High molecular polymer, preparation method thereof and electrolyte containing same

A high-molecular polymer and electrolyte technology, applied in the field of electrolyte, can solve the problems of unrecorded solution system II thermosetting gel state electrolyte performance parameters, etc., and achieve excellent high and low temperature performance, good compatibility, flash fire The effect of high voltage

Active Publication Date: 2019-03-01
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, preparation method thereof and electrolyte containing same
  • High molecular polymer, preparation method thereof and electrolyte containing same
  • High molecular polymer, preparation method thereof and electrolyte containing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Embodiment 1 Electrolyte formula and preparation thereof

[0052]

[0053] Preparation process: Mix 52% ethylene glycol and 23% diethylene glycol evenly at room temperature, raise the temperature to 110°C, add 6% polyethylene glycol 400, 2% boric acid, 3% nano diethylene glycol at this time Silicon oxide, after 0.5 hours of heat preservation, raise the temperature to 150°C, add 8% polymer main solute, 1% polyvinyl alcohol, 1% alkyl phosphate, cool down to 130°C after heat preservation for 1 hour, open to adjust the moisture , then lower the temperature to 100°C and add 1% silicon-containing additive, 2% sodium tetraborate and 1% p-nitrobenzoic acid, and adjust the pH to 5-7 with ammonia water after cooling to normal temperature.

Embodiment 2

[0054] Embodiment 2 electrolyte formula and preparation thereof

[0055]

[0056] Preparation process: mix 54% ethylene glycol and 20% ethylene glycol monobutyl ether evenly at room temperature, raise the temperature to 110°C, add 6% polyethylene glycol 1000, 3% boric acid, 3% nano di Silicon oxide, after 0.5 hours of heat preservation, raise the temperature to 150°C, add 8% polymer main solute, 0.5% mannitol, 1% sorbitol, cool down to 130°C after heat preservation for 1 hour, open the mouth to adjust the water, and then Cool down to 100°C and add 2% silicon-containing additives, 1.5% sodium tetraborate and 1% p-nitrobenzoic acid, and adjust the pH to 5-7 with ammonia water after cooling down to normal temperature.

Embodiment 3

[0057] Embodiment 3 performance test

[0058] The working electrolyte parameters are shown in Table 1.

[0059] Table 1

[0060] Example

Moisture (weight%)

Conductivity (30℃, ms / cm)

pH value

Flash voltage (V)

Example 1

2.01

0.77

5.59

691

Example 2

1.98

0.79

5.57

686

[0061] The characteristics and changes of the electrolytic capacitor obtained by using the electrolyte of the embodiment of the present invention are shown in Table 2 after 3000 hours at 85°C.

[0062] Table 2

[0063]

[0064] From the change of electrolyte and product performance parameters in Table 1 and Table 2, it can be found that the flashover voltage of the electrolytic capacitor obtained by using the high molecular polymer shown in formula (I) as the electrolyte of the main solute is higher (>680V). The 650V ultra-high voltage capacitor prepared with the high molecular polymer as the main solute electrolyte has no change in appeara...

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Abstract

Theinvention provides a high molecular polymer, a preparation method thereof and an electrolyte containing the same. The high molecular polymer is shown in a formula (I), and is polymerized from monomeric isoprenol, methyl methacrylate, methacrylic acid, undecylenic acid and acrylic acid. The electrolyte uses the high molecular polymer shown in the formula (I) as a main solute. The 650V ultrahighvoltage capacitor prepared from the electrolyte meets the use requirements, and is more excellent in leakage current, loss and high temperature storage than similar capacitor products.

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): C08F220/04C08F220/06C08F220/14C08F216/04H01G9/035
CPCC08F220/04H01G9/035C08F220/06C08F220/14C08F216/04
Inventor 杨涛余意
Owner DONGGUAN DONGYANG SOLAR SCI RES & DEV CO LTD
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