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Impregnating varnish for transformer

A technology for dipping paint and transformers, applied in the field of transformers, can solve problems such as the inability to meet the insulation performance of transformers, and achieve the effects of shortening gel time, reducing energy consumption, and improving stability

Inactive Publication Date: 2015-05-20
NANTONG HAIWANG ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there are many varieties of solvent-free insulating impregnating varnishes, they still cannot meet the increasing requirements of transformer insulation performance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] The dipping varnish for transformer provided by the embodiment of the present invention includes the following components in parts by weight: 100 parts of unsaturated polyester, 20 parts of silicone resin, 1 part of benzoic acid, 0.5 part of benzoyl peroxide, N, N- 5 parts of dimethylaniline, 1 part of leveling agent, 10 parts of curing agent, 8 parts of reactive diluent.

[0011] Unsaturated polyester includes 40 parts of maleic anhydride, 30 parts of propylene glycol, 20 parts of polyacid and 10 parts of diallyl phthalate, the leveling agent is polymethylphenylsiloxane, and the curing agent is containing Nitrogen phenolic resin, the reactive diluent is styrene.

[0012] The preparation process is as follows:

[0013] Step a, take 100 parts by weight of unsaturated polyester, 20 parts of silicone resin, 1 part of benzoic acid, and 0.5 part of benzoyl peroxide for mixing, then heat to 158 degrees Celsius, and stir for 1-2 hours to obtain mixture 1;

[0014] Step b, pu...

Embodiment 2

[0022] The dipping varnish for transformers provided by the embodiments of the present invention includes the following components in parts by weight: 100 parts of unsaturated polyester, 23 parts of silicone resin, 1.1 parts of benzoic acid, 0.6 part of benzoyl peroxide, N, N- 6 parts of dimethylaniline, 1.1 parts of leveling agent, 11 parts of curing agent, 9 parts of reactive diluent.

[0023] Unsaturated polyester includes 40 parts of maleic anhydride, 30 parts of propylene glycol, 20 parts of polybasic acid and 10 parts of diallyl phthalate, the leveling agent is acrylic resin, the curing agent is nitrogen-containing phenolic resin, and the reactive diluent for xylene.

[0024] The preparation process is as follows:

[0025] Step a, take 100 parts by weight of unsaturated polyester, 23 parts of silicone resin, 1.1 parts of benzoic acid, and 0.6 parts of benzoyl peroxide for mixing, then heat to 158 degrees Celsius, and stir for 1-2 hours to obtain mixture 3;

[0026] Ste...

Embodiment 3

[0032] The dipping varnish for transformer provided by the embodiment of the present invention includes the following components in parts by weight: 100 parts of unsaturated polyester, 28 parts of silicone resin, 1.4 parts of benzoic acid, 0.7 part of benzoyl peroxide, N, N- 6 parts of dimethylaniline, 1.5 parts of leveling agent, 11 parts of curing agent, and 10.5 parts of reactive diluent.

[0033] Unsaturated polyester includes 40 parts of maleic anhydride, 30 parts of propylene glycol, 20 parts of polyacid and 10 parts of diallyl phthalate, the leveling agent is acrylic resin and polymethylphenylsiloxane by weight The ratio is 1:1, the curing agent is nitrogen-containing phenolic resin and aryl ether ester diarylamine in a weight ratio of 2:1, and the reactive diluent is styrene and phenyl glycidyl ether in a weight ratio of 1:3 mixed.

[0034] The preparation process is as follows:

[0035] Step a, take 100 parts by weight of unsaturated polyester, 28 parts of silicone ...

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PUM

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Abstract

The invention provides impregnating varnish for a transformer. The impregnating varnish comprises the following components in parts by weight: 100 parts of an unsaturated polyester, 28 parts of a silicon resin, 1.4 parts of benzoic acid, 0.7 part of benzoyl peroxide, 7 parts of N,N-dimethylaniline, 1.5 parts of a flatting agent, 11 parts of a curing agent and 10.5 parts of a reactive diluent, wherein the unsaturated polyester comprises maleic anhydride, propylene glycol, polybasic acid and diallyl phthalate according to the weight ratio of 4:3:2:1. According to the impregnating varnish for the transformer provided by the invention, the gelation time is obviously shortened, and the storage stability of the impregnating varnish for the transformer is effectively improved.

Description

technical field [0001] The invention relates to the technical field of transformers, in particular to an impregnating varnish for transformers. Background technique [0002] With the rapid development of our country's national economy, the demand for electric power is also increasing day by day. As the main equipment transformer in the power transmission and transformation system, it has also been greatly developed. At home, in order to adapt to and meet market demand, many manufacturers have continuously improved product structure, improved product performance, introduced advanced production technology and equipment from abroad, and made unremitting efforts in the exploration of new processes and new materials. Great strides have been made in continuously improving the quality and reliability of our products. Among them, there are many factors that affect the performance of transformer products, such as the material and shape of the iron core, the way the winding is wound,...

Claims

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Application Information

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IPC IPC(8): C09D167/06C09D183/04C09D7/06C09D7/00C09D7/47
CPCC08L2205/025C08L2205/035C09D7/65C09D167/06C08L83/04C08L33/00C08L61/14
Inventor 戴月平
Owner NANTONG HAIWANG ELECTRIC