Adhesive nanosilica/aluminium powder — Epoxy for joint application on composite car body of electrical vehicle

The objective of this research is to investigate the comparison nanosilica and aluminium powder in epoxy as adhesive on shear strength of single lap joint between aluminium-GFRP composite. The shear strength was determined by utilizing the single-lap shear test. The nanosilica content was varied in 0, 1, 2, 3 and 4 (w/w), whereas the content of aluminium powder was varied in 15, 20, 25, 30 and 35 (w/w). Experimental results showed that the nanosilica-epoxy adhesive has the maximum shear strength at 2% nanosilica content. However, for the use of the aluminium powder-epoxy adhesive, the shear strength decreased significantly along with elevated level of aluminium powder. The adhesive failure mode occurres the joining using nanosilica-epoxy as adhesive, and the joining using aluminium powder-epoxy as adhesive is categoried as cohesive failure mode. The cohesive failure mode has higher shear strength over adhesive failure mode.