電活性環氧樹脂/奈米碳管複合材料之製備與性質研究

Preparation and Properties of Electroactive Epoxy Resin/Carbon Nanotube Composite Materials

陳家騏(Chia-Chi Chen)

指導教授 ： 葉瑞銘

中原大學/理學院/奈米科技碩士學位學程/碩士(2011年)

https://doi.org/10.6840/cycu201100484

摘要

本研究首次探討電活性環氧樹脂，在添加電活性及非電活性官能基改質之多壁奈米碳管(Multi-walled Carbon Nanotubes, MWCNTs)後的分散效果及衍生的性質比較。電活性單體的合成係利用氧化偶合法合成，為具有半氧化半還原態之胺基封端苯胺三聚體 (Amino-Capped Aniline Trimer, ACAT)。表面含有電活性官能基改質之奈米碳管(A-CNT)的合成，是將多壁奈米碳管經由羧化及醯化反應，使多壁奈米碳管表面產生-COCl的官能基，再將苯胺三聚體與改質的奈米碳管反應而得。而不含電活性官能基的奈米碳管(O-CNT)，則是以市售的4,4'-Oxydianiline (ODA)進行反應。接著，將兩種改質不同官能基的奈米碳管依照不同比例添加到電活性環氧樹脂中，經由原位熱開環聚合反應，製備出一系列電活性環氧樹脂/奈米碳管複合材料。
本研究使用ACAT作為硬化劑，與Bisphenol A diglycidyl ether (DGEBA)反應，環氧樹脂的固化反應主要發生於環氧基(Epoxide gruop)，並利用傅立葉紅外線光譜儀(FTIR)觀察環氧基的反應情形。電活性環氧樹脂/奈米碳管複合材料經由電子顯微鏡、電性質、熱性質、機械性質之研究得知，表面改質電活性官能基之碳管(A-CNT)添加到電活性環氧樹脂中可以得到良好的分散性，在各種物理性質上也都比不含電活性官能基改質之碳管(O-CNT)還要好。將電活性環氧樹脂進一步應用到防腐蝕的測試上，可以發現隨著A-CNT的含量增加防腐蝕效果也會顯著提升。

關鍵字

電活性環氧樹脂 ； 奈米複合材料 ； 苯胺封端三聚體 ； 防腐蝕 ； 奈米碳管

並列摘要

In this study, the properties of electroactive epoxy resin/carbon nanotube composite materials with the addition of electroactive or non-electroactive functional groups modified multi-walled carbon nanotubes (MWCNTs) were compared. Amino-capped aniline trimer, ACAT, with emeraldine state was prepared by oxidative coupling reaction and used as an electroactive monomer. An electoactive ACAT modified carbon nanotubes (A-CNT) were prepared by carboxylation, acylation of MWCNTs; and then the -COCl modified MWCNTs were reacted with ACAT.
Similar reactions were carried out with a non-electroactive monomer 4,4'-Oxydianiline (ODA) to prepare an ODA modified carbon nanotubes (O-CNT). A series of electroactive epoxy resin/carbon nanotube composite materials were prepared successfully by the effective dispersion of A-CNT and O-CNT in the electroactive epoxy resin through in situ thermal ring-opening polymerization reaction of epoxy resin. ACAT was used as curing agent; Fourier-Transformation infrared (FTIR) spectroscopy was used to monitor the ring-opening reaction of the terminal epoxide groups of Bisphenol A diglycidyl ether (DGEBA). As a result, A-CNT was found to show better dispersion capability than that of O-CNT existed in nanocomposites based on the morphological observation of transmission electron microscopy (TEM). The A-CNT dispersed nanocomposites were also found to show better performance than that of O-CNT base on the study of the electrical properties, thermal properties, and mechanical properties.
For corrosion protection, the electroactive epoxy/A-CNT composite showed better than electroactive epoxy. The corrosion resistance was enhanced while the content of A-CNT was increased in electroactive epoxy.

並列關鍵字

nanocomposites ； electroactive epoxy resin ； aniline trimer ； carbon nanotube ； anti-corrosion

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