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Sep 23,2020

Surface treatment of glued materials

1) The influence of surface characteristics: 1. Cleanliness: A layer of low cohesive strength and low surface energy pollution layer and oxide film are adsorbed on the metal surface, which will reduce the bonding strength. Generally, when the metal surface is clean, the contact is small or even zero. After the material treatment, the contact changes with time, and it is easy to be polluted by the ambient atmosphere in the air, the contact angle increases, and the contact angle tends to be stable after about 5H. Contact angle and bonding strength before and after surface treatment 2. Roughness: The surface of the adhered material is polished with gauze or sandblasted, and the bonding strength can be improved by properly roughening the surface. The roughening process removes the pre-existing surface layer. Form a new surface

Surface treatment of glued materials

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