| 摘要 |
The invention is directed to an ethylene glycol mixture with: a) 20-70 weight percent ethylene glycol b) 1-10 weight percent ammonium pentaborate c) 1-10 weight percent mannitol d) 0-1.0 weight percent 4-nitro-benzoic acid e) 0-0.5 weight percent ammonium hypophosphite f) 3-35 weight percent diethylene glycol monobutyl ether g) 2-10 weight percent of a mixture of dimeric and trimeric acids. The water content of the electrolyte can be reduced by employing a mixture of dimeric and trimeric acids. the residual current is thereby reduced, and the durability of the capacitor is improved. The invention is also directed to an Al electrolytic capacitor with the inventive ethylene glycol mixture as electrolyte. over and above this, the invention is directed to the employment of the ethylene glycol mixture
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