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High heat-resistant environment-friendly refrigerant-resistant insulating impregnation resin and preparation method thereof

An insulating impregnated and environmentally friendly technology, which is applied in the field of high heat-resistant and environmentally friendly refrigerant-resistant insulating impregnated resin and its preparation, can solve the problem that the heat-resistant temperature cannot be reached.

Active Publication Date: 2021-08-17
山西博拉哲绝缘技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the heat-resistant temperature still cannot reach the high heat-resistant environment-friendly refrigerant insulating impregnated resin higher than 200°C

Method used

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  • High heat-resistant environment-friendly refrigerant-resistant insulating impregnation resin and preparation method thereof
  • High heat-resistant environment-friendly refrigerant-resistant insulating impregnation resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1: The formulation of the high heat-resistant environment-friendly refrigerant-resistant insulating impregnation resin prepared in this example is as follows: 600 g of unsaturated polyester resin; 280 g of imine epoxy resin solution with a solid content of 50%; Diallyl phthalate) 150g; crosslinking agent (p-tert-butylstyrene) 30g; curing agent (594 boron amine) 12.5g; initiator (dicumyl peroxide) 17.5g; inhibitor ( Hydroquinone) 0.24g.

[0025] The preparation method of the high heat-resistant environment-friendly refrigerant-resistant insulating impregnated resin comprises the following steps:

[0026] (1) Preparation of unsaturated polyester resin: Add 22.8g propylene glycol, 83.3g neopentyl glycol, 49.8g isophthalic acid, 29.2g adipic acid, 49g maleic anhydride and 0.5 g p-toluenesulfonic acid, slowly raise the temperature to 200°C under the protection of nitrogen, react for 5~6h, when the acid value drops below 20mgKOH / g, cool down to 130°C, and discharge. ...

Embodiment 2

[0029] Embodiment 2: The formulation of the high heat-resistant environment-friendly refrigerant-resistant insulating impregnated resin of this embodiment is as follows:

[0030] 855g of unsaturated polyester resin; 265g of imide epoxy resin solution with a solid content of 60%; 206g of crosslinking agent (diallyl phthalate); 148g of crosslinking agent (divinylbenzene); curing agent ( phenol formaldehyde resin) 45.8g; initiator (dicumyl peroxide) 22.6g; polymerization inhibitor (p-tert-butylcatechol) 0.18g; polymerization inhibitor (hydroquinone) 0.16g.

[0031] The preparation method of the high heat-resistant environment-friendly refrigerant-resistant insulating impregnated resin comprises the following steps:

[0032] (1) Preparation of unsaturated polyester resin: Add 31.8g of diethylene glycol, 83.3g of neopentyl glycol, 49.8g of isophthalic acid, 30.4g of tetrahydrophthalic anhydride, 49g of cisbutane in a standard three-necked flask Elenic anhydride and 0.5g p-toluenesul...

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Abstract

The invention belongs to the technical field of electrical insulating impregnating varnish, and provides a high heat-resistant and environment-friendly refrigerant-resistant insulating impregnating resin and a preparation method thereof. It is prepared from unsaturated polyester resin; imide epoxy resin solution with a solid content of 50%~60%; crosslinking agent; curing agent; initiator and polymerization inhibitor according to a certain proportion, the raw material of unsaturated polyester resin The formula includes a first monomer and a second monomer, the first monomer is one or more selected from diethylene glycol, propylene glycol, and neopentyl glycol; the second monomer is selected from butene One or more of dianhydride and phthalic anhydride, tetrahydrophthalic anhydride, methyltetrahydrophthalic anhydride, isophthalic acid and adipic acid. The insulation impregnation resin of the present invention is resistant to high temperature of 240°C, has no volatilization, no odor, low VOC content, is resistant to new refrigerants such as R134a and R1234ze, and can be used for impregnation and insulation treatment of various high and low voltage refrigerant-resistant motors, transformers and other motor electrical winding coils.

Description

technical field [0001] The invention belongs to the technical field of electrical insulating impregnating varnish, and in particular relates to a high heat-resistant and environment-friendly refrigerant-resistant insulating impregnating resin and a preparation method thereof. Background technique [0002] After the winding coils of electrical appliances such as motors and transformers are treated with VPI dipping paint, they are baked and cured to form a whole, which improves the insulation performance and mechanical strength, improves the ability to resist moisture and salt spray, enhances operational reliability, and prolongs service life. One of the most important links in the motor manufacturing process. Refrigerant-cooled motors, the windings are exposed to refrigerant for a long time, because traditional refrigerants can destroy the high-altitude ozone layer, resulting in global warming. my country will ban "Freon" refrigerants as soon as possible. Therefore, new env...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D167/06C09D163/00C09D5/25C08G63/52C08G63/676C08G59/14
CPCC08G59/1477C08G63/52C08G63/676C08L2201/08C08L2203/20C09D5/00C09D5/18C09D167/06C08L63/00
Inventor 郑国喜
Owner 山西博拉哲绝缘技术有限公司
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