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

被引：8

作者：

Lee, Y. L. ^{[1
]}

Luo, X. L. ^{[2
]}

Hu, S. J. ^{[2
]}

Li, Y. B. ^{[2
]}

Buchheit, R. G. ^{[1
]}

机构：

[1] Ohio State Univ, Dept Mat Sci & Engn, Fontana Corros Ctr, Columbus, OH 43210 USA

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

来源：

CORROSION (GENERAL) - 225TH ECS MEETING | 2014年 / 61卷 / 20期

关键词：

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

D O I：

10.1149/06120.0001ecst

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Crude glycerol (CG), a low-value byproduct 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 (FFAs), fatty acid methyl esters (FAMEs), and glycerides. In this study, crude glycerol-based waterborne polyurethane (WPU) coatings were prepared from polyols synthesized using crude glycerol as a sole feedstock via a thermochemical conversion process. The corrosion properties of coatings were characterized by electrochemical impedance spectroscopy (EIS), polarization measurement and salt spray test. The initial experimental results show that crude glycerol-based WPU coatings have a considerably enhanced corrosion resistant performance of metallic substrate.

引用

页码：1 / 14

页数：14

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