Alkyd coatings: Improved properties when cured with higher humidity
Reseachers have studied the effect of humidity on the curing of alkoxysilane-functionalised alkyd coatings. They came up with some interesting results.
Alkoxysilane functional alkyds and tung oil-based reactive diluents were synthesised and used as additives in varying amounts in alkyd coatings. Looking at modified alkyd versus modified reactive diluent allows for the comparison of the humidity effect on high and low molecular weight alkoxysilane functional additives.
Improved properties
The coatings were cured at 25 and 75% relative humidity and evaluated for drying time, coating and tensile properties, and gel content. It was found that at higher humidity, the alkoxysilane-containing samples improved properties significantly when compared to the control alkyd.
The study has been published in Journal of Coatings Technology and Research, Volume 18, November 2021.
