Studies on multifunctional properties of nano particles impregnated alkyd coatings

Abstract

Recently, nanoparticles have drawn attention in alkyd coating industry as it provides multi-performing products. In this study, various nanoparticles such as iron oxide, nickel oxide, titanium dioxide, zinc oxide, newlinezirconium oxide, mixed metal oxides and calcium fluoride as pigment, with newlineother non-toxic additives are impregnated in alkyd resin, produces newlinemultifunctional applications. This work focuses to meet increasing demand on newlinefast drying paints with excellent properties. The physical characteristics of the paint such as glossiness, surface roughness, hydrophilic nature, volatile and non- Volatile Organic Compound, etc., are evaluated.Individual nanoparticles were prepared in bulk amount by adopting various chemical strategies and the size and shape of the particles are confirmedthrough XRD, FESEM and TEM analysis. All the formed particles were in nanorange and could be potentially used as pigment in paint formulation. The paints were formulated by employing high energy ball milling process and used for various studies by coating on glass substrate, A36 steel substrate and in 2-FC opacity card.The formulated paints having very high gloss level of more than 6, newlineensure good aesthetic nature of coating and could be readily used for decorative newlinepurpose. The volatile compound analysis highlights the formulated paints were newlinein the safe VOC limit suggested by Environmental Protection Agency. The newlinespreading nature of paint is corroborated with the hydrophilic nature of paint newlineshowing a very least critical surface tension values below 20 mN/m. Owing to newlinesuch a least surface tension values, all paints exhibited good adherence, higher newlinespreading rate with protecting ability. After applying the paint on steel or glass newlinesubstrate, the film thickness obtained is very less (3-5and#956;m), determined from newlineAFM analysis. newline newline