| 引用本文: | 钱斯文,王建方,吴文健,等.SiO2 溶胶不同掺杂方式对含氟聚丙烯酸酯/SiO2 杂化涂层性能的影响.[J].国防科技大学学报,2008,30(2):22-27,71.[点击复制] |
| QIAN Siwen,WANG Jianfang,WU Wenjian,et al.Effects of Different Silica Sol Doping Methods on the Properties of Fluoro-acrylate Polymer/SiO2 Hybrid Coatings[J].Journal of National University of Defense Technology,2008,30(2):22-27,71[点击复制] |
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| SiO2 溶胶不同掺杂方式对含氟聚丙烯酸酯/SiO2 杂化涂层性能的影响 |
| 钱斯文, 王建方, 吴文健, 刘长利 |
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(国防科技大学 航天与材料工程学院，湖南 长沙 410073)
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| 摘要: |
| 用酸催化溶胶－凝胶法制得SiO2 溶胶，分别采用共混法和原位聚合法制备含氟聚丙烯酸酯/SiO2 纳米杂化涂层。利用红外光谱、扫描电镜等表征了杂化涂层的结构、形态及SiO2 相的分散性；研究了SiO2 含量、分布和界面状况等与杂化涂层的表面性能和力学性能的关联与影响。结果表明，SiO2 在两种方法制备的杂化涂层中均以Si-O网络的形式存在，原位聚合法中SiO2 相的分散性优于共混法；含氟聚丙烯酸酯涂层中引入SiO2 相后，涂层性能明显提高，共混法的疏水性优于原位聚合法；二者的力学性能随SiO2 相含量变化的趋势相同，原位聚合法略优于共混法。 |
| 关键词: 含氟聚丙烯酸酯 溶胶－凝胶 SiO2 网络 纳米杂化材料 性能 |
| DOI： |
| 投稿日期：2007-11-20 |
| 基金项目:国家部委资助项目 |
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| Effects of Different Silica Sol Doping Methods on the Properties of Fluoro-acrylate Polymer/SiO2 Hybrid Coatings |
| QIAN Siwen, WANG Jianfang, WU Wenjian, LIU Changli |
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(College of Aerospace and Materials Engineering, National Univ. of Defense Technology, Changsha 410073, China)
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| Abstract: |
| Silica sols were synthesized by an acid-catalyzed sol-gel process and fluoro-acrylate polymer/SiO2 hybrid materials were prepared by the in-situ polymerization and blending method. The structure, morphologies of the hybrid coating and the dispersion of SiO2 in coatings were characterized by FT-IR and SEM. The effects of content, distribution and interfacial conditions of inorganic disperse phase on the surface and mechanical properties of hybrid coatings were investigated. It was found that in the hybrid coatings, SiO2 subsisted in networks, and covalent linked with organic components. The dispersion of SiO2 in coats prepared by in-situ polymerization method was better than that by blending method. The water contact angles were enhanced with SiO2 content for the coatings by the two methods, while in the same SiO2content, the properties for the coatings by blending method were slightly better than that by in-situ polymerization method. The hardness and adhesion of the hybrid coatings had the same trend with the increase of SiO2content, in-situ polymerization method was better than that by blending method. |
| Keywords: fluoro-acrylate polymer sol-gel process SiO2 network hybrids property |
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