A comparative study of epoxy and polyurethane based coatings containing polyaniline-DBSA pigments for corrosion protection on mild steel

被引：58
|
作者：
Diniz, F. B. [1 ]
De Andrade, G. F. [1 ]
Martins, C. R. [2 ]
De Azevedo, W. M. [1 ]
机构：
[1] Univ Fed Pernambuco, Dept Quim Fundamental, CCEN, BR-50740560 Recife, PE, Brazil
[2] Univ Fed Sao Paulo, Dept Ciencias Exatas & Terra, BR-05508900 Sao Paulo, Brazil
来源：
PROGRESS IN ORGANIC COATINGS | 2013年 / 76卷 / 05期
关键词：
Polyaniline; Epoxy; Polyurethane; Raman spectroscopy; Steel; Electrochemical impedance spectroscopy; ANTICORROSION PERFORMANCES; POLYPYRROLE; ADDITIVES; POLYMER; RAMAN;
D O I：
10.1016/j.porgcoat.2013.02.010
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Organic coatings based on epoxy and polyurethane matrices containing polyaniline doped with dodecyl benzene sulfonic acid (Pani-DBSA) were prepared and applied over steel plates (SAE 1020). The plates were submitted to salt spray chamber for up to 30 days in order to evaluate the corrosion protection of these coatings. The properties of the coated plates were analyzed as a function of time by electrochemical impedance spectroscopy, open circuit potential, optical microscopy, and Raman spectroscopy. In general, results indicate a decrease in the electrical resistance, increase in capacitance and decrease in open circuit potential. Epoxy based coatings have improved performance when Pani-DBSA is used as pigment, whereas for the polyurethane coatings, Pani-DBSA seems to play an adverse effect. Raman spectroscopy indicates a possible chlorination of the epoxy matrix after 30 days exposure to salt spray chamber. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：912 / 916
页数：5
相关论文
共 50 条
  • [21] Enhanced Charge Transport and Corrosion Protection Properties of Polyaniline–Carbon Nanotube Composite Coatings on Mild Steel
    T. Rajyalakshmi
    Apsar Pasha
    Syed Khasim
    Mohana Lakshmi
    M. V. Murugendrappa
    Nacer Badi
    Journal of Electronic Materials, 2020, 49 : 341 - 352
  • [22] Investigation on the effect of nano-ceria on the epoxy coatings for corrosion protection of mild steel in natural seawater
    Xavier, Joseph Raj
    ANTI-CORROSION METHODS AND MATERIALS, 2018, 65 (01) : 38 - 45
  • [23] Preparation and corrosion protection of three different acids doped polyaniline/epoxy resin composite coatings on carbon steel
    Hu, Chuanbo
    Li, Tingzhen
    Yin, Huawei
    Hu, Lei
    Tang, Jianting
    Ren, Kangning
    COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 2021, 612
  • [24] Hybrid sol-gel coatings containing clay nanoparticles for corrosion protection of mild steel
    Santana, Ianina
    Pepe, Andres
    Schreiner, Wido
    Pellice, Sergio
    Cere, Silvia
    ELECTROCHIMICA ACTA, 2016, 203 : 396 - 403
  • [25] Enhanced Charge Transport and Corrosion Protection Properties of Polyaniline-Carbon Nanotube Composite Coatings on Mild Steel
    Rajyalakshmi, T.
    Pasha, Apsar
    Khasim, Syed
    Lakshmi, Mohana
    Murugendrappa, M. V.
    Badi, Nacer
    JOURNAL OF ELECTRONIC MATERIALS, 2020, 49 (01) : 341 - 352
  • [26] Corrosion protection of silane based coatings on mild steel in an aggressive chloride ion environment
    Jeyaram, R.
    Elango, A.
    Siva, T.
    Ayeshamariam, A.
    Kaviyarasu, K.
    SURFACES AND INTERFACES, 2020, 18
  • [27] In situ electrochemical synthesis of polyaniline/f-MWCNT nanocomposite coatings on mild steel for corrosion protection in 3.5% NaCl solution
    Kumar, A. Madhan
    Gasem, Zuhair M.
    PROGRESS IN ORGANIC COATINGS, 2015, 78 : 387 - 394
  • [28] A comparative experimental and theoretical calculation study of CaAl-LDH modified with various aromatic inhibitors for corrosion protection study in epoxy coatings
    Wang, Jingjing
    Cao, Yanhui
    Xue, Junhao
    Zhang, Xinyue
    Liang, Yu
    Chen, Kaifeng
    Huang, Congshu
    Zheng, Dajiang
    CORROSION SCIENCE, 2024, 231
  • [29] Enhanced corrosion protection of mild steel by the synergetic effect of zinc aluminum polyphosphate and 2-mercaptobenzimidazole inhibitors incorporated in epoxy-polyamide coatings
    Mirzakhanzadeh, Z.
    Kosari, A.
    Moayed, M. H.
    Naderi, R.
    Taheri, P.
    Mol, J. M. C.
    CORROSION SCIENCE, 2018, 138 : 372 - 379
  • [30] Enhanced Corrosion Protection of A-36 Steel Using Epoxy-Reinforced CSA-Doped Polyaniline-SnO2 Nanocomposite Smart Coatings
    Khasim S.
    Pasha A.
    Journal of Bio- and Tribo-Corrosion, 2021, 7 (01)
12345