Fabrication of SiO2 wrapped polystyrene microcapsules by Pickering polymerization for self-lubricating coatings

JOURNAL OF COLLOID AND INTERFACE SCIENCE

卷:528

Article

Li, Haiyan¹  Li, Shuang¹  Li, Feibiao¹  Li, Zhike¹  Wang, Huaiyuan^1,2 

[1] Northeast Petr Univ, Coll Chem & Chem Engn, Prov Key Lab Oil & Gas Chem Technol, Daqing 163318, Peoples R China

[2] Tianjin Univ, Sch Chem Engn & Technol, State Key Lab Chem Engn, Tianjin 300072, Peoples R China

关键词: Pickering polymerization;    polystyrene/SiO2 microcapsules;    Self-lubricating coatings;   

DOI  :  10.1016/j.jcis.2018.05.081

来源: Elsevier

【 摘 要 】

The facile and efficient encapsulation of a lubricant oil in SiO2 wrapped polystyrene microcapsules is accomplished using a Pickering polymerization technique. Triton X-100-IPTS fumed SiO2 nanoparticles are used as emulsifiers for the formation of O/W Pickering emulsions and the stability factor of the Pickering emulsions was investigated. The as-obtained microcapsules are characterized by scanning electron microscope, thermogravimetric analysis, Fourier transform infrared spectra and dynamic laser scattering. These results suggest that the microcapsules display a spherical shape with a core content of similar to 38.3%, an average diameter of 3.3 mu m, a shell thickness is similar to 900 nm and outstanding thermal stability for lubricant oil with a decomposition temperature of 250 degrees C. Moreover, the microcapsules are embedded into an epoxy resin for self-lubricating coatings. On the basis of frictional coefficient measurements and wear testing, the self-lubricating microcapsules-incorporated epoxy coatings on an aluminum plate indicate the excellent dispersibility of the microcapsules in coatings and the favorable antifriction effects. (C) 2018 Elsevier Inc. All rights reserved.

【 授权许可】

Free