica sol by in situ method.And further through the UV-curing SiO2/UWPU composite membrane was prepared.The effects of different hydrosol nano-SiO2 composite on microstructure and mechanical properties of SiO2/UWPU films were studied by scanning electron microscope(SEM)and electronic tensile machine.SEM ... |
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| Keywords: | UV-curable Waterborne Polyurethane SiO2 Membrane Property |
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