Fabrication of silica-decorated graphene oxide nanohybrids and the properties of composite epoxy coatings research

Ma, Yu; Di, Haihui; Yu, Zongxue; Liang, Ling; Liu, Liang; Yang, Piaoping; Zhang, Yangyong; Yin, Di

doi:10.1016/j.apsusc.2015.11.088

Cited by 154 publications

(51 citation statements)

References 49 publications

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“…0.7 wt%) leads to nonuniform dispersion of nanofiller in coating matrix and their agglomeration as well as cracks are clearly observed. Similar observations are previously reported by researches worked on polymer/ graphene nanocomposite coatings [22,[40][41][42][43].…”

Section: Characterization Of G-c 3 N 4 Nanosheetssupporting

confidence: 91%

Developing a new method for synthesizing amine functionalized g-C3N4 nanosheets for application as anti-corrosion nanofiller in epoxy coatings

Pourhashem¹,

Rashidi²,

Alaei³

et al. 2018

SN Appl. Sci.

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In this research, the effect of graphitic carbon nitride (g-C 3 N 4) on the corrosion protection performance of solvent-based epoxy coatings is investigated. The g-C 3 N 4 is synthesized by two-step condensation of melamine and is characterized by X-ray diffraction, Fourier transform infrared spectroscopy, transmission electron microscopy, and carbon-hydrogennitrogen elemental analysis. In order to enhance the dispersion of g-C 3 N 4 in epoxy coating, it is chemically functionalized with ethylenediamine vapor via a simple method. Further, epoxy coatings containing different amounts (0, 0.05, 0.1, 0.3, 0.5, and 0.7 wt%) of amine functionalized g-C 3 N 4 (AF g-C 3 N 4) are spray coated on mild steel substrate. The dispersion quality of nanofillers in coating matrix is studied by field emission scanning electron microscopy. The corrosion resistance of samples is investigated by electrochemical impedance spectroscopy. The results reveal the superior corrosion protection of nanocomposite coatings due to barrier performance of AF g-C 3 N 4. Meanwhile, epoxy coating containing 0.5 wt% AF g-C 3 N 4 shows the highest corrosion protection compared to pure epoxy sample. Keywords g-C 3 N 4 • Amine functionalization • Nanocomposite epoxy coating • Corrosion

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Section: Characterization Of G-c 3 N 4 Nanosheetssupporting

confidence: 91%

Developing a new method for synthesizing amine functionalized g-C3N4 nanosheets for application as anti-corrosion nanofiller in epoxy coatings

Pourhashem¹,

Rashidi²,

Alaei³

et al. 2018

SN Appl. Sci.

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“…Only a few smaller nanosheets incorporated in the coating. With the graphene concentration increasing, the large size graphene reunited each other and formed big pie shape due to the strong van der Waals forces and π-π bonding [36], and then covered on the surface of the coating (Figures 2 and 3). The mechanism that graphene improved the corrosion resistance of the coating can be explained as follows ( Figure 10): (1) the permeation path of the corrosive ions become more tortuous due to the prohibition of graphene with the ultra-dense network carbon atoms; (2) It is also used as inhibitor for protecting metals from contacting the corrosive media for a long time; (3) The graphene with the physical separation successfully embeds in the coatings and fills the pores and cracks, and reduces the flee pathway of corrosive medium.…”

Section: Electrochemical Behavior Of the Coatingsmentioning

confidence: 99%

“…Subsequently, the Al alloy is rapidly corroded (Figure 10a). However, the functionalized graphene with physical separation successfully incorporated in the coatings due to graphene with strong van der Waals forces and π-π stacking in the formation process of the coating [36,38]. The incorporation mainly includes two types-Graphene with smaller size embedded in the pores and cracks of the coating (Figure 10b).…”

Section: Electrochemical Behavior Of the Coatingsmentioning

confidence: 99%

Corrosion and Wear Behavior of PEO Coatings on D16T Aluminum Alloy with Different Concentrations of Graphene

