Capacitor electrolytic solution, preparation method and application thereof

Abstract

The invention discloses a capacitor electrolytic solution, a preparation method and application thereof. The capacitor electrolytic solution comprises the following components in parts by weight: 40-70 parts of ethylene glycol, 2-5 parts of polyethylene glycol, 10-20 parts of dimethylformamide-2, 15-45 parts of a long-carbon-chain hydroxyl mixture, 5-10 parts of a synthesis compound of polyvinyl alcohol and a high-temperature-resistant material thereof, 1-2 parts of mannitol, 2-4 parts of ammonium sebacate, 8-12 parts of ammonium adipate, 3-5 parts of ammonium benzoate, 0.5-1.0 part of m-nitroacetylbenzene, 0.2-0.8 part of o-nitroanisole, 0.5-1.0 part of ammonium dihydrogen phosphate and 8-10 parts of 1,2-ethylene glycol. According to the EG series electrolytic solution provided by the invention, the cost of the liquid chip capacitor is controlled; and an aluminum electrolytic capacitor produced by the EG series electrolytic solution provided by the invention can meet the electrical performance of a product, and is better than a GBL series in high temperature resistance, wherein the upper limit temperature is increased by at least 5 DEG C.

Description

technical field [0001] The invention belongs to the field of electrolytes for electrolytic capacitors, and relates to a liquid patch EG series electrolyte for replacing GBL series, a preparation method and application thereof. Background technique [0002] As the application of aluminum electrolytic capacitors becomes more and more extensive and in-depth, the market competition price brings more and more pressure on enterprises. The main material of aluminum electrolytic capacitors is electrolyte. The liquid adopts the GBL series, which is expensive. The market price ranges from 90 yuan / kg to 160-190 yuan / kg, which brings great challenges to the design cost. Therefore, in view of this situation, the EG series electrolyte was developed to replace The cost of GBL series electrolyte is controlled at 40-50 yuan / kg. Contents of the invention [0003] The object of the present invention is to provide a kind of EG series 10-120v electrolytic solution and its preparation method a...

AI Technical Summary

Problems solved by technology

[0002] As the application of aluminum electrolytic capacitors becomes more and more extensive and in-depth, the market competition price brings more and more pressure on enterprises. The main material of aluminum electrolytic capacitors is electrolyte. The liquid adopts the GBL series, which is expensive. The market price ranges from 90 yuan / kg to 160-190 yuan / kg, which brings great challenges to the design cost. Therefore, in view of this situation, the EG series electrolyte was developed to replace GBL series electrolyte, the cost is controlled at 40-50 yuan / kg