Measurement of the practical adhesion of paint coatings to metallic sheets by the pull-off and three-point flexure tests

Roche, A.; Dole, Patrice; Bouzziri, M.

doi:10.1163/156856194x00366

Cited by 36 publications

(36 citation statements)

References 6 publications

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“…The mould was made of RTV-501 (Rhone Poulenc, Lyon, France). The adhesive block formed had dimensions 25 Â 5 Â 4 mm 3 [35]. Either the ultimate load (F max ) or the ultimate displacement (d max ) were used to evaluate the practical adhesion of DGEBA-IPDA polymer on metallic substrates (see Figure 1).…”

Section: Experimental Materialsmentioning

confidence: 99%

The Role of the Residual Stresses of the Epoxy-Aluminum Interphase on the Interfacial Fracture Toughness

Roche

Aufray

Bouchet

2006

The Journal of Adhesion

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When an epoxy-diamine system (DGEBA-IPDA) is applied onto aluminum alloy (5754) and cured, an interphase having chemical, physical, and mechanical properties quite different from those of the bulk polymer is created between the substrate and the part of the polymer having bulk properties. To get a better understanding of the role of the interphase on the interfacial fracture toughness either a tri-layer (bulk coating=interphase=substrate) or a bi-layer model (bulk coating=substrate) were used for quantitative determination of the critical strain energy release rate (noted G c ). Indeed, as the interphase formation results from both dissolution and diffusion phenomena, we were able to control the interphase formation within coated systems by controlling the liquid-solid contact time and then to make tri-or bi-layered systems. The particularity of models used is to consider residual stress profiles developed within the entire system leading to an intrinsic parameter representing the work of adhesion between the polymer and the metallic substrate. The aim of this publication is to clearly establish the role of the interphase mechanical properties, such as Young's modulus and residual stress on the interfacial fracture toughness. Results are presented and discussed for three different aluminum surface treatments (chemical etching, degreasing and anodizing).

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Section: Experimental Materialsmentioning

confidence: 99%

The Role of the Residual Stresses of the Epoxy-Aluminum Interphase on the Interfacial Fracture Toughness

Roche

Aufray

Bouchet

2006

The Journal of Adhesion

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“…In addition, the pull-off test was not effective because the rupture was not at the metal=polymer interface so the test cannot be considered as a ''true'' adherence test [38]. Finally, it is not possible to differentiate between the failure initiation and the failure propagation zone on the samples: for example, this test was not suitable for a painstaking adherence study [39].…”

Section: àmentioning

confidence: 99%

“…In the present work, adherence between metal substrate and primer was determined by a three-point flexure test measurement, previously developed by Roche et al [38][39][40][41]. The three-point flexure test provides a parameter that characterizes the HDG=primer adherence and allowed an easily recognizable failure initiation site to be observed.…”

Section: àmentioning

confidence: 99%

“…The samples were degreased with ethanol and ultrasonicated in an ethanol bath for 10 minutes. Then, they were placed in a silicone mould between two clamping plates, as described previously [38][39][40]. After drying, the assembly was closed and a 5 mL constant quantity of liquid stoichiometric epoxy-amine ratio polymer mixture (Dow Chemical, Midland, Michigan, U.S.A. -DGEBA DER TM 332 and DETA from Aldrich, St. Louis, Missouri, U.S.A, respectively) was injected into the mould.…”

Section: Adherence Measurementsmentioning

confidence: 99%

“…Measurements followed the ISO 14679-1997 Standard, and the standardized three-point flexure test was previously described from a mechanical point of view [38][39][40][41]45]. An Instron 1 3367 tensile testing machine (Norwood, Massachusetts, USA), fitted with a 5000 N full-scale load cell with a sensitivity of AE 0.5% of the measured values, and a cross-head displacement speed of 0.5 mm-min À1 (AE0.5%) was used in its three-point flexure configuration (Fig.…”

Section: Adherence Measurementsmentioning

confidence: 99%

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Adherence Measurements and Corrosion Resistance in Primer/Hot-Dip Galvanized Steel Systems

Floch

Doleyres

Amand

et al. 2013

The Journal of Adhesion

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OATAO is an open access repository that collects the work of Toulouse researchers and makes it freely available over the web where possible. This paper focuses on the adherence during ageing of a primer (made of polyester resins crosslinked with melamine) applied onto hot-dip galvanized (HDG) steel for coil coating application and its influence on corrosion protection. A chromium-free surface treatment, composed of fluorotitanic acid, phosphoric acid, manganese phosphate, and vinylphenol was applied on the HDG steel to obtain high corrosion resistance and high adherence of a polyester and melamine primer. The influence of the manganese phosphate on the corrosion and adherence was investigated. To measure the adherence between the metal and the primer, a three-point flexure test was set up. The adherence was then linked with corrosion resistance during ageing, using electrochemical impedance spectroscopy.

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Mechanical Interphases in Adhesive Joints: Characterisation Methods and FE‐Simulations

Possart

Steinmann

2018

Adhesive Joints

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Measurement of the practical adhesion of paint coatings to metallic sheets by the pull-off and three-point flexure tests

Cited by 36 publications

References 6 publications

The Role of the Residual Stresses of the Epoxy-Aluminum Interphase on the Interfacial Fracture Toughness

The Role of the Residual Stresses of the Epoxy-Aluminum Interphase on the Interfacial Fracture Toughness

Adherence Measurements and Corrosion Resistance in Primer/Hot-Dip Galvanized Steel Systems

Mechanical Interphases in Adhesive Joints: Characterisation Methods and FE‐Simulations

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