Treating process inhibiting reaction between aluminium foil oxide film in electrolytic capacitor and water and inspection method thereof
An electrolytic capacitor and processing technology technology, applied in electrolytic capacitors, capacitors, metal material coating process and other directions, can solve the problems of loss of waterproof and ability, unsatisfactory effect, difficult to effectively inhibit hydration, etc., and achieve inhibition of hydration. , the effect of improving service life and safety
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Embodiment 1
[0028] The water content of the working electrolyte used in the aluminum electrolytic capacitor in this embodiment is 30%. The specific process is as follows: After the anode foil has undergone conventional corrosion and cleaning processes, it is immersed in a phosphoric acid aqueous solution with a concentration of 10% at 40°C for 10 seconds, taken out for cleaning with pure water, and then placed in phosphoric acid with a concentration of 1% at room temperature. Immerse in the aqueous solution for 20s, take out pure water to wash, and finally heat-treat at 200°C for 1.5h.
Embodiment 2
[0030] The water content of the working electrolyte used in the aluminum electrolytic capacitor in this embodiment is 50%. The specific process is as follows: After the anode foil has been subjected to conventional corrosion and cleaning processes, it is immersed in a phosphoric acid aqueous solution with a concentration of 1% at 100°C for 120s, taken out for cleaning with pure water, and then placed in phosphoric acid with a concentration of 0.1% at room temperature. Immerse in the aqueous solution for 20s, take out pure water to wash, and finally heat-treat at 500°C for 1h.
Embodiment 3
[0032] The water content of the working electrolyte used in the aluminum electrolytic capacitor in this embodiment is 40%. The specific process is as follows: After the anode foil has been subjected to conventional corrosion and cleaning processes, it is immersed in a phosphoric acid aqueous solution with a concentration of 5% at 80°C for 80 seconds, taken out for cleaning with pure water, and then placed in phosphoric acid with a concentration of 0.5% at room temperature. Immerse in the aqueous solution for 50s, take out pure water to wash, and finally heat-treat at 300°C for 3h.
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