The role of micro/nano zeolites doped with zinc cations in the active protection of epoxy ester coating

Rassouli, Leili; Naderi, Reza; Mahdavain, Mohammad

doi:10.1016/j.apsusc.2017.06.245

Cited by 39 publications

(13 citation statements)

References 61 publications

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“…More recently, Rassouli and coworkers assessed the active corrosion protection performances of epoxy ester coating filled with zeolite nanoparticles with zinc [68] or combined organic and inorganic inhibitors [69]. An active anti-corrosion capability was observed for the zeolite filled paint, probably due to a progressive release of inhibitors, providing also a suitable synergistic corrosion protection on coupled Zn 2+ /mercaptobenzimidazole doped zeolite filled in the epoxy ester coating.…”

Section: Zeolite Paintingmentioning

confidence: 99%

A Brief Overview on the Anticorrosion Performances of Sol-Gel Zeolite Coatings

Calabrese

Proverbio

2019

Coatings

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Research activity concerning nanoporous zeolites has grown considerably in recent decades. The structural porosity of zeolites provides versatile functional properties such as molecular selectivity, ion and molecule storage capacity, high surface area, and pore volume which combined with excellent thermal and chemical stability can extend its application fields in several industrial sectors. In such a context, anti-corrosion zeolite coatings are an emerging technology able to offer a reliable high performing and environmental friendly alternative to conventional chromate-based protective coatings. In this article, a focused overview on anti-corrosion performances of sol-gel composite zeolite coatings is provided. The topic of this review is addressed to assess the barrier and self-healing properties of composite zeolite coating. Based on results available in the literature, a property–structure relationship of this class of composites is proposed summarizing, furthermore, the competing anti-corrosion active and passive protective mechanisms involved during coating degradation. Eventually, a brief summary and a future trend evaluation is also reported.

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Section: Zeolite Paintingmentioning

confidence: 99%

A Brief Overview on the Anticorrosion Performances of Sol-Gel Zeolite Coatings

Calabrese

Proverbio

2019

Coatings

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“…Considering the cathodic reaction of oxygen reduction in 3.5 wt % NaCl solution, Fe 2+ could arrive at the cathodic regions and react with hydroxide ions to form compounds such as Fe(OH) 2 to cover the cathodic sites and to decrease the rate of cathodic reaction . Besides, the anodic regions might be blocked by compact corrosion products, and it can have a decreasing effect on the anodic current density . Electron-rich groups have a high tendency to chelate with metallic cations such as iron(II) (resulting from the anodic reaction of steel) by sharing their lone pairs with the empty orbital of metallic cations, forming insoluble complexes on the anodic regions and decreasing the corrosion rate of steel. , …”

Section: Results and Discussionmentioning

confidence: 99%

Effect of Piperazine Functionalization of Mesoporous Silica Type SBA-15 on the Loading Efficiency of 2-Mercaptobenzothiazole Corrosion Inhibitor

Amini

Naderi

Mahdavian

et al. 2020

Ind. Eng. Chem. Res.

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This work intends to study the effect of functionalization of SBA-15 on the loading and release behaviors of 2-mercaptobenzothiazole (MBT). SBA-15 mesoporous silica was first synthesized and functionalized by a postgrafting method using a piperazine silane coupling agent. Then, SBA-15 was loaded with MBT as a corrosion inhibitor. Various characterizations demonstrated that MBT was successfully encapsulated into the interior nanochannels of nanocontainers. Furthermore, the release study results revealed that the modified sample liberated MBT up to 17 times of the unmodified sample. Assessment of the electrochemical behavior of steel in NaCl solution containing the released inhibiting moieties indicated that the presence of MBT resulted in the formation of a more compact layer of corrosion products with more fine particles. Moreover, the MBT molecules were found to be mixed-type corrosion inhibitors. It was found that functionalizing by piperazine improved the inhibition efficiency of MBTloaded samples. The trend and magnitude of impedance of specimens coated by the artificially scratched epoxy silicone revealed the role of the inhibitors desorbed from the functionalized SBA-15 in the polymer film active corrosion protection properties.

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“…passivate its surface. Also as Si/Al increases, hydrophobicity increases and reduces the diffusion of water and corrosive materials at the metal/coating interface (Ahmed et al, 2017;Dias et al, 2012;Heydarpour et al, 2014;Rassouli et al, 2017).…”

Section: Flowers Ofna-x Zeolitementioning

confidence: 99%

“…Other cost-effective strategies have been developed to improve the performance of the anticorrosive pigments. One of these strategies is the employment of more effective complementary cheap materials (Deyá, et al, 2001;Deyá, et al, 2002;Deyá, et al, 2003;Rassouli et al, 2017;Vetere et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

The anticorrosive performance of cost saving zeolites

El-Gawad

Ahmed

Selim

et al. 2019

PRT

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Purpose In recent years, zeolites have been highlighted as a new component in many industrial applications owing to their unique properties. The purpose of this study is to apply three prepared types of zeolites Na-X, Na-Y and hydroxysodalite (Na-HS) in anticorrosive paint formulations to be evaluated as a partial replacement to zinc phosphate in anticorrosive paint formulations to protect carbon steel. Design/methodology/approach The three types of zeolites were characterized using different instrumental analysis such as X-ray diffraction, scanning electron microscopy and X-ray fluorescence. Evaluation of zeolites was done using American society for material and testing. Then, they were incorporated in paint formulations based on medium oil-modified soya-bean dehydrated castor oil alkyd resin in the presence and absence of zinc phosphate. Their corrosion behavior was estimated using both immersion test and electrochemical impedance measurements in 3.5% NaCl. Findings Generally, the prepared zeolites exhibited good corrosion protection performance, but in presence of zinc phosphate the performance was better. This proves that, zeolites by themselves can resist corrosion but not efficiently, while in presence of zinc phosphate and owing to a synergistic effect between them, the performance was better. This opens the way to partial replacement of zinc phosphate with another safer and cheaper ingredient, which is zeolite. Practical implications The three zeolites can be applied in many industries besides the paint industry, such as reinforcing filler in rubber, plastics and ceramic composites, also can be applied in paper filling, paper coatings and electrical insulation. Originality/value The three zeolites are environmentally friendly materials that can partially replace other expensive anticorrosive pigments (e.g. zinc phosphate).

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The role of micro/nano zeolites doped with zinc cations in the active protection of epoxy ester coating

Cited by 39 publications

References 61 publications

A Brief Overview on the Anticorrosion Performances of Sol-Gel Zeolite Coatings

A Brief Overview on the Anticorrosion Performances of Sol-Gel Zeolite Coatings

Effect of Piperazine Functionalization of Mesoporous Silica Type SBA-15 on the Loading Efficiency of 2-Mercaptobenzothiazole Corrosion Inhibitor

The anticorrosive performance of cost saving zeolites

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