Preparation method for organic silicon impregnating varnish

A technology of organosilicon impregnation and organosilicon, applied in the direction of coating, etc., can solve the problems of poor internal dryness, poor production safety, serious environmental pollution, etc.

Active Publication Date: 2016-02-03
ZHUZHOU TIMES ELECTRIC INSULATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the 1950s and 1960s, organic solvent resins were commonly used in electrical insulating impregnating varnishes. They generally contain about 50% solvent, requiring multiple dipping, poor internal dryness, long impregnation process time, serious environmental pollution, and poor production safety.
The development and promotion of pure resin paints began in the 1970s, but most pure resin paints are "quas...

Method used

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  • Preparation method for organic silicon impregnating varnish
  • Preparation method for organic silicon impregnating varnish

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Take 0.6mol of monophenyltrimethoxysilane, 0.1mol of dimethyldiethoxysilane, 0.4mol of methylvinyldimethoxysilane, 0.1mol of diphenyldimethoxysilane, and 0.1mol of hexamethyldisilane Oxane 0.2mol, at a temperature of 50°C, slowly add the organosilicon mixed monomer dropwise at a speed of 5L / min to the mixed solution composed of water and organic solvent with rapid stirring, and the dropwise hydrolysis reaction lasts for 5 hours, during which Keep the hydrolysis reaction temperature not exceeding 60°C, continue stirring for 2 hours after the dropwise addition, remove the acid water layer by layer, separate the organic solvent layer of the resin, then wash with water until neutral, and heat up until the organic solvent layer of the silicone resin boils , concentrated under reflux for 4 hours, and then filtered to obtain a solution of the organosilicon hydrolysis condensation prepolymer; filter the organosilicon solution, and then remove the solvent used for hydrolysis unde...

Embodiment 2

[0041] Take 0.8mol of phenyltrimethoxysilane, 0.1mol of methyltrimethoxysilane, 0.1mol of dimethyldiethoxysilane, 0.4mol of dimethylvinylmethoxysilane, and 0.4mol of methylphenyldimethoxysilane 0.2 mol of base silane and 0.2 mol of hexamethyldisiloxane, at a temperature of 50°C, slowly add the organosilicon mixed monomer dropwise at a rate of 3 L / min into the mixed solution composed of water and organic solvent with rapid stirring , the dropwise hydrolysis reaction continued for 5 hours, during which the hydrolysis reaction temperature was kept not exceeding 60°C, and the stirring was continued for 2 hours after the dropwise addition, and the acid water was removed in layers, and the organic solvent layer of the resin was separated, and then washed with water until neutral. Raise the temperature until the organic solvent layer of the silicone resin boils, concentrate under reflux for 4 hours, and then filter to obtain a solution of the silicone hydrolysis condensation prepolyme...

Embodiment 3

[0045] Take 0.7mol of monophenyltrimethoxysilane, 0.1mol of dimethyldiethoxysilane, 0.45mol of vinyltriethoxysilane, 0.2mol of diphenyldimethoxysilane, and 0.2mol of hexamethyldisiloxane 0.2mol, at a temperature of 50°C, slowly add the organosilicon mixed monomer dropwise at a speed of 8L / min to the mixed solution composed of water and organic solvent with rapid stirring, and the dropwise hydrolysis reaction lasts for 5 hours, during which it keeps The temperature of the hydrolysis reaction does not exceed 60°C. After the dropwise addition, continue to stir for 2 hours, remove the acid water layer by layer, separate the organic solvent layer of the resin, and then wash it with water until it is neutral, and heat up to the organic solvent layer of the silicone resin. Concentrate under reflux for 4 hours, and then filter to obtain a solution of the organosilicon hydrolysis condensation prepolymer; filter the organosilicon solution, and then remove the solvent used for hydrolysis ...

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Abstract

The invention relates to the field of oil paint chemical engineering and especially relates to organic silicon impregnating varnish, and a preparation method and an application thereof. The organic silicon impregnating varnish is acquired through the hydrolytic condensation of silane monomers and is further acquired through the hydrolytic condensation of the silane monomers containing full alkoxy. The pure resin type organic silicon impregnating varnish not only has the advantages of excellent insulating properties, such as, high heat resistance, hydrophobic property, pressure-withstanding anti-corona property, and the like, and environmental protection, but also has the advantages of excellent adhesive force and bonding strength to the impregnated substrates, so that the phenomena of cracking and insulating painting falling caused by vibration of machinery (such as, high-speed running locomotive, mining machinery, wind power generation equipment, and the like) and heat effect are resisted and avoided.

Description

technical field [0001] The invention relates to the field of paint chemical industry, in particular to a preparation method of organosilicon impregnated paint. Background technique [0002] Insulating materials are essential materials in motors and electrical equipment, and the performance, quality and service life of these electrical equipment depend to a large extent on the insulating materials used. With the continuous advancement of science and technology, electrical appliances and other equipment are developing in the direction of large capacity, miniaturization, high efficiency, durability and intelligence, while power transmission and transformation products are developing in the direction of high voltage, large capacity and long-distance transmission, especially in recent decades. The application of frequency conversion speed regulation technology has put forward higher and higher requirements for the quality and reliability of electrical insulation materials. The r...

Claims

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Application Information

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IPC IPC(8): C09D183/07C09D183/05C09D5/25C08G77/20C08G77/12
Inventor 衷敬和陈磊陈晓周光红姜其斌
Owner ZHUZHOU TIMES ELECTRIC INSULATION
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