Corrosion Protection Studies of Crude Glycerol-Based Waterborne Polyurethane Coating on Steel Substrate

被引：8

作者：

Lee, Yuehlien ^{[1
,2
]}

Luo, Xiaolan ^{[3
]}

Hu, Shengjun ^{[3
]}

Li, Yebo ^{[3
]}

Buchheit, Rudolph ^{[1
]}

机构：

[1] Ohio State Univ, Dept Mat Sci & Engn, Fontana Corros Ctr, 116 W 19Th Ave, Columbus, OH 43210 USA

[2] Natl Taiwan Univ, Dept Engn Sci & Ocean Engn, Taipei 10764, Taiwan

[3] Ohio State Univ, Dept Food Agr & Biol Engn, Wooster, OH 44691 USA

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2016年 / 163卷 / 03期

关键词：

ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY; SOYBEAN-OIL; PERFORMANCE; BEHAVIOR; FOAMS; BIOPOLYOLS; CONVERSION; EIS;

D O I：

10.1149/2.0921602jes

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Crude glycerol, a low-value by-product from the biodiesel industry, has a significantly different composition compared to pure glycerol. Generally, crude glycerol contains various impurities, such as methanol, water, soap, free fatty acids, fatty acid methyl esters, and glycerides. In this study, waterborne polyurethane (WPU) coatings were prepared from crude glycerol-based polyols synthesized via a one-pot thermochemical conversion of crude glycerol. The corrosion properties of the coatings were characterized by electrochemical impedance spectroscopy, polarization measurements, and salt spray testing. The preliminary results showed that crude glycerol-based WPU coatings had a considerably enhanced corrosion resistant performance on metallic substrates. (C) 2015 The Electrochemical Society. All rights reserved.

引用

页码：C54 / C61

页数：8

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