Degradation and recovery of adhesion properties of deformed metal–polymer interfaces studied by laser induced delamination

Abstract

Degradation and recovery of adhesion properties of deformed metal-polymer interfaces studied by laser induced delamination Fedorov, A. V.; van Tijum, R.; Vellinga, W. -P.; De Hosson, J. Th. M. Take-down policy If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim.Downloaded from the University of Groningen/UMCG research database (Pure): http://www.rug.nl/research/portal. For technical reasons the number of authors shown on this cover page is limited to 10 maximum. AbstractAdhesion properties of polymer coatings on metals are of great interest in various industrial applications, including packaging of food and drinks. Particular interest is focused on polymer-metal interfaces that are subjected to significant deformations during manufacturing process. In this work steel samples laminated with polyethylene terephthalate (PET) were subjected to uniaxial tensile deformations followed by annealing treatments. The measurements have demonstrated degradation of adhesion of the metal-polymer interface as the strain introduced by the deformation increased. Moreover, it was observed that within the geometry used in the experiments tensile deformations of the metal substrate introduced in-plane compressive stresses in the bulk of the coating. After applying a thermal treatment restoration of the adhesion has been achieved.Laser induced delamination technique was used to monitor the adhesion properties. In this technique a coating is subjected to a series of infrared laser pulses with a stepwise increase of intensity. Upon increasing the laser pulse intensity, the pressure which is formed inside the blisters reaches a critical value, resulting in further delamination of the coating. To process the experimental data an elastic model was developed. From the analysis of the experimental data the critical stresses required for the delamination and the practical work of adhesion are derived. The model accounts for the compressive in-plane stress present in the coating of the deformed samples.

Numerical–experimental assessment of roughness-induced metal–polymer interface failure

“…Boelen et al, 2004 and performed peel-off experiments and found that the bonding between the polymer and steel is reduced by (pre) deformation of the steel substrate. Laser-induced delamination experiments by Fedorov et al, 2007 showed a similar result. Recent results from Faber et al, 2014 revealed the presence of interface damage in DRD materials by exploring the interface in cross-sections using Focused Ion Beam milling.…”

Adhesion at Al-hydroxide-polymer interfaces: Influence of chemistry and evidence for microscopic self-pinning

“…The adhesion of organic coatings on aluminium is an important industrial topic for example in the packaging of food and beverages. The native oxide on aluminium is stable only in neutral environments (pH [4][5][6][7][8] where no chlorides are present. In the case of aluminium alloys precipitates form cathodic or anodic sites where localized corrosion can initiate.…”

Preventing interface damage by pre-conditioning polymer-coated steels via rolling

“…It is known from literature that different parameters may result from different experiments (Vossen et al, 2014). An example of two experiments that result in a different work of separation (/) are the measurements of Fedorov et al (2007) and . The differences are explained by the distinct energy dissipated within the process zone, i.e.…”

“…The work of separation determined by Fedorov et al (2007) is used here. As the cohesive law used is different, the d n and d t parameters are estimated based on the results in Fedorov et al (2007). The resulting parameters used are listed in Table 2.…”