Liu

Liao

et al. 2020

Coatings

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The effect of added graphene concentration on the microstructure, phase composition, corrosion-and wear-resistance of plasma electrolyte oxidation (PEO) coatings formed on D16T aluminum alloy in silicate electrolyte with different concentrations of graphene were investigated. The results show that the morphologies of the coatings with graphene were obviously different ascribed to the mode of graphene incorporated into the coating. The coatings consisted of mainly α-Al 2 O 3 , γ-Al 2 O 3 , and Al, which were divided into an outer porous layer and a dense inner layer. The thickness of the coatings increased non-linearly with graphene concentration. The corrosion resistance of the coatings with graphene was significantly improved. The wear resistance of the coatings was also greatly improved apart from the coating with 3 g/L graphene. The coating produced in the electrolyte with 2 g/L graphene exhibited the optimal comprehensive properties because graphene successfully incorporated into the coating via the pores and spread on the surface of the coating.Coatings 2020, 10, 249 2 of 20 are influenced by various process parameters such as the constituent and concentration of electrolytes, oxidation time, substrate, various electrical parameters, and additives [7,8]. The constituent and concentration of the additive play an important role in changing the structure, morphology, wear-and corrosion-resistance of the coatings among those factors. A large number of works about the PEO coatings incorporated particles or powders like TiO 2 [9], ZrO 2 [10], Fe micrograins [11], α-Al 2 O 3 [8], and so on were performed. Zhao et al. [7] studied the effect of graphene oxide on the corrosion resistance of the PEO coating on AZ31 magnesium alloy, and reported that the incorporated graphene oxide markedly decreased micropores and improved the corrosion resistance of AZ31 magnesium alloy. Sarbishei et al. [12] reported that alumina nanoparticles incorporated into the PEO coatings formed on a titanium substrate, reducing the density of the coating and the pores' size. The corrosion resistance was improved with the increase of the alumina concentration, and the coatings formed in the electrolyte with 10 g/L alumina nanoparticles showed the best properties. Fatimah [13] studied the structure and corrosion properties of the coatings formed on 6061 Al alloy through the dual incorporation of SiO 2 and ZrO 2 nanoparticles into the oxide layer and found the coatings with SiO 2 and ZrO 2 displaying the best corrosion resistance because they were used as micropores blocker and cracks filler. Yazdanl et al. [14] studied the tribological performance of graphene/carbon nanotube hybrid reinforced Al 2 O 3 , and it was determined that the coating with graphene nanoplatelets hybrid reinforced Al 2 O 3 composites displayed the best wear resistance. Hvizdos et al. [15] studied the tribological properties of Si 3 N 4 -graphene nanocomposites, and Si 3 N 4 -graphene nanocomposites owned better wear resistance was also confirmed. Belmonte et al. [16] pro...

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“…Ahmed et al [12] prepared core-shell ferrites/kaolin pigments that combine the properties of both and exhibit better corrosion protection properties. While, recently, some experts attempted to incorporate the nano-scale fillers to the coating and found that it could enhance the property of coating more effectively [13][14][15]. Palraj et al [16] compared and evaluated the performance of nano-silica and micro-silica epoxy composite coatings with the methods of salt spray test and EIS test, whose experimental results reflected that epoxy with nano-silica had better barrier properties.…”

Section: Introductionmentioning

confidence: 99%

Using 3-Isocyanatopropyltrimethoxysilane to Decorate Graphene Oxide with Nano-Titanium Dioxide for Enhancing the Anti-Corrosion Properties of Epoxy Coating

Song

Zhang

et al. 2020

Polymers

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In this paper, the graphene oxide loaded with nano titanium dioxide (TiO2–GO) was synthesized through 3-isocyanatopropyltrimethoxysilane (IPTMS) and characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction analysis (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), thermogravimetric analysis (TGA), and dispersion test. The results illustrated our modification was successful and TiO2–GO was transferred from hydrophilic to hydrophobic. That greatly enhanced the dispersity of TiO2–GO in epoxy through the observation of the coating morphology test. Moreover, the impact of TiO2–GO on anti-corrosion property in epoxy was investigated by Electrochemical Impedance Spectroscopy (EIS). Comparing to pristine particles including GO and TiO2, TiO2–GO could more significantly improve the resistance of corrosion with the help of IPTMS. Furthermore, the anti-corrosion mechanism of TiO2–GO in epoxy was tentatively proposed and discussed.

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Fabrication of silica-decorated graphene oxide nanohybrids and the properties of composite epoxy coatings research

Cited by 154 publications

References 49 publications

Developing a new method for synthesizing amine functionalized g-C3N4 nanosheets for application as anti-corrosion nanofiller in epoxy coatings

Developing a new method for synthesizing amine functionalized g-C3N4 nanosheets for application as anti-corrosion nanofiller in epoxy coatings

Corrosion and Wear Behavior of PEO Coatings on D16T Aluminum Alloy with Different Concentrations of Graphene

Using 3-Isocyanatopropyltrimethoxysilane to Decorate Graphene Oxide with Nano-Titanium Dioxide for Enhancing the Anti-Corrosion Properties of Epoxy Coating

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