A Review on Corrosion, Adhesion, and Anti-Microbial Performance of Epoxy-Based Nanocomposite Coatings

Ananthapadmanabhan, S. S.; Mishra, Geetanjali; Parida, Smrutiranjan

doi:10.1007/978-981-16-9302-1_23

Cited by 2 publications

(3 citation statements)

References 86 publications

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“…According to these findings, the corrosion resistance of the epoxy composite coating has enhanced greatly with aHMS–sMO and sHMS–sMO fillers. This is predominantly due to the presence of well-distributed fillers on the coating matrix, which produced a tortuous and longer diffusion path for corrosive species. , Especially, the sHMS–sMO coating provided the best corrosion resistance, which was due to the hydrophobic properties of the coating, as shown in Table . The comparatively high hydrophobic character of the sHMS–sMO (CA = 96.4°) coating system, compared to that of aHMS–sMO (CA = 94.5°) and aHMS–MO (CA = 75.34°) coating systems, prevented wetting of the coating surface with the aqueous corrosive media and therefore delaying their penetration into the coating layer.…”

Section: Resultsmentioning

confidence: 99%

“…In addition to thermal shielding, coatings need to have strong barrier performance for long-term protection. Composite coatings are therefore a good choice for enhanced barrier performance by creating a highly tortuous diffusion path for the penetration of the water and other corrodent species . Here, we have demonstrated that by a suitable surface modification of the fillers the coatings can be made hydrophobic.…”

Section: Introductionmentioning

confidence: 84%

“…Composite coatings are therefore a good choice for enhanced barrier performance by creating a highly tortuous diffusion path for the penetration of the water and other corrodent species. 22 Here, we have demonstrated that by a suitable surface modification of the fillers the coatings can be made hydrophobic. The imparted hydrophobicity can act as a primary corrosion protection method, as the coating will prevent water wetting.…”

Section: Introductionmentioning

confidence: 91%

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Corrosion-Resistant Hydrophobic Thermal Barrier Composite Coating on Metal Strip: A New Dimension to Steel Strips for Roofing Segment

Ananthapadmanabhan,

Rout,

Chatterjee

et al. 2023

ACS Appl. Mater. Interfaces

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This study demonstrates a cost-effective, thin, multifunctional composite coating system with outstanding thermal insulation for thermal management and heat shield applications, such as roofs, as well as outstanding resistance to corrosion. The hydrophobic multifunctional epoxy composite coating systems were designed with surface-modified fillers to impart both reduced heat conduction and high infrared reflectance in a thin coating with a 65–100 μm dry film thickness (DFT). With a judicial combination of hollow microspheres (HMS) activated and modified with silica (sHMS) and stearic acid-modified TiO2 (sMO), the developed composite coating attained the highest thermal insulation property with a temperature drop of 21–31 °C at different distances below the coated panel, which is superior to the values of temperature drop reported earlier. The high solar reflectance of the composite coating in the near-infrared (NIR) region exceeds 72% with a low thermal conductivity of 0.178 W m–1 K–1. After 720 h of exposure in a 3.5 wt % NaCl solution, the composite coating revealed a corrosion protection efficiency of 99%. The work demonstrates that high solar reflectivity and low thermal conductivity must be active simultaneously to achieve superior thermal shielding in a thin coating on a metal. A careful selection of fillers and appropriate surface modifications ensures hydrophobicity and proper distribution of the fillers in the coating for a high barrier effect to prevent environmental deterioration. With these superior performance parameters, the developed composite coatings make an essential contribution to energy sustainability and the protection against environmental degradation.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 84%

Section: Introductionmentioning

confidence: 91%

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