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Method for manufacturing motor brush by rice hull

A technology of brushes and rice husks, applied in the direction of motor generator connectors, circuits, collectors, etc., can solve the problems of short service life and poor wear resistance, and achieve long service life, excellent wear resistance and corrosion resistance, and replacement good effect

Active Publication Date: 2016-12-07
HEFEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems of poor wear resistance and short service life of existing motor brushes, the invention provides a method for preparing motor brushes from rice husks. The prepared motor brushes have excellent wear resistance, electrical and thermal conductivity, Self-lubricating and corrosion-resistant, at the same time, resourceful use of rice husks to prepare rice husk-based ceramic particles, the process is safe and environmentally friendly

Method used

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  • Method for manufacturing motor brush by rice hull
  • Method for manufacturing motor brush by rice hull
  • Method for manufacturing motor brush by rice hull

Examples

Experimental program
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Effect test

Embodiment 1

[0023] The method for preparing a motor brush by using rice husks, the steps are as follows:

[0024] ①. Blend rice husk powder and phenolic resin, stir evenly, transfer to a quartz boat, and carbonize at 900°C for 2 hours under the protection of nitrogen to obtain rice husk-based ceramic particles.

[0025] ② Stir graphite and silane coupling agent evenly; then add copper powder, continue stirring evenly, mix with rice husk-based ceramic particles, stir evenly, and set aside.

[0026] ③. Pour the uniformly mixed powder into a cold-pressed mold, press it under a pressure of 30Mpa, then move it into a tube furnace, and calcinate it at 900°C for 2 hours in a nitrogen atmosphere to obtain a motor brush.

Embodiment 2

[0028] The method for preparing a motor brush by using rice husks, the steps are as follows:

[0029] ①. Blend rice husk powder and phenolic resin, stir evenly, transfer to a quartz boat, and carbonize at 900°C for 2 hours under the protection of nitrogen to obtain rice husk-based ceramic particles.

[0030] ② Stir molybdenum disulfide and silane coupling agent evenly; then add copper powder, continue stirring evenly, mix with rice husk-based ceramic particles, stir evenly, and set aside.

[0031] ③. Pour the uniformly mixed powder into a cold-pressed mold, press it under a pressure of 30Mpa, then move it into a tube furnace, and calcinate it at 900°C for 2 hours in a nitrogen atmosphere to obtain a motor brush.

Embodiment 3

[0033] ①. Blend rice husk powder and phenolic resin, stir evenly, transfer to a quartz boat, and carbonize at 900°C for 2 hours under the protection of nitrogen to obtain rice husk-based ceramic particles.

[0034] ②. Add ethanol to molybdenum disulfide, ultrasonically disperse evenly, then add copper powder, continue stirring evenly, and set aside.

[0035] ③. Add ethanol to the silane coupling agent, ultrasonically disperse evenly, and set aside.

[0036] ④. Mix the system obtained in steps ② and ③, and after stirring evenly, add rice husk-based ceramic particles, stir evenly, and set aside.

[0037] ⑤. Pour the uniformly mixed powder into a cold-pressed mold, press it under a pressure of 30Mpa, then move it into a tube furnace, and calcinate it at 900°C for 2 hours in a nitrogen atmosphere to obtain a motor brush.

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Abstract

The invention discloses a method for manufacturing a motor brush by a rice hull, and relates to the technical field of the preparation of the motor brush. Preparation materials comprise 90-94 parts of rice hull base ceramic particles, 0.1-1 part of adhesive, 0.1-0.8 part of lubricating agent, 1-5 parts of copper powder and the like, wherein the rice hull base ceramic particle is obtained in a way that rice hull powder and phenolic resin are subjected to high-temperature carbonization after being mixed evenly at the ratio of 1-5:1. From the comprehensive utilization of the rice hull, the rice hull (powder) and a phenolic resin high-temperature carbonization product-rice hull ceramic particle are used as the body material of the brush, raw materials including a certain quantity of solid lubricating agent, adhesive, copper powder and the like are used as auxiliary materials, and all materials are evenly stirred and are subjected to compression moulding and calcination to obtain the motor brush. The method is suitable for manufacturing various classes of motors of brush components, and a preparation process is simple and easy in implementation and is safe and environmentally friendly. The prepared motor brush has the advantages of being low in specific resistance, good in commutation, electrical conductivity and thermal conductivity, excellent in abrasion performance and decay resistance, long in service life, good in self-lubricating property and the like, and the combination property of the prepared motor brush is obviously superior to the combination property of a traditional brush.

Description

technical field [0001] The invention relates to the technical field of preparation of motor brushes, in particular to a method for preparing motor brushes from rice husks. Background technique [0002] my country is a big agricultural country, and the country produces about 2.02 billion tons of rice every year. Rice husk is one of the main by-products of rice production and processing into rice, and it is also a kind of crop waste, accounting for about 20% of the weight of rice. How to realize the comprehensive utilization of rice husks and produce high value-added products is a hot spot in domestic research. The preparation of rice husk-based ceramic particles is one of the effective ways to realize the resource utilization of rice husk. [0003] Rice husk-based ceramics are rich in silica and amorphous carbon components, have considerable electrical and thermal conductivity, and can be used to develop motor brushes and high-speed train pantograph slide materials. Among ...

Claims

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Application Information

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IPC IPC(8): H01R39/22H01R43/12
CPCH01R39/22H01R43/12H01R2201/10
Inventor 胡恩柱胡坤宏俞东瑞汤玉超
Owner HEFEI UNIV
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