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Environmentally-friendly type solvent-free impregnating resin and preparation method thereof

An impregnating resin and solvent-free technology, which is applied in the field of environmentally friendly solvent-free impregnating resin and its preparation, can solve the problems of low volatile matter, low viscosity, environmental pollution, etc., and achieve the effect of shortening baking time and no volatile loss

Inactive Publication Date: 2011-10-26
SUZHOU JUFENG ELECTRICAL INSULATION SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the waste of resources and environmental pollution of styrene-based solvent-free impregnating resins, the purpose of the present invention is to introduce a low-viscosity improvement on the basis of maintaining the excellent dielectric properties and heat resistance of the original unsaturated polyester impregnating resins. Non-toxic epoxy resin, combined with a new type of acrylate cross-linking monomer with high reactivity, prepares an environmentally friendly solvent-free impregnating resin that does not contain toxic solvents, low viscosity, odorless, and low volatile

Method used

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  • Environmentally-friendly type solvent-free impregnating resin and preparation method thereof
  • Environmentally-friendly type solvent-free impregnating resin and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0039] Weigh 200g of glycidyl methacrylate into a three-necked flask, heat up to 80°C, add dropwise a mixed solution of 100g of acrylic acid, 0.3g of hydroquinone, and 2.8g of benzylamine, and heat up to 115°C after about 1 hour of dropping , After reacting for 5 hours, vacuumize to remove unreacted acrylic acid and other small molecular substances, and cool to room temperature to obtain a low-viscosity modified epoxy resin (A).

[0040] Take by weighing 100g isophthalic unsaturated polyester resin, 58.68g low-viscosity modified epoxy resin (A), 78.51g 1,6-hexanediol diacrylate, 0.1g hydroquinone, 2.37g dihydrogen peroxide Cumene, 1.54g zinc isooctanoate, stirred evenly to obtain environment-friendly, low-volatility solvent-free impregnating resin.

Embodiment 2

[0042] Weigh 200g of bisphenol A type epoxy resin E-51 purified by molecular distillation technology in a three-necked flask, heat up to 80°C, add dropwise a mixed solution of 47g of acrylic acid, 0.24g of hydroquinone, and 2.5g of benzylamine. After about 0.5h of dropwise addition, heat up to 130°C, and when the acid value is less than 3mg-KOH / g, vacuumize to remove unreacted acrylic acid and other small molecular substances, and cool to room temperature to obtain a modified epoxy resin ( B).

[0043] Take by weighing 100g unsaturated polyesterimide resin, 25g modified epoxy resin (B), 71.43g 1,6-hexanediol diacrylate hexanediol diacrylate, 13.5g ethylene glycol dimethacrylate , 25g cyclohexyl methacrylate, 0.15g hydroquinone, 2.3g benzoyl peroxide, 0.2g aluminum acetylacetonate, 0.75g zinc naphthenate, stir evenly to obtain environmentally friendly, low-volatile solvent-free polyester sub Amine impregnated resin.

[0044] The prepared environment-friendly, low-volatility, ...

Embodiment 3

[0049] Take the unsaturated polyester resin modified by 100g N-phenylmaleimide, the modified epoxy resin (B) synthesized by 10g embodiment 2, 70.58g dicyclopentadiene acrylate, 20.32g methacrylic acid Phenyl ester, 10.79g diethylene glycol dimethacrylate, 10g glycerol dimethacrylate, 0.2g p-benzoquinone, 2.3g benzoyl peroxide, 0.2g zinc isooctanoate, stir evenly to prepare high-resistant Environmentally friendly solvent-free impregnation resin with thermal properties and low volatility.

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Abstract

The invention discloses an environmentally-friendly type solvent-free impregnating resin and a preparation method thereof. The impregnating resin comprises: 100 parts by weight of one or more high heat-resistant unsaturated polyester resins, 0 to 100 parts by weight of one or more modified epoxy resins, 50 to 200 parts by weight of one or more novel reactive diluents, 0.1 to 1 parts by weight of one or more polymerization inhibitors, 1.5 to 3.8 parts by weight of one or more initiators and 0 to 2 parts by weight of one or more auxiliary agents. Under the same work conditions, a baking time of the solvent-free impregnating resin is less than about one third of a baking time of the existing conventional solvent-free type impregnating resin utilized for middle and low voltage motors and transformers, and an energy consumption of the solvent-free impregnating resin is lower than about 25% of an energy consumption of the existing conventional solvent-free type impregnating resin middle and low voltage motors and transformers.

Description

technical field [0001] The invention relates to an environment-friendly solvent-free impregnating resin and a preparation method thereof, which are mainly used in the insulation impregnation treatment of winding coils of medium and low voltage motors and electric appliances. Background technique [0002] Impregnating resin is a kind of insulating material, which is mainly used in the insulation impregnation treatment of motors, transformers and loose embedded winding coils, and plays the role of electrical insulation, bonding molding and moisture resistance. At present, the impregnating resins used for high and low voltage motors and electrical appliances at home and abroad are mainly diluted with toxic solvents such as styrene and vinyltoluene. During the curing process, the volatile content is large and the smell is strong, causing serious environmental pollution and waste of resources. In consideration of the environment, resources and human life and health, it is imminen...

Claims

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Application Information

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IPC IPC(8): C08F283/01C08F290/06C08G59/17H01F41/12H02K15/10H02K15/12
Inventor 徐伟红周成夏宇胡兆楠郭胜智
Owner SUZHOU JUFENG ELECTRICAL INSULATION SYST
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