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Environment-friendly VPI impregnated resin for wind driven generator and preparation method thereof

A wind turbine and resin-impregnated technology, applied in epoxy resin coatings, circuits, electrical components, etc., can solve the problems of large curing volatile content, low bonding strength, large dielectric loss, etc., and achieve low viscosity and high adhesion. The effect of strength, low dielectric loss

Active Publication Date: 2017-06-09
浙江博菲电气股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the impregnating resin formula has high heat resistance, most of them have the problems of large dielectric loss, low bonding strength, and high water absorption, and the active diluent is added to the formula, and there is also the problem of large curing volatiles.

Method used

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  • Environment-friendly VPI impregnated resin for wind driven generator and preparation method thereof
  • Environment-friendly VPI impregnated resin for wind driven generator and preparation method thereof
  • Environment-friendly VPI impregnated resin for wind driven generator and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] In the present embodiment, the formula of environment-friendly type wind power generator VPI impregnated resin is as follows:

[0038] The heat-resistant bicyclic unsaturated polyester is composed of a molar ratio of dicyclopentadiene:maleic anhydride:neopentyl glycol:terephthalic acid:fumaric acid:methylpropanediol=0.6:0.5:2.3:1.0:1.0: Various monomers of 0.6 are prepared by polycondensation reaction.

[0039] The heat-resistant bicyclic unsaturated polyester system is obtained by mixing the heat-resistant bicyclic unsaturated polyester prepared above with trimethylolpropane diallyl ester (TMPTA) at a mass ratio of 6:4.

[0040] The modified epoxy resin is obtained by adding unsaturated polyester and epoxy resin (bisphenol A type epoxy resin) in a mass ratio of 10:100 and then adding them.

[0041] The unsaturated polyester is composed of various monomers with a molar ratio of phthalic anhydride: neopentyl glycol: diethylene glycol: benzoic acid: dimethylol propionic ...

Embodiment 2

[0046] The formula of the environment-friendly wind power generator of this example VPI impregnated resin is:

[0047] 50 grams of heat-resistant bicyclic unsaturated polyester, 30 grams of modified epoxy resin, 1.4 grams of benzoyl peroxide (BPO) as the initiator, 10 grams of phthalic acid diacrylate (DAP) as the crosslinking agent, and 10 grams of curing agent It is 5 grams of tung oil anhydride and 0.6 g of accelerator aluminum acetylacetonate.

[0048] After the above-mentioned components are uniformly mixed according to the formula, and then mixed with other components uniformly according to the formula, the environment-friendly VPI impregnated resin for wind power generators is obtained. When the impregnating resin is used, it should firstly be cured at 140-150°C for 4-6 hours, and then be cured at 170-180°C for 8-10 hours to form a film.

Embodiment 3

[0050] The formula of the environment-friendly wind power generator of this example VPI impregnated resin is:

[0051] 50 grams of heat-resistant bicyclic unsaturated polyester, 30 grams of modified epoxy resin, 1.6 grams of benzoyl peroxide (BPO) as the initiator, 10 grams of dodecyl allyl ester as the crosslinking agent, and 10 grams of phthalate 5 grams of formic acid diacrylate (DAP), 3 grams of phenylimidazole as a curing agent, and 0.6 g of an accelerator aluminum acetylacetonate.

[0052] After the above-mentioned components are uniformly mixed according to the formula, and then mixed with other components uniformly according to the formula, the environment-friendly VPI impregnated resin for wind power generators is obtained. When the impregnating resin is used, it should firstly be cured at 140-150°C for 4-6 hours, and then be cured at 170-180°C for 8-10 hours to form a film.

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Abstract

The invention discloses environment-friendly VPI impregnated resin for a wind driven generator. The environment-friendly VPI impregnated resin comprises the following components by weight percent: heat-resistant bicyclic unsaturated polyester resin system, modified epoxy resin, a crosslinking agent, an initiator, a curing agent and an accelerator, wherein the heat-resistant bicyclic unsaturated polyester resin system consists of heat-resistant bicyclic unsaturated polyester resin and a crosslinking agent, and the system viscosity is 300-400s; the heat-resistant bicyclic unsaturated polyester resin is prepared through a condensation polymerization reaction of dicyclopentadiene, at least one polybasic acid and at least one polyhydric alcohol; the crosslinking agent is at least one of glycidyl methacrylate, dodecyl allyl acid ester, diacrylate phthalate and trimethylolpropane diallyl ester; and the modified epoxy resin is prepared by modifying unsaturated polyester. The impregnated resin has the characteristics of good storage stability, good heat resistance, high mechanical strength of cured products, high bonding strength, good electrical insulation property, low dielectric loss, low water absorption and the like and is widely applicable.

Description

technical field [0001] The invention relates to the field of preparation of impregnating paint, in particular to an environment-friendly VPI impregnating resin for wind power generators and a preparation method thereof. Background technique [0002] VPI is the abbreviation of vacuum pressure impregnation process, that is, Vacuum Pressure Impregnating. VPI is an important process in the production of electrical appliances and electrical materials such as high-voltage motors, transformers, power capacitors, and paper-insulated high-voltage power cables. After the VPI process, the above products have good insulation performance, reduced temperature rise, improved efficiency, and increased machinery Strength, solve the loosening phenomenon during operation, prevent insulation failures such as short circuits, improve moisture resistance, and prolong service life. [0003] At present, domestic motor manufacturers basically use VPI technology in the production of high-voltage moto...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D167/06C09D163/00C09D5/25C09D7/12
CPCC08L2201/08C08L2203/20C09D7/63C09D167/06H01B3/307C08L63/00
Inventor 吴化军许坤陈瑞程薇
Owner 浙江博菲电气股份有限公司
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