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Organosilicon drying insulating varnish and preparation method thereof

A technology of insulating varnish and silicone, applied in the direction of coating, etc., can solve problems such as poor water resistance, poor water resistance, and heat resistance that cannot meet the requirements, and achieve convenient construction, wide application range, and high breakdown strength index Effect

Active Publication Date: 2017-01-04
天津灯塔涂料工业发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its used ammonium polyphosphate mainly plays flame-retardant effect, and water resistance is relatively poor (the water resistance of flame-retardant pigment is all poor), and the water resistance after hydroxyethyl cellulose is made into paint film is also bad, whether this disclosed paint With insulation performance index
The blend of silicone resin 28-35 and alkyd resin 18-22 in the formula can improve the heat resistance, but it can be impregnated in the short-term (250-300) ℃ working environment of electrical coils and long-term in 180-200 ℃ The medium and long-term heat resistance of the electrical coil of the running motor cannot meet the requirements

Method used

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  • Organosilicon drying insulating varnish and preparation method thereof
  • Organosilicon drying insulating varnish and preparation method thereof
  • Organosilicon drying insulating varnish and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A kind of organosilicon drying insulation varnish, comprises following components, by weight (g),

[0022]

[0023] The self-made concentrated silanol is made up of the following components, by weight (g),

[0024]

[0025] The self-made concentrated silanol preparation method of embodiment 1, carry out as follows,

[0026] ①Mix 15g of 98.5% monophenyltrichlorosilane, 5g of 98.5% diphenyldichlorosilane, 5g of 99% dimethyldichlorosilane and 5g of 98% methylphenyldichlorosilane with petroleum Add 15g of toluene to the dropping tank, stir for 10 minutes, and mix well to make a mixed monomer for later use;

[0027] ②Put 40g of tap water and 5g of the remaining petroleum-mixed xylene into the hydrolysis kettle, start stirring, pass cold water through the jacket, control the hydrolysis temperature at 35-50°C, and start to drop the mixed monomer in step ① at the same time. After the dropwise addition, continue to stir for 10 minutes, stop stirring and stop the jacket t...

Embodiment 2

[0031] A kind of organosilicon drying insulation varnish, comprises following components, by weight (g),

[0032]

[0033] The self-made concentrated silanol is made up of the following components, by weight (g),

[0034]

[0035] Carry out according to the self-made concentrated silanol preparation method of embodiment 1.

Embodiment 3

[0037] A kind of organosilicon drying insulation varnish, comprises following components, by weight (g),

[0038]

[0039] The self-made concentrated silanol is made up of the following components, by weight (g),

[0040]

[0041] Carry out according to the self-made concentrated silanol preparation method of embodiment 1.

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Abstract

The invention relates to an organic silicon drying insulating varnish, which comprises the following components, in parts by weight, self-made concentrated silanol 50-70, catalyst 0.5-2.0, end-capping agent 0.5-2.0, and xylene 30-50; Describe the components of self-made concentrated silanols: tap water 40-60, petroleum mixed xylene 20-40, 98.5% diphenyltrichlorosilane 5-15, 98.5% diphenyldichlorosilane 5-10, 99% Dimethyldichlorosilane 5‑10, 98% methylphenyldichlorosilane 1‑5. Preparation method Add the concentrated silanol to the reaction kettle, stir and add the catalyst, mix evenly and heat up to evaporate the solvent, the gelation time is 60-90 seconds / 200°C, add xylene, end-capping agent and catalyst, stir and filter. Beneficial effect: it has excellent performances of heat resistance, insulation, chemical corrosion resistance, electric arc resistance, salt spray resistance, moisture resistance and mildew resistance, and belongs to H-class insulation material.

Description

technical field [0001] The invention belongs to chemical coatings, in particular to an organic silicon drying insulating varnish and a preparation method thereof. Background technique [0002] Ordinary insulating varnishes such as ester glue drying insulating varnish and phenolic drying insulating varnish belong to Class A insulating varnish, with a heat-resistant temperature of 85°C, narrow application range, and electrical properties that cannot meet the requirements; alkyd drying insulating varnish belongs to Class B Insulating varnish, its electrical properties can meet the requirements of general insulating varnish, but its moisture resistance, salt spray resistance and mildew resistance are not good, and its heat resistance and wet breakdown strength cannot meet the high index requirements, so it is not suitable for high-level humid tropical Coating of electrical appliances, motors, instruments and other shells used. The maximum temperature allowed by the insulation c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D183/06C08G77/16C08G77/06
Inventor 黄继伟王培明刘建颖王宏心黄震袁晓波张玉彬陈晖
Owner 天津灯塔涂料工业发展有限公司
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