Preparation of transparent nanocomposites from UV- and thermo-curable epoxyacrylate and graphene oxide for the application of corrosion protection coatings

doi:10.1002/pi.5891

淡江大學機構典藏 > 工學院 > 化學工程與材料工程學系暨研究所 > 期刊論文 > Item 987654321/118253

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题名:	Preparation of transparent nanocomposites from UV- and thermo-curable epoxyacrylate and graphene oxide for the application of corrosion protection coatings
作者:	Syu, Cian-Fan;Lin, Yen-Ting;Yeh, Yih-Chang;Don, Trong-Ming
关键词:	epoxyacrylate;graphene oxide;corrosion protection hardness;transparency
日期:	2019-07-17
上传时间:	2020-03-12 12:10:41 (UTC+8)
出版者:	Wiley
摘要:	In this study, we report UV‐ and thermo‐curable epoxyacrylate/graphene oxide (EA/GO) nanocomposites that present good transparency, excellent pencil hardness and promising improvement in corrosion protection. A dual‐curable EA oligomer with one terminal epoxide and one double bond at the other end was synthesized by reaction of diglycidyl ether of bisphenol‐A and acrylic acid. After mixing EA and GO with the curing agents and reactive diluent followed by UV cure and thermo‐cure, the resulting EA/GO films on a glass slide with GO loading up to 3 phr exhibited over 86% light transmittance. Furthermore, the pencil hardness was enhanced from 3H for EA to 6H for the EA/GO composite at 2 phr GO loading. The corrosion protection of the EA/GO coatings was evaluated by a potentiodynamic polarization technique and electrochemical impedance spectra. The corrosion potential (Ecorr) of the EA/GO‐coated steel increased with increasing GO loading. Meanwhile, Nyquist and Bode plots indicated that the higher the GO content in the EA/GO coating was, the higher was the coating resistance and also the charge transfer resistance after immersion in salt solution. All these results proved that the GO had positive effects on enhancement of the corrosion resistance. The improved corrosion protection by the EA/GO coatings was mainly due to the enhanced hydrophobicity, the deviation of electron transfer and the increased tortuosity of the diffusion path. The improved corrosion protection and hardness together with the useful dual‐curability make the EA/GO nanocomposite a competitive candidate for corrosion protection coatings. © 2019 Society of Chemical Industry
關聯:	Polymer International 68(10), p.1804-1816
DOI:	10.1002/pi.5891
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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