Influence of silane-based treatment on adherence and wet durability of fusion bonded epoxy/steel joints

Doidjo, M.R. Tchoquessi; Bélec, L.; Aragon, E.; Joliff, Y.; Lanarde, L.; Meyer, Michel; Bonnaudet, M.; Perrin, F.X.

doi:10.1016/j.porgcoat.2013.05.014

Cited by 25 publications

(6 citation statements)

References 33 publications

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“…They found that changing the surface chemistry has a profound effect on both the initial adhesion strength and durability of adhesion through improved interactions and chemical stability at the interface. Likewise, organosilane-based surface pre-treatments have been known already for some decades to promote adhesion through the promotion of covalent bonding across the interface [16,17].…”

Section: Introductionmentioning

confidence: 99%

Effect of surface roughness and chemistry on the adhesion and durability of a steel-epoxy adhesive interface

Dam

Abrahami

Yilmaz

et al. 2020

International Journal of Adhesion and Adhesives

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This work focuses on the effect of surface roughness, morphology and chemistry on the initial adhesion strength and corrosive de-adhesion properties of adhesive bonds. Steel surfaces are subjected to different surface pre-treatment methods such as mechanical abrasion, grit blasting, zirconium conversion treatment and silane treatment. Single-lap joint tests were performed to assess the initial bond strengths. Static wedge tests were used to study the loaded environmental ageing of joints and unloaded delamination of adhesive films from the steel surface was studied by means of scanning Kelvin probe (SKP). Experimental results indicate surface roughening plays an important role on the initial adhesion but a minor role in the durability of the bonded steel. The improved initial adhesion is mainly attributed to the increased interfacial bond area at higher surface roughness whereas complex morphology shows a more profound effect on both the initial adhesion and the durability of the interfacial adhesion. In the absence of complex texture, surfaces with altered chemistry by zirconium-or silane treatment exhibit a significant increase of the initial bonding strength and assessment of the interfacial delamination kinetics by SKP reveal that despite the absence of any surface topography, these surfaces prove to have higher resistance to delamination.

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Section: Introductionmentioning

confidence: 99%

Effect of surface roughness and chemistry on the adhesion and durability of a steel-epoxy adhesive interface

Dam

Abrahami

Yilmaz

et al. 2020

International Journal of Adhesion and Adhesives

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“…The displacement of the rupture from adhesive at steel/FBE interface (bare steel) to cohesive in FBE bulk indicated that the adherence resistance at the interface is higher than at the FBE. Therefore, compared to reference steel and organosilane-modified steel, the improvement in the bond strength of the FBE to the metal support may be associated with interfacial coupling, as previously described in the literature for aminosilanes [13,29]. Figures 13 and 14 show a schematic representation of the interactions between 3-GPTMS and 3-APTES-silane active surfaces, respectively, and FBE that can enhance …”

Section: Adhesion Testsmentioning

confidence: 76%

“…In addition, the bands within 3600-3200 and 975-865 cm −1 may be assigned to the stretching and bending vibrations of Si-OH, respectively, owing to the incomplete condensation of silanol formed during hydrolysis [13,27,29]. This absence of complete condensation of silanol groups is considered favorable for later adhesion of fusion bonded epoxy resins once it increases and facilitates the penetration of the polymeric resin at the interphase between the metal substrate and the organic polymer [13,29]. Moreover, characteristic peaks from organofunctional groups of silanes were also detected.…”

Section: Characterization Of Functionalized Steel Substratementioning

confidence: 99%

Fusion-bonded epoxy composite coatings on chemically functionalized API steel surfaces for potential deep-water petroleum exploration

et al. 2015

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Corrosion of oil and gas pipelines significantly reduces the service life of the pipelines, thus increasing costs, and more seriously, it can cause catastrophic environmental accidents. More recently, the exploitation of oil in ultra-deep seawater fields is facing new technological challenges in material selection owing to the extreme production conditions. Thus, the development of organic coatings as protective layers for steel pipelines is of crucial importance against highly corrosive environments. In this work, fusion bonded epoxy (FBE) coatings were deposited onto chemically functionalized carbon steel surfaces with organosilanes to investigate the potential applications in protection against corrosion and degradation in harsh marine environments. Carbon-steel API 5L X42 (American Petroleum Institute Standard grade) was chemically functionalized with two organosilanes, 3-APTES [(3-Aminopropyl)triethoxysilane], and 3-GPTMS [(3-Glycidyloxypropyl)trimethoxysilane], followed by the deposition of FBE composite coatings. The systems were extensively characterized with respect to each component as well as the steel-coating interface. The contact angle measurements and Fourier transform infrared spectroscopy (FTIR) results clearly indicated that the steel surface was effectively modified by the functional amine and glycidyl silane groups, leading to the formation of interfacial covalent bonds with increased hydrophobicity compared to bare steel surfaces. In addition, the morphological and chemical characterizations of FBE by scanning electron microscopy, atomic force microscopy, X-ray diffraction, and FTIR showed that it is composed of an epoxy-based organic matrix of bisphenol-A diglycidyl ether (DGEBA) reinforced with uniformly dispersed inorganic phases of calcium silicates and TiO 2 particles. Moreover, the chemical functionalization of the steel surfaces with amino and glycidyl silanes significantly altered the interfacial forces with the FBE coatings, resulting in higher adhesion strength for 3-APTES-modified steel compared to 3-GPTMS-steel; however, both mostly showed cohesive rupture mode in the FBE component.

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“…The quantification of the stresses is carried out in the pipe structure in order to evaluate the resistance of the materials in their elastic domain during the application of the external pressure. 30 The Von Mises criterion is used to identify the failure mechanisms of these materials.…”

Section: Resultsmentioning

confidence: 99%

Time-dependent response of thermoplastic matrix composite material under the cyclic loadings

Pagore

Kol

Betchewe

2021

Journal of Thermoplastic Composite Materials

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Under the service conditions, steel pipelines coated with the thermal protection system are subjected to cyclic loadings of axial tension and hydrostatic pressure. The finite element method generally used to simulate the behavior of composite structures under these loadings allows us to estimate the stresses generated in the system and to conclude on several origins of damage. However, for the framework of displacement or deformation analyses in such multilayer systems, these calculations do not allow a better prediction of their behavior. The methods used do not take sufficiently into account the characteristics of the different coating materials to predict their response in service conditions under cyclic loading. In this paper, we consider the viscosity of the thermoplastic materials used for the five layers coating system. Finite element calculations allow us to observe the areas of highest stress concentration at the interface with the steel pipe. Simulations allowed us to observe that the applied loads lead to increases in residual deformation in the thermoplastic matrix composite material. Cyclic tensile loading causes cracks in the matrix of the syntactic foam material. The study carried out here makes it possible to justify the origin of the failure mechanism in the composite material at the time of the installation of the pipelines which could limit the duration of their use in an offshore environment. The tensile failure of the syntactic foam considered as the polypropylene matrix composite material on which cyclic loads have been applied, is due to the stress level at a given temperature.

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Influence of silane-based treatment on adherence and wet durability of fusion bonded epoxy/steel joints

Cited by 25 publications

References 33 publications

Effect of surface roughness and chemistry on the adhesion and durability of a steel-epoxy adhesive interface

Effect of surface roughness and chemistry on the adhesion and durability of a steel-epoxy adhesive interface

Fusion-bonded epoxy composite coatings on chemically functionalized API steel surfaces for potential deep-water petroleum exploration

Time-dependent response of thermoplastic matrix composite material under the cyclic loadings

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