Effect of Microcapsules of a Waterborne Core Material on the Properties of a Waterborne Primer Coating on a Wooden Surface

Microcapsules of a waterborne core material were prepared using a waterborne primer. The microcapsules of the waterborne core material were added to the waterborne primer to explore the effects of different core-shell ratios and mass fractions of the microcapsules on the property of the waterborne primer coating on the wooden surface. The results show that as the mass fraction of the microcapsules increased, the chromatic aberration increased by degrees, the glossiness decreased gradually, and the hardness increased by degrees, whilst-except for the coating with 0.50:1 microcapsules-the adhesion decreased gradually. When the mass fraction of the microcapsules increased, the impact resistance increased first and decreased later, or remained unchanged after reaching a certain value. When the mass fraction of the microcapsules increased, the elongation at the break increased first and decreased later. When the core-shell ratio was small and the mass fraction was between 5.0% and 15.0%, the coating had better liquid resistance. When the core-shell ratio was 0.67:1 and the mass fraction was 10.0%, the overall property of the coating on the Basswood was the best. The technology of microencapsulation provides a technical reference for the waterborne primer with self-repair qualities on the surface of wooden products.

Automated summary

The study found that increasing the mass fraction of microcapsules led to an increase in color difference, a decrease in glossiness, and an increase in hardness, while adhesion decreased, except for a mass fraction of 0.50:1. Impact resistance increased first and then decreased or remained constant as the mass fraction of microcapsules increased, and elongation at break increased first and then decreased. Coatings showed better liquid resistance when the core-shell ratio was small and the mass fraction was between 5.0% and 15.0%. The overall property of the coating on Basswood was best at a core-shell ratio of 0.67:1 and a mass fraction of 10.0%.