Preparation method for pressure-sensitive adhesive for metals

The invention relates to a preparation method for a pressure-sensitive adhesive for metals. Firstly, materials chosen for preparation are soft butadiene styrene rubber, smoked rubber sheets, stearic acid, anti-aging agent, curing agent, modified formaldehyde resin, ethyl acetate and chlorosulfonated polyethylene; the soft butadiene styrene rubber, the smoked rubber sheets and stearic acid are stirred under a temperature from 65 DEG C to 80 DEG C for 25 to 40 minutes, and are then cooled to normal temperature; afterwards, the modified formaldehyde resin is added into the cooled solution, and the solution is added with ethyl acetate and stirred until complete mixing; finally, the mixed solution is added with the anti-aging agent, the curing agent and chlorosulfonated polyethylene and stirred into paste, and after washing and filtration, the pressure-sensitive adhesive for metals is obtained. The preparation method has the following advantages that both the adhesive strength and stripping resistance of the press