Epoxy embedded with TiO 2 nanogel composites as promising self-healing organic coatings of steel

Atta, Ayman M.; Al‐Lohedan, Hamad A.; El-Saeed, Ashraf M.; Al-Shafey, Hussin I.; Wahby, Mohamed H.

doi:10.1016/j.porgcoat.2017.01.009

Cited by 37 publications

(9 citation statements)

References 46 publications

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“…Therefore, the cracks autonomously heal, similar to intrinsic welding, and prevent the corrosive media from reaching the underlying substrate. This process can clearly justify the self-healing mechanism of TiO 2 NC when exposed to humidity and salt [34] , [59] . The coated samples were prepared in three different weight percentages at 1, 2, and 4 wt% of the NTFM/AAm/AMPS and incorporated into the epoxy matrix.…”

Section: Resultsmentioning

confidence: 54%

“…This would prevent the corrosive media to reach the underlying substrate [57] . This process, also known as the defect healing mechanism, can clearly justify the self-healing mechanism of the TiO 2 NC when exposed to humidity and salt [34] , [58] , [59] , [60] . Comparing the Nyquist plot results of the epoxy coating containing TiO 2 NC with other mechanisms, such as the release of healing agents, the higher anti-corrosion property of this method is revealed [13] .…”

Section: Resultsmentioning

confidence: 75%

“…Although the approach showed a promising performance, there is a gap in the research about the quantitative assessment of the corrosion and self-healing efficiency. There are mostly feasibility studies on this approach and they have been evaluated by qualitative assessment [34] , [35] .…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Synthesis of TiO2 nanogel composite for highly efficient self-healing epoxy coating

Ghomi

Khorasani

Koochaki

et al. 2023

Journal of Advanced Research

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Section: Resultsmentioning

confidence: 54%

Section: Resultsmentioning

confidence: 75%

See 1 more Smart Citation

Synthesis of TiO2 nanogel composite for highly efficient self-healing epoxy coating

Ghomi

Khorasani

Koochaki

et al. 2023

Journal of Advanced Research

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“…In the first and last stages, the curves are relatively flat, attributing to the water loss and appreciable oxidation at temperatures below 200°C and above 450°C respectively 24 . At the second stage (200–450°C), epoxy resin decomposes, showing a rapid descent curve 25 . Notably, the thermal stability of MMA/NBR/GO coating is higher with respect to the neat epoxy resin coating due to the decomposition, implying that MMA/NBR/GO can enhance the thermal stability of the epoxy resin, and the optimal content of MMA/NBR/GO is 0.5 wt% 26 .…”

Section: Resultsmentioning

confidence: 99%

Effect of methyl methacrylate/nitrile rubber/graphene oxide on the anticorrosion and mechanical properties of epoxy‐based coating

Wan

Wang²,

Wang³

et al. 2023

J of Applied Polymer Sci

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Graphene oxide has a wide application prospect as filler due to its excellent physical blocking, coating reinforcement, and cathodic protection properties. However, graphene oxide is highly susceptible to agglomerative reunions.Three types of anti-corrosion coatings were prepared on 5083 Al alloy by a simple smearing method. The coatings are based on neat epoxy resin by introducing different amounts of graphene oxide, methyl methacrylate/nitrile rubber, and methyl methacrylate/nitrile rubber/ graphene oxide fillers. Thermogravimetric analysis (TGA) results show that methyl methacrylate/nitrile rubber/graphene oxide fillers enhance the thermal stability of the epoxy resin-based coatings. The SEM morphology shows the well-dispersed methyl methacrylate/nitrile rubber/graphene oxide in the coating. The 2 and 1 wt% methyl methacrylate/nitrile rubber/graphene oxide coating exhibits excellent mechanical properties and outstanding anti-corrosion properties, respectively. At 1 wt%, the OCP of the coating is À0.21 V. Additionally, the coating exhibits great anti-corrosion performance after immersion for 196 h. Compared to the pristine coating and methyl methacrylate/nitrile rubber coatings, the methyl methacrylate/nitrile rubber/graphene oxide coatings show better thermal stability, mechanical properties and anti-corrosion properties. The methyl methacrylate/nitrile rubber fillers degrade the thermal stability and anti-corrosion protection and do not affect mechanical properties. Compared with graphene oxide coatings, the surface of methyl methacrylate/nitrile rubber/graphene oxide coatings is smoother with better dispersion, possessing better mechanical and anti-corrosion properties though only a fewer amounts of graphene oxide were filled in epoxy resin. The better corrosion resistance of the coating can be attributed to the synergistic effect of a physical barrier and a coulomb block.

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“…1,2 Incorporating nanoparticles in a polymer matrix not only increases the thermal stability they also improve anticorrosive properties by increasing the path length of corrosive species. 3 Among different nanoparticles, TiO 2 NPs have been used widely because they are non- toxic, cheap and easy to prepare. 4 TiO 2 NPs with their wide band gap make them useful for UV protection.…”

Section: Introductionmentioning

confidence: 99%

Corrosion protection performance of titania nanoparticles filled poly(4-methyl-5-vinylthiazole) applied on mild steel in 3.5% sodium chloride solution

Pugazhenthi¹,

Ghouse²

2020

Journal of Plastic Film & Sheeting

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Mild steel materials have wide applications in marine construction, because they are low cost, available and easy to handle. However, they have to be protected from corrosive media by coating with polymer hybrid materials. This paper focuses on the anticorrosive properties of poly(4-methyl-5-vinylthiazole) PVTZ coatings on mild steel. Further the coating resistance is enhanced by incorporating Titania Nano particles (TiO2NPs). The nanoparticles were evaluated using X-ray diffraction studies (XRD) and transmission electron microscopy (TEM). PVTZ and its TiO2 nanocomposite were coated on mild steel. Their anticorrosive behavior was analyzed by potentiodynamic polarization and electrochemical impedance spectroscopy in 3.5% (w/v) NaCl.

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Epoxy embedded with TiO 2 nanogel composites as promising self-healing organic coatings of steel

Cited by 37 publications

References 46 publications

Synthesis of TiO2 nanogel composite for highly efficient self-healing epoxy coating

Synthesis of TiO2 nanogel composite for highly efficient self-healing epoxy coating

Effect of methyl methacrylate/nitrile rubber/graphene oxide on the anticorrosion and mechanical properties of epoxy‐based coating

Corrosion protection performance of titania nanoparticles filled poly(4-methyl-5-vinylthiazole) applied on mild steel in 3.5% sodium chloride solution

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