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Epoxy–amine/metal interphases: Influences from sharp needle-like crystal formation

Aufray, Maëlenn and Alain André, Roche Epoxy–amine/metal interphases: Influences from sharp needle-like crystal formation. (2007) International Journal of Adhesion & Adhesives, vol. 27 (n° 5). pp. 387-393. ISSN 0143-7496

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Official URL: http://dx.doi.org/10.1016/j.ijadhadh.2006.09.009

Abstract

When epoxy–amine liquid mixtures are applied onto metallic oxide layer, concomitant amine chemical sorption and metallic surface dissolution appear leading to the organo-metallic complex formation. We studied the interphase formation and used two different amines as hardener (isophoronediamine (IPDA) and diethylenetriamine (DETA)). If the complex concentration within the liquid amine or epoxy–amine prepolymer is higher than its solubility limit, complexes crystallize. Sharp needle-like crystals are observed only with modified IPDA. For Al-IPDA crystals, the melting point is about 78°C, but as the network is formed at this temperature, crystals remain present at the end of the polymerization cycle.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com The original PDF of the article can be found at International Journal of Adhesion & Adhesives website: http://www.sciencedirect.com/science/article/pii/S0143749606000996
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS
Other partners > Institut National des Sciences Appliquées de Lyon - INSA (FRANCE)
Other partners > Université Claude Bernard-Lyon I - UCBL (FRANCE)
Other partners > Université Jean Monnet - St Etienne (FRANCE)
Laboratory name:
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Deposited By: Maelenn AUFRAY

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