| 引用本文: | 李利君,皮丕辉,王炼石,文秀芳,程江,杨卓如.改进的溶胶/凝胶法制备包覆型铝颜料[J].材料科学与工艺,2010,18(4):464-468.DOI:10.11951/j.issn.1005-0299.20100405. |
| LI Li-jun,PI Pi-hui,WANG Lian-shi,WEN Xiu-fang,CHENG Jiang,YANG Zhuo-ru.Aluminum pigments encapsulated by modified sol/gel method[J].Materials Science and Technology,2010,18(4):464-468.DOI:10.11951/j.issn.1005-0299.20100405. |
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| 摘要: |
| 为提高铝颜料的耐酸及耐碱性,同时保持铝颜料特有的金属光泽,采用改进的溶胶/凝胶法对铝颜料进行了表面包覆,结合FTIR、SEM、TEM、XPS等方法对包覆型铝颜料的微观形貌及包覆层成分进行了分析,并与传统溶胶/凝胶法制备的SiO2包覆的铝颜料的性能进行了对比.结果表明,采用改进的溶胶/凝胶法可以在铝颜料表面形成致密的网状包覆层,从而使其在pH=1的酸性介质及pH=11的碱性介质中的腐蚀保护因子分别达到99.8%和99.9%;与未包覆的铝颜料相比,采用改进的溶胶/凝胶法制备的包覆型铝颜料的光泽度仅下降3.2%,较好地保持了其本身的金属光泽. |
| 关键词: 铝颜料 包覆 溶胶/凝胶法 乙烯基三乙氧基硅烷 光泽度 |
| DOI：10.11951/j.issn.1005-0299.20100405 |
| 分类号:TB383.1 |
| 基金项目:广东省自然科学基金资助项目(07006528) |
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| Aluminum pigments encapsulated by modified sol/gel method |
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LI Li-jun1,2,3, PI Pi-hui1, WANG Lian-shi2, WEN Xiu-fang1, CHENG Jiang1, YANG Zhuo-ru1
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1.School of Chemistry and Chemical Engineering,South China University of Technology,Guangzhou 510640,China;2.Sichuan Fire Research Institute of Ministry of Public Safety,Dujiangyan 611830,China;3.College of Material Science and Engineering,South China University of Technology,Guangzhou 510640,China
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| Abstract: |
| Aluminum pigments were encapsulated by modified sol/gel method in order to improve their stability in acid and alkaline media.FTIR,SEM,EM and XPS were adopted to characterize the morphology and components of the encapsulation.Performances of aluminum pigments prepared by modified sol/gel method were compared with those prepared by traditional sol/gel method.It is found that compact netlike layers are formed on the surface of aluminum pigments encapsulated by modified sol/gel method,resulting that corrosion protection factors of aluminum pigments reach 99.8% in acid medium of pH=1 and 99.9% in alkaline medium of pH=11.Typically,gloss of aluminum pigments prepared by modified sol/gel method is only decreased by 3.2% compared with that of unencapsulated aluminum pigments,indicating that the gloss of aluminum pigments can be well kept with modified sol/gel method. |
| Key words: aluminum pigments encapsulation sol/gel method vinyltriethoxysilane gloss |
