_ Ben and Chen, bright, beautiful, eager, emblem, nest, shepherd, daughter-in-law? (contact angle θ

2. Surface treatment

_ Holding the emblem of the Bird's Nest, eating grass, washing and consulting fans? (such as corrosion), chromium plating layer, phosphating layer, release agent, etc. The surface treatment of adherend will affect the adhesive strength. The surface treatment of aluminum and aluminum alloy hopes to produce alumina crystals on the aluminum surface, but the naturally oxidized aluminum surface is very irregular and loose, which is not conducive to bonding.

3. Infiltration

_ Yan Chen loves oil? Influenced by the ambient atmosphere, it often penetrates into some other low molecules. For example, when the joint is in a wet environment or underwater, water molecules will penetrate into the adhesive layer; The polymer adhesive layer is in organic solvent, and solvent molecules penetrate into the polymer. The penetration of low molecules first deforms the adhesive layer and then enters the interface between the adhesive layer and the adherend? The strength of the adhesive layer decreases, which leads to the destruction of the adhesive force.