Release of cerium dibutylphosphate corrosion inhibitors from highly filled epoxy coating systems

Soestbergen, van M Michiel; Baukh, V Viktor; Erich, Sjf Sebastiaan; Huinink, HP Henk; Adan, Ocg Olaf

doi:10.1016/j.porgcoat.2013.12.018

Cited by 44 publications

(22 citation statements)

References 40 publications

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“…Smart coatings have been synthesized and studied by several research groups [4,5]. Smart coatings can provide self-healing of the polymeric matrix [4,[6][7][8] or/and healing of the corrosion process [9][10][11][12][13][14]. Under specific stimulus conditions, the active agents stored into nano/microcontainers can be released to heal the coating or to inhibit corrosion activity.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and properties of polyelectrolyte multilayered microcapsules reinforced smart coatings

et al. 2019

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The present research work focuses on the synthesis, characterization and properties of novel polyelectrolyte multilayered microcapsules used as smart additives in organic coatings for corrosion protection of steel parts. Urea formaldehyde microcapsules encapsulated with linalyl acetate (UFMCs), sensitive to mechanical stimulus, were synthesized by in situ emulsion polymerization technique. In the next step, dodecylamine, working as a pH stimulus corrosion inhibitor, was loaded into layers of polyelectrolyte molecules, polyethylenimine (PEI) and sulfonated polyether ether ketone (SPEEK). These were applied layer-by-layer over the microcapsules to form inhibitor containing multilayered urea formaldehyde microcapsules (MLUFMCs). In the next step, MLUFMCs (5.0 wt%) and UFMCs (5.0 wt%) were thoroughly dispersed into the epoxy resin and coated on cleaned steel. A comparison of the structural, thermal and anticorrosive properties indicates that coatings modified with multilayered capsules (PMLSCs) demonstrate good thermal stability, improved self-healing characteristics and higher corrosion resistance compared to the coating modified with urea formaldehyde microcapsules. The improved properties of PMLSCs can be attributed to efficient release of the encapsulated self-healing agent and corrosion inhibitor from the MLUFMCs. Therefore, epoxy coatings modified with the novel multilayered capsules may be attractive for corrosion protection of steel parts used in oil and gas and related industries.

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Section: Introductionmentioning

confidence: 99%

Synthesis and properties of polyelectrolyte multilayered microcapsules reinforced smart coatings

et al. 2019

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“…molybdates, [11][12][13] silicates, 14 metavanadate, [15][16][17] permanganate, 18,19 phosphates, [19][20][21][22][23][24] borate 25,26 and tungstate. 16 Rare earth [27][28][29][30][31][32][33][34][35] and other cation compounds 11,13,20,[27][28][29][30][31][32][33][34][35] were also found to be effective. Organic coatings containing ion exchange inhibitors, 36,37 metals, 16,[38][39][40][41] and organic inhibitive compounds [42][43][44][45][46] w...…”

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confidence: 99%

Protective Film Formation on AA2024-T3 Aluminum Alloy by Leaching of Lithium Carbonate from an Organic Coating

Liu

Visser

Zhou

et al. 2015

J. Electrochem. Soc.

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An investigation into corrosion inhibition properties of a primer coating containing lithium carbonate as corrosion inhibitive pigment for AA2024 aluminum alloy was conducted. It was found that, during neutral salt spray exposure, a protective film of about 0.2 to 1.5 μm thickness formed within the area where an artificial defect was introduced by scribing through the coating to the base alloy. This film showed a multilayered structure consisting of a relatively compact layer near the alloy substrate, a porous middle layer and a columnar outer layer. The thicknesses of the layers varied, as a consequence of the difference in the local concentration of lithium species leaching from the primer coating. The presence of the film in the scribed area significantly reduced corrosion of the alloy, with little consumption of the metal substrate within the scribed area during neutral salt spray exposure. Furthermore, the presence of the protective film resulted in a significant increase of impedance modulus, measured after the salt spray exposure.

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“…This weight loss can be ascribed to the breakdown of long chains in the epoxy matrix. After 500 • C, the weight loss is because of other additives in the coating [14,15].…”

Section: Thermogravimetric Analysis Of Unmodified and Modified Ceo 2 Nanoparticlesmentioning

confidence: 99%

Cerium Dioxide Nanoparticles as Smart Carriers for Self-Healing Coatings

et al. 2020

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The utilization of self-healing cerium dioxide nanoparticles (CeO2), modified with organic corrosion inhibitors (dodecylamine (DDA) and n-methylthiourea (NMTU)), in epoxy coating is an efficient strategy for enhancing the protection of the epoxy coating and increasing its lifetime. Fourier transform infrared (FTIR) spectroscopy analysis was used to confirm the loading and presence of inhibitors in the nanoparticles. Thermal gravimetric analysis (TGA) measurement studies revealed the amount of 25% and 29.75% w/w for NMTU and DDA in the nanoparticles, respectively. The pH sensitive and self-release behavior of modified CeO2 nanoparticles is confirmed through UV-vis spectroscopy and Zeta potential. It was observed, through scanning electron microscopy (SEM), that a protective layer had been formed on the defect site separating the steel surface from the external environment and healed the artificially created scratch. This protective film played a vital role in the corrosion inhibition of steel by preventing the aggressiveness of Cl− in the solution. Electrochemical impedance spectroscopy (EIS) measurements exhibited the exceptional corrosion inhibition efficiency, reaching 99.8% and 95.7% for the modified coating with DDA and NMTU, respectively, after five days of immersion time.

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Release of cerium dibutylphosphate corrosion inhibitors from highly filled epoxy coating systems

Cited by 44 publications

References 40 publications

Synthesis and properties of polyelectrolyte multilayered microcapsules reinforced smart coatings

Synthesis and properties of polyelectrolyte multilayered microcapsules reinforced smart coatings

Protective Film Formation on AA2024-T3 Aluminum Alloy by Leaching of Lithium Carbonate from an Organic Coating

Cerium Dioxide Nanoparticles as Smart Carriers for Self-Healing Coatings

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