Composite coating with synergistic effect of biomimetic epoxy thermoset morphology and incorporated superhydrophobic silica for corrosion protection

Ji, Wei-Fu; Li, C. W.; Wen-ying, Huang; Yu, Huiwen; Chen, R. D.; Yu, Ying; Yeh, Jui‐Ming; Tang, Wenshu; Su, Yu-Chieh

doi:10.3144/expresspolymlett.2016.88

Cited by 20 publications

(5 citation statements)

References 49 publications

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“…Figure S12 depicts the possible mechanism for corrosion protection of the sHMS–sMO composite coating. The hills and valleys on the surface of the hydrophobic coating trap air within them, which prevents the journey of corrosion media toward the metal substrate . The water absorption property of the coatings was also measured (by performing test based on the ASTM D570 standard), as shown in Figure S13.…”

Section: Resultsmentioning

confidence: 99%

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%

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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“…The peak at 2920 cm −1 was due to the C–H stretch of the polymer backbone, and the peaks at 1607 and 1456 cm −1 were used to characterize the DGEBA epoxy resin that corresponds to the aromatic ring stretching of C=C. The disappearance of a peak around 913 cm −1 for all the tested samples indicates the ring opening polymerization during crosslinking, which reflects the curing process [ 30 , 31 , 32 ]. Close observation of the FTIR spectra, as illustrated in Figure 4 , revealed that the characteristic peaks for all the samples were identical, as there were no changes in the peak value, suggesting that there was no new chemical bonding between the polymer and nanofillers [ 33 ].…”

Section: Resultsmentioning

confidence: 99%

Comparative Study of Three Carbon Additives: Carbon Nanotubes, Graphene, and Fullerene-C60, for Synthesizing Enhanced Polymer Nanocomposites

et al. 2020

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While nanoparticles from the carbon family have been incorporated effectively for polymer matrixes, there is no clear information available for understanding the impacts of the morphology of different carbon nanoparticles on the performance of carbon-based nanocomposites. Therefore, this study aimed to provide a comprehensive, comparative investigation to systematically assess the impacts of nanoparticles on the tribological, mechanical, and electrochemical properties of the epoxy coatings using three representative 0D, 1D, and 2D nanoparticles: Fullerene-C60 (C60), graphene nanoplatelets (GNPs), and carbon nanotubes (CNTs). The anti-corrosion performance of the nanocomposites in both the short and long term was characterized. The mechanical properties were examined by abrasion, adhesion, and tensile tests. Fourier-transform infrared spectroscopy (FTIR) was conducted to determine their chemical structures, while scanning electron microscopy (SEM) was used to determine their surface texture. The electrochemical impedance spectroscopy (EIS) results revealed that the coatings reinforced by C60 and GNP had better anti-corrosion performance than that of the CNT/epoxy samples. The incorporation of C60 and CNT led to a considerable improvement in tensile properties, while improved abrasion resistance was observed in all types of nanofiller/epoxy groups. C60-loaded composites exhibited a significant enhancement in tensile properties as compared to CNT or GNP composites.

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“…Fe 2+ → Fe 3+ + 1e - (4) O 2 (g) + 2H 2 O + 4e -→ 4OH - (5) 2Fe 2+ (aq) + O 2 (g) +2H 2 O → 2FeOOH + 2H + (6) The above equations show that sufficient amounts of H 2 O and O 2 are required for the formation of rust and for the dissolution of corrosion-causing components. If any of these reactions are prevented, corrosion can be inhibited, and the coating will be effective for corrosion prevention.…”

Section: Barrier Properties Of Pi Nanocomposite Filmsmentioning

confidence: 91%

“…Polymer/filler nanocomposites have received significant attention because of their excellent electrical, mechanical, thermal, barrier, and anticorrosion properties [1]. Nanofillers such as clay [2,3], silica [4,5], metallic oxide [6,7], boron nitride [8,9], ZrP [10,11], CNT [12] and alumina [13] have been conventionally incorporated within a polymer matrix or coated on the surface of the polymer film to improve their barrier and anticorrosion properties [14][15][16]. Recently, graphene, graphene oxide (GO), and reduced graphene oxide (rGO) have been demonstrated to have a strong anticorrosion ability because of their layered structure.…”

Section: Introductionmentioning

confidence: 99%

Transparency anticorrosion coatings prepared from alumina-covered graphene oxide/polyimide nanocomposites

Lai¹,

Huang²,

Tseng³

et al. 2019

Express Polym. Lett.

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In this study, a novel alumina-covered graphene oxide/polyimide (AlGO/PI) nanocomposite was developed as an anticorrosion coating material. The hydroxyl groups on GO reacted with aluminum isopropoxide via a sol-gel process to yield AlGO nanosheets. The characterization and structure were confirmed by Fourier transform infrared spectrometry, X-ray photoelectron spectroscopy, field emission scanning electron microscopy, and field emission transmission electron microscopy. Subsequently, GO and AlGO were incorporated into a PI matrix, leading to the formation of GO/PI and AlGO/PI nanocomposites. Well-dispersed AlGO nanosheets in the PI matrix acted as effective additives to enhance the water barrier properties of GO/PI (58 g/(m 2 •day)) and AlGO/PI (43 g/(m 2 •day)) coatings. Most importantly, the resultant AlGO/PI films exhibited excellent optical transparency (>75%) and anticorrosion properties. Electrochemical measurements of corrosion potential, polarization resistance, and corrosion current as well as electrochemical impedance spectroscopy confirmed that the AlGO/PI nanocomposites exhibited better anticorrosion properties than GO/PI nanocomposites. This is likely because the insulating layer of alumina on GO can isolate the charge transfer pathway between GO and the metal substrates, leading to improved anticorrosion behavior.

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Composite coating with synergistic effect of biomimetic epoxy thermoset morphology and incorporated superhydrophobic silica for corrosion protection

Cited by 20 publications

References 49 publications

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

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

Comparative Study of Three Carbon Additives: Carbon Nanotubes, Graphene, and Fullerene-C60, for Synthesizing Enhanced Polymer Nanocomposites

Transparency anticorrosion coatings prepared from alumina-covered graphene oxide/polyimide nanocomposites

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