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Scratch Damage and Recovery of Controlled Epoxy Networks

  • Hamed Lakrout (a1), Aaron M. Forster (a2), Lipiin Sung (a3), Chris A. Michaels (a4) and Deborah Wang (a5)...

Abstract

Surface scratches in a series of controlled epoxy networks (CEN) were measured using a combination of instrumented indentation protocols and laser scanning confocal microscopy. Identical epoxy chemistry with increasing molecular weight between crosslinks provided different viscoelastic relaxation behaviors with the same modulus at ambient conditions. The glass transition temperatures (Tg)ranged between 70°C and 117°C. The high Tg CEN exhibited the lowest penetration depth and the highest elastic recovery. The results are analyzed with respect to the macroscale bulk properties and underlying molecular architecture of the CEN materials.

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Bertrand-Lambotte, P., Loubet, J.L., Verpy, C., Pavan, S., Thin Solid Films, 420421, 281 (2002).
Bhushan, B., “Principles and Applications of Tribology”, Wiley & Sons, New York (1999).
Oliver, W.C., Pharr, G.M., J. Mater. Res., 7, 1564 (1992).

Keywords

Scratch Damage and Recovery of Controlled Epoxy Networks

  • Hamed Lakrout (a1), Aaron M. Forster (a2), Lipiin Sung (a3), Chris A. Michaels (a4) and Deborah Wang (a5)...

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