The method of connecting an object with adhesive. Obviously, to achieve good adhesion, must have two conditions: the adhesive will be good to be adhered to the surface of moist; there are strong bonding force between the adhesive and the adherend, the binding force is the origin and nature of bonding mechanism
The bonding process can be divided into two stages.
The first phase, liquid adhesive to the adherend surface diffusion, surface wetting gradually be adhered and penetrate the surface micropores, and desorption of adsorbed gas instead of sticking surface, the adherend surface between the contact sides between the adhesive and surface contact. The application of pressure and temperature is beneficial to the process.
The second stage, the production of adsorption to form a secondary key or the main bond, the adhesive itself by physical or chemical changes from liquid to solid, so that the bonding effect is fixed. Of course, these two stages can not be separated.
As for the binding force between the adhesive and the adhesive is, roughly about several possible:
(1) secondary binding due to adsorption and diffusion
(2) chemical bonds formed by chemical or chemical reactions
3) valence key, such as generation of metal atoms with adhesive molecule of N and O atom valence bond
4) the electrostatic attraction between the surface of the adhesive and the adhesive due to the heterogeneous charge
5) due to the adhesive molecules into the pores on the surface be adhered and uneven and the formation of mechanical force