聚苯胺/蒙脫土奈米複合塗料之製備及其在變溫條件下對冷軋鋼片之防腐蝕性質研究

Prepartation and Corrosion Protection Effect of DBSA-doped Polyaniline/Clay Nanocomposite Coatings on Cold Rolled Steel at Various Service Temperature

謝仁權(Jen-Chyuan Shieh)

指導教授 ： 葉瑞銘

中原大學/理學院/化學研究所/碩士(2006年)

https://doi.org/10.6840/cycu200600293

摘要

摘要
在本研究中以未改質過的鈉型蒙脫土與苯胺單體進行乳化聚合反應，其中十二烷基苯磺酸做為乳化聚合中之界面活性劑，且可作為聚苯胺之酸掺雜劑，過硫酸銨做為聚苯胺單体聚合之鏈起始劑(亦即氧化聚合劑)，以製備出一系列酸掺雜之聚苯胺/蒙脫土奈米複合材料，所得的產物並以傅利葉紅外線光譜儀、及X光繞射儀與穿透式電子顯微鏡來進行分析及鑑定；再以電化學方法於變溫條件下量測此材料的金屬防腐蝕性質；研究結果顯示，蒙脫土的導入將可有效提升聚苯胺整体應用的防腐性能，特別是在高溫的狀態下，防腐效果亦能有效提升，本研究亦進一步以不同的酸來掺雜，並研究其在變溫條件下的導電性質。

關鍵字

防腐蝕性質 ； 聚苯胺 ； 蒙脫土

並列摘要

Abstract
A series of polymer-clay nanocomposite(PCN) materials that consisted of poly(aniline) and layered montmorillonite (MMT) clay were prepared by effectively dispersing the inorganic nanolayers of MMT clay in organic aniline matrix via an emulsion polymerization. Organic aniline monomers were first intercalated into the interlayer regions of organophilic clay hosts and followed by a convertional emulsion polymerization. With CTAB and KPS as surfactant and initiator respectively .The as-synthesized PCN materials were characterized by infrared spectroscopy (FTIR), wide-angle powder X-ray diffraction (XRD), and transmission electron microscopy (TEM). PCN coatings with low clay loading (e.g., 1 wt%) on cold-rolled steel (CRS) at various service temperature, were found much superior in anticorrosion over those of aniline based on a series of electrochemical measurements of corrosion potential, polarization resistance, corrosion current and Impedance spectroscopy in 5.0 wt% aqueous NaCl electrolyte, The electrical conductivity of polyaniline-clay nanocomposite materials doped with different inorganic acid was further studied by four point probe technique.

並列關鍵字

Polyaniline ； Corrosion protection ； Clay

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