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    题名: Flame retardation behaviors of UV-curable phosphorus-containing PU coating system
    作者: Wang, Shih-Chieh;Chen, Po-Chen;Hwang, Jing-Zhong;Huang, Chi-Yuan;Yeh, Jen-Taut;Chen, Kan-Nan
    贡献者: 淡江大學化學學系
    关键词: flame retardation;nano-silica;phosphonic acid;PU;UV-curing
    日期: 2013-11
    上传时间: 2013-10-19 14:29:07 (UTC+8)
    摘要: A UV-cured polyurethane (PU)/nano-silica composite with a flame-retarded coating system was obtained from the composition of nano-silica containing a UV-curable PU oligomer and a UV-reactive phosphonic acid [ethylene glycol methacrylate phosphate (EGMP)]. The UV-curable PU oligomer was prepared by an addition reaction of 2-hydroxyethyl methacrylate (2-HEMA) with an NCO-terminated PU pre-polymer; this was then mixed with a methanol dispersion of nano-silica. The UV-reactive phosphonic acid (EGMP) was prepared by a reaction of 2-HEMA with phosphorus pentoxide (P2O5). The curing reaction of the PU/nano-silica composite coating system was carried out by UV irradiation with the aid of a photoinitiator (2-hydroxy-2-methylpropiophenone). The thermal properties of these PU/nano-silica composite coatings were investigated by the measurements of dynamic mechanical analysis (DMA) and thermogravimetric analysis (TGA), respectively. A phosphorus (phosphonic acid) containing ingredient, EGMP in PU coating system that provides good adhesion to steel surface and flame retardation. Their physical properties (contact angle, hardness) and flame flammability [limiting oxygen index (LOI), UL-94 test] with various phosphorus contents (different dosages of EGMP) were also evaluated in this report.
    關聯: Journal of Polymer Engineering 33(8), pp.749-756
    DOI: 10.1515/polyeng-2013-0136
    显示于类别:[化學學系暨研究所] 期刊論文





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