CuO-anchored graphene oxide for enhancing mechanical and anticorrosion properties of epoxy coatings in cooling water systems

Chandraraj, Shanmuga Sundari; Xavier, Joseph Raj

doi:10.1016/j.matchemphys.2023.127953

Cited by 17 publications

(2 citation statements)

References 58 publications

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“…Because of this, aggressive saltwater species pierce the metal-to-water contact and aid in the breakdown of Fe into Fe 2+ ions. Prior research has demonstrated that the addition of metal oxide nanoparticles to the EP matrix improved their barrier characteristics for a protracted period of time. − The corrosion products were developed with fewer blisters on the X-cut for the EP-HfO 2 coatings on mild steel over a prolonged duration of immersion, in line with the earlier results. It is because HfO 2 nanoparticles were dispersed in an epoxy matrix, which improved the adhesive behavior to the metal contact.…”

Section: Resultssupporting

confidence: 71%

Flame Retardant and Anticorrosion Behavior of Multifunctional Epoxy Nanocomposite Coatings Containing Graphitic Carbon Nitride/Silanized HfO₂ Nanofillers for the Protection of Steel Surface in Automobile Industry

Xavier,

S P,

et al. 2023

ACS Chem. Health Saf.

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With the help of (3-trimethoxysilylpropyl) diethylenetriamine (TMSPETA), hafnium(IV) oxide (HfO2), an inorganic nanofiller, was modified. The resulting TMSPETA/HfO2 was then encased in graphitic carbon nitride (GCN) and placed within a pure epoxy resin (EP). The protective behavior of mild steel coated with epoxy in the presence of various concentrations of GCN/TMSPETA-HfO2 was studied using electrochemical methods in seawater environment. It was found that the addition of 0.6 wt % of GCN/TMSPETA-HfO2 to the epoxy resin produced maximum resistance. Hence, the optimum concentration of 0.6 wt % was utilized for further investigation. The PHRR and THR values for the GCN/TMSPETA-HfO2 significantly decreased by 73% and 57%, respectively, as compared to pure EP, showing that the material is more flame retardant. The results of salt spray tests showed that the inclusion of GCN/TMSPETA-HfO2 in the epoxy matrix enhanced the corrosion protection performance and reduced water absorption. EIS measurements showed that the epoxy-GCN/TMSPETA-HfO2 had increased coating resistance of 6.42E9 Ω·cm2 even after 320 h of exposure to seawater. According to SECM investigations, the coated steel with EP-GCN/TMSPETA-HfO2 nanocomposite has the lowest ferrous ion dissipation (1.0 I/nA). FE-SEM/EDX investigation revealed that silanized GCN was enhanced in the degradation products, resulting in a durable inert nanolayered covering. The newly created EP-GCN/TMSPETA-HfO2 coating was incredibly water-resistant, with a WCA of 165°. The TMSPETA-HfO2 wrapped in GCN has demonstrated strong adhesion and hardness in the epoxy substrate as well as good mechanical properties. An increased adhesive strength (19.1 MPa) was achieved for mild steel coated with EP-GCN/TMSPETA-HfO2 prior to being immersed in seawater. As a result, the coating has greater adhesive strength and can hold up even after a prolonged immersion. In light of this, the EP-GCN/TMSPETA-HfO2 nanocomposite may be used as a coating component in the automotive industry.

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Section: Resultssupporting

confidence: 71%

Flame Retardant and Anticorrosion Behavior of Multifunctional Epoxy Nanocomposite Coatings Containing Graphitic Carbon Nitride/Silanized HfO₂ Nanofillers for the Protection of Steel Surface in Automobile Industry

Xavier,

S P,

et al. 2023

ACS Chem. Health Saf.

