Effect of Number of Impregnations of Microberlinla sp with Microcapsule Emulsion on the Performance of Self-Repairing Coatings on Wood Surfaces

Embedding melamine-formaldehyde (MF) resin-coated shellac microcapsules in waterborne coatings can extend the service longevity of on a wood surface to certain extent. Due content limitation self-repairing coatings, effective self-healing performance time is short. With aim improving properties Microberlinla sp substrate, more mechanism was achieved by impregnating ebony substrate several times with an MF transparent shellac-rosin microcapsule emulsion. After impregnation boards microcapsules, acrylic resin coating containing 3.0 wt.% applied boards. The influence number impregnations coating’s physical properties, chemical and explored. results showed that hardness changed little under different numbers impregnations. increasing impregnations, coatings’ adhesion impact strength slowly increased, chromatic difference value roughness first increased then decreased. Impregnating emulsion contributes enhancing aging resistance repair When eight, width change rate cracks 28.4%, which suggested best among all samples. By emulsion, effect interaction between studied, contributing theory for further surfaces promoting application development microcapsules.