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Reinforced poly(hydroxyurethane) thermosets as high performance adhesives for aluminum substrates

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Abstract

Poly(hydroxyurethane) (PHU) thermosets reinforced with (functional) nanofillers were developed to design high performance adhesives for bare aluminum. Solvent-free cyclic carbonate/amine/PDMS formulations loaded with native, epoxy- or cyclic carbonate-functionalized ZnO nanofillers were premixed before deposition and thermal curing onto Al. The results highlight that the addition of PDMS prevents PHUs from delamination of the Al surface by increasing the adhesive hydrophobicity and thus limiting the water uptake. The dispersion of functional fillers within PHUs improves their thermal and mechanical properties. Benchmarking of the adhesive performances of the reinforced PHU glues with existing PHU formulations attests the benefits of dispersing functional fillers and PDMS within a resin and evidences a 270% increase of the shear strength of reinforced PHU adhesives compared to formulations reported in the literature.

Graphical abstract: Reinforced poly(hydroxyurethane) thermosets as high performance adhesives for aluminum substrates

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Publication details

The article was received on 20 Jul 2017, accepted on 29 Aug 2017 and first published on 29 Aug 2017


Article type: Paper
DOI: 10.1039/C7PY01209H
Citation: Polym. Chem., 2017, Advance Article
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    Reinforced poly(hydroxyurethane) thermosets as high performance adhesives for aluminum substrates

    S. Panchireddy, J.-M. Thomassin, B. Grignard, C. Damblon, A. Tatton, C. Jerome and C. Detrembleur, Polym. Chem., 2017, Advance Article , DOI: 10.1039/C7PY01209H

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