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Preparation method of nanometer modified corona-tolerant enamel of enameled wire

A wire enamel and nano-modification technology, which is applied in coatings, polyester coatings, polyurea/polyurethane coatings, etc., can solve problems such as difficult dispersion, improve dispersion state, improve flexibility and adhesion, and store stability Effect

Active Publication Date: 2004-11-17
江苏东材新材料有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention overcomes the disadvantages that inorganic nanoparticles are agglomerated and difficult to disperse in high-viscosity, high-solid-content insulating electromagnetic varnish, and provides a method for dispersing inorganic nanoparticles in an organic solvent, and then using a surface treatment agent to coat the surface of the particles. For further processing, high-performance corona-resistant electromagnetic wire varnish is prepared by in-situ composite method. The electromagnetic wire insulating varnish has good storage stability, corona resistance, adhesion and all the properties of high-performance enameled wire varnish. performance

Method used

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  • Preparation method of nanometer modified corona-tolerant enamel of enameled wire
  • Preparation method of nanometer modified corona-tolerant enamel of enameled wire
  • Preparation method of nanometer modified corona-tolerant enamel of enameled wire

Examples

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Embodiment 1

[0052] A preparation method for nano-modified corona-resistant wire enamel, comprising the following steps:

[0053] (1) dispersion of nanomaterials: get 14 parts (weight, the same afterward) nano-titanium oxide, add 70 parts of organic solvents (cresol: dehydrated alcohol=6: 4), adopt the method for high-speed shearing to make inorganic oxidation at room temperature The substance is dispersed to a uniform nano-dispersion state;

[0054] (2) Nanomaterial modification: Add 0.6 parts of modifier KH550 and react at 120°C for 1.5 hours to obtain modified nanomaterial slurry emulsion;

[0055] (3) Preparation of nanomaterial / insulating resin composite: Add 100 parts of DF-127 polyesterimide resin (40% solid content) into the modified nanomaterial slurry, heat to 120°C, and keep warm at 120°C for 2.0 Hour;

[0056] (4) Preparation of corona-resistant wire enamel: then lower the temperature to 70°C, add various additives required for wire enamel (consistent with the composition, do...

Embodiment 2

[0059] (1) The composition of the nanoparticles is 1.75 parts of nano-zinc oxide, 0.7 parts of nano-silicon-based oxide, and 11.55 parts of nano-titanium oxide. The rest are the same as in Example 1 and omitted.

[0060] (2) The prepared varnish was coated with a three-layer composite magnet wire according to the method of the comparative example.

[0061] (3) Use the paint prepared in Example 2 as the middle layer paint, and coat the double-layer composite magnet wire according to the method of Comparative Example 2.

[0062] The technical indicators of the corona-resistant electromagnetic wire varnish prepared by comparative example 2, embodiment 1, 2 are as follows:

[0063] Viscosity: 20℃, 500~800mPa·s

[0064] Solid content: 1.0g sample, 200℃, 1.0h, ≥35%

[0065] 2. Coating of corona-resistant magnet wire

[0066] Coating equipment: Italian SICME SEL-SP horizontal coating testing machine,

[0067] Austria MAG VN6 / 2H vertical wire coating machine.

[0068] Furnace tem...

Embodiment 3

[0080] A preparation method for nano-modified corona-resistant wire enamel, comprising the following steps:

[0081] (1) dispersion of nanomaterials: get 20 parts (weight, the same below) of nano-alumina, add 100 parts of organic solvent (cresol: dehydrated alcohol=1: 1), adopt the method for high-speed shearing to make inorganic oxidation at room temperature The substance is dispersed to a uniform nano-dispersion state;

[0082] (2) Nanomaterial modification: add 1.0 parts of modifier KH560, and react at 140°C for 3 hours to obtain a modified nanomaterial slurry emulsion;

[0083] (3) Preparation of nanomaterial / insulating resin composite: add 100 parts of trihydroxyethylisocyanate-modified polyesterimide resin (40% solid content) into the modified nanomaterial slurry, heat to 120°C, Incubate at 120°C for 6 hours;

[0084] (4) Preparation of corona-resistant wire enamel: then lower the temperature to 70°C, add various additives required for wire enamel (consistent with the ...

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Abstract

The invention discloses a preparation method of nanometer modified corona-tolerant enamel of enameled wire which comprises the steps of, taking 1-20 parts of inorganic oxide nano particles, charging 3-100 organic solvent, dispersing the inorganic oxide into uniform nano dispersed state at room temperature, charging 0.1-1.0 part of modifier for reacting 1-3 hours at 50-140 deg. C, obtaining modified nano material slurry, charging 60-100 parts of insulating resin into modified nano material slurry for reacting 3-6 hours at 70-120 deg. C.

Description

Technical field [0001] The invention relates to a preparation method of a paint, in particular to a preparation method of a nano-modified enameled wire varnish. The nano-modified enameled wire varnish is used for coating corona-resistant enameled wire to improve its comprehensive performance, especially to improve the corona-resistant performance, and can be used in the manufacture of AC variable frequency motors. Background technique [0002] Due to the remarkable characteristics of AC variable frequency motors, AC variable frequency motors have developed rapidly in recent years, but until now, all manufacturers of such motors have encountered a prominent problem, that is, premature failure of winding insulation performance. This is because the inverter motor regulator will generate overload voltage in the motor winding when it rotates at high speed, the magnet wire in this type of stator will be under greater stress than under the action of ordinary alternating current, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/25C09D167/00C09D175/04C09D179/08
Inventor 许显成唐安斌胡爱军杨士勇马庆柯孔翔飞
Owner 江苏东材新材料有限责任公司
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