Abstract
Abstract This study aimed to enhance the adhesion between brass and NR/SBR rubber sheets using solvent-based adhesives derived from Vietnamese natural rubber. The effects of silane coupling agents and iron nanoparticles on adhesion were investigated. (3-Aminopropyl) Triethoxysilane (APTES) and iron nanoparticles are incorporated into the adhesives at varying concentrations to enhance adhesion levels. The characteristics of the adhesive, such as viscosity, peel-off tensile strength, and the surface morphology of the adhesive bond failure, have been studied and evaluated. The research results demonstrated that as the APTES content added to the adhesives increases gradually, the peel strength between the NR/SBR and brass significantly improves. The highest peel strength value achieved was 5.27 N/mm at 25 phr APTES, representing a 974% increase compared to the sample without silane. The continued addition of iron nanoparticles to the adhesive further improves the peel tensile strength, reaching a maximum value of 5.93 N/mm at a nanoparticle content of 5 phr. This information will be crucial for developing practical applications for this type of adhesive.
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