Coating characteristics of UV curable epoxy acrylate oligomer modified with acrylated sunflower oil

Abstract EN

In this study epoxy acrylate oligomer (EA) was toughened by epoxidized sunflower oil acrylate (EPOSA) and cured under UV irradiation in the presence of p-methoxy acetophenone as photointiator.

EPOSA was prepared via acrylation process.

Acid value, FTIR, oxirane oxygen content and viscosity were carried out to confirm the occurrence the acrylation process.

Different formulations of EA and EPOSA were prepared and different characterizations such as FTIR, thermogravimetric analysis (TGA), gel fraction and swelling properties were made for cured coating films.

The mechanical and chemical tests such as pencil hardness, adhesion, bending, gloss, steam and stain resistance were measured for cured surface.

FTIR studies indicated that the density of acrylate functionality and degree of curing decreased with increasing the concentration of EPOSA.

The elasticity, gloss and chemical resistance properties were improved by increasing the concentration of EPOSA.