On the correlation between surface chemistry and amine adsorption to interfacial bonding mechanisms, strength and durability in steel-epoxy adhesive bonds
J. P.B. van Dam (TU Delft - Mechanical Engineering)
S. T. Abrahami (TU Delft - Mechanical Engineering)
M. Mousavi (TU Delft - Electrical Engineering, Mathematics and Computer Science)
Y. Gonzalez-Garcia (TU Delft - Mechanical Engineering)
H. Terryn (Vrije Universiteit Brussel)
J. M.C. Mol (TU Delft - Mechanical Engineering)
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Abstract
Highlights
• Controlled pretreatments link steel oxide chemistry to epoxy adhesion.
• Adhesion strength scales with surface hydroxyl density.
• Hydroxyl-rich surfaces show superior adhesion retention in saline environments.
• Probe molecule links microscopic amine bonding to macroscopic adhesion strength.
• Covalent coupling across silane–steel interface linked to superior adhesion strength.
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