An Investigation on the Properties of Eco-Friendly Alkyd and Alkyd Composite Coatings

Abstract

Reducing the use of harmful solvents in alkyd paints is a major challenge for researchers. This paper compares some properties of eco-friendly alkyd and alkyd composite coatings. The method used in this work is to compare the properties of Eco-friendly alkyd and alkyd coatings. An eco-friendly alkyd paint was fabricated using an intermediate emulsion made from polysaccharide (LPR) and about 25 weight percent (wt.%) of water. Infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and thermogravimetric analysis (TGA) were used to characterize the material. Impact resistance, flexibility, adhesion, drying time, etc., of an eco-friendly alkyd composite coating were also studied in comparison with those of an alkyd coating. Results showed that both composite coatings performed well in adhesion, flexibility, and impact resistance, with the highest values. Meanwhile, the relative hardness and drying time of the eco-friendly alkyd composite coating were better than those of the alkyd composite coating. After 80 cycles of UV irradiation exposure testing, both composite coatings can be maintained at a high level in the cross-cut test. Meanwhile, the impact resistance of the alkyd coating decreased from 200 kg·cm to 140 kg·cm, and that of the eco-friendly alkyd coating decreased from 200 kg·cm to 180 kg·cm, respectively. This study showed that eco-friendly alkyd coatings could be used instead of conventional alkyd coatings for outdoor applications.