STUDY ON WOOD COATING

Abstract

This thesis deals with the preparation of solvent free wood coating composition cured with the EB radiation and the evaluation of its properties. The known methods of coating comprise of coating with organic emulsions along with various solvents. Also the available UV radiation curing was not found suitable as the photo emission generates heat in the curing layer and gives rise to residual stresses. It was found that the use of EB curing using free radical mechanism provide ultra fast curing even there is a bulk of the surface to be cured in comparatively less time than the other radiation processes available. Coating composition based on epoxy acrylate, cured at 400 KGy. The molecules of the coating get cross linked and provide protective surface to the wood. The resulting DCE coatings hold better properties of gloss, stain (except acetone) and thermal properties in comparison to conventional coating. Also the increase in the mechanical strength of the coating and improved adhes...