丁二酸衍生物腐蝕抑制劑之防蝕效果評估

Evaluation of the Anti-corrosion Effect of a Succinic Acid Derivative as a Corrosion Inhibitor

丁二酸衍生物（Succinic acid N-octyl amide簡稱SAOA）腐蝕抑制劑為一疏水性有機化合物，可溶於醇類配成防銹劑，利用噴塗、刷塗或浸泡方式進行零組件之防蝕表面處理，使用上甚為方便。研究中取WD-40防銹油與3～5wt%不同濃度之SAOA異丙醇溶液，於25℃，95%RH之醋酸環境下，針對1020鋼材及純銅進行防蝕效果比較，結果顯示SAOA防銹劑之防蝕性與WD-40防銹油相當；若於SAOA異丙醇容液中添加5%柴油或其他醇類，會使批覆層之表面結構改變，而影響其防蝕功能，其中以添加正癸醇之效果較佳，由SEM表面觀察可明顯看出其差異。

Succinic acid N-octyl amide (SAOA) was synthesized and used as an inhibitor for anticorrosion coatings. The coating can be applied by spraying, brushing or dipping for tentative protection of metallic articles for further processing or painting. In this study, coating solutions were prepared by dissolving various amounts of SAOA within the range of 3-5 wt% in isopropanol. The 1020 carbon steel and copper were exposed to an acetic acid containing environment at 25 , 95%RH for corrosion tests. Experimental results show that the corrosion protection efficiency of the coated steel is similar to that of WD-40 treated specimen. Furthermore, the performance of the above mentioned coating could be improved by adding some diesel oil or alcohols. The best corrosion protection of SAOA coatings was obtained by adding ndecyl alcohol as examined by SEM.