The mechanism of hardener and advantages to add hardener in stabilized gravel base are introduced.

In the preparation of conductive paints of epoxy resin filled with copper powders the reaction between the curing agent and copper was studied in detail by means of SEM and IR.

The sorts and the function of components in the adhesives, including film-forming agents, adhesion synergists, adhesion promoters, coupling and curing agents, fillers and solvents, were introduced.