Method for preparing aluminum plate base for inkjet computer to plate and hydrophilic coating
A hydrophilic coating and inkjet printing technology, which is applied in the field of printing plates, can solve the problems of large pore size of the plate base and the decline in printing quality of printed matter, and achieve the effects of improved resolution, good wear resistance, and cheap raw materials
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Embodiment 1
[0047] Wash the aluminum plate base with water, remove oil in a 40°C degreasing solution (40wt% sodium hydroxide aqueous solution), and then neutralize the degreasing liquid remaining on the aluminum plate base with 2wt% dilute hydrochloric acid solution, heat at 100°C Wash with water.
[0048] Place the aluminum plate base that has been degreased and cleaned up in the electrolytic solution for two electrolysis, the first electrolysis: the concentration of hydrochloric acid in the electrolytic solution is 1wt%, the concentration of tartaric acid is 1wt%, and the concentration of aluminum chloride is 0.01wt%, the balance is water, the electrolysis time is 80s, and the temperature of the electrolyte solution is 40°C; take it out and place it in the electrolyte solution for the second electrolysis: the concentration of hydrochloric acid in the electrolyte solution is 1wt%, and the concentration of tartaric acid is 1wt %, the concentration of aniline is 0.01wt%, the concentration ...
Embodiment 2
[0051] Wash the aluminum base with water, degrease in a 50°C degreasing solution (40wt% sodium hydroxide aqueous solution), then neutralize the degreasing solution remaining on the aluminum base with 2wt% dilute hydrochloric acid solution, heat at 100°C Wash with water.
[0052] Place the aluminum plate base that has been degreased and cleaned up in the electrolytic solution for three electrolysis, the first electrolysis: the concentration of hydrochloric acid in the electrolytic solution is 10wt%, the concentration of diglycolic acid is 0.1wt%, and the concentration of acetic acid is 0.1wt%, the concentration of aluminum sulfate is 0.2wt%, the balance is water, the electrolysis time is 50s, and the temperature of the electrolyte solution is 30°C; take it out and place it in the electrolyte solution for the second electrolysis: the concentration of hydrochloric acid in the electrolyte solution The concentration of diglycolic acid is 0.5wt%, the concentration of acetic acid is ...
Embodiment 3
[0055] Wash the aluminum base with water, remove oil in a 40°C degreasing solution (40wt% sodium hydroxide aqueous solution), then neutralize the degreasing solution remaining on the aluminum base with a 2wt% dilute hydrochloric acid solution, heat at 90°C Wash with water.
[0056] Put the above-mentioned degreased and cleaned aluminum plate base in the electrolyte solution for three electrolysis, the first electrolysis: the concentration of hydrochloric acid in the electrolyte solution is 1wt%, the concentration of malonic acid is 0.05wt%, the concentration of aluminum sulfate is 0.01wt%, the balance is water, the electrolysis time is 40s, and the temperature of the electrolyte solution is 25°C; take it out and place it in the electrolyte solution for the second electrolysis: the concentration of hydrochloric acid in the electrolyte solution is 0.05wt%, malonic acid The concentration of aluminum sulfate is 0.04wt%, the concentration of aluminum sulfate is 0.02wt%, the balance...
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