Abstract
Using 3-aminopropyltriethoxysilane (KH550), γ-glycidyloxypropyltrimethoxysilane (KH560) and silica with different particle sizes as raw materials, the grafting reaction through layer-by-layer assembly strawberry-like silica particles with multi-scale effects were prepared, and their structures were characterized by infrared spectroscopy (FT-IR), hydrogen nuclear magnetic resonance (NMR), X-ray diffraction (XRD), transmission electron microscopy (TEM) and other testing methods. Then it was physically blended with laboratory-made water-based epoxy resin WEP, and the coating with superhydrophobic properties was prepared by the low surface energy modification of methyltrimethoxysilane (MTMS). Differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) to characterize the blending stability and heat resistance of the coating, and to analyze its morphological characteristics with scanning electron microscopy (SEM), and to analyze its abrasion resistance by measuring the change in the surface contact angle of the coating under certain conditions, Chemical resistance. The results showed that the prepared strawberry-like silica particles reached the expected structure, and formed Pickering emulsion similar to oil-in-water after blending with WEP, which was a stable emulsion system of solid particles. At the same time, due to the introduction of strawberry-like silica particles and the low surface energy modification of MTMS, the modified WEP has superhydrophobic properties, as well as excellent abrasion resistance, corrosion resistance and self-cleaning effect.
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This project is financially supported by the Guangdong Provincial Department of Natural Resources Guangdong Marine Economic Development (Six Marine Industries) Special Funds Project (Guangdong Natural Resources 2021-33).
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Su, H., Yang, J. Design and preparation of multiple silica particles and study on superhydrophobic modified epoxy resin. J Polym Res 30, 238 (2023). https://doi.org/10.1007/s10965-023-03617-6
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DOI: https://doi.org/10.1007/s10965-023-03617-6