Electrolysis solution and preparation method thereof as well as preparation method for obtained aluminum capacitor
A technology of aluminum electrolytic capacitors and electrolytes, applied in liquid electrolytic capacitors, electrolytic capacitors, capacitors, etc., can solve problems such as product failure, flash fire, breakdown, safety accidents, etc., and achieve improved corrosion resistance and high flash fire voltage , Strong corrosion resistance effect
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[0017] Example 1
[0018] An electrolyte for aluminum electrolytic capacitors, the weight percentage composition of which is the formula No. 1 in Table 1, in which: the main solvent is ethylene glycol, the auxiliary solvent is tributyl phosphate, the solute is ammonium sebacate, and the modified additive is A mixture of pentaerythritol and polyethylene glycol, the hydrogen eliminator is p-phenol, and the water-repellent mixture is hypophosphorous acid. Heat ethylene glycol and tributyl phosphate to 70-90°C, add ammonium sebacate, heat to 110-135°C to turn off the heat, and finally add pentaerythritol, polyethylene glycol, p-oxyphenol and hypophosphorous acid mixture, Dissolve it completely, and just let it cool down naturally. The electrolyte was used to make 2200μF / 400 bolt-type aluminum electrolytic capacitor products. The performance of the obtained product is as described in Table 2. After 8000h at 105°C, the product performance is still very good (No. 1).
Example Embodiment
[0019] Example 2
[0020] An electrolyte for aluminum electrolytic capacitors, the weight percentage composition of which is the formula No. 2 in Table 1, in which: the main solvent is ethylene glycol, the auxiliary solvent is monobutyl phosphate, and the solute is ammonium sebacate and 1.6-12 Ammonium diacid, the modified additive is a mixture of phosphotungstic acid and ethyl orthosilicate, the hydrogen eliminator is p-phenol, and the waterproof mixture is ammonium hypophosphite. Heat ethylene glycol and monobutyl phosphate to 70-90°C, add ammonium sebacate and 1.6-dodecanedioic acid ammonium, heat to 110-135°C and turn off the heat, and finally add phosphotungstic acid and ethyl orthosilicate , A mixture of p-oxyphenol and ammonium hypophosphite, make it completely dissolved, and just cool it naturally. The electrolyte was used to make 2200μF / 400 bolt-type aluminum electrolytic capacitor products. The performance of the obtained product is as described in Table 2. After 8000h a...
Example Embodiment
[0021] Example 3
[0022] An electrolyte for aluminum electrolytic capacitors, the weight percentage composition of which is the formula No. 3 in Table 1, in which: the main solvent is ethylene glycol, the auxiliary solvent is diethylene glycol dibutyl ether, and the solute is ammonium sebacate and 1.10- Ammonium dodecanoate, the modified additive is a mixture of citric acid and nano-silica, the hydrogen eliminator is p-phenol, and the waterproof mixture is hypophosphite. Heat ethylene glycol and diethylene glycol dibutyl ether to 70-90°C, add ammonium sebacate and ammonium 1.10-dodecanedioate, heat to 110-135°C to turn off the heat, and finally add citric acid and nano-dioxide The mixture of silicon, p-phenol and hypophosphorous acid can be completely dissolved and cooled naturally. The electrolyte was used to make 2200μF / 400 bolt-type aluminum electrolytic capacitor products. The performance of the obtained product is as described in Table 2. After 8000h at 105°C, the product pe...
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