Studies on Surface Morphology of Water-Based Silicone Rubber/Silica Sol Hybrid Coatings by Atomic Force Microscopy

Abstract:

Hybrid coatings had been prepared with water-based silicone rubber, silica sol and curing agents. This material has strong adhesion and coating properties to wood, glass, metal, ceramic, brick etc. The hybrid coatings were analyzed by atomic force microscopy (AFM). The results show that different curing agents play a key role in surface morphology of hybrid coating. Methyltris-(methylethylketoxime)silane（MOS）cured hybrid coating looks smooth and flat. When the concentration of curing agent was 3.0 wt%, the surface roughness of 20 wt% silica sol hybrid coating was only 47.2 nm. At the same conditions, 3-triethoxysilylpropylamine (APTES) cured hybrid coating displays cluster structure and the surface roughness of hybrid coating could reach 368 nm in height. With the increase of the concentration of APTES, the cluster structure becomes more obvious and the surface roughness also increases gradually. When the concentration of silica sol is increased from 15 to 30 wt%, with 3.0 wt% APTES as curing agent, the surface roughness of the hybrid coating increases from 312 to 511 nm, respectively.

• Periodical: Advanced Materials Research (Volumes 557-559)
• Pages: 1928-1932
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.557-559.1928
• Online since: July 2012
• Authors: Li Wu, Wei Xing Deng, Jin Wen Peng, Xiao Dan Lin, Wen Shi Ma
• Keywords: Atomic Force Microscopy (AFM), Hybrid Coating, Silica Sol, Surface Morphology, Water-Based Silicone Rubber

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