Self-homogeneity wearproof resin type carbon brush and preparation method thereof

A technology of resin type and carbon brush, which is applied in the manufacture of brushes, current collectors, electrical components, etc., and can solve problems such as rough wear surfaces, large electric sparks, and high self-heating temperatures

Active Publication Date: 2015-09-16
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the carbon brushes used in active electric tool motors (such as stone cutters, electric grinders, electric wrenches and electric screwdrivers, electric hammers and impact drills, concrete vibrators, electric planers, etc.) use resin-type high-resistance carbon materials a...

Method used

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  • Self-homogeneity wearproof resin type carbon brush and preparation method thereof
  • Self-homogeneity wearproof resin type carbon brush and preparation method thereof
  • Self-homogeneity wearproof resin type carbon brush and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Sulfonated graphene oxide 20wt%,

[0038] Graphite powder 40wt%,

[0039] Thermosetting resin 40wt%.

[0040] In addition, 1 wt% aminosilane coupling agent, accounting for the total mass of the above components, is added to the mixed powder of graphite powder and sulfonated graphene oxide.

[0041] Add 2wt% polyethylene glycol accounting for the total mass of sulfonated graphene oxide, graphite powder and thermosetting resin to the mixture and resin alcohol solution.

[0042] 3. Dry mix, wet mix, flake, crush, sieve, press the above materials, and then solidify at a final temperature of 190°C to obtain the required samples.

[0043] 4. Make the sample into a carbon brush of the desired shape, and put it into a 1400W stone cutting machine for performance testing.

[0044] The test data is shown in the table below:

[0045]

Embodiment 2

[0047] Sulfonated graphene oxide 15wt%,

[0048] Graphite powder 45wt%,

[0049] Thermosetting resin 40wt%.

[0050] In addition, 1 wt% aminosilane coupling agent, accounting for the total mass of the above components, is added to the mixed powder of graphite powder and sulfonated graphene oxide.

[0051] Add 2wt% polyethylene glycol accounting for the total mass of sulfonated graphene oxide, graphite powder and thermosetting resin to the mixture and resin alcohol solution.

[0052] 3. Dry mix, wet mix, flake, crush, sieve, press the above materials, and then solidify at a final temperature of 190°C to obtain the required samples.

[0053] 4. Make the sample into a carbon brush of the desired shape, and put it into a 1400W stone cutting machine for performance testing.

[0054] The test data is shown in the table below:

[0055]

Embodiment 3

[0057] Sulfonated graphene oxide 15wt%,

[0058] Graphite powder 55wt%,

[0059] Thermosetting resin 30wt%.

[0060] Adding 1wt% of the total mass of aminosilane coupling agent to the mixed powder of graphite powder and sulfonated graphene oxide;

[0061] Add 2wt% polyethylene glycol accounting for the total mass of sulfonated graphene oxide, graphite powder and thermosetting resin to the mixture and resin alcohol solution.

[0062]3. Dry mix, wet mix, flake, crush, sieve, press the above materials, and then solidify at a final temperature of 190°C to obtain the required samples.

[0063] 4. Make the sample into a carbon brush of the desired shape, and put it into a 1400W stone cutting machine for performance testing.

[0064] The test data is shown in the table below:

[0065]

[0066] The above embodiments are only some preferred groups of preferred solutions in the present invention, and are not intended to limit the present invention; within the spirit and principle...

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Abstract

The invention discloses a self-homogeneity wearproof resin type carbon brush and a preparation method thereof. The carbon brush comprises the following components: 5wt%-30wt% of sulphonated and oxidized graphene, 20wt%-65wt% of scale graphite powder and isopressing graphite powder (one or mixture of the two), 30wt%-50wt% of thermosetting resin and an additive. The self-homogeneity wearproof resin type carbon brush has the characteristics of self homogeneity and high wear resistance, is applicable to a motor for a high-power electric tool, in particular to a motor for a high-power cutter. Compared to an existing carbon brush with the same type, the carbon brush is excellent in homogeneity and wear resistance, and the commutation spark is stabilized at the level defined in the specification; The current-carrying wear rate of the carbon brush is 1/5-1/2 of that of the motor for the conventional high-power electric tool with the same type.

Description

technical field [0001] The invention relates to a carbon brush for electric tool motors, in particular to a high-power carbon brush for electric tool motors and a preparation method. Background technique [0002] The carbon brush is a conductive part that is electrically connected to the commutator or slip ring by sliding contact. As a sliding contact body that imports and exports current, it must have good electrical and mechanical properties at the same time. With the rapid development of science and technology and the continuous improvement of the level of industrialization, electric tools will play a greater role in the national economy and people's lives. Among them, all kinds of high-power electric tool motors put forward new and higher requirements for high speed and high torque, and electric tool motors are developing in the direction of ultra-high speed, high power, integration and high efficiency. Most of the carbon brushes used in active electric tool motors (suc...

Claims

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Application Information

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IPC IPC(8): H01R39/20H01R43/12
CPCH01R39/22H01R43/12
Inventor 涂川俊冯鹏洋韦巩
Owner HUNAN UNIV
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