Aliphatic Polyurethane-Montmorillonite Nanocomposite Coatings: Preparation, Characterization, and Anticorrosive Properties

被引：19

作者：

Ashhari, Shabnam ^{[1
]}

Sarabi, Ali Asghar ^{[1
]}

Kasiriha, Seyed Mahmoud ^{[1
]}

Zaarei, Davood ^{[1
]}

机构：

[1] Amirkabir Univ Technol, Polymer Fac, Tehran, Iran

来源：

JOURNAL OF APPLIED POLYMER SCIENCE | 2011年 / 119卷 / 01期

关键词：

barrier; clay; coatings; CLAY NANOCOMPOSITE; BARRIER PROPERTIES; CORROSION; POLYMERIZATION; MORPHOLOGY; SORPTION; EIS;

D O I：

10.1002/app.32656

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Polyurethane (PU)-clay nanocomposite coatings were prepared by a sonication method. The stability and morphology of these coatings was characterized by turbidometry, X-ray diffraction, and transmission electron microscopy. The anticorrosive properties of these coatings were investigated by salt-spray and electrochemical impedance spectroscopy methods. According to the results, dispersed nanoclay layers in the matrix of the nanocomposite coating compositions led to superior anti-corrosive characteristics compared to those of pure PU coatings. The best results were obtained with coatings containing about 5 wt % clay. The resistance of the coating containing 5% clay was about 9.002 G Omega after 225 days of immersion in a 3.5 wt % NaCl solution, whereas it was only 97 k Omega for the pure PU coating. (C) 2010 Wiley Periodicals, Inc. J Appl Polym Sci 119: 523-529, 2011

引用

页码：523 / 529

页数：7

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