Authors: M Barletta S Venettacci M Puopolo S Vesco A Gisario
Publish Date: 2014/11/12
Volume: 12, Issue: 2, Pages: 333-346
Abstract
In the present investigation scratch resistance chemical inertness and corrosion resistance of methyl phenyl polysiloxane coatings on Fe 430 B structural steel with or without an organosilane intermediate layer were analyzed The role of Al–Mg pigments dispersed in the resin was studied too The high molecular weight of the polysiloxane resin ensures good adhesion to the substrate low porosity and high mechanical stability The good ductility and low steric hindrance of the methyl groups coupled with the chemical inertness of the phenyl groups yields coatings with utmost endurance to aggressive chemicals and above all that are suitable as corrosion retardants on sensitive steel substrates Last the dispersion in the resin of particles which act as a corrosion inhibitor as well as the interposition of organosilane layers between substrate and polysiloxane resin can improve further the potential of the designed barrier coatingsThe authors wish to thank Mrs Patrizia Moretti for her contribution during the development of endurance tests Mr Daniele Ceccarelli and Mr Massimiliano Tonti are kindly acknowledged for their support during the preparation of graphical materials for the present work
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