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High-strength copper sheet commutator material and preparation method thereof

A commutator, high-strength technology, used in current collectors, rotary current collectors, connections, etc., can solve the problems of high strength and low adhesion, achieve good flame retardancy, enhance mechanical strength, and reduce adhesion. Effect

Pending Publication Date: 2022-04-26
连云港英格达电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem that the copper-skin commutator material in the prior art cannot satisfy both high strength and low adhesion, the purpose of the present invention is to provide a high-strength copper-skin commutator material and its preparation method

Method used

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  • High-strength copper sheet commutator material and preparation method thereof

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Embodiment 1

[0039] A high-strength copper skin commutator material, including the following components:

[0040] 100 parts of modified phenolic resin, 212 parts of inorganic filler, 18 parts of lubricant, 2.5 parts of crosslinking agent, 12 parts of auxiliary agent and 24 parts of curing catalyst.

[0041] Among them, the inorganic filler is mica powder and glass fiber with a mass ratio of 4:1, the lubricant is zinc stearate, the crosslinking agent is trimethoxysilane, the auxiliary agent is nitrile rubber, and the curing catalyst is calcium oxide.

[0042] The preparation method of modified phenolic resin is:

[0043] S1. Weigh the phenolic resin and phthalic anhydride and mix them into N,N-dimethylformamide, raise the temperature to 100° C., stir and react for 7 hours, and cool to room temperature to obtain an anhydride-modified phenolic resin solution;

[0044] Wherein, the mass ratio of phenolic resin, phthalic anhydride and N,N-dimethylformamide is 1:0.32:4;

[0045] S2. Weigh chlo...

Embodiment 2

[0056] A high-strength copper skin commutator material, including the following components:

[0057] 100 parts of modified phenolic resin, 185 parts of inorganic filler, 12 parts of lubricant, 1.5 parts of crosslinking agent, 10 parts of auxiliary agent and 21 parts of curing catalyst.

[0058] Among them, the inorganic filler is mica powder and glass fiber with a mass ratio of 3 to 5:1, the lubricant is calcium stearate, the crosslinking agent is trimethoxysilane, the auxiliary agent is nitrile rubber, and the curing catalyst is magnesium oxide.

[0059] The preparation method of modified phenolic resin is:

[0060] S1. Weigh the phenolic resin and phthalic anhydride and mix them into N,N-dimethylformamide, heat up to 90° C., stir and react for 6 hours, and cool to room temperature to obtain an anhydride-modified phenolic resin solution;

[0061] Wherein, the mass ratio of phenolic resin, phthalic anhydride and N,N-dimethylformamide is 1:0.25:3;

[0062] S2. Weigh chlorite ...

Embodiment 3

[0073] A high-strength copper skin commutator material, including the following components:

[0074] 100 parts of modified phenolic resin, 264 parts of inorganic filler, 24 parts of lubricant, 3 parts of crosslinking agent, 16 parts of auxiliary agent and 28 parts of curing catalyst.

[0075] Among them, the inorganic filler is mica powder and glass fiber with a mass ratio of 5:1, the lubricant is magnesium stearate, the crosslinking agent is trimethoxysilane, the auxiliary agent is nitrile rubber, and the curing catalyst is calcium hydroxide.

[0076] The preparation method of modified phenolic resin is:

[0077] S1. Weigh the phenolic resin and phthalic anhydride and mix them into N,N-dimethylformamide, raise the temperature to 100° C., stir and react for 8 hours, and cool to room temperature to obtain an anhydride-modified phenolic resin solution;

[0078] Wherein, the mass ratio of phenolic resin, phthalic anhydride and N,N-dimethylformamide is 1:0.48:6;

[0079] S2. Wei...

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Abstract

The invention discloses a high-strength copper sheet commutator material which comprises the following components: 100 parts of modified phenolic resin, 185-264 parts of an inorganic filler, 12-24 parts of a lubricant, 1.5-3 parts of a cross-linking agent, 10-16 parts of an auxiliary agent and 21-28 parts of a curing catalyst. The modified phenolic resin is obtained by modifying anhydride and then combining with N 'N-carbonyldiimidazole / chlorite powder for reaction. According to the invention, modification is carried out on the basis of the existing phenolic resin, the prepared modified phenolic resin not only maintains the advantages of high temperature resistance, corrosion resistance and good flame retardance of the original phenolic resin, but also enhances the mechanical strength and reduces the cohesiveness of the phenolic resin, and meanwhile, the toughness of the phenolic resin is improved; and the material is more suitable for being used as a material of a copper sheet commutator.

Description

technical field [0001] The invention relates to the field of commutators, in particular to a high-strength copper-skin commutator material and a preparation method thereof. Background technique [0002] At present, domestic commutator products are mainly divided into two types: insert type commutator and copper skin type commutator. There is a large demand for personnel, while the copper-skin commutator is directly punched and formed by the machine, which is highly efficient and belongs to semi-automatic production, and requires less personnel. Therefore, the production efficiency and production cost of the insert commutator are not as good as the copper-skinned commutator. commutator. [0003] In the process of pressing and forming the commutator, the selection of molding materials is also very important. At present, most of the materials used in the pressing and forming of the commutator are bakelite powder. This material works well on the insert commutator. However, the...

Claims

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Application Information

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IPC IPC(8): C08L61/14C08L9/02C08K3/34C08K9/06C08K9/02C08K7/14C08K13/06H01R39/02H01R39/04
CPCC08L61/14C08G8/32H01R39/022H01R39/04C08L2201/02C08L2201/08C08L9/02C08K3/346C08K9/06C08K9/02C08K3/34C08K7/14C08K13/06
Inventor 江健许田力张长江
Owner 连云港英格达电子科技有限公司