頁籤選單縮合
題名 | 醇酸樹脂製造聚胺酯發泡體之探討=Investigation on the Manufacturing of Polyurethane Foam from Alkyd Resins |
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作者 | 李文昭; 張嘉方; | 書刊名 | 林業研究季刊 |
卷期 | 26:1 2004.03[民93.03] |
頁次 | 頁27-35 |
分類號 | 467.41 |
關鍵詞 | 醇酸樹脂; 異氰酸酯; PU發泡體; Alkyd resin; Isocyanate; PU foam; |
語文 | 中文(Chinese) |
中文摘要 | 本研究以乙二醇(E)與己二酸(A)及鄰苯二甲酸酐(P)反應合成脂肪族醇酸樹脂(E-A)及芳香族醇酸樹脂(E-P),並將其分別與HDI、PMDI、Desmodur L、Desmodur N等四種異氰酸酯混合調配製造PU發泡體。由結果得知,醇酸樹脂與異氰酯種類會影響所製造PU發泡體之性質,其中脂肪族醇酸樹脂(E-A)配合脂肪族異氰酸酯(HDI、Desmodur N)可有較佳之發泡結果,而芳香族醇酸樹脂(E-P)則須配合芳香族異氰酸酯(PMDI、Desmodur L)。又(E-A)與Desmodur N所調配製造之發泡體具柔軟、強韌性質,且吸水性佳,(E-P)與PMDI所調配製造之發泡體則屬於硬質發泡體。而(E-A)與HDI所調配製造之發泡體缺乏強度,且浸水時發生崩解狀態,(E-P)與Desmodur L所調配製造之發泡體則發泡率偏低,缺乏做為發泡體或彈性體之特性。 |
英文摘要 | In this study, ethylene glycol (E) would react with adipic acid (A) or phthalic anhydride (P), and aliphatic alkyd resin (E-A) and aromatic alkyd resin (E-P) were prepared, respectively. These two alkyd resins were blended with isocyanate compound, such as HDI, PMDI, Desmodur N and Desmodur L, to make PU foams. The results showed that properties of PU foams would depend on the kinds of alkyd resin and isocyanate compound, aliphatic alkyd resin (E-A) should blend with aliphatic isocyanate compound (HDI, Desmodur N) and aromatic alkyd resin (E-P) should blend with aromatic isocyanate compound (PMDI, Desmodur L). PU foams made from blending (E-A) with Desmodur N had soft and toughness mechanical properties, and had good water absorption capability. PU foams made from blending (E-P) with PMDI had properties belonged to hard foam. PU foams made from blending (E-A) with HDI lacked mechanical strength, and would collapse when soaked in water. PU foams made from blending (E-P) with Desmodur L did not have enough foaming rate, could not be used as foam or elastomer. |
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