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Title: | 離子液體對於氟橡膠/銀銅粉複合材料的機械性質及電性之影響 Effects of ionic liquid on the mechanical and electric properties of fluorine rubber/silver-coated copper composites |
Authors: | Wen-Hsien Liu 劉文賢 |
Advisor: | 童世煌 |
Keyword: | 拉伸性導體,離子液體,塑化劑,氟橡膠, stretchable conductor,ionic liquid,plasticizer,fluorine rubber, |
Publication Year : | 2019 |
Degree: | 碩士 |
Abstract: | 拉伸性導電材料廣泛的應用於穿戴式電子裝置上。本研究使用氟橡膠、片狀銀銅粉和離子液體製備可拉伸導電膠,並使用1-Ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([C2MIM+][Tf2N-])、1-Ethyl-3-methylimidazolium trifluoromethanesulfonate ([C2MIM+][TfO-])和1-Ethyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide ([C2PYR+][Tf2N-])三種離子液體來探討其對於氟橡膠的塑化效應,但並非所有的離子液體對於氟橡膠都有良好的塑化效果,其中含有雙三氟甲烷磺酰亞胺(bis(trifluoromethylsulfonyl)imide)陰離子([Tf2N-])的離子液體對於氟橡膠來說是良好的塑化劑,可顯著提升拉伸導電膠的拉伸性。在沒有離子液體的情況下,片狀銀銅粉和氟橡膠重量比為3:1的導電膠會在拉伸30%時斷裂,而在添加離子液體後,拉伸性顯著提升至超過400%,且維持一定的導電度,此效果遠比以界面活性劑當作氟橡膠之塑化劑來的好。我們將此拉伸性的提升歸因為離子液體造成的氟橡膠儲存模數(Storage modulus)減少和玻璃轉移溫度(glass transition temperature)降低,同時,這也代表了橡膠和離子液體之間的相容性是提升拉伸導電膠拉伸性質的關鍵。 Printable elastic conductors are widely used in wearable electronics. In this work, we reported a stretchable conductive paste containing fluorine rubber, silver-coated copper flakes, and ionic liquids. We used three ionic liquids, including 1 -Ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([C2MIM+][Tf2N-]), 1-Ethyl-3-methylimidazolium trifluoromethanesulfonate ([C2MIM+][TfO-]), and 1-Ethyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide ([C2PYR+][Tf2N-]), for this work, among which the ionic liquids containing Tf2N- anion were found to be excellent plasticizers that can significantly increase the stretchability of the paste. The paste with 3:1 weight ratio of metal flake to rubber in the absence of ionic liquid breaks at 30% elongation, while the elongation at break of the paste with the ionic liquid greatly increases to more than 400% where the paste remains conductive, outperforming the pastes prepared by adding surfactants as plasticizers. We attribute the improvement of the stretchability to the reduction of storage modulus and the decrease of glass transition temperature for the fluorine rubber caused by the ionic liquid, which reveals that the compatibility between rubbers and ionic liquids is key to the stretchability of the conductive pastes. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/72968 |
DOI: | 10.6342/NTU201901607 |
Fulltext Rights: | 有償授權 |
Appears in Collections: | 高分子科學與工程學研究所 |
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File | Size | Format | |
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ntu-108-1.pdf Restricted Access | 3.96 MB | Adobe PDF |
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