Lab Scale Development of WaterBased Adhesive for Flexible Substrate

Abstract

The purpose of this study is to develop water-based adhesive for flexible and rigid substrates which have better properties than commercially available solvent based adhesive. Adhesive is a substance which holds two surfaces together by surface attachment process. Polychloroprene rubber is one of the most versatile and widely used base material for adhesive development. The most common and establish polychloroprene adhesive is the solvent based polychloroprene contact adhesive which has been used commercially since many years. Solvent-based adhesive uses volatile organic compounds (VOC) which poses serious environmental and health hazards. Besides this, the antisocial impact due to the sniffing of solvent-based adhesives has created a worldwide concern for the use of solvent-based adhesives. Therefore, it was necessary to develop water-based adhesive which could serve a purpose. Therefor the theme of this study is to produce water-based adhesives which is cost-effective, environmentally friendly, and have better properties than solventbased adhesives. In this research, 33% antioxidant dispersion and 50% zinc oxide dispersion are prepared, and ball milled for 24 hours. After 1 day these dispersions are added with water, Polychloroprene latex, alkyl phenolic resin and dispersing agent. Five formulations were being prepared and then applied on sample material such as canvas and leather after three, five, seven and 15 days. Peel strength and solid content test are measured and compared with commercially available solvent based adhesive. Peel strength test depicts higher strength in water based adhesive. It has been noticed that water-based adhesive is better than solvent based adhesive for many applications.