Effect of surface modified adherend and nanofiller modified adhesives on the shear behaviour of single lap joints: a mini review
N. Karthikeyan, Jesuarockiam Naveen
Abstract
This mini-review investigates the effect of numerous surface treatments and the influence of incorporating organic/inorganic nanofillers into polymeric adhesives on the shear behaviour of adhesive-bonded single-lap joints. Surface treatment of the adherend surface and nanofiller reinforcement on the adhesive has enhanced the shear strength of adhesive-bonded joints. This study examined numerous nanofillers (CBs, GNPs, MWCNTs, CNH, MMT, SNPs, RGO, GO, GNOP, and ceramic fillers) reinforcement with varying weight percentages (0–3%) and surface preparation techniques such as grid blasting, acetone cleaning, sandpaper roughing, acid etching, etc. It has been observed that the surface treatment techniques and the addition of nanofillers enhanced the cohesive and adhesive forces between the adherend and the adhesive, causing the adherend and adhesive to mechanically interlock in the overlapping zone. Moreover, 10 phr of organo-modified montmorillonite (MMT) filled epoxy exhibited excellent shear strength among the myriad organic/inorganic nano filler-modified adhesive joints. This critical Mini-Review will open new avenues in adhesive-bonded single-lap joint research.