Why do some acid gels discolor after the curing?
[China Glass Net] Acidic acid will release acetic acid when it is cured. It is corrosive to metal materials. It can be used on aluminum because the surface of aluminum is coated with an oxide film or coating and has a coating to protect it. . Therefore, in general, the discoloration of aluminum is not a problem of glue. There are many problems involved in the construction operation and the quality of the aluminum itself. The quality of aluminum material mainly means that the coating layer of the coated aluminum material is unqualified. If the adhesion is not good, the film layer is too thin, etc., it will affect the discoloration after sizing; improper construction will also cause discoloration. If the aluminum material is placed in a poorly ventilated environment after sizing, the acetic acid released by the curing of the glass glue cannot be dissipated in time, and the local concentration is too high, and the aluminum material is corroded for a long time.
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