| 环氧基四配位硅改性水性聚氨酯及性能分析 |
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| 引用本文： | 宋建华,郭敬威,丘赟,郭仕恒,徐敏.环氧基四配位硅改性水性聚氨酯及性能分析[J].涂料工业,2007,37(3):1-3,11. |
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| 作者姓名： | 宋建华 郭敬威 丘赟 郭仕恒 徐敏 |
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| 作者单位： | 广州大学化学化工学院化学系,广州,510006 |
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| 基金项目： | 广东省广州市教委科研项目 |
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| 摘 要： | 通过二步法制备了环氧基四配位硅（ETCS）改性水性聚氨酯，研究了n（-NCO）：n（-OH）、二羟甲基丙酸（DMPA）的含量、ETCS含量对水性聚氨酯乳液及成膜性能的影响，确定了n（-NCO）：n（-0H）在1．5-1．7之间，DMPA质量分数在5％左右，ETCS质量分数小于3％时制得的乳液外观呈蓝光半透明，粒子半径小，稳定性高；涂膜耐热性高、吸水率低。实验证明ETCS作为扩链剂比乙二胺作扩链剂时合成的水性聚氨酯各方面性能均有提高。
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| 关 键 词： | 水性聚氨酯 环氧基四配位硅 扩链剂 乙二胺 |
| 文章编号： | 0253-4312（2007）03-0001-04 |
| 修稿时间： | 2007-01-22 |
Synthesis and Performance of Waterborne Polyurethane Modified by Epoxy-Tetra-Coordinated Silicon |
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| Song Jianhua,Guo Jingwei,Qiu Yun,Guo Shiheng,Xu Min.Synthesis and Performance of Waterborne Polyurethane Modified by Epoxy-Tetra-Coordinated Silicon[J].Paint & Coatings Industry,2007,37(3):1-3,11. |
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| Authors: | Song Jianhua Guo Jingwei Qiu Yun Guo Shiheng Xu Min |
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| Affiliation: | Chemistry and Chemical Engineering College, Guangzhou University, Guangzhou 510006, China |
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| Abstract: | The waterborne polyurethane modified by through a two - step process. The influences of the ratio epoxy- tetra- coordinated silicon was prepared of NCO/OH, the content of DMPA,the content of ETCS on the performance of waterborne polyurethane and films were studied. The emulsion was blue shade and semi -transparent with high stability, small particle size, good heat resistance and lower water absorption when the ratio of NCO/OH was between 1.5 - 1.7 ,the content of DMPA was about 5% ,the content of the epoxy -tetra -coordinated silicon was less than 3%. The experiment results show that all the performances of the waterborne polyurethane were improved when using the epoxy - tetra - coordinated silicon as chain extender instead of the ethylene diamine. |
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| Keywords: | waterborne polyurethane epoxy - tetra - coordinated silicon chain extender ethylene diamine |
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