| 碳酸镁颗粒表面包覆二氧化硅的研究 |
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| 引用本文： | 吉海宾,祖国胤,姚广春,刘乐天.碳酸镁颗粒表面包覆二氧化硅的研究[J].东北大学学报(自然科学版),2009,30(5):701. |
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| 作者姓名： | 吉海宾 祖国胤 姚广春 刘乐天 |
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| 作者单位： | 东北大学材料与冶金学院,辽宁,沈阳,110004 |
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| 摘 要： | 以正硅酸乙酯为原料,利用溶胶-凝胶法在碳酸镁颗粒表面进行硅酸乙酯水解,生成的硅酸包敷在碳酸镁颗粒表面,然后进行干燥处理,在碳酸镁颗粒表面形成二氧化硅膜;采取正交实验研究了不同的条件对包敷效果的影响,对包敷后的碳酸镁表面进行了XRD分析.结果表明碳酸镁表面包敷了一层二氧化硅,包敷二氧化硅后的碳酸镁分解速度降低,包敷后的碳酸镁可以作为制备泡沫金属的发泡剂.
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| 关 键 词： | 正硅酸乙酯 水解 二氧化硅 碳酸镁 发泡剂 |
On the Silica-Coated Surface of Magnesium Carbonate Particles |
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| JI Hai-bin,ZU Guo-yin,YAO Guang-chun,LIU Le-tian.On the Silica-Coated Surface of Magnesium Carbonate Particles[J].Journal of Northeastern University(Natural Science),2009,30(5):701. |
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| Authors: | JI Hai-bin ZU Guo-yin YAO Guang-chun LIU Le-tian |
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| Institution: | JI Hai-bin,ZU Guo-yin,YAO Guang-chun,LIU Le-tian (School of Materials & Metallurgy,Northeastern University,Shenyang 110004,China.) |
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| Abstract: | With the tetraethylorthosilicate(TEOS) used as starting material which was hydrolyzed on the surfaces of MgCO3 particles by sol-gol method,and the surfaces of MgCO3 particles were coated by the silicic acid thus formed.Then,silica films were formed on the surfaces of MgCO3 particles after heating-drying.Orthogonal tests were performed to investigate the influence of different conditions for TEOS hydrolysis on such a coating,and XRD was done to analyze the coated surfaces of MgCO3 particles.The results showe... |
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| Keywords: | tetraethylorthosilicate(TEOS) hydrolysis silica magnesium carbonate foaming agent |
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