ZHANG Han¹,LI Rui¹,DING Hao¹,FENG Zengjun²,SUN Sijia¹,WANG Xuan¹

(1.School of Materials Science and Technology,China University of Geosciences,Beijing 100083,China; 2.Jiangsu Qunxin Powder Technology Co.,Ltd.,Yangzhou 225006,China)

Abstract：Calcium carbonate (CaCO₃) has the problem that it is not easily compatible with the matrix (due to its somooth surface and prominent edges) and had poor acid and aging resistance.The research progress on the preparation methods and applications of CaCO₃@SiO₂ composite particles was outlined,including the principles and characteristics of mechanochemistry,microwave precipitation,sodium silicate-acid precipitation and Stöber method,as well as the influence of each parameter in the preparation process.The strucural and performance features of CaCO₃@SiO₂ composite particles,and the characteristics and advantages of CaCO₃ coated with SiO₂ were summarized.SiO₂ can not only change the surface morphological characteristics of CaCO₃,such as roughing the surface and passivating the angles,but also give CaCO₃ other physical and chemical properties,such as increasing the specific surface area,improving surface activity,and giving CaCO₃ functional properties such as acid and aging resistance.It is proposed that CaCO₃@SiO₂ particles are new materials made of an ordered composite of 

CaCO₃ and SiO₂,which can be expanded for applications in traditional materials and new materials for the environment and energy such as fillers,superhydrophobic coatings,thermochemical energy storage materials and flam-retardant foam metals.The respective characteristics of the two should be fully utilized to maximize the advantages and increase the application value based on the characteristics of CaCO₃@SiO₂ composite partieles.

Keywords：calcium carbonate;silica;composite particles;acid resistance;aging resistance

Get Citation: ZHANG H,LI R,DING H,et al.Research progress on preparation and application of CaCO₃@SiO₂ composite particies[J].China Powder Science and Technology,2023,29(3)：21-34.

Received： 2022-10-26,Revised：2022-12-02,Online：2023-04-11 09：44。

Funding Project：国家自然科学基金项目,编号：51474194;国家自然科学基金资助项目,编号：51144011。

First Author：张涵(1995—),女(满族),博士研究生,研究方向为矿物复合材料和非金属矿加工。E-mail：zhanghan0050@163.com。

Corresponding Author：丁浩(1964—),男,教授,博士,博士生导师,研究方向为矿物复合材料和非金属矿加工。E-mail：dinghao@cugb.edu.cn。