A facile route of making silica nanoparticles-covered graphene oxide nanohybrids (SiO2-GO); fabrication of SiO2-GO/epoxy composite coating with superior barrier and corrosion protection performance

Ramezanzadeh, Bahram; Haeri, Zahra; Ramezanzadeh, Mohammad

doi:10.1016/j.cej.2016.06.028

Cited by 428 publications

(151 citation statements)

References 52 publications

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“…The first arc corresponds to the capacitive impedance of the coating, which is measured by the diameter of the semicircles and the second arc corresponds to the polarization resistance process at the steel surface beneath the coating layer [32]. During the curing and application processes, many defects, such as micro-porosities, cavities, as well as free volumes are generated in the coating, resulting in the corrosive electrolyte penetrating into the coating matrix and leading to coating's degeneration and reduction of barrier performance [33]. Figures 4 and 5 present the EIS spectra of pure epoxy coating and the epoxy coatings containing OTiO2(w) and iETiO2(w), the spectra were obtained during long-term immersion conditions.…”

Section: Resultsmentioning

confidence: 99%

Anti-Corrosive and Scale Inhibiting Polymer-Based Functional Coating with Internal and External Regulation of TiO2 Whiskers

Wang

et al. 2018

Coatings

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Abstract:A novel multi-functional carrier of mesoporous titanium dioxide whiskers (TiO 2 (w)) modified by ethylenediamine tetra (methylene phosphonic acid) (EDTMPA) and imidazoline was devised in epoxy coating to improve the anti-corrosion and scale inhibition properties of metal surface. Rigorous characterization using analytical techniques showed that a mesoporous structure was developed on the TiO 2 (w). EDTMPA and imidazoline were successfully grafted on the outer and inner surfaces of mesoporous TiO 2 (w) to synthesize iETiO 2 (w). The results demonstrated that the corrosion resistance of the final iETiO 2 (w) epoxy coating is 40 times higher than that of the conventional unmodified OTiO 2 (w) epoxy coating. The enhanced corrosion resistance of the iETiO 2 (w) functional coating is due to the chelation of the scaling cations by EDTMPA and electron sharing between imidazoline and Fe. Scale formation on the iETiO 2 (w) coating is 35 times lower than that on the unmodified OTiO 2 (w) epoxy coating. In addition, EDTMPA and imidazoline act synergistically in promoting the barrier property of mesoporous TiO 2 (w) in epoxy coating. It is believed that this novel, simple, and inexpensive route for fabricating functional surface protective coatings on various metallic materials will have a wide range of practical applications.

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Section: Resultsmentioning

confidence: 99%

Anti-Corrosive and Scale Inhibiting Polymer-Based Functional Coating with Internal and External Regulation of TiO2 Whiskers

Wang

et al. 2018

Coatings

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“…To illustrate the interactions between xonotlite nanowires and GO nanosheets, we made elaborate analysis on the Fourier Transform infrared (FTIR) spectra (Figure S11, Supporting Information). In the FTIR spectrum of xonotlite nanowires, the characteristic absorption peaks at 1203, 1079, 976, and 928 cm −1 were recorded, ascribed to the SiO vibration, SiOSi asymmetric vibration, SiOH vibration, and SiOSi symmetric vibration, respectively . As for the spectrum of GO/xonotlite composite, the abovementioned featured peaks belonging to xonotlite nanowires were red‐shifted obviously, for example, SiO vibration with 3 cm −1 red‐shifted to 1200 cm −1 and SiOSi asymmetric vibration with 8 cm −1 red‐shifted to 1071 cm −1 .…”

mentioning

confidence: 93%

Highly Tough Bioinspired Ternary Hydrogels Synergistically Reinforced by Graphene/Xonotlite Network

Qin

Zhang

et al. 2018

Small

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The application fields of hydrogels are often severely limited by their weak mechanical performance. It is therefore highly demanded to develop an effective strategy to fabricate mechanically strong hydrogels. Herein, a kind of bioinspired ternary hydrogel consisting of graphene oxide (GO) nanosheets, xonotlite nanowires, and polyacrylamide (PAM) is constructed under the synergy of hydrogen bonding-induced GO/xonotlite network and the penetrated PAM chain network. Benefiting from the effective energy dissipation mechanism caused by double-network structural design and the strong hydrogen bonding interaction between two nanobuilding blocks, the gel exhibits a high toughness of 22 MJ m at an elongation of 2750%. Even notched with 1/4 size, it still holds a large extensibility of 2180% its initial length. These high-performance hydrogels could be of great interest in the fields of tissue engineering and biomedical areas.

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“…However, the inherent shortcomings of epoxy materials (such as brittleness, weak crack propagation, and wear resistance) are restraint to its applications . A great deal of efforts has been made to improve the performance of epoxy matrix and its composites …”

Section: Introductionmentioning

confidence: 99%

Investigation of covalently grafted polyacrylate chains onto graphene oxide for epoxy composites with reinforced mechanical performance

Xie

Liu

et al. 2019

J of Applied Polymer Sci

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To enhance the dispersion and interfacial interaction of graphene–epoxy matrix, polyacrylate chains grafted graphene oxide (PA‐GO) was manufactured with A‐174 functionalized GO (A‐GO), methyl acrylate, and glycidyl methacrylate via free‐radical random copolymerization technique. Fourier transform infrared, thermogravimetric analysis, X‐ray photoelectron spectrum, Raman spectroscopy, X‐ray diffraction, transmission electron microscopy, and nuclear magnetic resonance were performed to investigate the structure of A‐GO and PA‐GO. Then, the PA‐GO was incorporated into epoxy resin via in situ solution intercalation dispersion method in order to form an interpenetrating network structure with epoxy resin. Field emission scanning electron microscope results indicate that the PA‐GO exhibits excellent dispersion and interfacial compatibility in the epoxy matrix. In compared with pure epoxy, the tensile strength and impact strength of the epoxy composite with 1 wt % PA‐GO were shifted from 62.78 ± 2.54 to 70.68 ± 2.02 MPa (about 12.6%) and 3.55 ± 0.41 to 4.98 ± 0.33 kJ m−2 (about 40.3%), respectively. Moreover, increased storage modulus is also observed in the dynamic mechanical analysis measurements compared with that of neat epoxy resin. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47842.

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A facile route of making silica nanoparticles-covered graphene oxide nanohybrids (SiO2-GO); fabrication of SiO2-GO/epoxy composite coating with superior barrier and corrosion protection performance

Cited by 428 publications

References 52 publications

Anti-Corrosive and Scale Inhibiting Polymer-Based Functional Coating with Internal and External Regulation of TiO2 Whiskers

Anti-Corrosive and Scale Inhibiting Polymer-Based Functional Coating with Internal and External Regulation of TiO2 Whiskers

Highly Tough Bioinspired Ternary Hydrogels Synergistically Reinforced by Graphene/Xonotlite Network

Investigation of covalently grafted polyacrylate chains onto graphene oxide for epoxy composites with reinforced mechanical performance

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