Preparation and characterization of a GPTMS/graphene coating on AA-2024 alloy

Dun, Yuchao; Zuo, Yu

doi:10.1016/j.apsusc.2017.04.116

Cited by 47 publications

(12 citation statements)

References 49 publications

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“…For MFA, the vibration absorption peak of Si–O–Si appears in the range of 1200–1000 cm −1 (Figure 4b). Moreover, the vibration absorption peak of Si–O appears at 780 cm −1 in the spectrum, indicating that SiO 2 is the essential component of MFA [24,25]. Figure 4c–f demonstrate that, as the concentration of MPTMS rises, the vibration absorption peaks of –CH 2, Si–O–Si and Si–O are gradually strengthen in the range of 3000–2800 cm −1 , at 1078 cm −1 , and at 780 cm −1 , respectively.…”

Section: Resultsmentioning

confidence: 99%

Effect of Silane Treatment on Mechanical Properties of Polyurethane/Mesoscopic Fly Ash Composites

Qin

et al. 2019

Polymers

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In view of the accidents such as rock mass breakage, roof fall and coal slide in coal mines, polyurethane/mesoscopic fly ash (PU/MFA) reinforcement materials were produced from polymethylene polyphenylene isocyanate (PAPI), the polyether polyol, flame retardant, and MFA using stannous octanate as a catalyst. 3-Glycidoxypropyltrimethoxysilane (GPTMS) was grafted on MFA surface, aiming to improve the mechanical properties of PU/MFA composites. The analyses of infrared spectroscopy and compression resistance reveal that the GPTMS can be successfully attached to the surface of MFA, and the optimum modification dosage of GPTMS to MFA is 2.5 wt % (weight percent). On this basis, the effect of GPTMS on the mechanical properties of PU/MFA reinforcement materials during the curing process was systematically investigated through a compression test, a fracture toughness test, a three-point bending test, a bond property test, and a dynamic mechanics analysis. The results show that the compression property, fracture toughness, maximum flexural strength, and bond strength of PU/MFA composites increase by 21.6%, 10.1%, 8.8%, and 19.3%, respectively, compared with the values before the modification. Furthermore, the analyses of scanning electron microscope and dynamic mechanics suggest that the coupling agent GPTMS can successfully improve the mechanical properties of PU/MFA composites because it eliminates the stress concentration and exerts a positive effect on the crosslink density and hardness of PU/MFA composites.

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Section: Resultsmentioning

confidence: 99%

Effect of Silane Treatment on Mechanical Properties of Polyurethane/Mesoscopic Fly Ash Composites

Qin

et al. 2019

Polymers

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“…Recently Dun and Zuo [70] prepared a γ-(2,3-epoxypropoxy) propyltrimethoxysilane/graphene (GPTMS/ rGO) coating on the AA-2024 aluminum alloy by immersing the aluminum alloy sample in a silane/graphene oxide solution. The graphene oxide was stacked layer by layer through the silanol groups.…”

Section: Silane Systems Composed Of Different Layersmentioning

confidence: 99%

Methods of Modifying Anticorrosive Protective Properties of Silane Films

Owczarek

2019

Acta Phys. Pol. A

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Due to the fact that it is highly toxic and carcinogenic, chromate-based surface treatment is restricted or gradually reduced in many countries. Among the alternatives to replace conventional chromate coatings, organosilanes show some important advantages such as competitive price and environmental compatibility. These substances inhibit the corrosion processes of metal surfaces but cannot offer long term-protection. For this reason, silane films have been modified by different procedures. In this paper, methods of improving the anticorrosive protective performance of silane films have been presented.

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“…15 Xue et al 11 reported that a silanefunctionalized GO composite coating with strong corrosion resistance, and adhesion was deposited on an AA2024 surface. Dun et al 16 achieved a silane-modified GO coating on the surface of an aluminum alloy by using GO and (2,3-epoxypropoxy)propyl trimethoxy silane (GPTMS, KH560). The prepared GO/silane composite coating had a thickness of approximately 20 μm, which greatly improved the anticorrosion performance of the aluminum alloy.…”

Section: Introductionmentioning

confidence: 99%

Corrosion protection of zinc by a silane conversion coating modified with graphene oxide

Lai

Chen

Che

et al. 2021

Surface & Interface Analysis

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Graphene possesses an adverse side effect that can aggravate metal corrosion, which impedes its applications in metal protection. This work aims to demonstrate a strategy to effectively inhibit the corrosion activity of graphene and, thus, apply graphene protection to a metal. A γ‐(2,3‐glycidoxypropyl)propyltrimethoxysilane/reduced graphene oxide (GPTMS/rGO) composite coating was prepared on a Zn surface by immersion in a GPTMS‐modified graphene oxide (GO) solution. The formation mechanism of the coating was investigated by means of scanning electron microscopy (SEM), Raman spectroscopy, Fourier transform infrared absorption (FTIR) spectroscopy, and X‐ray photoelectron spectroscopy (XPS). Afterward, the corrosion resistance of the coating was studied by electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization (PDP). The results show that a dense layer of the GPTMS/rGO coating covers the Zn surface during the immersion process with the GO reduction reaction. The thickness of the GPTMS/rGO composite coating is approximately 20 μm, which is much thicker than that of a GPTMS coating. Furthermore, the formed coating shows good corrosion resistance with an icorr value of 0.029 μA/cm2, and the protection efficiency of the coating reaches 99.94%. After a 12‐day immersion in a 0.6‐M NaCl solution, the coating maintains its high corrosion resistance.

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Preparation and characterization of a GPTMS/graphene coating on AA-2024 alloy

Cited by 47 publications

References 49 publications

Effect of Silane Treatment on Mechanical Properties of Polyurethane/Mesoscopic Fly Ash Composites

Effect of Silane Treatment on Mechanical Properties of Polyurethane/Mesoscopic Fly Ash Composites

Methods of Modifying Anticorrosive Protective Properties of Silane Films

Corrosion protection of zinc by a silane conversion coating modified with graphene oxide

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