Evaluation of Mechanical Properties and Corrosion Protection Performance of Surface Modified Nano-alumina Encapsulated Epoxy Coated Mild Steel

Janaki, G. Boomadevi; Xavier, Joseph Raj

doi:10.1007/s40735-019-0316-7

Cited by 34 publications

(10 citation statements)

References 29 publications

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“…Silane coupling agents typically have the form (XO) 3 SiY, where XO can be either methoxy (−OCH 3 ) or ethoxy (−OC 2 H 5 ) and Y is the functional group. , The hydrophobic characteristic of clays can be enhanced using silanes, which functionalize the clays and lower the hydrophilic surface area. , One of the most common modification procedures utilized by researchers is the grafting of silane onto clay surfaces. , Silanized nanoclays are widely used in a variety of applications using various polymers. , As halloysite nanoparticles are used as a nanofiller in the epoxy matrix, the anticorrosive and barrier properties of organic coatings are significantly improved when compared to pure epoxy coatings . The chemical interactions between nanoalumina and the polymer matrix were explored using imidazole modified nanoalumina . The (3-aminopropyl) triethoxysilane was used to promote MoO 3 nanoparticle dispersion in epoxy resin and, as a result, to improve the interaction of functional groups contained in silane with MoO 3 nanoparticles and epoxy resin .…”

Section: Introductionmentioning

confidence: 99%

“…24 The chemical interactions between nanoalumina and the polymer matrix were explored using imidazole modified nanoalumina. 25 The (3-aminopropyl) triethoxysilane was used to promote MoO 3 nanoparticle dispersion in epoxy resin and, as a result, to improve the interaction of functional groups contained in silane with MoO 3 nanoparticles and epoxy resin. 26 The indole was also employed to increase the barrier properties of polymer coatings by acting as a surface modifier for clay in the creation of new nanocomposites.…”

Section: Introductionmentioning

confidence: 99%

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Effects of Incorporating Silanized Nanoclay on the Barrier, Hydrophobic and Mechanical Properties of Epoxy Resin in Chloride Environment

Xavier

Vinodhini

Srinivasan

2022

Ind. Eng. Chem. Res.

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propyl methacrylate (TMSPMA) is used to coat the surface of halloysite nanoparticles, resulting in a less hydrophilic clay surface and improved nanoparticle dispersibility in the epoxy polymer (EP). The efficiency of epoxy/clay nanocomposites in terms of thermal, mechanical, and barrier properties was studied. The results of XRD, SEM/EDX, TEM, and TGA all show that halloysite nanoparticles are silanized. EP-TMSPMA/clay coatings have a high degree of hydrophobicity (WCA: 139°) and surface roughness. Electrochemical techniques were used to investigate the corrosion resistance of coated steel substrates. The coating resistance of the EP-TMSPMA/clay nanocomposite coating was found to be over 62.98% higher than the EP coating. Even after 15 days of immersion, electrochemical tests demonstrate that EP-TMSPMA/clay has a higher coating resistance (R coat ) than plain epoxy coated mild steel. At 15 days of immersion, SECM data show that the dissipation of Fe in the EP-TMSPMA/clay coated substrate is significantly lower than the pure epoxy coated substrate. Furthermore, mechanical testing (hardness, adhesion, and tensile strength) revealed that the epoxy/silane/clay nanocomposites had improved mechanical properties. Silanized clay including epoxy nanocomposites has excellent barrier, hydrophobic, and mechanical qualities, as well as excellent oxygen and water repellent capabilities. EP-TMSPMA/clay has the best characteristics of all of the coated nanocomposites examined. Because clay/silanes are environmentally safe, this form of coating could be used as a viable coating material for industrial purposes.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of Incorporating Silanized Nanoclay on the Barrier, Hydrophobic and Mechanical Properties of Epoxy Resin in Chloride Environment

Xavier

Vinodhini

Srinivasan

2022

Ind. Eng. Chem. Res.

