Synthesis and Property of Nano-SiO₂/Silicone-Acrylate Emulsion Composite Coatings for Concrete Surface Protection

Abstract:

In this paper, a new type of nano-SiO₂/silicone-acrylate emulsion composite coatings were synthesized through the modification and dispersion of nano-SiO₂ mixed with waterborne resin, dispersant, etc., and successive compounding with silicone-acrylate emulsion. The effects of dispersant concentration, PH value and the addition of waterborne resin on the dispersion stability of the nano-SiO₂ aqueous suspension were explored through infrared spectrum, X-ray diffraction techniques and sedimentation test, as well as the influence of thickener and defoamer agent on the performance of the composite coatings. It was found that the nano-SiO₂/silicone-acrylate emulsion composite coatings had good properties of weather resistance, anti-abrasion, acid and alkaline resistance and water resistance and so on, which could effectively improve the durability of concrete. So they can be widely used in surface protection of hydraulic constructions.

• Periodical: Applied Mechanics and Materials (Volumes 423-426)
• Pages: 1046-1050
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.423-426.1046
• Online since: September 2013
• Authors: Ling Min Liao*, Hui Liang, Liang Chen, Zai Qin Wang, Shan Feng Wang
• Keywords: Coating, Concrete, Durability, Nano-SiO₂, Silicone-Acrylate Emulsion

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