Hierarchically self-reporting and self-healing photothermal responsive coatings towards smart corrosion protection

Cheng, Li; Liu, Chengbao; Zhao, Haichao; Wang, Liping

doi:10.1016/j.cej.2023.143463

Cited by 27 publications

(6 citation statements)

References 68 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Before conducting the EIS test, the OCP value is monitored until it reaches a steady state Figure a shows an example of the OCP curves from the initial test.…”

Section: Resultsmentioning

confidence: 99%

Gum Arabic-Assisted Polyaniline Nanofillers for Improving Anticorrosion Performance of Waterborne Epoxy Coatings

Shao

Cao

Chen

et al. 2023

ACS Appl. Nano Mater.

View full text Add to dashboard Cite

The agglomeration of polyaniline (PANI) nanofillers in waterborne resins substantially reduces the long-term corrosion resistance of the resins. In this study, we use gum arabic (GA), a biological macromolecule, as a green stabilizer to prepare aqueous dispersions of GA−PANI nanofillers via chemical oxidative polymerization. The highly dispersed GA−PANI nanofillers are incorporated into waterborne epoxy (WEP) matrix and sprayed onto Q235 steel surface. The results show that the GA− PANI nanofillers exhibit excellent dispersion, stability, and compatibility in WEP, as evidenced through transmission electron microscopy and scanning electron microscopy of the crosssectional morphology, water-absorption tests, and coating adhesion tests. An electrochemical test indicates that the 3.0 wt % GA− PANI/WEP coating displays remarkable corrosion resistance, with the value of impedance modulus in the low-frequency region (| Z| 0.01Hz ) remaining at 3.372 × 10 7 Ω cm 2 after 60 days of immersion in a 3.5 wt % NaCl solution. This value is almost 1 order of magnitude higher than that of WEP. An X-ray photoelectron spectroscopy test confirms the presence of a corrosion product component on the coating/steel interface. Moreover, the GA−PANI nanofillers extend the penetration route of corrosive species and provide favorable adhesion and anodic protection.

show abstract

“…Before conducting the EIS test, the OCP value is monitored until it reaches a steady state Figure a shows an example of the OCP curves from the initial test.…”

Section: Resultsmentioning

confidence: 99%

Gum Arabic-Assisted Polyaniline Nanofillers for Improving Anticorrosion Performance of Waterborne Epoxy Coatings

Shao

Cao

Chen

et al. 2023

ACS Appl. Nano Mater.

View full text Add to dashboard Cite

show abstract

“…However, merely micropore-sealing or warping the diffusion path for corrosive species can hardly solve the long-lasting issue of EP coatings. Recent advancements have introduced nanocontainers that can accommodate anticorrosive constituents (e.g., corrosion inhibitors), serving as intelligent fillers to render active protection or self-healing functionalities to composite coatings . Examples include metal–organic frameworks, two-dimensional (2D) transition-metal carbonitrides, and graphitic carbon nitride (g-C 3 N 4 ), which have been developed to accommodate corrosion inhibitors.…”

Section: Introductionmentioning

confidence: 99%

Protective and Flame-Retardant Bifunctional Epoxy-Based Nanocomposite Coating by Intercomponent Synergy between Modified CaAl-LDH and rGO

Murtaza,

Zhao,

Tabish

et al. 2024

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Extensive utilization in various settings poses extra requirements of coatings beyond just anticorrosion properties. Herein, 8-hydroxyquinoline (8-HQ) intercalated CaAl-based layered double hydroxide (CaAl-8HQ-LDH) was loaded on reduced GO (rGO) through a one-pot hydrothermal reaction, which was employed as the nanofiller endowing the epoxy (EP/ CaAl-8HQ LDH@rGO) with excellent flame-retardancy while ensuring efficient protection for mild steel. Results of electrochemical impedance spectroscopy (EIS) demonstrated the durability of the EP/CaAl-8HQ LDH@rGO-coated specimen, with the impedance at the lowest frequency (|Z| 0.01Hz ) maintained as 1.84 × 10 10 Ω cm 2 after 120 days of immersion in a 3.5 wt % NaCl solution. Even for the scratched EP/CaAl-8HQ LDH@rGO system, only a slight decline in |Z| 0.01Hz was observed during 180 h of exposure to the NaCl solution, indicating a self-healing feature supported by salt spray tests. UL-94 burning tests revealed the V-0 rating for EP/CaAl-8HQ LDH@rGO with improved thermostability. Strong physical barrier from two-dimensional rGO and the release of 8-HQ from LDH interlayers accounted for the anticorrosive and self-healing properties. However, O 2 -concentration dilution and charring-layer promotion governed the flameretardant behavior of the nanocomposite coating. The intercomponent synergy of nanofillers achieved in this work may provide a useful reference for designing multifunctional coatings.

show abstract

“…Therefore, the development of mechanical response materials that can autonomously self-report damage over time has attracted increasing attention in recent years. [50][51][52][53][54] For example, Adelung et al used a mechanochromic spiropyran additive in a polythiourethane matrix. Spiropyran moieties can rapidly self-report the damage degree of glassfiber reinforced polymer composite (GFRPC) through their force-induced covalent bond fracture.…”

Section: Introductionmentioning

confidence: 99%

Adjusting the dynamic and mechanochromic properties of aromatic disulfide epoxy vitrimers by unsaturation of epoxy monomers

Chen,

Zhou,

Zhang

et al. 2024

J of Applied Polymer Sci

View full text Add to dashboard Cite

Disulfide‐contained vitrimers that possess unprecedented functions, such as reprocessing and self‐healing, are considered to be one of the most promising materials since they also exhibit mechanochromic behaviors. A few reports have given the phenomenon of mechanochromism, but the relationship between their structure and mechanochromic behavior needed to further research. Herein, three aromatic disulfide‐contained epoxy vitrimers with different degree of unsaturation are prepared by changing the epoxy monomer. The effect of network structure on the dynamic and mechanochromic properties are investigated. With increasing the degree of unsaturation from the aliphatic to aromatic epoxy vitrimers, the Tg‐value increases and the chain mobility decreases, so the aliphatic epoxy vitrimers shows the lowest activation energy, the lowest temperature of malleability Tv, and the shortest relaxation times. In addition, these epoxy vitrimers all showes reversible mechanochromic behaviors due to the generation and coupling of sulfenyl radicals, which can be accelerated by the high temperature and solvent. Meanwhile, the epoxy structure has a great influence on the mechanochromic behavior, including the absorption wavelength and fading kinetics of grinding powders. These results can be utilized to design desired vitrimer materials for various applications that requires both the intrinsically self‐report damage and the dynamic properties such as recycling.

show abstract

Hierarchically self-reporting and self-healing photothermal responsive coatings towards smart corrosion protection

Cited by 27 publications

References 68 publications

Gum Arabic-Assisted Polyaniline Nanofillers for Improving Anticorrosion Performance of Waterborne Epoxy Coatings

Gum Arabic-Assisted Polyaniline Nanofillers for Improving Anticorrosion Performance of Waterborne Epoxy Coatings

Protective and Flame-Retardant Bifunctional Epoxy-Based Nanocomposite Coating by Intercomponent Synergy between Modified CaAl-LDH and rGO

Adjusting the dynamic and mechanochromic properties of aromatic disulfide epoxy vitrimers by unsaturation of epoxy monomers

Contact Info

Product

Resources

About