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Ultra-abrasion resistant multifunctional nano carbon brush and preparation method thereof

A nano-carbon and ultra-wear-resistant technology, which is applied in the manufacture of brushes, current collectors, electrical components, etc., can solve the problems of high resistivity and unsuitability, and achieve the effects of increased starting power, good commutation performance, and stable operation

Active Publication Date: 2010-02-24
丽水市长新电器制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The resistivity is too high, so it is not suitable as a carbon brush for low-voltage motors, especially automotive auxiliary permanent magnet motors

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Embodiment 1, this super wear-resistant omnipotent nano-carbon brush comprises copper powder and cemented graphite powder, and the weight ratio of copper powder and cemented graphite powder is: 40 parts to 60 parts of copper powder, 60 parts to 40 parts of cemented graphite powder; The cemented graphite powder includes nano silicon oxide, subnano graphite powder, flake graphite powder and phenolic resin solution, and its weight ratio is as follows:

[0037] Nano silicon oxide 0.7~1.5 parts

[0038] Subnanometer graphite powder 8.0 parts

[0039] Flake graphite powder 70.5 to 71.3 parts

[0040] 45 parts of phenolic resin solution with a concentration of 45%

[0041] The average particle size of nano silicon oxide is 20nm~50nm, and the specific surface area is 160±20m 2 / g. Nano silicon oxide is organosiloxane coated nano silicon oxide. The average particle size of the sub-nanometer graphite powder is less than 1 micron. The sub-nanometer graphite powder is an ultra...

Embodiment 2

[0061] 1. Preparation of cemented graphite powder

[0062] 1), nanometer material and technical process are the same as embodiment one

[0063] Its cemented graphite powder ratio:

[0064] Nano silicon oxide 1.0 parts

[0065] Subnanometer graphite powder 8.0 parts

[0066] Flake graphite powder 71.0 parts

[0067] 45 parts of phenolic resin solution with a concentration of 45%

[0068] 2, pressed powder preparation and follow-up process are the same as embodiment one

[0069] The final product use results are shown in Table 1

Embodiment 3

[0071] 1. Preparation of cemented graphite powder

[0072] 1), nanometer material and technical process are the same as embodiment one

[0073] 2) Proportion of cemented graphite powder:

[0074] Nano silicon oxide 1.5 parts

[0075] Subnanometer graphite powder 8.0 parts

[0076] Flake graphite powder 70.5 parts

[0077] 45 parts of phenolic resin solution with a concentration of 45%

[0078] 2, pressed powder preparation and follow-up process are the same as embodiment one

[0079] The final product use results are shown in Table 1

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Abstract

The invention relates to an ultra-abrasion resistant multifunctional nano carbon brush which comprises the following components in parts by weight: 40-60 parts of copper powder and 60-40 parts of cementing graphite powder. The cementing graphite powder comprises the following components in parts by weight: 0.7-1.5 parts of nano silicon oxide, 8.0 parts of subnano graphite powder, 70.5-71.3 parts of flake graphite powder and 45 parts of phenolic resin solution with concentration of 45 percent. The invention has the advantages that the abrasion resistance of the carbon brush is obviously reinforced, and the service life of a single carbon brush reaches 920 hours; and the working contact surface is stably run, the reversing performance is excellent and the spark is tiny, the noise is greatlylowered and the start power is improved by more than 30 percent. The overlong service life is realized by adding the nano silicon oxide; the low noise and the favorable reversing performance are realized by adding the subnano graphite powder; and the favorable conductive performance is realized by adding the copper powder.

Description

technical field [0001] The invention relates to a carbon brush, in particular to a low-voltage motor, especially a super wear-resistant all-round nano carbon brush for an auxiliary permanent magnet motor of an automobile and a preparation method thereof. "Almighty" means that this kind of carbon brush can meet the various performance indicators of the carbon brush when the motor is running, that is, low noise, small spark level, and long service life. However, it is difficult for ordinary carbon brushes to meet the above performance indicators at the same time. Background technique [0002] The process of producing carbon brushes in the past technology is to use flake graphite powder with a carbon content of 95% or 99% and pitch or phenolic resin in proportion to mix, pulverize, and sieve to make cemented graphite powder, and then mix it with copper powder, tin powder and Lead powder etc. are mixed, pressed and sintered. Copper powder is usually made of copper with a coppe...

Claims

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Application Information

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IPC IPC(8): H01R39/20H01R43/12
Inventor 陈华安
Owner 丽水市长新电器制造有限公司
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