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“…Epoxy resin is one of the widely used polymers utilized to protect mild steel due to its strong adhesion, good chemical resistance, and low shrinkage 4,9,10 . To get benefit from its good properties, inorganic particles may improve the stiffness and other properties of the epoxy coatings 11 . Many studies have attempted to improve the toughness of epoxy and other polymers by reinforcing them with micro and nanofiller to promote extrinsic toughening procedures [12][13][14][15][16][17] .…”

Section: Introductionmentioning

confidence: 99%

Enhancement of Barrier and Mechanical Performance of Steel Coated with Epoxy Filled with Micron and Nano Alumina Fillers

et al. 2022

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Steel is an essential part of our life as it is used in wide applications as food equipment and heavy construction. The polymeric coating prevents the deterioration of the properties of metals due to rust and corrosion. This study investigated a reinforced polymeric coating to steel for enhancing barrier and mechanical properties. A comparison between different configurations of double-layered polymeric coatings was attained. The results showed that a maximum enhancement of 16.7%, 18.9%, 32.6%, 8.5%, and 5.7% in tensile strength, tensile strain, toughness, flexural strength, and flexural strain, respectively were achieved with a coating of epoxy filled with 1wt% Al 2 O 3 microparticles before 1wt% Al 2 O 3 nanoparticles on both sides as compared with pure epoxy coating. Adding micro/nanoparticles to epoxy coating enhanced the barrier properties of the coated steel against salt solution and citric acid environment as compared to pure epoxy coated steel.

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“…The corrosion of metal is considered one of the vital issues for steel structures when these structures are subjected to corrosion 1 . Steel has high mechanical strength with low-cost fabrication.…”

Section: Introductionmentioning

confidence: 99%

“…The protective organic coating as an epoxy coating to metal is characterized by its excellent weather ability 4 . Protected epoxy coating has attracted great attention in wet environments due to its very good toughness, durability, and adhesion to metal substrates 1 . However, the highly cross-linking density and the barrier behavior of the epoxy coating can be undesirably affected when exposed to corrosion.…”

Section: Introductionmentioning

confidence: 99%

Characterization of steel lined with multilayer micro/nano-polymeric composites

Megahed

El-Aziz

Сабер

2022

Sci Rep

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This work studied comparison of the mechanical and barrier resistance properties between different structures of three multilayers polymeric coating on each side of the steel coupons. Epoxy filled with 1 wt%, 2 wt%, and 3 wt% micron or nano-sized alumina (Al2O3) particles represented the coating layers to steel on both sides. Barrier resistance was performed by immersing the coated steel specimens in salt solution and in a citric acid medium. Adding alumina (Al2O3) particles in micron and nano size to epoxy coatings improved the barrier resistance, tensile, and hardness under dry and wet conditions as compared to pure epoxy coating. Further increases in Al2O3 micro/nanoparticles cause deterioration in tensile strength and barrier resistance. The steel lined with epoxy filled with 1 wt% Al2O3 nanoparticles has a maximum tensile strength of 299.5 MPa and 280.9 MPa under dry and wet conditions, respectively. However, the steel lined with epoxy filled with 1 wt% Al2O3 microparticles has a tensile strength of 296.5 MPa and 275.4 MPa under dry and wet conditions, respectively. Good properties were observed with stepwise graded micro/nanocomposite coatings. The steel lined with epoxy filled with 3 wt% Al2O3 nanoparticles has maximum hardness of 46 HV and 40 HV under dry and wet conditions, respectively.

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Evaluation of Mechanical Properties and Corrosion Protection Performance of Surface Modified Nano-alumina Encapsulated Epoxy Coated Mild Steel

Cited by 34 publications

References 29 publications

Effects of Incorporating Silanized Nanoclay on the Barrier, Hydrophobic and Mechanical Properties of Epoxy Resin in Chloride Environment

Effects of Incorporating Silanized Nanoclay on the Barrier, Hydrophobic and Mechanical Properties of Epoxy Resin in Chloride Environment

Enhancement of Barrier and Mechanical Performance of Steel Coated with Epoxy Filled with Micron and Nano Alumina Fillers

Characterization of steel lined with multilayer micro/nano-polymeric composites

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