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• Time of issue:2021-07-14
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(Summary description)The chemical bond theory believes that in addition to the interaction force between the adhesive and the adherend molecules, there are sometimes chemical bonds, such as the bonding interface between vulcanized rubber and copper-plated metal, the effect of coupling agents on bonding, and the bonding of isocyanate to metal and rubber. Research on the interface, etc., has proved that there is the formation of chemical bonds. However, the formation of chemical bonds is not common. To form chemical bonds, certain quantization components must be met, so it is impossible to form chemical bonds at all contact points between the adhesive and the adherend. Moreover, the number of chemical bonds on the unit adhesion interface is much less than the number of intermolecular interactions, so the adhesion strength from the intermolecular forces cannot be ignored.