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  • 學位論文

樹枝狀光硬化水性 PU壓克力樹脂合成與物性探討

The Study UV Curing Waterbone Polyurethane Acrylate Synthesis and Physical Properties Based on Dendrimer

指導教授 : 芮祥鵬
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摘要


本研究中所使用的高分子為樹枝狀高分子(Dendrimer),具高度分枝,為三度空間,立體結構近似球狀,且未端帶有數十個Hydroxy Group 官能基。將末端官能基與不同莫爾數的異佛爾酮二異氰酸酯(IPDI)、甲苯-二異氰酸酯(TDI)兩種不同異氰酯與丙烯酸羥乙酯(HEA)、酸酐、二甲基乙醇胺等原料進行加成反應。在反應過程中可以藉由紅外線光譜分析儀(FT-IR)來判定反應是否完成,且合成出一系列不同枝數的光硬化水性聚氨酯丙烯酸酯,並探討上述兩類水性光固化樹脂的親水性與親水基團含量的影響;詳細討論了光起始劑和樹脂結構對光固化速度的影響;並由FT-IR及NMR鑑定其結構後經由鉛筆度計、最大親水率、耐黃變、流變儀,做一系列連續測試。 由這些測試後的數據可以發現到,當聚氨酯丙烯酸酯的接枝數越多時,可有效提高材料本身耐熱性。在硬度方面隨著聚氨酯丙烯酸酯接枝越多;呈線性增加。而在最大溶水性測試中可以發現,隨著親水基團含量的提高,分子鏈親水性增強,乳液粒徑下降,乳液的分散性、穩定性均提高。但是聚氨酯丙烯酸酯接枝數量與親水基的數量要在一定比例下,才能得到最佳物性與溶水性。在耐黃變測試上;可以發現到,當聚氨酯丙烯酸酯接枝越多黃化狀況愈明顯,但還有另一個因數影響黃化速度就是異氰酸酯本身的結構;經由耐候試驗機測試後歸納發現當異氰酸結構中含有苯環的其耐黃變性較差。

並列摘要


The polymer used in this study is a dendrimer, which is possessed of highly branching, a spheroidal and steric structure and a few tens of hydroxyl groups at the end. The functional groups at the end, IPDI and TDI, by different moles, react with the raw materials of HEA, acid anhydride, dimethyl ethanolamine, etc. to proceed the addition reaction. In the process of reaction, whether the reaction is complete or not can be determined by FT-IR. A series of UV curing and water borne polyurethaneacrylates, with different branches, are synthesized and analyzed to explore the effects of both hydrophile and content of hydrophilic group. The detailed discussion is to explore the effects of optical initiator and resin structure on the UV curing rate. A series of continued tests is done by the pencil meter, maximum hydrophile rate, non -yellowing and rheometer. Through the results of tests, we discovered that the heat resistance of the materials is enhanced when the branches of polyurethaneacrylates increase. The hardness is linear enhanced when the branches of polyurethaneacrylates increase. In the test of amount in water, the hydrophile of molecular chain increases, chylomicron size decreases, dispersibility and stability of chylomicron increase when the content of hydrophilic group is enhanced. However, the best physical property and amount in water are obtained by an immovable ratio of branches and hydrophilic groups of polyurethaneacrylate. In the test of non-yellowing, the yellowing is more obvious with the more branches of polyurethaneacrylate, but the yellowing rate is also effected by another reason which is the structure of isocyanate. After the test of weatherometer, we inductively infer that when the isocyanate structure contains benzene ring, its non-yellowing property is poorer.

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被引用紀錄


蔡仲倫(2010)。樹枝狀水性PU壓克力樹脂之光硬化動力學與機械性質探討〔碩士論文,國立臺北科技大學〕。華藝線上圖書館。https://doi.org/10.6841%2fNTUT.2010.00446
王博正(2010)。樹枝狀含硫高折射率光硬化樹脂之合成與物性探討〔碩士論文,國立臺北科技大學〕。華藝線上圖書館。https://www.airitilibrary.com/Article/Detail?DocID=U0006-1607201014484800
蘇哲盟(2011)。樹枝狀水性PU壓克力樹脂之合成與紫外光硬化動力學探討〔碩士論文,國立臺北科技大學〕。華藝線上圖書館。https://www.airitilibrary.com/Article/Detail?DocID=U0006-1807201120113800
林玠志(2012)。樹枝狀光硬化水性PU壓克力樹脂之合成與光硬化動力學及物性探討〔碩士論文,國立臺北科技大學〕。華藝線上圖書館。https://www.airitilibrary.com/Article/Detail?DocID=U0006-0308201209120900
丁逸恬(2013)。紫外光固化型磷系阻燃劑之合成、動力學探討及熱性質分析〔碩士論文,國立臺北科技大學〕。華藝線上圖書館。https://www.airitilibrary.com/Article/Detail?DocID=U0006-1907201322550900

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