Publication: Encapsulation of trichloroacetic acid and trifluoroacetic acid for autonomous self healing coatings
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Date
2020
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Publisher
TAYLOR & FRANCIS INC
Abstract
Microcapsules with TFA or TCA healing agents with an outer poly(melamine-urea-formaldehyde) (PMUF) were successfully synthesized for the first time, according to a review of published literature. The average sizes of the microcapsules obtained were measured to be 1.7 and 2 mu m for TFA/PMUF and TCA/PMUF, respectively. Both microcapsules were separately added to an epoxy-based coating formulation. To examine the self-healing properties, scanning electron microscopy images were examined at the moment that damage occurred and seven days later. A self-healing experiment showed that the more reactive PMUF/TFA microcapsules were more efficient than the PMUF/TCA microcapsules in repairing scratch damage in the coatings.
Description
Keywords
PMUF microcapsules, trifluoroacetic acid, trichloroacetic acid, self-healing, epoxy-based coatings, MELAMINE-UREA-FORMALDEHYDE, POLY(UREA-FORMALDEHYDE) MICROCAPSULES, LINSEED OIL, EPOXY, MICROENCAPSULATION, FABRICATION, DESIGN, AGENT, AMINE, RESIN