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Composite material of conductive slip ring and preparation method thereof

A composite material and conductive slip ring technology, which is applied in metal processing equipment, transportation and packaging, etc., can solve the problems of insufficient friction and wear performance and electrical conductivity of copper-based materials, so as to avoid insufficient sintering, improve bearing capacity and chemical stability sex good effect

Active Publication Date: 2022-07-19
JIANGSU UNIV OF SCI & TECH
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Problems solved by technology

[0003] Purpose of the invention: The purpose of the present invention is to provide a composite material of a conductive slip ring and a preparation method thereof to solve the problem of insufficient friction and wear properties and electrical conductivity of copper-based materials

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  • Composite material of conductive slip ring and preparation method thereof
  • Composite material of conductive slip ring and preparation method thereof
  • Composite material of conductive slip ring and preparation method thereof

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Embodiment Construction

[0026] The present invention will be further described below with reference to the accompanying drawings.

[0027] Different samples are prepared by using the composite material of the present invention, and the copper-based composite material includes 5-20% of molybdenum disulfide, 0-1% of carbon nanotubes and the balance of copper powder in terms of mass fraction. Table 1 shows the carbon nanotubes, molybdenum disulfide mass fraction and sintering temperature of specific examples A1-A4, B1-B4, C1-C4, D1-D4.

[0028] Table 1

[0029]

[0030] Among them, the purity of copper powder is more than 99.9%, and the particle size is 5-8μm; the purity of molybdenum disulfide powder is more than 99%, and the particle size is 10μm; the purity of carbon nanotubes is more than 95%, the inner diameter is 3-5nm, and the outer diameter is 8-15nm. The length is 3-12 μm.

[0031] The steps for preparing the test pieces of the various embodiments include:

[0032] Mixing powder: accordin...

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Abstract

The invention discloses a composite material of a conductive slip ring and a preparation method of a test piece, which is characterized in that, in terms of mass fraction, it comprises 5-20% of molybdenum disulfide, 0-1% of carbon nanotubes, and the balance of copper powder. Cu, MoS according to the required ratio 2 CNTs and CNTs are weighed, mixed and ball-milled after drying; the fully mixed powder is statically pressed into a pin sample by a tablet machine; the pin sample is sintered under vacuum, and then annealed after heat preservation to obtain a test piece. The invention can improve the friction and wear performance and electrical conductivity of the copper-based composite material, has low production cost, long service life, non-toxic and environmental protection, simple materials, and is favorable for mass production.

Description

technical field [0001] The invention relates to conductive materials and preparations, in particular to a composite material of conductive slip rings and a method for preparing test pieces thereof. Background technique [0002] At present, generators are gradually developing in the direction of high power, long life and high reliability. Higher requirements are put forward for the performance of conductive slip rings, which are key components in generators. The materials must have good wear resistance, friction reduction and self-lubrication. performance, electrical and thermal conductivity, and corrosion resistance. Copper-based materials have been widely used in aerospace, high-speed rail, ships, automobiles, wind turbines and other fields due to their good electrical and thermal conductivity, corrosion resistance and wear resistance. and defects such as insufficient high temperature resistance. For copper / graphite composites, the tribological properties are directly rel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C9/00C22C32/00C22C1/05B22F1/105B22F9/04B22F3/02B22F3/10B22F3/24
CPCC22C9/00C22C32/0089C22C26/00C22C1/05B22F9/04B22F3/02B22F3/1007B22F3/24C22C2026/002B22F2009/043B22F2003/248
Inventor 左雪谢文新周元凯苏宇
Owner JIANGSU UNIV OF SCI & TECH
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