A high-performance electric brush and its preparation method

A high-performance brush technology, applied in brush manufacturing, circuits, current collectors, etc., can solve problems such as mechanical sparks, high unit pressure of brushes, and insufficient heat resistance, so as to reduce the risk of friction cracking and excellent durability. Grinding performance, the effect of good electrical performance

Active Publication Date: 2020-04-03
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The existing brushes have poor service performance and poor stability. The unit pressure of the brush is too high, the resistance is large and the hardness is high, which leads to increased wear of the brush used in the motor. The unit pressure is too small, the contact is unstable, and the commutation performance is poor. Prone to mechanical sparks; especially poor wear resistance, poor commutation performance, poor anti-interference ability, insufficient heat resistance, unable to meet various requirements of high-performance motors for brushes

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A method for preparing a high-performance electric brush, comprising the following steps:

[0036] (1) Under nitrogen protection, mix ammonium hexachloroiridate, zinc acetate, samarium tricene, ethanol and cyclohexane; then reflux and stir for 2 to 3 hours, then add potassium hydroxide ethanol solution and tert-butyl hydroperoxide ; After reacting for 2 to 3 hours, cool down to room temperature naturally, add ethyl acetate to coagulate and centrifuge; disperse the centrifuged precipitate in ethanol to obtain a dispersion system; add polyvinyl alcohol and hydrogen peroxide to the dispersion system, stir at 50 ° C for 5 hours, and then Add N-isopropylacrylamide and tetraphenylporphyrin iron, stir at 60°C for 2 hours, then add ammonia water and ethyl orthosilicate, reflux and stir for 3 hours, then concentrate to obtain a concentrate with a solid content of 80%; The substance is subjected to high-gravity treatment; then freeze-dried to obtain nanopowder; the rotation speed...

Embodiment 2

[0040] A method for preparing a high-performance electric brush, comprising the following steps:

[0041] (1) Under nitrogen protection, mix ammonium hexachloroiridate, zinc acetate, samarium tricene, ethanol and cyclohexane; then reflux and stir for 2 to 3 hours, then add potassium hydroxide ethanol solution and tert-butyl hydroperoxide ; After reacting for 2 to 3 hours, cool down to room temperature naturally, add ethyl acetate to coagulate and centrifuge; disperse the centrifuged precipitate in ethanol to obtain a dispersion system; add polyvinyl alcohol and hydrogen peroxide to the dispersion system, stir at 50 ° C for 5 hours, and then Add N-isopropylacrylamide and tetraphenylporphyrin iron, stir at 60°C for 2 hours, then add ammonia water and ethyl orthosilicate, reflux and stir for 3 hours, then concentrate to obtain a concentrate with a solid content of 80%; The substance is subjected to high-gravity treatment; then freeze-dried to obtain nanopowder; the rotation speed...

Embodiment 3

[0045] A method for preparing a high-performance electric brush, comprising the following steps:

[0046] (1) Under nitrogen protection, mix ammonium hexachloroiridate, zinc acetate, samarium tricene, ethanol and cyclohexane; then reflux and stir for 2 to 3 hours, then add potassium hydroxide ethanol solution and tert-butyl hydroperoxide ; After reacting for 2 to 3 hours, cool down to room temperature naturally, add ethyl acetate to coagulate and centrifuge; disperse the centrifuged precipitate in ethanol to obtain a dispersion system; add polyvinyl alcohol and hydrogen peroxide to the dispersion system, stir at 50 ° C for 5 hours, and then Add N-isopropylacrylamide and tetraphenylporphyrin iron, stir at 60°C for 2 hours, then add ammonia water and ethyl orthosilicate, reflux and stir for 3 hours, then concentrate to obtain a concentrate with a solid content of 80%; The substance is subjected to high-gravity treatment; then freeze-dried to obtain nanopowder; the rotation speed o...

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Abstract

The invention provides a high-performance electric brush and a preparation method thereof. The electric brush prepared based on cyanate ester and phenolic resin combined with epoxy resin solution method has excellent wear resistance and heat resistance, and has good Electrical performance; through the selection and compatibility of the resin matrix, combined with a reasonable preparation process, the obtained product has high performance and can be used for high-quality, high-demand motors and engines.

Description

technical field [0001] The invention belongs to the technical field of electric tool accessories, and in particular relates to a high-performance electric brush and a preparation method thereof. Background technique [0002] The brush is a device for transferring energy between the fixed part and the rotating part of the motor or engine. It is generally made of pure carbon and a curing agent. Sliding contact is made to form an electrical connection. As a current sliding contact, brushes are used on commutators or slip rings. With good electrical conductivity, thermal conductivity and lubrication properties, they are widely used in various electrical equipment, such as household appliances vacuum cleaners, pulverizers, industrial appliances cleaning machines, lawn mower etc. [0003] Brush product materials mainly include electrochemical graphite, grease-impregnated graphite, and metal (copper, silver) graphite; brushes are divided into four categories: graphite brushes, el...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L79/04C08L61/06C08L63/00C08L91/06C08K13/06C08K3/22C08K7/24C08K9/04C08K9/06C08K5/47H01R39/20H01R39/24H01R43/12
CPCC08K2003/2296C08L79/04C08L2203/20C08L2205/035H01R39/20H01R39/24H01R43/12C08L61/06C08L63/00C08L91/06C08K13/06C08K3/22C08K7/24C08K9/08C08K9/06C08K5/47
Inventor 梁国正
Owner SUZHOU UNIV
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