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High-molecular polymer as well as preparation method thereof and electrolyte solution containing high-molecular polymer

A high-molecular polymer, electrolyte technology, applied in the field of electrolyte, can solve the problems of unrecorded solution system II thermal curing gel electrolyte performance parameters and other problems, achieve excellent high and low temperature performance, high product purity, increase service life Effect

Active Publication Date: 2019-07-02
DONGGUAN DONGYANG SOLAR SCI RES & DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, Chinese patent CN106449113 discloses a heat-cured gel state electrolyte for aluminum electrolytic capacitors, and specifically discloses the preparation process of solution system II, using acrylic acid, methacrylate and ammonium persulfate to react; but solution system II is only Partial composition of heat-cured gel state electrolyte, the preparation of this kind of electrolyte includes multiple steps, and any solution system II and performance parameters of the heat-cure gel state electrolyte are not described in the specification

Method used

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  • High-molecular polymer as well as preparation method thereof and electrolyte solution containing high-molecular polymer
  • High-molecular polymer as well as preparation method thereof and electrolyte solution containing high-molecular polymer
  • High-molecular polymer as well as preparation method thereof and electrolyte solution containing high-molecular polymer

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Effect test

Embodiment 1

[0059] Embodiment 1 Electrolyte formula and preparation thereof

[0060]

[0061]

[0062] Preparation process: Mix 60% ethylene glycol and 22% γ-butyrolactone evenly at room temperature, raise the temperature to 130°C, add 1% boric acid propylene glycol polyester gel, keep warm for 1 hour, then cool down to 100°C, and adjust the opening Moisture, add 16% ammonium salt of the high molecular polymer of formula (I), then add 0.5% ammonium hypophosphite, 0.5% p-nitrobenzyl alcohol, use ammonia water to adjust the pH to 5-7 after cooling to room temperature, and obtain the electrolyte .

Embodiment 2

[0066] Embodiment 2 electrolyte formula and preparation thereof

[0067]

[0068] Preparation process: Mix 65.5% ethylene glycol and 8% ethylene glycol monobutyl ether evenly at room temperature, raise the temperature to 130°C, add 6% polyethylene glycol 2000 at this time, keep it warm for 1 hour and then cool down to 100°C , open to adjust moisture, add formula 19.5% ammonium salt of formula (I) polymer, 0.4% ammonium hypophosphite and 0.6% p-nitrobenzyl alcohol, use ammonia water to adjust pH to 5~7 after cooling to normal temperature, obtain electrolyte.

Embodiment 3

[0072] Embodiment 3 electrolyte formula and preparation thereof

[0073]

[0074] Preparation process: Mix 66.5% ethylene glycol and 6% diethylene glycol monobutyl ether evenly at room temperature, raise the temperature to 130°C, add 5% polypropylene alcohol, keep it warm for 1 hour and cool down to 100°C, open the mouth to adjust the moisture, Add formula 21.5% ammonium salt of high molecular polymer of formula (I), 0.3% phosphoric acid and 0.7% o-nitrophenol, use ammonia water to adjust pH to 5-7 after cooling down to room temperature, and obtain electrolyte.

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Abstract

The invention provides a high-molecular polymer as well as a preparation method thereof and an electrolyte solution containing the high-molecular polymer. The high-molecular polymer is represented bya formula (I) shown in the description, and is formed by performing polymerization on monomer undecylenic acid, methyl methacrylate, methacrylic acid, hydroxyethyl methacrylate and n-butyl vinyl ether; and the electrolyte solution uses an ammonium salt of the high-molecular polymer represented by the formula (I) as a main solute. Compared with a similar capacitor product, a capacitor prepared by adopting the electrolyte solution provided by the invention has higher spark voltage (>=700 V) and better conductivity, the conductivity change is obviously smaller after long-time operation at a hightemperature, and the high temperature stability is better.

Description

technical field [0001] The invention relates to the technical field of electrolytic solutions, in particular to a high molecular polymer and its application in the electrolytic solution of aluminum electrolytic capacitors. Background technique [0002] Aluminum electrolytic capacitors are irreplaceable basic components in various electronic products. With the development of science and technology and the improvement of social needs, the requirements for aluminum electrolytic capacitors are getting higher and higher, making capacitors urgently move towards small size, long life, and durability. The mainstream direction of high temperature, high voltage resistance, high frequency ripple current resistance, low impedance, and low leakage current development. [0003] As the cathode of the aluminum electrolytic capacitor, the electrolyte plays an important role in providing oxygen ions and repairing the anodic oxide film, and determines the working temperature range, rated volta...

Claims

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Application Information

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IPC IPC(8): C08F216/16C08F220/04C08F220/06C08F220/14C08F220/20H01G9/035
CPCC08F216/16C08F220/04C08F220/06C08F220/14C08F220/20H01G9/035
Inventor 余意何凤荣
Owner DONGGUAN DONGYANG SOLAR SCI RES & DEV CO LTD
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