Development of aeronautical epoxy nanocomposites having an integrated self-healing ability
Creators
- 1. Department of Industrial Engineering, University of Salerno, Fisciano, SA, 84084, Italy
- 2. Institute of Polymers Composites and Biomaterials (IPCB-CNR), Via Previati n. 1/E, Lecco, 23900, Italy
- 3. Department of Macromolecular Chemistry, Institute of Chemistry, Faculty of Natural Science II, Martin Luther University Halle-Wittenberg, Von-Danckelmann-Platz 4, Halle (Saale), 06120, Germany
- 4. Department of Chemistry, University of Petroleum and Energy Studies (UPES), Bidholi Dehradun, 248007, India
Description
Functionalized multi-wall carbon nanotubes (MWCNTs) have been embedded in a rubber-toughened epoxy formulation in order to explore the possibility to impart an auto-repair function to the epoxy matrix. The nanofiller has been covalently functionalized with hydrogen bonding moieties able to act as donor and acceptor of hydrogen bondings. Healing efficiencies have been evaluated for nano charged epoxy formulations at a loading of 0.5% wt/wt of functionalized MWCNTs bearing barbituric acid and thymine-based ligands. For both the performed functionalizations, a self-healing efficiency higher than 50% has been found. Dynamic Mechanical Analysis (DMA) highlights that the inclusion of nanofiller increases the storage moduli. Furthermore, DMA analysis evidences the presence of a phase characterized by a greater mobility of the epoxy chains, which promotes the activation of self-healing mechanisms.
Files
Guadagno et al 2018 matecconf_easn_ceas2018_00021.pdf
Files
(576.6 kB)
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