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  • Development of high performance, low toxicity anti-fingerprint organic treatment of hot-dip Al-Zn coated steel sheet for building and home-appliance applications

Abstract

The objective of this research was the further development of anti-fingerprint protection treatment and to significantly improve the performance of thin (less than 1 ?m) clear organic coatings in the following domains:

- Dry lubricity;
- Aptitude for post-painting;
- Environmental acceptability (low chromium content).

Film application was transferred from a squeeze and rinse installation to an industrial chemcoater and proper application techniques were developed. The anti-fingerprint formulations were optimized for drying under variable conditions, including very low peak metal temperatures (30 C). Following a final evaluation of several product families (as produced by leading European suppliers), waterborne polymer blends containing only 15 mg of chromium within a 1?m thick dry film have been selected for their outstanding performance on hot-dip 55 Al-Zn metallic coatings. Paintability testing and corrosion behaviour following up to three years' outdoor exposure are included. uded.

Additional information

Authors: KUHN M, ProfilARBED-Recherches, Esch/Alzette (LU)
Bibliographic Reference: EUR 18005 EN (1998) 263pp., ECU 45.00
Availability: Available from the (2)
ISBN: ISBN 92-828-4606-7
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