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Theses

Caractérisation physico-chimique des
interphases époxyde-amine / oxyde
ou hydroxyde métallique, et de leurs constituants

Abstract : Epoxy-diamines are used as adhesives or paints in many industrial applications. When they were applied on metallic substrates and cured, an interphase, having chemical, physical, and mechanical specified properties, was created between the substrate and the polymer. The amine dissolved the hydrated metallic oxide layer and, at the same time, chemisorbed on the metal. The amine chemically reacted to form an organometallic complex. Then, complexes reacted with the epoxy monomer to form a new network. When over the complexes solubility limit, the chelates crystallized. Such crystals acted as short fibers, changing the mechanical properties of the coatings. Therefore, the different chemical, physical, and mechanical properties of these systems were determined and correlated to the formation and/or precipitation of the chelates. This occurred using two amines: the isophorone diamine, which crystallized after the reaction onto metal, and the diethylenetriamine, which never crystallized.
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https://tel.archives-ouvertes.fr/tel-00011759
Contributor : Maëlenn Aufray <>
Submitted on : Monday, March 6, 2006 - 10:13:09 AM
Last modification on : Wednesday, July 8, 2020 - 12:42:49 PM
Long-term archiving on: : Saturday, April 3, 2010 - 10:42:30 PM

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  • HAL Id : tel-00011759, version 1

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Maëlenn Aufray. Caractérisation physico-chimique des
interphases époxyde-amine / oxyde
ou hydroxyde métallique, et de leurs constituants. Matériaux. INSA de Lyon, 2005. Français. ⟨tel-00011759⟩

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