| 纳米 SiO2的改性及其对水性聚氨酯树脂复合涂层性能的影响 |
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| 引用本文： | 汤晓东,张振海,徐丽萍,杨兴亮,张千峰.纳米 SiO2的改性及其对水性聚氨酯树脂复合涂层性能的影响[J].表面技术,2013,42(4):12-16. |
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| 作者姓名： | 汤晓东 张振海 徐丽萍 杨兴亮 张千峰 |
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| 作者单位： | 安徽工业大学分子工程与应用化学研究所;马鞍山钢铁股份有限公司技术中心 |
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| 基金项目： | 科技部863计划新材料研究专题(2009AA03Z529) |
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| 摘 要： | 在乙醇水溶液中,用硅烷偶联剂KH560对纳米SiO2进行表面改性处理,通过测定粒径,探讨了纳米SiO2含量、乙醇水溶液配比以及改性剂含量对分散性的影响。将改性后的纳米SiO2分散液、水性聚氨酯树脂及无机组分等复配成无铬钝化液,在热镀锌板上制备钝化膜,通过电化学Tafel极化曲线、交流阻抗以及中性盐雾试验对比纳米SiO2改性聚氨酯复合钝化膜和未改性聚氨酯复合钝化膜的耐蚀性,结果表明,与后者相比,前者的耐腐蚀性能有了较大的提升。
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| 关 键 词： | 纳米SiO2改性 粒径 水性聚氨酯树脂 电化学 耐蚀性 |
| 收稿时间： | 2013/2/26 0:00:00 |
| 修稿时间： | 2013/3/28 0:00:00 |
Modification of Nano-SiO2 and Its Effect on the Properties of Waterborne Polyurethane Resin Coating |
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| TANG Xiao-dong,ZHANG Zhen-hai,XU Li-ping,YANG Xing-liang and ZHANG Qian-feng.Modification of Nano-SiO2 and Its Effect on the Properties of Waterborne Polyurethane Resin Coating[J].Surface Technology,2013,42(4):12-16. |
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| Authors: | TANG Xiao-dong ZHANG Zhen-hai XU Li-ping YANG Xing-liang and ZHANG Qian-feng |
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| Affiliation: | 1(1.Institute of Molecular Engineering and Applied Chemistry,Anhui University of Technology,Ma′anshan 243002,China;2.Technique Center,Ma’anshan Iron & Steel Co.,Ltd.,Ma′anshan 243000,China) |
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| Abstract: | In aqueous ethanol solution, the surface of nano-SiO2 was modified by silane coupling agent KH560 . And the particle sizes were measured. The effects of nano-SiO2 content, alcohol percentages and the modification agents on dispersity were discussed. The chromium-free passivation solution was made from the modified nano-SiO2 dispersions, water polyurethane resin and inorganic constituent compound, and it may be coated on the hot galvanized sheet . Corrosion resistances of nano-SiO2 modified polyurethane composite passivation film and unmodified polyurethane composite passivation film were characterized by the electrochemical Tafel polarization curves, AC impedances ( EIS) and the neutral salt spray tests. The results may show that compared with the latter the former corrosion resistance have been greatly improved. |
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| Keywords: | nano-SiO2 modification particles size water polyurethane resin electrochemical corrosion resistance |
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