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題 名 | 本質導電性聚苯胺之防蝕研究=Studies on Corrosion Protection with Intrinsically Conductive Polyaniline |
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作 者 | 高立衡; 王麗芳; | 書刊名 | 高雄應用科技大學學報 |
卷 期 | 31 2001.12[民90.12] |
頁 次 | 頁13-24 |
分類號 | 467.42 |
關鍵詞 | 防蝕; 聚苯胺; 鈍態氧化膜; Anti-corrosion; Polyaniline; Passive oxide film; |
語 文 | 中文(Chinese) |
中文摘要 | 本研究之目標為利用陽極防蝕的原理,將所合成的質子酸摻雜之聚苯胺本質導電性高分子做為底漆,噴塗於冷軋鋼片上,利用其導電特性將鋼片表面迅速氧化,形成氧化層,再外塗環氧樹脂透明漆將聚苯胺鹼化,使其成為去質子酸型態之聚苯胺而不再導電,進而阻止電子傳遞使氧化不再發生而形成保護層,並阻絕與腐蝕之環境接觸,而達到防蝕的功效。 實驗設計以改變聚苯胺底漆在不同塗佈時間下的防蝕效果評估,發現上述底漆在定電位電解分析儀(potentiostat)中,腐蝕電位均往正偏移 500~800mV,腐蝕速率也大幅下降約□~□ mm/year。此外,也利用了電子顯微鏡(SEM)與偏光顯微鏡(polarized microscope)發現了鈍態氧化膜與一般腐蝕的氧化層具有截然不同的形態與顏色。 |
英文摘要 | This study is about synthesizing intrinsically conductive polyaniline (Emeralidine Salt, ES) as a corrosion protecting primer for cold rolled steel. The mechanism of anti-corrosion was found to be anodic type, i.e., the polyaniline film withdraws charge from the metal rapidly, forming an inert oxide layer and passivating metal surfaces against further corrosion. An epoxy top coat was applied to dedope ES from to non-conductive leucoemeraldine form and inhibited the transportation of electrons from metal surface. When the primer is painted in few hours, the top coat can be put on it, which can save much time. And the organic compound is cheaper、more convenient than other traditional anti-corrosion coating materials. A series of electrochemical measurement are also performed. The corrosion potential has a significant positive shift about 500~800 mV to the noble direction and a decrease of □~□ mm per year in the corrosion rate. Additionally, the morphology of the CRS surface oxalate is different from that obtained for the passive oxide film. |
本系統中英文摘要資訊取自各篇刊載內容。