Aluminum electrolysis capacitor working electrolyte for energy saving lamp and preparation thereof

Abstract

The invention relates to a working electrolyte for an aluminum electrolytic capacitor which is used for an energy-saving lamp, and a preparation method thereof. The working electrolyte comprises a main solvent glycol, a secondary solvent propanetriol, solute 1, 7-ammonium and ammonium pentaborate, and additives blockpolyether and p-nitrophenol. Glycol, 1, 7-ammonium, ammonium pentaborate, blockpolyether and p-nitrophenol are prepared according to the weight percentages of (80%-86%): (12%-16%): (1.5%-2.5%): (0.5%-1.5%). The steps of the preparation are as follows: glycol or the mixed liquid of glycol and propanetriol is heated to 120-125 DEG C; the mixed liquid is cooled down; 1, 7-ammonium and ammonium pentaborate are added into the cool mixed liquid and then stirred to dissolve; and then blockpolyether and p-nitrophenol dissolve after being added, and are stirred at a holding temperature. The electrolyte of the invention has low specific resistance, and the aluminum electrolytic capacitor made of the electrolyte has the advantages that the range of the working temperature is wide, the subzero temperature is negative 40 DEG C, and the service life can last for 5,000 h at positive 125 DEG C, thereby meeting the working requirements of the energy-saving lamp.

Description

technical field

[0001] The invention belongs to the field of electrolyte and its preparation, in particular to a working electrolyte for an aluminum electrolytic capacitor used in an energy-saving lamp and a preparation method thereof. Background technique

[0002] Due to the limited space of the electronic rectifier, aluminum electrolytic capacitors for energy-saving lamps require aluminum electrolytic capacitors to be small in size; the working environment temperature is +80°C to +90°C, and aluminum electrolytic capacitors are required to withstand high temperatures; as filter aluminum electrolytic capacitors, they must withstand the high Frequency oscillation, the actual work is in the state of high frequency and high ripple current, so the impedance of the aluminum electrolytic capacitor is required to be small, and the energy-saving lamp is often started in a hot state. Especially the leakage current requirement at high temperature is small. Therefore, it needs small s...