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    Please use this identifier to cite or link to this item: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/19538

    Title: Flame retardation improvement of aqueous-based polyurethane with aziridinyl phosphazene curing system
    Authors: Huang, Woei-kae;Yeh, Jen-taut;Chen, Kwei-Ju;Chen, Kan-nan
    Contributors: 淡江大學化學學系
    Keywords: aqueous-based polyurethane;aziridinyl phosphazene;curing;flame retardation;cone calorimetry
    Date: 2001-01-24
    Issue Date: 2009-11-04 16:57:56 (UTC+8)
    Publisher: John Wiley & Sons
    Abstract: Aziridinyl phosphazene (NPAZ) was introduced to aqueous-based polyurethane (PU) as a flame retardant and a postcuring agent, mainly because of the presence of phosphorus compositions, as well as the reactive aziridinyl groups on NPAZ. This dual-function NPAZ was prepared from the substitution reaction of hexachlorocyclotriphosphazene with aziridine. Aqueous-based PU was treated with NPAZ and its curing reaction took place upon drying. The performance properties of this NPAZ cured PU (NPAZ-PU) were improved and better than those of the original PU. The phosphorus composition from NPAZ was evenly distributed on this NPAZ-PU film, which was identified by the phosphorus mapping on the energy dispersion spectrum. The physical and mechanical properties of NPAZ-PU were evaluated by the measurements of the gel content, water uptake, ethanol swelling, and tensile stress. The thermal properties of NPAZ-PU were investigated by thermogravimetric analysis (TGA), TG analyzer-interfaced FTIR, and dynamic mechanical thermal analysis. Furthermore, its combustion behaviors were demonstrated with the data of a cone calorimeter measurement.
    Relation: Journal of Applied Polymer Science 79(4), pp.662-673
    DOI: 10.1002/1097-4628(20010124)79:4<662::AID-APP100>3.0.CO;2-T
    Appears in Collections:[Graduate Institute & Department of Chemical and Materials Engineering] Journal Article

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