中华医学超声杂志

应用化学 ›› 1998, Vol. 0 ›› Issue (3): 79-81.

• 研究论文 • 上一篇    下一篇

超细二氧化硅粉体的制备

李中军1, 刘长让1, 王雪清2, 赵秦生3   

  1. 1. 郑州大学化学化工学院 郑州450052;
    2. 郑州大学物理系 郑州450052;
    3. 中南工业大学 长沙
  • 收稿日期:1997-09-23 修回日期:1998-03-02 出版日期:1998-06-10 发布日期:1998-06-10

Preparation of Ultrafine Silica Particles

Li Zhongjun1, Liu Changrang1, Wang Xueqing2, Zhao Qinsheng3   

  1. 1. Chemical and Engineering College, Zhengzhou University, Zhengzhou 450052;
    2. Department of Physics, Zhengzhou University, Zhengzhou 450052;
    3. Central South University of Technology, Changsha
  • Received:1997-09-23 Revised:1998-03-02 Published:1998-06-10 Online:1998-06-10

PDF

452

被引次数

5

摘要： 溶胶-凝胶工艺是液相法制备超细SiO2粉体的重要方法之一.采用该工艺用硅醇盐[1]或 四氯化硅[2]为原料制备的超细SiO2粉体成本较高.文献[3]以碱性硅溶胶为原料,调节pH值使胶体颗粒聚集,制得了粒径分别为9.5、16和27 nm的SiO2凝胶粉体.本研究以水玻璃为原料,乙酸乙酯为潜伏酸试剂,通过乙酸乙酯水解反应诱发硅酸盐聚合形成溶胶和凝胶制备超细SiO2粉体.并研究了水玻璃在乙酸乙酯作用下形成溶胶-凝胶的过程.

关键词: 溶胶-凝胶法, SiO2超细粉, 粉体制备

Abstract: Ultrafine silica particles ranging from 10 to 20 nm were prepared by sol-gel method and n-butanol azeotropic distillation from water glass using ethyl acetate as a latene acid reagent. The gelling process of the water glass in the presence of ethyl acetate was studied.

Key words: ultralfine silica particle, preparation, sol-gel method

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