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A kind of impregnation resin and preparation method thereof

A technology of impregnating resin and polyester resin, used in coatings, polyester coatings, etc., can solve the problems of insolubility, unfavorable structure control, failure, etc., to achieve high adhesion, excellent electrical properties and flexibility, curing low temperature effect

Active Publication Date: 2022-04-29
SUZHOU JUFENG ELECTRICAL INSULATION SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention patent (application number 201610591305.3) discloses an impregnating resin for electric vehicle motors with high paint-holding capacity. The patent uses hyperbranched polysiloxane prepared by hydrolysis reaction to increase the paint-holding capacity, but studies have shown that the hydrolytic condensation method prepares Hyperbranched polysiloxane has certain defects, such as easy to produce a variety of by-products, which is not conducive to structure control, and it is easy to form infusible and insoluble gel and fail, etc.

Method used

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  • A kind of impregnation resin and preparation method thereof
  • A kind of impregnation resin and preparation method thereof
  • A kind of impregnation resin and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0059]After mixing 150g of soybean oil, 11g of monoethanolamine, 15g of glycerin, and 0.2g of sodium methoxide, they were incubated at 180°C for 4 hours, and the reaction was stopped until the amine value was less than or equal to 2mgKOH / g to obtain an intermediate.

[0060] After mixing 500g of neopentyl glycol, 270g of maleic anhydride, 270g of phthalic anhydride, and 176g of intermediates, add 0.5g of hydroquinone, and keep the temperature at 210°C for 3 hours, and control the atmospheric temperature to ≤105°C until the acid value ≤28mgKOH / g, the reaction is stopped to obtain an oil-modified unsaturated polyester.

[0061] 40g oil-modified unsaturated polyester resin, 45g silicon-containing heat-resistant unsaturated polyester resin (JR01 resin produced by Nantong Tianhe Company), 20g styrene, 0.1g cobalt naphthenate, 0.8g diisoperoxide Propylbenzene, 0.06g of p-tert-butylcatechol, and 0.5g of hydrogenated castor oil are mixed evenly, then dispersed evenly under the action ...

Embodiment 2

[0063] (1) After mixing 130g of soybean oil, 9.5g of monoethanolamine, 20g of glycerin, and 0.2g of sodium methoxide, the mixture was incubated at 175°C for 3 hours, and the reaction was stopped until the amine value was less than or equal to 2mgKOH / g to obtain an intermediate.

[0064] (2) After mixing 525g of neopentyl glycol, 275g of maleic anhydride, 275g of phthalic anhydride, and 139.5g of intermediates, add 0.5g of hydroquinone, and keep the temperature at 205°C for 3.5 hours, and control the weather temperature to ≤105°C , stop the reaction until the acid value ≤ 28mgKOH / g, and obtain the oil-modified unsaturated polyester.

[0065] (3) 40g oil-modified unsaturated polyester resin, 40g silicon-containing heat-resistant unsaturated polyester resin (JR01 resin produced by Nantong Tianhe Company), 15g styrene, 0.1g cobalt naphthenate, 0.8g supernatant Mix dicumyl oxide, 0.06g p-tert-butylcatechol, and 0.5g white carbon black evenly, then disperse evenly under high shear a...

Embodiment 3

[0067] After mixing 120g of soybean oil, 8.7g of monoethanolamine, 25g of glycerin, and 0.2g of sodium methoxide, the mixture was incubated at 170°C for 2.5 hours, and the reaction was stopped until the amine value was less than or equal to 2mgKOH / g to obtain an intermediate.

[0068] After mixing 550g of neopentyl glycol, 278g of maleic anhydride, 276g of phthalic anhydride, and 128.7g of intermediates, add 0.5g of hydroquinone, and keep the temperature at 200°C for 4 hours. When the value is less than or equal to 28mgKOH / g, the reaction is stopped to obtain an oil-modified unsaturated polyester.

[0069] 45g oil-modified unsaturated polyester resin, 40g silicon-containing heat-resistant unsaturated polyester resin (JR01 resin produced by Nantong Tianhe Company), 12g styrene, 0.1g cobalt naphthenate, 0.8g diisoperoxide Propylbenzene, 0.06g of p-tert-butylcatechol, and 0.5g of hydrogenated castor oil are mixed evenly, then dispersed evenly under the action of high shear at a l...

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Abstract

The invention relates to an impregnating resin and a preparation method thereof, belonging to the field of electrical insulating materials, and aims to provide an impregnating resin with a high amount of hanging paint. The raw material formula of the impregnating resin of the present invention, in terms of mass percentage content, includes 35-50% of oil-modified unsaturated polyester resin, 35-45% of silicon-containing heat-resistant unsaturated polyester resin, and 10-20% of active crosslinking agent. %, auxiliary agent 0.5%~1.5%, thixotropic agent 0.01%~1%. The preparation method of the impregnating resin of the present invention is to mix the above-mentioned raw materials uniformly according to the formula, and then uniformly disperse the impregnated resin under the action of high shear at a line speed of 10-30 m / s, and filter to obtain the impregnated resin. The impregnating resin of the present invention not only has excellent electrical properties and flexibility, but also has high paint hanging capacity, high adhesive force, low curing temperature, short curing time and good storage stability, and is suitable for the insulation treatment of generators and motor stator coils.

Description

technical field [0001] The invention belongs to the field of motor insulation materials, and in particular relates to an impregnating resin and a preparation method. Background technique [0002] Motor insulation technology occupies an important position in motor manufacturing, and it has a direct relationship to the technical and economic indicators, operational reliability and life of the motor. At present, the main defects of the impregnating resin used for motors are the small amount of paint hanging and poor adhesion, which are mostly caused by the loss of paint liquid, which in turn reduces the weather resistance and water resistance of the motor. In order to solve the problem of the amount of paint hanging on the impregnation resin, the current solution is basically to add nano-silica to ensure the amount of paint hanging on, but the impregnating resin produced by this method has a high viscosity, is easy to precipitate, and has poor manufacturability. Therefore, the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D167/06C09D167/08C09D5/25C09D7/61C09D7/65C09D7/63C08G63/49C08G63/52
CPCC09D167/06C09D167/08C09D5/00C09D7/61C09D7/65C09D7/63C08G63/48C08G63/52C08L2205/02C08L2205/03C08L67/08C08L91/00C08L67/06C08K7/26
Inventor 夏宇莫耀翔周成
Owner SUZHOU JUFENG ELECTRICAL INSULATION SYST
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