| 초록 |
An extrinsic self-healing coating system containing tetraphenylethylene (TPE) in microcapsules was monitored by measuring aggregation-induced emission (AIE). The core healing agent comprised of methacryloxypropyl-terminated polydimethylsiloxane, styrene, benzoin isobutyl ether, and TPE was encapsulated in a urea-formaldehyde shell. The photoluminescence of the healing agent rapidly increased in blue luminescence intensity and the storage modulus also increased to 105 Pa after photocuring. These results showed that this formulation could be useful as a self-healing material due to the change in fluorescence during photocuring and as an indicator of the self-healing process. To investigate the ability of the healing agent to repair damage to the coating, self-healing coatings containing microcapsules were razor scribed. As the healing process proceeded, blue light fluorescence emission was observed at the scribed regions. |