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“…It is because of the sparse EP protecting layer on the very permeable film surface. 43,55,56 However, WCA of EP-CNT coat is 99 , higher compared to that for normal EP coating because CNT interactions with the EP matrix could affect how thin a layer of the polymer forms and reduce porosity. Due to the clustering of CNTs in EP, this coating is hydrophilic despite this.…”

Section: Analysis Of Hydrophobicitymentioning

confidence: 99%

Carbon nanotube‐based polymer nanocomposites: Evaluation of barrier, hydrophobic, and mechanical properties for aerospace applications

Xavier,

Sadagopan Pandian

2023

Polymer Engineering & Sci

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The anticorrosive and mechanical properties of carbon nanotubes (CNTs) in epoxy resin (EP) coatings have been improved by the integration of molybdenum disulfide (MoS2) and 3‐aminopropyltrimethoxysilane (APTMS) for surface modification based on CNTs. SEM/EDX, TEM, TGA/XRD, XPS, and XRD techniques were used to characterize the composites for the various formulations, including APTMS/CNTs, CNTs/MoS2, and APTMS/CNTs‐MoS2. By including APTMS/CNTs‐MoS2 composite, the EP coating exhibits improved anticorrosive and mechanical performance, as demonstrated by electrochemical methods and mechanical testing. Superior hydrophobic property of EP‐APTMS/CNTs‐MoS2 is confirmed by its WCA of 167°. Additionally, it was discovered that the EP‐APTMS/CNTs‐MoS2 had a resistance that was significantly larger (17,421 kΩ.cm2) than the plain epoxy (102 kΩ.cm2), and its hardness (1695 MPa), adhesion (19.7 MPa), and tensile (237 MPa) properties all are improved significantly. Therefore, the newly developed EP‐APTMS/CNTs‐MoS2 could act as the vital material for coating AA7475 aluminum alloy used in aerospace applications.

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Experimental and theoretical investigation of the influence of graphene oxide/nanozirconia on the mechanical and durability properties of geopolymer concrete

Nanthini,

Ganesan,

Xavier

2024

Polym. Bull.

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CuO-anchored graphene oxide for enhancing mechanical and anticorrosion properties of epoxy coatings in cooling water systems

Cited by 17 publications

References 58 publications

Flame Retardant and Anticorrosion Behavior of Multifunctional Epoxy Nanocomposite Coatings Containing Graphitic Carbon Nitride/Silanized HfO₂ Nanofillers for the Protection of Steel Surface in Automobile Industry

Flame Retardant and Anticorrosion Behavior of Multifunctional Epoxy Nanocomposite Coatings Containing Graphitic Carbon Nitride/Silanized HfO₂ Nanofillers for the Protection of Steel Surface in Automobile Industry

Carbon nanotube‐based polymer nanocomposites: Evaluation of barrier, hydrophobic, and mechanical properties for aerospace applications

Experimental and theoretical investigation of the influence of graphene oxide/nanozirconia on the mechanical and durability properties of geopolymer concrete

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CuO-anchored graphene oxide for enhancing mechanical and anticorrosion properties of epoxy coatings in cooling water systems

Cited by 17 publications

References 58 publications

Flame Retardant and Anticorrosion Behavior of Multifunctional Epoxy Nanocomposite Coatings Containing Graphitic Carbon Nitride/Silanized HfO2 Nanofillers for the Protection of Steel Surface in Automobile Industry

Flame Retardant and Anticorrosion Behavior of Multifunctional Epoxy Nanocomposite Coatings Containing Graphitic Carbon Nitride/Silanized HfO2 Nanofillers for the Protection of Steel Surface in Automobile Industry

Carbon nanotube‐based polymer nanocomposites: Evaluation of barrier, hydrophobic, and mechanical properties for aerospace applications

Experimental and theoretical investigation of the influence of graphene oxide/nanozirconia on the mechanical and durability properties of geopolymer concrete

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Flame Retardant and Anticorrosion Behavior of Multifunctional Epoxy Nanocomposite Coatings Containing Graphitic Carbon Nitride/Silanized HfO₂ Nanofillers for the Protection of Steel Surface in Automobile Industry

Flame Retardant and Anticorrosion Behavior of Multifunctional Epoxy Nanocomposite Coatings Containing Graphitic Carbon Nitride/Silanized HfO₂ Nanofillers for the Protection of Steel Surface in Automobile Industry