Self-healing materials for structural applications offer considerable practical benefits because they would allow to overcome the difficulties connected to damage diagnosis and repair. In this article, a process active at very low temperature for the repair of damaged structural material is shown. The self-repair function is based on the metathesis polymerization of ENB activated by Hoveyda-Grubbs' first generation catalyst. The self-healing epoxy mixture, containing the catalyst powder allows a cure temperature up to 180°C. Dynamic mechanical analysis was used to determine mechanical parameters. The autorepair composite shows a high modulus in a wide temperature range, a glass transition temperature at about 100°C and a self-healing efficiency of about 95%.
Self-healing materials for structural applications
GUADAGNO, Liberata;RAIMONDO, MARIALUIGIA;NADDEO, Carlo;MARICONDA, ANNALUISA
2014-01-01
Abstract
Self-healing materials for structural applications offer considerable practical benefits because they would allow to overcome the difficulties connected to damage diagnosis and repair. In this article, a process active at very low temperature for the repair of damaged structural material is shown. The self-repair function is based on the metathesis polymerization of ENB activated by Hoveyda-Grubbs' first generation catalyst. The self-healing epoxy mixture, containing the catalyst powder allows a cure temperature up to 180°C. Dynamic mechanical analysis was used to determine mechanical parameters. The autorepair composite shows a high modulus in a wide temperature range, a glass transition temperature at about 100°C and a self-healing efficiency of about 95%.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
