| 超细SiO2水分散体系制备的影响因素及表征手段 |
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| 引用本文： | 张京玲,毋伟,郭锴,陈建峰,刘安平. 超细SiO2水分散体系制备的影响因素及表征手段[J]. 金属矿山, 2003, 0(9): 25-28 |
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| 作者姓名： | 张京玲 毋伟 郭锴 陈建峰 刘安平 |
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| 作者单位： | 1. 北京化工大学教育部超重力工程研究中心
2. 上海梅山集团(南京)矿业有限公司 |
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| 基金项目： | 该项目为教育部科学技术研究重大项目(重大0202),天津市重点项目. |
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| 摘 要： | 研究了制备超细Si02水分散体系的主要影响因素，对比研究了粘度法作为超细si02水分散体系稳定性表征手段的可靠性，分析了其影响机理。认为在超细Si02水分散体系制备时除应综合考虑pH值、温度、分散剂种类和用量等主要影响因素外，还要考虑凝胶化的影响，在不影响工艺和应用的前提下，尽量选择产生凝胶化时间较长的pH值范围。用粘度法间接表征超细Si02水分散体系的分散稳定性，仅在一定范围内具有适用性。
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| 关 键 词： | 超细Si02水分散体系 表征手段 粘度法 二氧化硅 凝胶化 超细粉体 |
| 修稿时间： | 2003-04-25 |
Factors Influencing the Preparation of Ultrafine SiO2 Aqueous Dispersion System and Characterization Means |
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| Zhang Jinling Wu Wei Guo Kai Chen Jianfeng. Factors Influencing the Preparation of Ultrafine SiO2 Aqueous Dispersion System and Characterization Means[J]. Metal Mine, 2003, 0(9): 25-28 |
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| Authors: | Zhang Jinling Wu Wei Guo Kai Chen Jianfeng |
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| Affiliation: | Zhang Jinling Wu Wei Guo Kai Chen Jianfeng(Beijing University of Chemical Technology Research Center of theMinistry of Education for High Gravity Engineering and Technology) Liu Anping(Shanghai Meishan Group(Nanjing) Mining Co. Ltd) |
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| Abstract: | Main factors influencing the preparation of superfine SiO 2 aqueous dispersion system were studied. The reliability of using viscosity method as the stability characterization means of superfine SiO 2 aqueous dispersion system was studied in a comparative way and its influence mechanism analysed. It was considered that in the preparation of superfine SiO 2 acqueous dispersion system, the effect of geletination should be considered besides the comprehensive consideration of the main factors such as pH value, temperature, dispersant type and dosage. Under the prerequisite of not influencing the technological process and application, the pH range allowing long geletination time should be selected. It is only applicable in certain range to use viscosity method to characterize indirectly the dispersion stability of superfine SiO 2 aqueous dispersion system. |
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| Keywords: | Superfine SiO 2 Acqueous dispersion system Viscosity method |
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