| 改性纳米二氧化硅/水性聚氨酯杂化皮革补伤剂的制备及表征 |
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| 引用本文： | 龚居霞,刘新华,但卫华,李晓琴,但年华.改性纳米二氧化硅/水性聚氨酯杂化皮革补伤剂的制备及表征[J].材料导报,2017,31(14):46-51, 76. |
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| 作者姓名： | 龚居霞 刘新华 但卫华 李晓琴 但年华 |
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| 作者单位： | 四川大学皮革化学与工程教育部重点实验室,成都,610065 |
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| 基金项目： | 四川省科技支撑计划(2016GZ0362) |
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| 摘 要： | 以自制聚酯和异佛尔酮二异氰酸酯(IPDI)为原料,添加不同用量的纳米SiO_2,通过物理共混和原位聚合合成不同的水性聚氨酯乳液,并与进口聚氨酯补伤剂A比较。物理共混与原位聚合合成法制得聚氨酯的力学性能、粘数、吸水率、透光率、附着力均与纳米SiO_2的改性方式与用量有关,与进口补伤剂A相比,所得聚氨酯的透光率不足,但附着力要优于进口补伤剂A。通过比较,添加0.10%吐温-80改性纳米SiO_2和一定的助剂,原位聚合制得的纳米SiO_2/水性聚氨酯材料可作为皮革补伤剂。
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| 关 键 词： | 水性聚氨酯 纳米SiO2 改性 原位聚合 皮革补伤剂 |
Preparation and Evaluation of a Leather-repairing Agent Made of Modified Nanometer-SiO2/Waterborne Polyurethane |
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| GONG Juxi,LIU Xinhu,DAN Weihu,LI Xiaoqin and DAN Nianhua.Preparation and Evaluation of a Leather-repairing Agent Made of Modified Nanometer-SiO2/Waterborne Polyurethane[J].Materials Review,2017,31(14):46-51, 76. |
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| Authors: | GONG Juxi LIU Xinhu DAN Weihu LI Xiaoqin and DAN Nianhua |
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| Affiliation: | The Key Laboratory of Leather Chemistry and Engineering of Ministry of Education, Sichuan University, Chengdu 610065,The Key Laboratory of Leather Chemistry and Engineering of Ministry of Education, Sichuan University, Chengdu 610065,The Key Laboratory of Leather Chemistry and Engineering of Ministry of Education, Sichuan University, Chengdu 610065,The Key Laboratory of Leather Chemistry and Engineering of Ministry of Education, Sichuan University, Chengdu 610065 and The Key Laboratory of Leather Chemistry and Engineering of Ministry of Education, Sichuan University, Chengdu 610065 |
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| Abstract: | The emulsion of different kinds of waterborne polyurethane was synthesized by the methods of physical blending and in-situ polymerization, in which home-made polyester and IPDI in the laboratory were used as raw materials and the addition of different amounts of nano-SiO2 was operated afterwards. The average particle size, mechanical property, viscosity, water absorption ratio, transmittance ratio, adhesion strength of polyurethane were closely associated with the dosage and modification method of nano-SiO2. As a conclusion, the optimal modified method was that the nano-SiO2/waterborne polyurethane emulsion was synthesized using the in-situ polymerization with addition of 0.10% nano-SiO2 modified by Tween-80, and then it was mixed with some auxiliary with appropriate proportion to make the leather-repairing agent. |
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| Keywords: | waterborne polyurethane nano-SiO2 modification in situ polymerization leather-repairing agent |
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