▎ 摘　　要

NOVELTY - Adhesive comprises graphene oxide comprising an epoxy group, a hydroxy group or a carboxylic acid group, and an alkoxysilane compound comprising an amine group, an epoxy group, a carboxylic acid group, a hydroxy group or a thiol group. USE - The adhesive is useful for bonding aluminum-polyurethane composite material (claimed). ADVANTAGE - The adhesive exhibits improved adhesive strength when compared with the conventional adhesives. The aluminum material and the polyurethane of the aluminum-polyurethane composite material can be easily separated from each other during separation process for recycling after use. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for separating an aluminum-polyurethane composite material, comprising irradiating the aluminum-polyurethane composite material, which is bonded using the above adhesive, using microwave for 10 seconds to 30 minutes at 500-1000 watts. DESCRIPTION OF DRAWING(S) - The drawings 1 and 2 show a schematic representation of adhesion of the adhesive, and a sample for evaluating the adhesion strength between the aluminum and polyurethane, respectively. Drawing includes non-English language text.