Preparation of UV-cured spironaphthooxazine/silica/polyacrylate photochromic hard coatings on plastic substrates

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题名:	Preparation of UV-cured spironaphthooxazine/silica/polyacrylate photochromic hard coatings on plastic substrates
作者:	Chao-Ching Chang;Lin Chen;Liao-Ping Cheng
关键词:	Photochromic;Hard coating;Spironaphthooxazine;Silica nanoparticle;UV-curing;Polyacrylate;Plastic substrate
日期:	2018-03
上传时间:	2018-10-04 12:10:48 (UTC+8)
出版者:	Springer
摘要:	Hard coatings exhibiting photochromic properties were prepared by UV-curing of formulations that incorporated surface-modified silica nanoparticles, hexa-functional curing agent, and organic dye (spironaphthooxazine) on poly(methyl methacrylate) (PMMA) substrates. Spectroscopic studies of the coatings indicated effective photochromic activities over the visible range in response to UV irradiation (365 nm). The color density and bleaching performance were found to depend on the silica and dye contents in the coatings; generally, increasing either quantity could increase the color density and raise the initial bleaching rate, and yet it took a longer time to completely bleach the coatings. Furthermore, the coatings were very hard (8H), attached perfectly (5B) on the substrate, and were much more wear-resistant than pure PMMA against the CS-10 abradant.
關聯:	Journal of Coatings Technology and Research 15 (2), p.325-332
DOI:	10.1007/s11998-017-9983-9
显示于类别:	[化學工程與材料工程學系暨研究所] 期刊論文

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