臺灣博碩士論文加值系統

聚醚醯胺彈性體（thermoplastic polyamide elastomers，TPAEs）具有良好之機械性質與強度、高低溫之安定性、比重輕、及優良之成型加工性質，依據文獻所示，聚醚醯胺彈性體之製程缺點，包括聚合反應時間過長、單體反應率偏低及產物有較高之吸水率等。本研究目的，即針對現有製程缺失，改善聚醚醯胺彈性體製程、縮短聚合反應製程時間、降低產物內單體及寡聚合物含量及改善吸水率等問題。
本研究為解決高吸水性之缺點，採用三十六碳聚二酸做為聚醚醯胺彈性體之改質劑，利用不同比例之聚二酸與己二酸混合成的鏈延長劑，以己內醯胺為硬節段和聚四甲基醚二醇為軟節段，以一次進料法進行TPAE的合成。並探討配方與TPAE產物性質的相關性。經由微差掃描熱卡計（DSC）、熱重量分析儀（TGA）及吸水率等的分析驗證結果顯示，改質TPAE的耐熱性質隨著聚二酸比例的增加有上升的趨勢；在吸水率方面則隨著聚二酸比例上升而有明顯的下降。
本研究另嘗試以尼龍 6為反應原料，以二次進料法進行聚醚醯胺彈性體合成，首先將尼龍 6解聚成寡聚合物，再將PTMEG及己二酸加入聚合，所得之TPAE聚合度不高，物化性質差，有待進一步研究。

The advantages of thermoplastic polyamide elastomers (TPAEs) are good physical and chemical properties, simpler processing, lower density, better control of product quality and recycling of scrap. The disadvantages are often requires long synthesis processing, high water absorbency, high monomer and oligomer content. The objects of this research is to modify the structure and process of TPAEs, so as to reduce the processing time, to decrease the monomer and oligomer content, and to enhance the TPAEs water resistance.
The synthesis of C36 dimer acid modified TPAEs were done. In a one-step process, C36 dimer acid was mixed with adipic acid as a second chain extender in a reaction which included caprolacatam and PTMEG as hard segment and soft segment respectively. The thermal properties of TPAEs were studied by a DSC and TGA, and water absorption of TPAEs were tested to determined the tendency of samples to absorb moisture. Results showed that modified TPAEs with higher C36 dimer acid content have better thermal properties as well as water resistance.
We also introduced Nylon 6 as starting materials of TPAEs polymerization . The synthesis of TPAEs was carried out by two-step process. First, Nylon 6 was depolymerized to oligomer, then reacted with PTMEG and added adipic acid as chain extender to form TPAEs. Results showed low degree of TPAEs polymerization and bed properties. It should need further investigation.
Keywords: , ,, , one-step process, two-step process, , ,

第一章 緒論 1
第二章 文獻回顧 5
2.1 前言 5
2.2 聚醯胺系彈性體 13
2.3 TPAE材料簡介 18
2.3-1 硬節段材料 18
2.3-2 軟節段材料 19
2.3-3 鏈延長劑 19
2.4 TPAE彈性形成機構 20
2.5 TPAE的優點及應用 22
2.5-1 優越的機械特性 22
2.5-2 低溫柔軟特性 22
2.5-3 比重低 25
2.5-4 優良加工性質 25
2.5-5 硬度範圍大 25
2.5-6 染色性佳 27
2.5-7 農業及香水應用 30
2.6 TPAE市場調查 30
2.7 國內外有關本論文之研究情況 30
第三章 聚醚醯胺彈性體製程研究 32
3.1 前言 32
3.2 儀器設備 34
3.3 原料與藥品 35
3.3-1聚合用藥 35
3.3-2解聚用藥 39
3.4 研究流程 40
3.4-1原料分析 40
3.4-2相容性探討 44
3.4-3傳統聚合反應 45
3.4-4 TPAE之聚二酸取代反應 45
3.4-5 解聚及聚合反應 46
3.4-6 產品分析 46
第四章 結果與討論 54
4.1 前言 54
4.2 原料分析 54
4.3 相容性探討 54
4.4 傳統聚合製程反應 55
4.5 TPAE之聚二酸取代反應 56
4.6 解聚及聚合反應 57
4.7 產品分析 58
4.7-1 CPL及寡聚物的殘留率分析 58
4.7-2 TPAE萃取液成份分析 60
4.7-3密度分析 70
4.7-4相對黏度測試 70
4.7-5吸水率測定 73
4.7-6 TPAE之微差熱掃描熱卡計分析 76
4.7-7 TPAE之熱重量分析 82
4.8 結論 89
第五章 結論與未來展望 91
參考文獻 94
附錄一 TPAE2~TPAE7之氮氣下TGA圖 99
附錄二 TPAE2~TPAE7之空氣下TGA圖 102

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