Norazwani M.Z.Ahmad S.H.Ali E.S.2024-05-292024-05-29201397830400000001660933610.4028/www.scientific.net/AMM.393.512-s2.0-84886256225https://www.scopus.com/inward/record.uri?eid=2-s2.0-84886256225&doi=10.4028%2fwww.scientific.net%2fAMM.393.51&partnerID=40&md5=c940689566fecae61b80c2a41e1cfb9dhttps://oarep.usim.edu.my/handle/123456789/9652Aluminum alloy 2024-T3 was treated by two different methods of surface treatments i.e. by alkaline etching and warm water treatment followed by silanization method in order to enhance the adhesive bonding. The effects of both the substrate surface condition and the adhesive properties on single-lap shear resistance were analysed. Three different formulation of polyurethane adhesive by varying the NCO:OH ratio which were prepared from polyol based on polycaprolactone (PCL)/palm kernel oil (PKO) with an aromatic and cycloaliphatic diisocyanate. Moreover, wettability tests were performed in order to evaluate the effect of all parameters mentioned above on the substrate/adhesive interaction. Surface treatment with warm water and ?- GPS gives better wettability and adhesive bonding compared to alkaline etching surface treatment. � (2013) Trans Tech Publications, Switzerland.en-USAluminum and alloysContact angleLap shear strengthSurface treatmentsAdhesive propertiesAluminum alloy 2024-t3Aluminum and alloysLap shear strengthPolyurethane adhesivesShear resistancesSubstrate surface conditionsWettability testsAluminumContact angleEtchingMechanical engineeringPalm oilPolycaprolactonePolyurethanesShear strengthSurface treatmentWettingAluminum alloysConference Paper5156393