Abstract
UV-curable matting composites were prepared by micron silica matting agent, polyether diol (PPG), isophorone diisocyanate (IPDI), and 2-hydroxyethyl methacrylate (HEMA) via the in situ polymerization method. The structure, surface morphology, and thermal stability of the composites were characterized by FTIR, SEM, and TGA, respectively. As the main resin in the UV-curable coating, the effects of particle sizes of silica on the gloss, abrasion resistance, adhesion, and hydrophilic properties of coatings were measured. The results show that the agglomeration phenomenon of the modified silica in the composite coating was obviously improved. The smaller the particle size, the lower the gloss of coatings with the same content. The adhesion strength and abrasion resistance of the composites were superior to those of pure UV-curing coatings without silica. The greater the particle sizes of the added modified silica, the stronger the hydrophilicity of the composite.
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Acknowledgments
This work is funded by Youth Top Talent Project of Shanxi, China (No. 20180509), Key R & D Projects of Shanxi Province, China (No. 201903D121112) and Department of Science and Technology of Shanxi Province, China (No. 201801D221112).
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Yang, Z., Wu, J., Ma, G. et al. Effect of the particle sizes of silica on the properties of UV-curing matting coatings. J Coat Technol Res 18, 183–192 (2021). https://doi.org/10.1007/s11998-020-00395-4
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DOI: https://doi.org/10.1007/s11998-020-00395-4