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    题名: Aqueous-based polyurethane with dual-functional curing agent
    作者: Shao, Chih-Hao;Wang, Ta-Zen;Chen, Guan-Nan;Chen, Kwei-Ju;Yeh, Jen-Taut;Chen, Kan-nan
    贡献者: 淡江大學化學學系
    关键词: Aqueous-based PU;Reactive flame retardant;Thermal stability;Flame inhibition;Cross-linking
    日期: 2000-03-01
    上传时间: 2009-11-04 16:52:57 (UTC+8)
    出版者: Springer
    摘要: Aqueous-based polyurethane (PU) with a carboxyl pendent group was prepared from a conventional PU prepolymer process. Its carboxyl group served as the ionic center for stabilizing the aqueous PU dispersion and as the curing site for post-curing reaction. A curing agent was synthesized from the substitution reaction of phosphorus oxychloride or phenylphosphonic dichloride by aziridine. Each compound consisted of two aziridinyl groups and the phosphorus composition. Its aziridinyl group reacted with a PU carboxyl group and its phosphorus content was introduced to this PU curing system simultaneously. Those compounds served as both curing agent and flame retardant for the PU curing system. The physical and mechanical properties of the resulting PU were improved corresponding to the curing dosage. The thermal properties and the flame inhibition behaviors of those post-cured PUs were evaluated by measurements using thermogravimetric analysis, dynamic mechanical thermal analysis, a limiting oxygen index, and a cone calorimeter.
    關聯: Journal of Polymer Research 7(1), pp.41-49
    DOI: 10.1007/s10965-006-0102-3
    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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