期刊
JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷 528, 期 -, 页码 92-99出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2018.05.081
关键词
Pickering polymerization; polystyrene/SiO2 microcapsules; Self-lubricating coatings
资金
- National Young Top Talents Plan of China [2013042]
- National Science Foundation of China [21676052, 21606042]
- Natural Science Foundation of Heilongjiang Province [E2015034]
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.
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