Abstract:
The purpose of this research is to develop a polychloroprene rubber based industrial contact adhesive with higher strength as compared to the commercially available adhesives.
The focus of this new adhesive would be on the higher bond strength, compatibility, and durability for practical applications in shoe, plastic, leather, and automotive industries depicting higher performances than the current commercially available adhesives for the same purpose. This will include the formulation of new adhesive experimentally by arranging, examining, and testing the different proportions of the chloroprene rubber of different commercially available grades, Phenolic resins, MgO, antioxidants and the solvent. With varying amount of resin up to 85 phr the best results are obtained. The drying time for the adhesive is optimized to the 4 min. The %of solids are 58 percent which depicts the presence of high usable adhesive in the set formulations. The Understanding and depicting the reaction kinetics during the reaction of rubber, phenolic resin and the metal oxide, formation of new bonds and the possible adhesive and cohesive forces for the bonding illustrated by different characterization techniques. The peel strength test gives the bond strength when applied to canvas-canvas and leather-leather substrates which are of 60 and 55 N/mm. The formulated adhesive is 1.5 times better than the commercially available adhesive.
Keywords
Polychloroprene rubber, Phenolis resins, MgO, Canvas, Leather, Antioxidants.
