The influence of hydroxyl group concentration on epoxy–aluminium bond durability

Molecular Understanding of the Adhesive Force between a Metal Oxide Surface and an Epoxy Resin: Effects of Surface Water

“…Rider et al have investigated the influence of water soaking of aluminum adherend on the durability of adhesive bonds formed between an epoxy adhesive and aluminum adherend. 16 They report that water exposure did not significantly contribute to the differences in the adhesive surface, which is in good agreement with our T 6 (2012)results. We define ¦r F as the distance at the maximum of the forcedistance curve.…”

“…16 A calculated value of A EP is 1.04 nm 2 . The maximum adhesion stresses calculated from eq 5 are 5.1 © 10 8 and 5.0 © 10 8 Pa for the models with and without adsorbed water molecules, respectively.…”

“…4446 The model of the hydroxylated £-alumina (001) surface was prepared by the same method as our previous work, 27 where the model of Raybaud and coworkers 42,43 and the procedure of Knaup et al 23 were used. Geometry optimization was performed by using DFT calculations on a model containing 52 atoms (Al 16 51 In all the MD simulations, the system was kept at a constant temperature by using a NVT ensemble with the Nosé-Hoover thermostat. The time step was set to be 1 fs.…”

Environmental durability of adhesively bonded FRP/steel joints in civil engineering applications: State of the art

“…In general, moisture can change resin through plasticisation, swelling, cracking and hydrolysis [20,30,31]. The high moisture absorption susceptibility of adhesives stems from their surface topology [32] and resin polarity [33]. Zhou and Lucas [34] studied the interaction of water molecules with epoxy resins.…”

New Adhesive Bonding Surface Treatment Technologies for Lightweight Aluminum-Polypropylene Hybrid Joints in Semi-Structural Applications

“…Therefore, by considering this conclusion for the analysis of results presented in Figure 12, it must be stressed out that the linear relationship observed between At.%O and SLS stress is not more than a coincidence. In the case of metals, the significant chemical interactions that affect bond strength are believed to occur between the hydroxyl (OH) groups present on the metal oxide surface and OH groups present in the adhesive [17]. During the present study, the role of OH groups in adhesion of plasma treated polypropylene was evidenced from the use of ATR-IR spectroscopy practiced on different cured epoxy adhesives.…”