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Resource-saving low-temperature rapid curing insulating impregnated resin and preparation method thereof

A fast-curing, insulating impregnation technology, applied in the field of insulating impregnating resins, can solve the problems of high solvent content, short pot life, and unenvironmental protection of solvent insulating paints, and achieve improved flexibility and adhesion, long pot life, and low VOC emissions. Effect

Active Publication Date: 2013-11-27
SUZHOU JUFENG ELECTRICAL INSULATION SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is a high solvent content in insulating varnishes with solvents, and a large amount of solvents generated during the baking process evaporate, which is neither safe nor environmentally friendly
The low-temperature and quick-drying solvent-free impregnating resins are mostly continuous immersion or dripping varnishes, and the pot life is very short. The market urgently needs a solvent-free insulating impregnation resin that can meet the requirements of ordinary immersion and vacuum impregnation.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] According to the formulation of the resource-saving low-temperature fast-curing insulating impregnating resin of this embodiment is as follows:

[0031] Solid content is 42.5kg of DCPD modified unsaturated polyester resin of 70wt%;

[0032] Solid content is 33.1kg of acrylic acid modified epoxy soybean oil of 80wt%;

[0033] Styrene 23.3kg

[0034] Dicumyl peroxide 1.15kg

[0035] Dibenzoyl peroxide 0.24kg

[0036] p-tert-butylcatechol 0.03kg.

[0037] The preparation of the resource-saving low-temperature fast-curing insulating impregnation resin comprises the following steps:

[0038] (1) Preparation of DCPD modified unsaturated polyester resin with a solid content of 70wt%. Add 490.3g of maleic anhydride and 90.0g of water into a standard four-necked flask, feed nitrogen, start stirring and slowly raise the temperature. When the temperature rises to 140°C, start to add 661.0g of DCPD dropwise, and at the same time slowly raise the temperature to 180°C, keep it w...

Embodiment 2

[0042] According to the formulation of the resource-saving low-temperature fast-curing insulating impregnating resin of this embodiment is as follows:

[0043] Solid content is 61.4kg of DCPD modified unsaturated polyester resin of 70wt%;

[0044] Solid content is 18.8kg of acrylic acid modified epoxy soybean oil of 80wt%;

[0045] Vinyl toluene 18.4kg

[0046] Dicumyl peroxide 0.88kg

[0047] Tert-butyl peroxybenzoate 0.52kg

[0048] Hydroquinone 0.04kg.

[0049] The preparation of the resource-saving low-temperature fast-curing insulating impregnation resin comprises the following steps:

[0050] (1) Preparation of DCPD modified unsaturated polyester resin with a solid content of 70wt%. Add 490.3g of maleic anhydride and 90.0g of water into a standard four-necked flask, feed nitrogen, start stirring and slowly raise the temperature. When the temperature rises to 140°C, start to add 661.0g of DCPD dropwise, and at the same time slowly raise the temperature to 180°C, keep...

Embodiment 3

[0054] According to the formulation of the resource-saving low-temperature fast-curing insulating impregnating resin of this embodiment is as follows:

[0055] Solid content is 53.6kg of DCPD modified unsaturated polyester resin of 70wt%;

[0056] Solid content is 25.3kg of acrylic acid modified epoxy soybean oil of 80wt%;

[0057] Vinyl toluene 13.8kg

[0058] Diallyl phthalate 10.2kg

[0059] Dicumyl peroxide 0.98kg

[0060] tert-butyl peroxybenzoate 0.44kg

[0061] p-tert-butylcatechol 0.036kg

[0062] The preparation of the resource-saving low-temperature fast-curing insulating impregnation resin comprises the following steps:

[0063] (1) Preparation of DCPD modified unsaturated polyester resin with a solid content of 70wt%. Add 490.3g of maleic anhydride and 90.0g of water into a standard four-necked flask, feed nitrogen, start stirring and slowly raise the temperature. When the temperature rises to 140°C, start to add 661.0g of DCPD dropwise, and at the same time ...

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Abstract

The invention relates to a method for preparing resource-saving low-temperature rapid curing insulating impregnated resin by utilizing an oil refining by-product and renewable resource vegetable oil. The impregnated resin consists of the following components: 40-65 parts of DCPD (Dicyclopentadien) modified unsaturated polyester resin with 65wt%-75wt% of solid content, 15-35 parts of acrylic modified epoxy soybean oil with 75wt%-85wt% of solid content, 15-25 parts of reactive diluent, 0.5-2.0 parts of high-temperature initiator, 0.1-1.0 part of low-temperature initiator, and 0.01-0.06 part of polymerization inhibitor. The impregnated resin is stored in mono-component with long working life and can be cured at 80-100 DEG C, thus saving energy.

Description

technical field [0001] The invention belongs to the technical field of insulating impregnating resin, and in particular relates to a resource-saving low-temperature fast-curing insulating impregnating resin and a preparation method thereof. Background technique [0002] The windings of motors, transformers and other electrical appliances need to be treated with insulation and varnish before they can run safely and reliably. After the winding coil is treated with insulating varnish, it is baked and solidified into a whole, which improves the insulation performance and mechanical strength, improves the ability of moisture resistance and salt spray resistance, enhances the operation reliability, and prolongs the service life. It is the most important link in the motor manufacturing process. one. [0003] The current raw materials for insulating resin manufacturing, such as phthalic anhydride, maleic anhydride, propylene glycol, neopentyl glycol, and epoxy resin, are all petrol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/06C08K5/1515C08G63/553
Inventor 徐伟红袁世臻何少波汝国兴安小珍郭胜智
Owner SUZHOU JUFENG ELECTRICAL INSULATION SYST
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