Effect of carbon nanotubes on the corrosion resistance of water-borne acrylic coatings

Song, Dongdong; Zhu, Yin; Liu, Fengjuan; Wan, Hongxia; Gao, Jin; Zhang, Dawei; Li, Yong

doi:10.1016/j.porgcoat.2017.04.043

Cited by 54 publications

(23 citation statements)

References 20 publications

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“…They showed that the incorporation of a small number of nanoparticles-especially Fe 2 O 3 and halloysite clay-into the epoxy coating can enhance the corrosion resistance of the epoxy-coated steel. In recent years, it was reported that carbon derivatives, such as carbon nanotubes (CNTs) [16][17][18], graphene (Gr) and graphene oxide (GO) [19][20][21][22][23][24][25][26][27][28][29][30][31] can be used as anti-corrosion additives to organic coatings. Gr has attracted considerable attention owing to its extraordinary electrical and physical properties, especially its impermeable nature [32][33][34].…”

Section: Introductionmentioning

confidence: 99%

Development and Characterization of Anticorrosion and Antifriction Properties for High Performance Polyurethane/Graphene Composite Coatings

2018

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Abstract:This work contributes to the development and characterization of the corrosion resistance and antifriction properties of high performance polyurethane (PU)/graphene (Gr) composite coating. In this study, PU composite coatings containing 0, 2, 4 and 8 wt.% of Gr were prepared and evaluated using various corrosion and mechanical tests, namely electrochemical impedance spectroscopy, salt spray tests, cross-cut tape tests and dynamic mechanical analysis. Antifriction properties of the coatings were evaluated using a tribometer with a ball-on-disc mode at room temperature. The corrosion resistance and adhesion property of the PU coatings were found to be enhanced by adding 4 and 8 wt.% of Gr. The coefficient of friction revealed that the antifriction properties of the PU/Gr composite coatings were 61% lower than those of the conventional coating when the Gr content was increased to 8 wt.%.

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Section: Introductionmentioning

confidence: 99%

Development and Characterization of Anticorrosion and Antifriction Properties for High Performance Polyurethane/Graphene Composite Coatings

2018

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“…In addition, the variation of pore resistance (Rpo) also reflects the protective performance of coatings. As well known, the low Rpo represents water uptake in the coating . Figure C shows the logarithm values of derived Rpo values (ohm) from circuit fitting for epoxy coating and MWCNT/epoxy coating at different immersion time.…”

Section: Resultsmentioning

confidence: 80%

“…As well known, the low Rpo represents water uptake in the coating. 8 Figure 4C shows the logarithm values of derived Rpo values (ohm) from circuit fitting for epoxy coating and MWCNT/epoxy coating at different immersion time. The Rpo for the epoxy coating dropped sharply with an increase in immersion hours in NaCl medium and was found to be low in photodegraded BGD medium.…”

Section: Circuit Fitting Of Eis Spectra and Corresponding Elementsmentioning

confidence: 99%

“…The reinforcement of nanofillers enhances the barrier properties of coatings via increasing the path of corrosive ions reaching to the metal/coating interface . In this regard, MWCNT acts as promising nanofiller in improving the corrosion protection performance of epoxy coatings owing to its super mechanical strength, high thermal, and chemical stability . However, 1 major prerequisite to fabricate an effective nanocomposite coating with enhanced anticorrosive performance is the stable dispersion of MWCNT in epoxy matrix .…”

Section: Introductionmentioning

confidence: 99%

“…6,7 In this regard, MWCNT acts as promising nanofiller in improving the corrosion protection performance of epoxy coatings owing to its super mechanical strength, high thermal, and chemical stability. 8,9 However, 1 major prerequisite to fabricate an effective nanocomposite coating with enhanced anticorrosive performance is the stable dispersion of MWCNT in epoxy matrix. 10 It is well known that MWCNT tends to agglomerate due to the existence of strong Vander Waals forces and pi-pi interactions, which leads to poor dispersion; this causes a considerable decrease in barrier properties of coatings.…”

Section: Introductionmentioning

confidence: 99%

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Enhanced corrosion protection performance with MWCNT dispersed epoxy coating prepared under supercritical CO₂ assistance

Khanam

Singh

Zaidi

2018

Polymers for Advanced Techs

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The corrosion protection performance of epoxy coatings could be enhanced by incorporation of nanofillers such as MWCNT. However, a homogeneous dispersion of MWCNT in epoxy polymer is still a teasing challenge. Herein, we report an environmentally benign single‐step supercritical CO2 processing method to improve the dispersion of MWCNT in epoxy matrix in order to achieve an effective anticorrosive coating. The executed approach provides a cluster‐free uniform distribution of MWCNT in epoxy matrix as characterized with UV‐visible spectroscopy, Fourier transforms infrared spectroscopy, X‐ray diffraction, and surface analysis. The anticorrosive characteristics of MWCNT/epoxy coating were studied in NaCl as well as in photodegraded dye medium through electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization measurements. We observed the remarkable corrosion of model metal substrate in photodegraded dye medium besides NaCl medium. In both mediums, the protection efficacy of MWCNT/epoxy coating was deduced from the stable impedance arcs in Nyquist plot and increased impedance modulus. The electrochemical impedance spectra were best fitted with equivalent circuits showing the higher values of pore resistance. Also, the MWCNT/epoxy coating exhibited a positive shift of corrosion potential and possessed a lower corrosion rate as compared with neat epoxy coating. More direct evidence of the excellent barrier properties for MWCNT/epoxy coating was visualized in SEM images. The obtained results implied that the superior dispersion of MWCNT into epoxy matrix significantly reduces the porosity of coating and inhibits the permeability of corrosive ions. We expect supercritical CO2 assisted dispersion method can offer an efficient, cost‐effective, and industrially viable route to develop high performance protective coatings for varied commercialized applications.

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Development of Superhydrophobic Coating with Good Mechanical Durability and Self‐healing Effect

2024

Smart Protective Coatings for Corrosion Control

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Effect of carbon nanotubes on the corrosion resistance of water-borne acrylic coatings

Cited by 54 publications

References 20 publications

Development and Characterization of Anticorrosion and Antifriction Properties for High Performance Polyurethane/Graphene Composite Coatings

Development and Characterization of Anticorrosion and Antifriction Properties for High Performance Polyurethane/Graphene Composite Coatings

Enhanced corrosion protection performance with MWCNT dispersed epoxy coating prepared under supercritical CO₂ assistance

Development of Superhydrophobic Coating with Good Mechanical Durability and Self‐healing Effect

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Effect of carbon nanotubes on the corrosion resistance of water-borne acrylic coatings

Cited by 54 publications

References 20 publications

Development and Characterization of Anticorrosion and Antifriction Properties for High Performance Polyurethane/Graphene Composite Coatings

Development and Characterization of Anticorrosion and Antifriction Properties for High Performance Polyurethane/Graphene Composite Coatings

Enhanced corrosion protection performance with MWCNT dispersed epoxy coating prepared under supercritical CO2 assistance

Development of Superhydrophobic Coating with Good Mechanical Durability and Self‐healing Effect

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Product

Resources

About

Enhanced corrosion protection performance with MWCNT dispersed epoxy coating prepared under supercritical CO₂ assistance