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A kind of capacitor impregnating liquid

A technology of dipping liquid and capacitor, applied in the direction of drying/dipping machine, etc., can solve the problems of poor dielectric strength and volume resistivity, and achieve the effect of good dielectric strength, improving freezing point and increasing content

Active Publication Date: 2022-04-05
广州金立电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, alkylbenzene is a kind of synthetic insulating oil used after the prohibition of polychlorinated biphenyls. Its electrical and physical properties are better than mineral oil and its price is low, but its dielectric strength and volume resistivity are poor, which limits its use. Applications in Capacitors

Method used

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  • A kind of capacitor impregnating liquid
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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A capacitor impregnation solution, the capacitor impregnation solution is made of the following raw materials in parts by weight: 82.9 parts of mixed vegetable oil, 6 parts of polyisobutylene, 5 parts of modified white carbon black, 2 parts of biochar, 1.8 parts of hydrated magnesium silicate superfine Powder, 1.5 parts of glacial acetic acid, 1.4 parts of solid wax, 0.4 parts of hydroxypropyl methylcellulose.

[0037] The solid wax is microcrystalline wax.

[0038] The preparation method of described mixed vegetable oil is:

[0039] (1) Add 20 parts of castor oil, 20 parts of soybean oil, 15 parts of rapeseed oil, 15 parts of palm oil, 10 parts of nut oil, 10 parts of grapeseed oil, and 10 parts of jojoba oil into the reaction kettle according to the weight ratio In the middle, stir at 300rpm for 35min, set aside;

[0040] (2) Add 1.5 parts of table salt, 0.8 parts of tocopheryl acetate, 0.7 parts of sodium dodecylbenzenesulfonate, and 1.5 parts of sodium stearate in...

Embodiment 2

[0050] A capacitor impregnation solution, which is made of the following raw materials in parts by weight: 70 parts of mixed vegetable oil, 4 parts of polyisobutylene, 2 parts of modified white carbon black, 1 part of biochar, 1 part of hydrated magnesium silicate superfine Powder, 1 part of glacial acetic acid, 0.5 part of solid wax, 0.2 part of hydroxypropyl methylcellulose.

[0051] The solid wax is microcrystalline wax.

[0052] The preparation method of described mixed vegetable oil is:

[0053] (1) Add 20 parts of castor oil, 20 parts of soybean oil, 15 parts of rapeseed oil, 15 parts of palm oil, 10 parts of nut oil, 10 parts of grapeseed oil, and 10 parts of jojoba oil into the reaction kettle according to the weight ratio In the middle, stir at 300rpm for 35min, set aside;

[0054] (2) Add 1.5 parts of table salt, 0.8 parts of tocopheryl acetate, 0.7 parts of sodium dodecylbenzenesulfonate, and 1.5 parts of sodium stearate into the reactor, and stir at 300 rpm for 3...

Embodiment 3

[0064] A capacitor impregnation solution, the capacitor impregnation solution is made of the following raw materials in parts by weight: 85 parts of mixed vegetable oil, 8 parts of polyisobutylene, 6 parts of modified white carbon black, 5 parts of biochar, 4 parts of hydrated magnesium silicate superfine Powder, 4 parts of glacial acetic acid, 2 parts of solid wax, 0.6 part of hydroxypropyl methylcellulose.

[0065] The solid wax is microcrystalline wax.

[0066] The preparation method of described mixed vegetable oil is:

[0067] (1) Add 20 parts of castor oil, 20 parts of soybean oil, 15 parts of rapeseed oil, 15 parts of palm oil, 10 parts of nut oil, 10 parts of grapeseed oil, and 10 parts of jojoba oil into the reaction kettle according to the weight ratio In the middle, stir at 300rpm for 35min, set aside;

[0068] (2) Add 1.5 parts of table salt, 0.8 parts of tocopheryl acetate, 0.7 parts of sodium dodecylbenzenesulfonate, and 1.5 parts of sodium stearate into the re...

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Abstract

The invention discloses a capacitor impregnation solution, which is prepared from the following raw materials: mixed vegetable oil, polyisobutylene, modified white carbon black, biochar, hydrated magnesium silicate superfine powder, glacial acetic acid, solid wax, hydroxypropyl methyl cellulose. The capacitor impregnating liquid with excellent performance is obtained through scientific and reasonable proportioning, and has good dielectric strength and volume resistivity. The capacitor impregnating solution forms vegetable oil by mixing castor oil, soybean oil, rapeseed oil, palm oil, nut oil, grapeseed oil, and jojoba oil, and adds auxiliary agents, tocopheryl acetate, dodecyl Sodium alkylbenzene sulfonate and sodium stearate can effectively reduce the freezing point of vegetable oil, effectively reduce the content of wax and phospholipids, reduce the content of water and saturated fatty acids, increase the content of monounsaturated fatty acids, and improve the The use quality of vegetable oil can significantly improve the dielectric strength and volume resistivity.

Description

technical field [0001] The invention relates to the technical field of capacitor processing, in particular to a capacitor immersion liquid. Background technique [0002] In the production process of capacitors, the capacitors are impregnated under strict vacuum to improve the appearance quality of capacitors and the reliability and service life of capacitors. For the insulation of oil-immersed electrical appliances, mineral oil was widely used at the earliest because of its good thermal conductivity, insulation and low price. The flame retardant insulating oil polychlorinated biphenyl used in the 1930s has been discontinued worldwide because of its toxicity and environmental pollution. Subsequent capacitor impregnants used at home and abroad include: alkylbenzene, phenylxylylethane and single and double benzyltoluene. Among them, alkylbenzene is a kind of synthetic insulating oil used after the prohibition of polychlorinated biphenyls. Its electrical and physical propertie...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G13/04
CPCH01G13/04
Inventor 余艳何丽娜赖书东吴培恺
Owner 广州金立电子有限公司