无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ

无机盐工业 ›› 2022, Vol. 54 ›› Issue (5): 79-83.doi: 10.19964/j.issn.1006-4990.2021-0468

• 研究与开发 • 上一篇    下一篇

通过廉价硅源制备二氧化硅微球及其粒径控制

胡中阳1(),司徒粤1(),黄洪1,邹坚涛2   

  1. 1.华南理工大学化学与化工学院,广东 广州 510640
    2.金三江(肇庆)硅材料股份有限公司
  • 收稿日期:2021-08-04 出版日期:2022-05-10 发布日期:2022-05-31
  • 作者简介:胡中阳(1999— ),男,硕士研究生,主要研究二氧化硅微球的合成;E-mail:2387863780@qq.com

Spherical silica synthesized from cheap silicon and its particle size control

HU Zhongyang1(),SITU Yue1(),HUANG Hong1,ZOU Jiantao2   

  1. 1.School of Chemistry and Chemical Engineering,South China University of Technology,Guangzhou 510640,China
    2.Jinsanjiang(Zhaoqing) silicon materials Co. ,Ltd.
  • Received:2021-08-04 Published:2022-05-10 Online:2022-05-31

摘要:

将廉价的硅酸钠作为硅源生产二氧化硅微球有着重要的意义。以硅酸钠为硅源,聚乙二醇(PEG)为结构导向剂,在超声波辅助下,成功合成出高分散的二氧化硅微球。探索了PEG及超声波对产物形貌的影响,讨论了反应温度、pH、PEG相对分子质量与产物粒径的关系。结果表明,PEG能够引导产物成球,超声波可以提高产物的分散性,升高温度及pH会降低产物粒径,增加PEG的相对分子质量会提升产物粒径。当控制温度为40 ℃、pH为3.5、聚乙二醇相对分子质量为2 000时,所得的产品分散性较好,粒径为6.34 μm。

关键词: 二氧化硅微球, 硅酸钠, 聚乙二醇, 超声波, 粒径

Abstract:

It is of great significance to use cheap sodium silicate in the production of silica microspheres.With sodium silicate as silicon source and PEG as structural guiding agent,the highly dispersed silica microspheres were successfully synthesized with the assistance of ultrasonic wave in this research.The effect of PEG and ultrasonic on the morphology of the product was investigated and the relationship between the reaction temperature,pH,PEG molecular weight and the particle size of the product was discussed.The results showed that PEG could guide the product into sphere,ultrasonic could improve the dispersion of the product,increasing the temperature and pH would reduce the particle size of the product,increasing the molecular weight of PEG would increase the particle size of the product.When the temperature was 40 ℃,pH was 3.5,and the molecular weight of PEG was 2 000,the obtained product had good dispersion with particle size of 6.34 μm.

Key words: spherical silica, sodium silicate, PEG, ultrasonic, particle size

中图分类号: