Self-assembling adhesion promoters for corrosion resistant metal polymer interfaces

The self-assembly process has been investigated for the replacement of the present chromating procedure on reactive metals like aluminium and to improve the lacquer adhesion and corrosion inhibition. It will be shown, that self-assembled layers can affect adhesion and corrosion inhibition on alumini...

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Bibliographic Details
Published in:Progress in organic coatings 1998-05, Vol.34 (1-4), p.1-12
Main Authors: Maege, Iris, Jaehne, Evelin, Henke, Axel, Adler, Hans-Juergen P, Bram, Christian, Jung, Christian, Stratmann, Martin
Format: Article
Language:English
Subjects:
Adhesion promoter
Aluminium
Applied sciences
Coatings. Paints, varnishes and inks
Corrosion
Corrosion inhibitor
Corrosion prevention
Exact sciences and technology
Metals. Metallurgy
Polymer industry, paints, wood
Self-assembly
Technology of painting and drying
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Summary:The self-assembly process has been investigated for the replacement of the present chromating procedure on reactive metals like aluminium and to improve the lacquer adhesion and corrosion inhibition. It will be shown, that self-assembled layers can affect adhesion and corrosion inhibition on aluminium and its alloys. For self-assembly molecules (SAMs) substances are required which are able to react spontaneously on the surface for which terminated alkyl-phosphonic and phosphoric acid monoalkyl esters have been synthesised. The best anchor groups for aluminium were ascertained by pH-dependent flotation tests, dynamic contact angle measurements and corrosion tests. Grazing angle Fourier transform infrared spectroscopy (FTIR), angle dependent X-ray photoelectron spectroscopy (XPS) and Auger measurements show the existence and orientation of these new molecular structures. Model surface reactions with isocyanates demonstrate the binding capability to the lacquer.
ISSN:0300-9440
1873-331X
DOI:10.1016/S0300-9440(98)00010-1