Investigation of the corrosion protection behavior of natural montmorillonite clay/bitumen nanocomposite coatings

Zamanizadeh, H R; Shishesaz, Mohammadreza; Danaee, I.; Zaarei, Davood

doi:10.1016/j.porgcoat.2014.08.011

Cited by 35 publications

(8 citation statements)

References 25 publications

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“…Another useful parameter for understanding the behavior of coatings is coating capacitance (C coat ). Generally, the coatings with lower C coat exhibit a better barrier protection against the penetration of corrosive ions [37], and water absorption causes an improvement in the coating’s dielectric constant, resulting in the increase in coating capacitance. It can be seen that the lowest C coat value was obtained from PANI/Gr 0.6 -ZRP coatings after 30 days of immersion, exhibiting the best barrier properties of the PANI/Gr 0.6 -ZRP coatings.…”

Section: Resultsmentioning

confidence: 99%

Effect of Conducting Polyaniline/Graphene Nanosheet Content on the Corrosion Behavior of Zinc-Rich Epoxy Primers in 3.5% NaCl Solution

et al. 2019

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The corrosion behavior of zinc-rich epoxy primers or paints (ZRPs) with different conducting polyaniline-grafted graphene (PANI/Gr) contents was investigated. Conductivity of the formed PANI/Gr nanosheets was significantly improved by employing the Gr as the inner template to synthesize the PANI. The protective properties and electrochemical behavior of coatings with artificial defects were investigated by monitoring the free corrosion potential versus time and by using localized electrochemical impedance spectroscopy (LEIS). A synergetic enhancement of the physical barrier role of the coating and the zinc sacrificial cathodic protection was achieved in the case of ZRP including PANI/Gr nanosheets. In addition, the ZRP mixed with the PANI/Gr at a content of 0.6% exhibited the best anticorrosion performance across the range of investigated PANI/Gr contents.

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Section: Resultsmentioning

confidence: 99%

Effect of Conducting Polyaniline/Graphene Nanosheet Content on the Corrosion Behavior of Zinc-Rich Epoxy Primers in 3.5% NaCl Solution

et al. 2019

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“…The effective area of the working electrode was 0.785 cm 2 . To record and evaluate the data obtained from electrochemical impedance spectroscopy and fit them with the equivalent electrical circuits, Zview2 software was used . The EIS test was repeated three times for each sample, and the results were reported as the mean and standard deviation.…”

Section: Methodsmentioning

confidence: 99%

SiAlON–epoxy nanocomposite coatings: Corrosion and wear behavior

Moradi

Aliofkhazraei

Toorani

et al. 2016

J of Applied Polymer Sci

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In this study, epoxy powder as a matrix was combined with different contents of silicon–aluminum–oxygen–nitrogen (SiAlON) nanoparticles using a planetary ball mill. Pure epoxy and nanocomposite powders were applied on the surface of plain carbon steel components by the electrostatic spraying method. Curing of the coatings was done in an oven or microwave for the appropriate time. The coating structure and morphology of the SiAlON nanoparticles were studied by scanning electron microscopy and transmission electron microscopy, respectively. The corrosion properties of the coatings were assessed by immersion, Tafel polarization, and electrochemical impedance spectroscopy tests in 3.5% NaCl solution. The results show that addition of 10 wt % SiAlON nanoparticles markedly increases the corrosion resistance of epoxy coatings. Thus, it can be inferred that the corrosion rate of these coatings is 15 to 18 times lower than that of pure epoxy samples and 8 to 11 times lower than coatings with 20 wt % SiAlON. The higher corrosion resistance of nanocomposite coatings can be attributed to the barrier properties of SiAlON nanoparticles. The tribological performance of the coatings was studied with the pin‐on‐disk test. The results of wear testing show that the samples containing 10 wt % SiAlON provide about five times more wear resistance than pure ones and about two times more than coatings with 20 wt % SiAlON. However, the coefficient of friction for nanocomposite coatings is reduced about 50% compared to the pure sample. Also, the curing process in either regime (oven or microwave) has the same effect on the corrosion and wear properties, and the coatings are completely crosslinked. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43855.

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“…The first one consists of the addition of clay and polymer to bitumen as separate entities, while in the second one a preformed PLS is added to the bitumen with the same procedures used for pure polymers. In the literature of bitumen nanocomposites, to our knowledge, transmission electron microscopy (TEM) has been rarely used to investigate the final morphology [82], while indirect information was most likely obtained by X-ray diffractometry.…”

Section: The Bitumen-polymer-layered Silicate Ternary (Bpls)mentioning

confidence: 99%

“…Walters [79] combined the use of Cloisite 30B (a bentonite modified with methyl, tallow, bis-2-hydroxyethyl, and quaternary ammonium salt) and a biochar (also reduced to nanodimensions) and observed an intercalated/exfoliated structure, as well as an antiaging positive effect of the fillers. Other papers describing bitumen-LS mixes, but not the silicate structure or the effects on aging are those by Abdullah et al [80] and Zamanizadeh et al [81,82].…”

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confidence: 99%

Effect of Nanoadditives on Bitumen Aging Resistance: A Critical Review

Filippi

Cappello

Mercé

et al. 2018

Journal of Nanomaterials

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Starting from the eighties, the use of nanoadditives registered an increasing attention in the scientific and patent literature, especially for the case of polymeric nanocomposites. In the last decade, this involved bituminous materials, modified either with nanosized fillers or with polymeric nanocomposites. One of the expected benefits is an increased resistance of the binder to aging. After a short introduction underlining the uncertainties and risks of artefacts in aging tests, a review is given, focusing on the antiaging properties of layered silicates, which are by far the most important nanoadditives for bitumens. Together with layered silicates, other materials such as nanohydrated lime, nanosilica, and layered double hydroxides are mentioned. Preparation and characterization of the binary bitumen/layered silicate and ternary bitumen/layered silicate/polymer systems are described in order to individuate the aspects that influence the antiaging effect. Even if the available literature is quite abundant and unanimously confirms that nanoadditives may improve bitumen durability, there is a lack of studies clarifying the involved mechanisms. As it is for conventional fillers, it seems to be a combination of physical and chemical interactions. Nanoadditives with different chemistries, porosities, and interlayer spacings differently absorb the polar components from the bitumen, thus affecting their predisposition to oxidative aging.

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Investigation of the corrosion protection behavior of natural montmorillonite clay/bitumen nanocomposite coatings

Cited by 35 publications

References 25 publications

Effect of Conducting Polyaniline/Graphene Nanosheet Content on the Corrosion Behavior of Zinc-Rich Epoxy Primers in 3.5% NaCl Solution

Effect of Conducting Polyaniline/Graphene Nanosheet Content on the Corrosion Behavior of Zinc-Rich Epoxy Primers in 3.5% NaCl Solution

SiAlON–epoxy nanocomposite coatings: Corrosion and wear behavior

Effect of Nanoadditives on Bitumen Aging Resistance: A Critical Review

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