臺灣博碩士論文加值系統

本研究期望以電化學方式聚合出一均勻的導電複合膜。實驗部分以乙睛作為溶劑，並以四丁基四氟硼酸銨作為電解質以定電壓聚合法進行聚合。分別探討噻吩單體、環氧樹脂及其將二者合併後的複合系統；並改變反應物濃度、電解質濃度以及聚合電壓等控制變數對電化學聚合的影響。
在實驗成果發現到:相較於單純的聚噻吩系統以及環氧樹脂系統；複合系統需要較高的聚合電壓以及較高的噻吩單體濃度方能聚合出一完整的導電複合膜。調整反應物濃度、電解質濃度以及聚合電壓等的變數方面於交流阻抗分析的部分發現到導電複合膜的阻抗特性會隨著環氧樹脂濃度的提高而有所增加；但卻隨著提高噻吩單體濃度、電解質濃度及聚合電壓卻有所下降。另外在表面型態方面可以觀察到增加環氧樹脂濃度以及電解質濃度此兩變數所得到的導電複合膜表面相當的平坦；不過在提高噻吩單體濃度方面所得到的導電複合膜卻呈現了島狀結構的型態。

The purpose of this study is to develop a uniform conducting composite coating through electro-polymerization for corrosion prevention. The composite system consists of polythiophene embedded in epoxy matrix.The electro-polymerization systems contained monomer with acetonitrile was used as the solvent, and tetrabutylammonium tetrafluoroborate (TBATFB) was the electrolyte that catalyzed the reaction of epoxy. Effects of the reactant concentrations, electrolyte concentration, and polymerizing potential were investigated.

Our results showed that comparing with pure polythiophene, composite systems required higher voltage and much higher thiophene monomer concentrations. Both the surface morphology and electrochemical properties varied significantly with the polymerization conditions. The polarization impedances of the composites increased with epoxy concentration, but decreased with increasing thiophene and TBATFB.High level of epoxy and TBATFB flattened the coating surface. Thiophene on the other hand, generated island structures on the surface.

目錄
致謝 I
中文摘要 II
Abstract IV
目錄 V
圖目錄 VIII
表目錄 XX
壹、 緒論 1
貳、 文獻回顧 2
2.1 腐蝕的原理與種類 2
2.1.1腐蝕定義 2
2.1.2腐蝕的分類 2
2.2 腐蝕的控制與防護 5
2.3 導電高分子在環氧樹脂中的應用 7
2.4 導電性高分子 10
2.4-1 導電高分子簡介 10
2.4-2 導電高分子的能帶理論 13
2.4-3 導電高分子的導電機制 14
2.5導電性高分子的電化學聚合 15
2.5-1 電化學聚合裝置 15
2.5-2 單體的選擇 16
2.5-3 溶劑與支撐電解質的選擇 16
2.5-4 電極的選擇 20
2.5-5噻吩簡介 20
2.5-6噻吩的聚合方法 21
2.6 環氧樹脂的性質 23
2.6-1 環氧樹脂簡介 23
2.6-2環氧樹脂電化學聚合 24
2.6-3 環氧樹脂交聯反應 25
2.7 實驗聚合方式與分析檢測原理 26
2.7-1 循環伏安法 26
2.7-2 定電壓法 28
2.7-3 交流阻抗分析 30
2.7-4 拉曼檢測 32
參、實驗藥品與方法 33
3.1實驗藥品 33
3.2實驗儀器 34
3.3實驗步驟 35
3.3.1 循環伏安測試 36
3.3.2 定電壓聚合 37
3.3.3 交流阻抗測試 38
肆、實驗結果與討論 41
4.1 聚噻吩系統 41
4.1.1循環伏安法聚合 41
一、掃描圈數的影響 41
二、噻吩單體濃度的影響 42
三、電解質濃度的影響 46
4.1.2 聚噻吩系統定電壓聚合法 49
一、聚合時間的影響 49
二、噻吩單體濃度的影響 53
三、電解質濃度的影響 55
四、聚合電壓的影響 58
4.2 環氧樹脂系統 98
4.2.1環氧樹脂系統循環伏安法 98
4.2.3 環氧樹脂系統定電壓聚合法 100
一、環氧樹脂濃度的影響 100
二、電解質的影響 103
三、聚和電壓的影響 106
4.3環氧樹脂與聚噻吩複合系統 127
4.3.1複合系統循環伏安法 127
4.3.3複合系統定電壓聚合法 129
一、噻吩單體濃度的影響 129
二、電解質濃度的影響 134
三、環氧樹脂濃度的影響 137
四、聚合電壓的影響 141
伍、結論與建議 173
陸、附錄 175
1. 氯化鈉水溶液交流阻抗分析 175
2. 複合系統循環伏安表面型態分析圖 178
3. 純電解質於定電壓下反應之電流時間關係圖 179
4. 拉曼檢測 180
5. TGA熱重損失分析 184
柒、參考文獻 186

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