Aluminium alloy surface passivation solution replacing chromium passivation
A technology of aluminum alloy surface and passivation solution, applied in the direction of metal material coating process, etc., can solve the problems of pollution, secondary pollution of the environment, etc., and achieve the effect of saving money, short processing time, and improving the production environment
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[0016] Example one
[0017] An aluminum alloy surface passivation solution that replaces chromium passivation. The composition of the passivation solution is calculated by weight percentage: modified silicone resin 6%, polyurethane resin 26%, cerium nitrate 1%, ammonium persulfate 5%, Sodium chloride 2%, silica gel 14%, sodium sulfide 3.5%, sodium dihydrogen phosphate 4%, nitric acid 6%, bis-[3-(triethoxy)silylpropyl] tetrasulfide 0.8%, the balance is water.
Example Embodiment
[0018] Example two
[0019] An aluminum alloy surface passivation solution that replaces chromium passivation. The composition of the passivation solution is calculated by weight percentage: modified silicone resin 8%, polyurethane resin 22%, cerium nitrate 2%, ammonium persulfate 3%, Sodium chloride 4%, silica gel 12%, sodium sulfide 4.5%, sodium dihydrogen phosphate 2%, nitric acid 8%, bis-[3-(triethoxy)silylpropyl] tetrasulfide 0.6%, the balance is water.
Example Embodiment
[0020] Example three
[0021] An aluminum alloy surface passivation solution that replaces chromium passivation. The composition of the passivation solution is calculated by weight percentage: modified silicone resin 7%, polyurethane resin 24%, cerium nitrate 1.5%, ammonium persulfate 4%, Sodium chloride 3%, silica gel 13%, sodium sulfide 4.0%, sodium dihydrogen phosphate 3%, nitric acid 7%, bis-[3-(triethoxy)silylpropyl] tetrasulfide 0.7%, the balance is water.
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