淡江大學機構典藏:Item 987654321/77002
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    题名: Performance properties of self-curing aqueous-based PU system with tri-glycidyl phosphate curing agent
    作者: Wang, Shih-Chieh;Chen, Po-Cheng;Hwang, Jing-Zhong;Yeh, Jen-Taut;Huang, Chi-Yuan;Chen, Kan-Nan
    贡献者: 淡江大學化學學系
    关键词: Self-curing;Aqueous-based PU;Glycidyl phosphate;Polymeric micelle
    日期: 2012-03
    上传时间: 2013-03-12 10:59:30 (UTC+8)
    出版者: Dordrecht: Springer Netherlands
    摘要: Amino-terminated and carboxylic acid containing aqueous-based polyurethane (PU) dispersion was prepared by a conventional NCO-terminated PU prepolymer process by using isophorone diisocyanate (IPDI), polypropylene glycol-2000 (PPG-2000) and 2,2′-dimethylolpropanoic acid (DMPA) as the key raw materials. A new curing agent, tri-glycidyl phosphate (POG) was prepared from a substitution reaction of phosphorus oxychloride and glycidol. A single-component self-curable aqueous-based PU system is obtained from an addition of POG into aqueous-base PU dispersion and its curing reaction occurred among POG oxiranes and PU amino groups immediately after hydrophobic POG diffused into PU particles (as polymeric micelles). The cross-linked PU resins were resulted on drying at ambient temperature. Original PU dissolved into THF and ethanol. And its gel content increased to 90.1% and sample loss in ethanol decreased to 9.2% of this self-cured PU system with 5.0 phr POG. The limiting oxygen index (LOI) value is 20 of original PU and its LOI reached to 27 of this same self-cured PU system. The improved mechanical and thermal properties of those self-cured PU resins were evaluated, respectively in this report.
    關聯: Journal of Polymer Research 19(3), 9844(10pages)
    DOI: 10.1007/s10965-012-9844-2
    显示于类别:[化學學系暨研究所] 期刊論文

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