Mechano-Chemical Preparation and Application of Mulberry-Like CaCo3/SiO2 Composite Particles in Superhydrophobic Films

被引：8

作者：

Wen, Xiufang ^{[1
]}

Liu, Ying ^{[1
]}

Xu, Zijie ^{[1
]}

Yang, Jinxin ^{[1
]}

Pi, Pihui ^{[1
]}

Cai, Zhiqi ^{[1
]}

Cheng, Jiang ^{[1
]}

Yang, Zhuoru ^{[1
]}

机构：

[1] S China Univ Technol, Sch Chem & Chem Engn, Guangzhou, Guangdong, Peoples R China

来源：

SOFT MATERIALS | 2012年 / 10卷 / 04期

基金：

中国国家自然科学基金;

关键词：

Coating; Mechano-chemical method; Nano-micro composite particle; Superhydrophobic surface; Smart materials; SILICA COLLOIDAL NANOCOMPOSITES; AL2O3 COATING FILMS; HIGH TRANSPARENCY; SURFACES; HYDROPHOBICITY;

D O I：

10.1080/1539445X.2010.528118

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This study focuses on preparation of mulberry-like CaCO3/SiO2 composite particles with a mechanochemical method and their application in superhydrophobic films. Silicon dioxide nanoparticles were adhered to calcium carbonate microparticles to form mulberry-like composite particles through vigorous stirring, which prevented agglomeration of silicon dioxide nanoparticles and maintained their nanocharacteristics. Then, hexamethyldisilazane was employed for hydrophobic modification of the mulberry-like CaCO3/SiO2 composite particles. The effect of CaCO3/SiO2 mass ratios, stirring speed, reaction temperature, and amount of modifying reagent on morphology and lipophilicity of composite particles was studied. Moreover, the superhydrophobic films with excellent film properties were obtained by through combination of mulberry-like CaCO3/SiO2 hydrophobic composite particles and RTV silicon rubber. The water contact angle and sliding angle of the superhydrophobic surface were measured to be 170 +/- 2.5 degrees and 4 degrees, respectively. This approach proves to be ideal for substantial improvement of the self-cleaning property of RTV silicon rubber anti-pollution flashover coating.

引用

页码：435 / 448

页数：14