| 回收超细硅粉制备高浓度硅溶胶的研究 |
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| 引用本文： | 许可萤,严云,胡志华.回收超细硅粉制备高浓度硅溶胶的研究[J].非金属矿,2011,34(4). |
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| 作者姓名： | 许可萤 严云 胡志华 |
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| 作者单位： | 1. 西南科技大学四川省非金属复合与功能材料重点实验室一省部共建国家重点实验室培育基地,四川绵阳,621010
2. 西南科技大学四川省非金属复合与功能材料重点实验室一省部共建国家重点实验室培育基地,四川绵阳621010;西南科技大学先进建筑材料四川省重点实验室,四川绵阳621010 |
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| 基金项目： | 国家科技攻关计划“高性能水泥绿色制造工艺和装备(2006BAF02A24)”; 校重点项目“特种防护工程用超高性能砼制备技术研究(07XJGZB02)” |
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| 摘 要： | 以有机硅单体生产中回收的单质硅粉(约500～2000目)为原料,采取分步加入碱液法和调节控制溶液的pH值等新措施,利用超细硅粉制得了浓度在30%以上(未浓缩)的二氧化硅溶胶,并对其进行了性能检测。对在新方法下获得性能较好硅溶胶的原因及反应体系pH值下降等问题进行了分析。研究结果对拓宽单质硅水解法制备硅溶胶原料的来源、资源回收利用具有积极意义。
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| 关 键 词： | 超细硅粉 碱液 pH值 高浓度硅溶胶 |
Study on High Concentration of Silica Sol with Recycling Ultra-fine Silica Powder |
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| Xu Keying,Yah Yun,Hu Zhihua.Study on High Concentration of Silica Sol with Recycling Ultra-fine Silica Powder[J].Non-metallic Mines,2011,34(4). |
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| Authors: | Xu Keying Yah Yun Hu Zhihua |
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| Affiliation: | Xu Keying1 Yan Yun1,2 Hu Zhihua1,2(1 State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials,Southwest University of Science and Technology,Mianyang,Sichuan 621010,2 Key Laboratory for Advanced Building Materials of Sichuan Province,Sichuan 621010) |
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| Abstract: | A new manufacturing process was been investigated of silica sol with concentration above 30%(Not concentrate),using Ultra-fine silica fume as raw material in this paper.The experimental results indicated that high concentration silica sol could easily be obtained by adding alkali liquid for several steps and controlling the pH value of reaction liquid.The performances of silica sol had been tested in accordance with the national standard.The mechanism of formation of high concentration silica sol and the ca... |
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| Keywords: | ultra-fine silica powder alkali liquid pH value high concentration silica sol? |
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