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High-varnish hanging amount solventless impregnating resin and preparation method thereof

An impregnating resin and solvent-free technology, which is applied in the field of solvent-free impregnating resin with high hanging paint and its preparation, can solve the problems of low loss, environmental pollution, low volatility, etc., and achieve good storage stability, good manufacturability, and high viscosity The effect of high knot strength

Inactive Publication Date: 2014-01-29
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 and vinyltoluene solvent-free impregnating resins, the present invention uses polyesterimide and low-viscosity epoxy acrylate as matrix resin, and uses high-boiling point multifunctional acrylate as active exchange resin. Combined monomer, by adding nano-powder and rheological additives, the fluidity of the resin during use is improved, so that the resin has low volatility and low loss, so that it is truly VOC-free, non-toxic, and environmentally friendly. Solvent-free impregnation resin with high paint hang-up due to advanced impregnation process

Method used

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  • High-varnish hanging amount solventless impregnating resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Weigh 340g of JF-158 into a 500ml three-neck flask, raise the temperature to 105°C, and slowly add 48.2g of acrylic acid solution dropwise, wherein the acrylic acid solution is a mixed solution composed of 45g of acrylic acid, 0.2g of hydroquinone and 0.4g of benzylamine. After about 0.5 hours of the dropwise addition, the temperature was raised to about 120°C, the reaction was carried out until the acid value dropped below 5 mg-KOH / g, and then cooled to room temperature to obtain low-viscosity epoxy acrylate (A).

[0038] Weigh 200g JF-9956, 200g low-viscosity epoxy acrylate (A), 180g 1,6-hexanediol dimethacrylate, 160g 1,4-butanediol dimethacrylate in a 1000ml three-necked flask , heated to 90-120°C, stirred evenly, cooled to 50-60°C, added 8g of zinc isooctanoate, 7.5g of dicumyl peroxide, 0.5g of tert-butylcatechol, stirred evenly, and a solvent-free impregnating resin was obtained.

[0039] Add 7.5g of fumed silica and 3.7g of BYK410 into the solvent-free impregnat...

Embodiment 2

[0041] Weigh 800g of JF-158 into a 2000ml three-neck flask, raise the temperature to 90°C, and slowly add 152.5g of acrylic acid solution dropwise, wherein the acrylic acid solution is a mixed solution consisting of 144g of acrylic acid, 0.5g of hydroquinone and 2.4g of benzylamine. After about 1 hour of dropwise addition, the temperature was raised to about 125°C, and the reaction was carried out until the acid value dropped below 5 mg-KOH / g, and then cooled to room temperature to obtain low-viscosity epoxy acrylate (B).

[0042] Weigh 400g JF-9956, 300g low-viscosity epoxy acrylate (B), 350g propoxylated neopentyl glycol diacrylate, 200g tripropylene glycol diacrylate and 130g 1,4-butanediol dimethyl In a 2000ml three-neck flask, heat up to 90-100°C, stir evenly, cool down to 50-60°C, add 7g of zinc isooctanoate, 13g of dicumyl peroxide, and 0.6g of p-benzoquinone, dissolve evenly, and filter , packaged in solvent-free impregnated resins.

[0043] Add 18g of fumed aluminum ...

Embodiment 3

[0045]Take by weighing 300g JF-9956-1, the low-viscosity epoxy acrylate (B) synthesized by 400g embodiment 2, 400g 1,4-butanediol dimethacrylate and 200g dimethacrylate triethylene glycol Esters, 60g of trimethylolpropane trimethacrylate in a 2000ml three-necked flask, heated to 90-100°C, stirred evenly, cooled to 50-60°C, added 16g of zinc acetylacetonate, 14g of (2-ethyl peroxide ) tert-butyl hexanoate, 0.7g of hydroquinone, dissolved uniformly, filtered, and packaged to obtain a solvent-free impregnated resin matrix. Add 15g of fumed silica and 8g of DeuRHeo 2810 into the solvent-free impregnating resin matrix, and uniformly disperse for 6 minutes under the shearing effect of a homogeneous emulsifier at a line speed of 13m / s. Filtered, packaged high hang paint solvent free impregnation resin.

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Abstract

The invention discloses high-varnish hanging amount solventless impregnating resin and a preparation method thereof. The high-varnish hanging amount solventless impregnating resin comprises the following components in parts by weight: 20-40% of polyester-imide resin, 20-40% of low-viscosity epoxy acrylate, 40-60% of active crosslinking monomer, 1-2% of nano-powder, 0.2-2% of rheology auxiliary, 0.5-2% of epoxy curing agent, 0.8-2% of initiator and 0.04-0.6% of polymerization inhibitor. The impregnating resin has the characteristics of high varnish hanging amount, no VOC (Volatile Organic Compound), no toxicity, safety, environmental friendliness, good heat resistance (above level H), high electrical strength, good tenacity, high bonding strength and the like; the impregnating resin is applicable to conventional immersion, trickle immersion, rolling immersion, VI (Vacuum Impregnating) and VPI (Vacuum Pressure Impregnating) insulating treatment processes.

Description

technical field [0001] The invention relates to a solvent-free impregnating resin with a high paint-hanging volume and a preparation method thereof, in particular to a VOC-free, non-toxic and environment-friendly solvent-free impregnating resin with a high paint-hanging volume, which is mainly used in the insulation impregnation treatment of winding coils of motors and electrical 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. A high amount of paint is conducive to improving the electrical insulation performance of the motor winding, enhancing the mechanical properties of the winding, is conducive to improving the moisture resistance, mildew resistance, salt spray resistance and corrosion resistance of the motor, and enhancin...

Claims

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Application Information

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IPC IPC(8): C09D163/10C09D7/12C08G59/17
Inventor 徐伟红周成夏宇
Owner SUZHOU JUFENG ELECTRICAL INSULATION SYST
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