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    Please use this identifier to cite or link to this item: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/32761

    Title: 環氮丙烷化學於水性聚氨酯架橋改質等應用研究
    Other Titles: The azetidine chemistry for aqueous-based polyurethane and other applications
    Authors: 王世杰;Wang, Shih-chieh
    Contributors: 淡江大學化學學系博士班
    陳幹男;Chen, Kan-nan
    Keywords: 環氮丙烷;聚氨酯;自行架橋;azetidine;polyurethane;self-curing
    Date: 2007
    Issue Date: 2010-01-11 02:42:51 (UTC+8)
    Abstract: 本論文是以水性聚氨酯樹脂改質為主要目的。傳統水性聚氨酯樹脂分散液屬於線型高分子,且平均分子量並不大,所以樹脂薄膜對於有機溶劑的抵抗性並不佳,所表現的機械強度亦不如傳統溶劑型聚氨酯樹脂,因此,本研究目標乃在合成一系列含環氮丙烷官能基之架橋劑、含三元次乙亞胺官能基之架橋劑、含單元次乙亞胺與異氰酸酯官能基架橋劑與含三元環氧基架橋劑等,並引入水性聚氨酯樹脂當中,使其扮演常溫型架橋劑,進而達到樹脂改質之目的。
    In this research, the modification of aqueous-based polyurethane (PU) dispersion is the main target. Because the traditional aqueous-based PU resin is linear polymer and because it has low average molecular weight which causes the traditional aqueous-based PU exhibits poor organic solvent resistant and low mechanical performance.
    In this research, a series of azetidinyl-containing curing agent, triaziridinyl-containing curing agent, mono-aziridinyl and mono-isocyanate containing curing agent and tri-oxirane-containing curing agent are synthesized and introduced into aqueous-based PU dispersion to act as the latent curing agent at ambient temperature.
    The chemical structures of these synthesized curing agents are identified by FT-IR and FT-NMR. The curing reaction between curing agent and PU is explained by the modeling reaction. The physical properties (such as gel content, water-uptake, degree of alcohol swollen, contact angle, hardness etc.), the tensile strength, the thermal properties of these cured PU resins are evaluated in this research.
    Appears in Collections:[Graduate Institute & Department of Chemistry] Thesis

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