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題 名 | 多元醇分子量及混摻孟宗竹竹炭粉對水性聚胺基甲酸酯樹脂性質之影響=Influence of the Molecular Weight of Polyhydric Alcohol and the Blending of Moso Bamboo Charcoal on the Properties of Waterborne Polyurethane Resins |
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作 者 | 李垣勳; 陳奕君; 胡銘珊; 李雲蕓; 李文昭; | 書刊名 | 林產工業 |
卷 期 | 35:1 2016.03[民105.03] |
頁 次 | 頁31-42 |
分類號 | 467.4 |
關鍵詞 | 孟宗竹竹炭; 多元醇; 樹脂薄膜; 熱性質; 水性聚胺基甲酸酯樹脂; Moso bamboo charcoal; Polyhydric alcohol; Resin films; Thermal properties; Waterborne polyurethane resins; |
語 文 | 中文(Chinese) |
中文摘要 | 本研究以分子量1000及2000之聚四甲基醚二醇(Polytetramethylene ether glycol;PTMG)為多元醇(Polyhydric alcohol)原料製備WPU-1及WPU-2兩種水性聚胺基甲酸酯樹脂(Waterborne polyurethane resins;WPU),合成時以異佛爾酮二異氰酸酯(Isophorone diisocyanate)為異氰酸酯原料,二羥甲基丙酸(Dimethylolpropionic acid)為內部乳化劑,三乙胺(Trimethylamine)為中和劑,乙二胺(Ethylenediamine)為鏈延長劑。由結果得知,WPU-2之平均分子量及平均粒徑大於WPU-1。WPU-1所製作之樹脂薄膜有較多之胺酯結構,其浸水試驗之膨潤係數較大,重量保留率較低,然乙酸乙酯溶出試驗之重量保留率較高。拉伸試驗結果顯示WPU-1樹脂薄膜有較大剛性及拉伸強度,而WPU-2樹脂薄膜則較具備較大韌性。DMA分析顯示WPU-2存在較明顯之兩相結構。TGA分析則顯示WPU-2之熱抵抗性優於WPU-1。添加樹脂重1%的孟宗竹竹炭粉可提高WPU樹脂薄膜之拉伸強度、拉伸模數及破壞能量,然添加量5%以上時則降低。DMA分析顯示添加孟宗竹竹炭粉並未改變WPU樹脂之兩相結構,但高溫側硬鏈段相轉移溫度降低,阻尼值波峰高度提高。TGA分析顯示添加孟宗竹竹炭粉並未改變WPU樹脂起始熱裂解行為。 |
英文摘要 | In this study, waterborne polyurethane resins, named WPU-1 and WPU-2, were prepared by using polytetramethylene ether glycol (PTMG) with the molecular weight of 1000 and 2000 as a polyhydric alcohol, respectively. Isophorone diisocyanate, dimethylolpropionic acid, trimethylamine, and ethylenediamine were used as the isocyanate, internal emulsifier, neutralizer, and chain extender, respectively. The experimental results showed that WPU-2 had larger average molecular weight and average particle dimension than that of WPU-1. Resin films that prepared with WPU-1 had more urethane structure, larger swelling coefficient and less weight retention after water soaked test, but had higher weight retention after dissolving in ethyl acetate. The results of tensile test showed that resin films of WPU-1 had higher stiffness and tensile strength. On the other hand, resin films of WPU-2 had better toughness. DMA result showed that a significant two-phase structure existed in WPU-2. TGA result showed that WPU-2 had better heat-resistance than that of WPU-1. The tensile strength, tensile modulus and breaking energy of WPU resin films could be increased when 1% of moso bamboo charcoal was added. However, it decreased when over 5% of moso bamboo charcoal was added. DMA result showed that the two-phase structure of WPU was not changed by moso bamboo charcoal. Nonetheless, the temperature of phase transition for hard segment at high temperature side decreased and the height of the peak of damping value increased. TGA result showed that the initial thermal degradation behavior was not changed by adding the moso bamboo charcoal. |
本系統中英文摘要資訊取自各篇刊載內容。