Volume 25, Issue 11 pp. 1356-1365
Special issue: Research article

An s-triazine briged silylalkyl sol–gel precursor—synthesis, structure and coating formation for electrical insulation of copper wire and corrosion protection of construction steel

Stefan Pfeifer

Stefan Pfeifer

Institute of Inorganic Chemistry, TU Bergakademie Freiberg, Leipziger Str. 29, D-09596 Freiberg, Germany

Search for more papers by this author
Alejandro Gutierrez

Alejandro Gutierrez

Van Loon Chemical Innovation, Science Park 408, 1098 XH Amsterdam, The Netherlands

Search for more papers by this author
Edwin Kroke

Corresponding Author

Edwin Kroke

Institute of Inorganic Chemistry, TU Bergakademie Freiberg, Leipziger Str. 29, D-09596 Freiberg, Germany

Correspondence to: Edwin Kroke, Institute of Inorganic Chemistry, TU Bergakademie Freiberg, Leipziger Str. 29, D-09596 Freiberg, Germany.

E-mail: [email protected]

Search for more papers by this author
First published: 25 August 2014
Citations: 3

This article is published in Journal of Polymers for Advanced Technologies as a special issue on 12th PAT Conference in Berlin, 2013, edited by Prof. Andreas Lendlein and Prof. Marc Behl, Institute of Biomaterial Science, Helmholtz-Zentrum Geesthacht GmbH, Centre for Materials and Coastal Research, Kantstr. 55, 14513 Teltow, Germany.

Abstract

An aminoalkylalkoxysilane modified s-triazine was prepared and used as single-source precursor for hybrid coatings. These coating materials were applied and tested for the electrical insulation of fine copper wires and for corrosion protection of construction steel. The molecular precursor was comprehensively analyzed using FT-IR, 1H, 13C and 29Si NMR spectroscopy. Besides, the initial stages of hydrolysis and condensation reactions under acidic conditions were examined with solution 29Si NMR spectroscopy. Structures of gelled and heat-treated samples were analyzed with CP/MAS 29Si NMR and FT-IR spectroscopy. Sols were applied on fine copper wires using industrial coating and curing techniques. The performance of the hybrid coatings was characterized by electrical breakdown tests, pinhole tests and mechanical strength measurements. The anti-corrosion behavior of the s-triazine precursor derived coatings on steel substrates was studied by electrical impedance spectroscopy. The spectra were interpreted with respect to different hydrolysis and condensation rates, curing temperatures and coating thicknesses. Copyright © 2014 John Wiley & Sons, Ltd.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.