以聚二酸改質聚醯胺彈性體之製備與性質研究

Preparation and Properties of Dimer Acid-Modified Polyamide Elastomers

涂耀國(Yawo-Kuo Twu) ； 劉俊男(Chun-Nan Liu)

《大葉學報》 8卷2期 (1999/12) Pp. 127-133

https://doi.org/10.7119/JDYU.199912.0127

摘要

本研究採用三十六碳聚二酸（dimer acid）做為聚醯胺彈性體（TPAE）之改質劑，利用不同比例之聚二酸與己二酸（adipic acid）混合成的鏈延長劑，以己內醯胺（caprolactam）為硬節段和聚四甲基醚二醇（PTMEG）為軟節段，以一次進料法（one-shot process）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（water absorption）等的分析驗證結果顯示，改質TPAE的耐熱性質隨著dimer acid比例的增加有上升的趨勢；在吸水率方面則隨著dimer acid比例上升而有明顯的下降。

關鍵字

聚醯胺彈性體 ； 三十六碳聚二酸 ； 鏈延長劑 ； 一次進料法 ； 硬節段 ； 軟節段

並列摘要

The synthesis of C36 dimer acid-modified thermoplastic polyamide elastomers (TPAEs) was carried out by a one-shot process. C36 dimer acid was mixed with adipic acid as a second chain extender in a reaction which incorporated caprolacatam and PTMEG as hard and soft segments, respectively. The thermal properties of TPAEs were studied by DSC and TGA, and water absoption of TPAEs were tested to determine 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.

並列關鍵字

thermoplastic polyamide elastomers (TPAEs) ； C36 dimer acid ； chain exterder ； one-shot process ； hard segment ； soft segment