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Anti-corona material for end parts of coil bars of motors and application method of anti-corona material

An application method and motor wire technology, applied in epoxy resin coatings, coatings and other directions, can solve the problem of unstable anti-corona effect, and achieve the effect of good anti-corona effect, good electrical performance and stable effect.

Inactive Publication Date: 2017-02-01
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the defects that most of the materials at the end of motor wire rods use single crystal silicon carbide powder in the prior art, and the anti-halation effect is unstable, the present invention provides a new anti-halation material at the end of motor wire rods and its application method

Method used

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  • Anti-corona material for end parts of coil bars of motors and application method of anti-corona material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-3

[0030] Mix according to the proportioning ratio in Table 1 to obtain the anti-halation paint at the end of the motor wire rod.

[0031]

[0032] After the raw materials mentioned in the above table are stirred evenly, the anti-halation paint is made, and then the experimental platform for dipping and drying is built, and the anti-halation paint is evenly impregnated on the non-alkali glass cloth and dried to make the anti-halation tape 1, 2, 3. The thickness of the anti-halation belt is 1.5mm.

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Abstract

The invention belongs to the field of new materials and particularly relates to an anti-corona material for end parts of coil bars of motors and an application method of the anti-corona material. The novel anti-corona material for the end parts of the coil bars of the motors and the application method of the anti-corona material, provided by the invention, are used for overcoming the defect in the prior art that the anti-corona effect is unstable due to the fact that end part materials for the coil bars of the motors are mostly single silicon carbide micropowder. The anti-corona material provided by the invention is prepared from the ingredients in parts by weight: 20-30 parts of beta silicon carbide powder with grain size smaller than 20 microns and 50-70 parts of alpha silicon carbide powder with grain size of 20 to 40 microns. The application method of the anti-corona material provided by the invention comprises the steps of mixing the anti-corona material with a tackifier, a dispersant and a curing agent so as to prepare an anti-corona coating, and then, preparing an anti-corona tape with the thickness of 1mm to 2mm. The anti-corona material provided by the invention has better electrical properties and is good in anti-corona effect and more stable in corona prevention.

Description

technical field [0001] The invention belongs to the field of new materials, and in particular relates to an anti-corona material at the end of a wire rod of a motor and an application method thereof. Background technique [0002] With the continuous increase of generator capacity and the improvement of voltage level, the anti-halation problem at the end of the motor bar is more prominent. The anti-halation at the upper and lower ends of the motor bar refers to a period of time Anti-halation treatment is performed on the part from the R bend to the hypotenuse at the end of the bar. At present, most of the common anti-corona treatment at the end of the motor rod uses silicon carbide for anti-corona. Silicon carbide is a semiconductor material with a nonlinear conductive mechanism. Its resistance automatically decreases with the increase of the electric field, and the field strength can be automatically adjusted. SiC is used as a mixture of conductive base and paint base for h...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D7/12
CPCC08K3/34C08K3/346C08K2201/011C08K2201/014C09D163/00C09D7/61C09D7/67
Inventor 陈庆国张斯文王新宇池明赫
Owner HARBIN UNIV OF SCI & TECH
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