THE ROLE OF INTERFACIAL LAYERS ON THE PERFORMANCE OF AN EPOXY/POLYESTER POWDER COATED ALUMINIUM ALLOY

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MIRABEDINI S.M.; MORADIAN SIAMAK; SCANTLEBURY J.D.; THOMPSON G.E.

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Journal: Iranian Polymer Journal Year:2002 | Volume:11 | Issue:3 Page(s): 167-176

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Title

THE ROLE OF INTERFACIAL LAYERS ON THE PERFORMANCE OF AN EPOXY/POLYESTER POWDER COATED ALUMINIUM ALLOY

Author(s)

MIRABEDINI S.M. | MORADIAN SIAMAK | SCANTLEBURY J.D. | THOMPSON G.E. | Issue Writer Certificate

Keywords

ALUMINIUM

PRETREATMENT

POWDER COATING

CORROSION

POLYACRYLIC ACID

Abstract

The influence of POLYACRYLIC ACID (PAA) and a blend of POLYACRYLIC ACID with hexafluorozirconic acid treatments on the performance of an epoxy/polyester POWDER COATING on a 1050 Al substrate has been studied and compared to the performance of the same system using a so-called chromate/phosphate conversion coating. The chemical interactions between PRETREATMENTs and Al substrates were examined using FTIR spectroscopy and various accelerated test methods were also employed. Two mechanical adhesion measurement methods were used under wet and dry conditions, namely a vertical pull-off test in the dry state and the tape test under dry and wet conditions. The water permeation of the differently pretreated powder coated samples was studied using a capacitance measurement method. FTIR results showed two modes of interaction; namely ionic and complex formation between COO- and AL3+, Various experiments revealed that PAA improved only the dry adhesion but as a standing alone treatment it did not provide an overall improvement-in anti-corrosive performance. The water uptake measurements proved that PRETREATMENT does not considerably affect the properties of the coatings during water permeation stage. The use of various techniques revealed that relatively good performance of the POWDER COATING is due to a high ohmic resistance of the coating prior to and after saturation with water, reasonably low water solubility and good adhesion to the substrate.

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APA: Copy

MIRABEDINI, S.M., MORADIAN, SIAMAK, SCANTLEBURY, J.D., & THOMPSON, G.E.. (2002). THE ROLE OF INTERFACIAL LAYERS ON THE PERFORMANCE OF AN EPOXY/POLYESTER POWDER COATED ALUMINIUM ALLOY. IRANIAN POLYMER JOURNAL (ENGLISH), 11(3), 167-176. SID. https://sid.ir/paper/539890/en

Vancouver: Copy

MIRABEDINI S.M., MORADIAN SIAMAK, SCANTLEBURY J.D., THOMPSON G.E.. THE ROLE OF INTERFACIAL LAYERS ON THE PERFORMANCE OF AN EPOXY/POLYESTER POWDER COATED ALUMINIUM ALLOY. IRANIAN POLYMER JOURNAL (ENGLISH)[Internet]. 2002;11(3):167-176. Available from: https://sid.ir/paper/539890/en

IEEE: Copy

S.M. MIRABEDINI, SIAMAK MORADIAN, J.D. SCANTLEBURY, and G.E. THOMPSON, “THE ROLE OF INTERFACIAL LAYERS ON THE PERFORMANCE OF AN EPOXY/POLYESTER POWDER COATED ALUMINIUM ALLOY,” IRANIAN POLYMER JOURNAL (ENGLISH), vol. 11, no. 3, pp. 167–176, 2002, [Online]. Available: https://sid.ir/paper/539890/en

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