Preparation method of pantograph slide plate for high-speed train

A pantograph sliding plate, high-speed train technology, applied in applications, current collectors, ceramic products, etc., can solve problems such as high cost, achieve the effects of simple and easy-to-control preparation process, improve compactness, and improve overall performance

Active Publication Date: 2020-11-20
HENAN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to overcome the high cost problem of existing copper-impregnated-C/C composite materials, and provide

Method used

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  • Preparation method of pantograph slide plate for high-speed train
  • Preparation method of pantograph slide plate for high-speed train
  • Preparation method of pantograph slide plate for high-speed train

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] The cross carbon fiber pre-impregnated carbon cloth with a phenolic resin content of 40vol% is used. The coating is a mixed slurry of pitch-based short carbon fiber, graphite powder, pitch coke powder and phenolic resin, wherein the resin content is 60wt%, pitch-based short carbon fiber is 15wt%, graphite powder is 20wt%, and the mass ratio of pitch coke is 5wt%. Stir mechanically until evenly dispersed; the pitch-based short carbon fiber has a length of 500 μm, the graphite powder is flake graphite powder with a size of 100 mesh, and the pitch coke powder has a size of 500 mesh. Brush the mixed slurry evenly on the surface of the prepreg cloth twice by brushing method, and raise the temperature to 80°C until the ethanol is completely volatilized.

[0046] After brushing the pitch-based carbon fibers, lay them up alternately; then place them on a flat vulcanizer for curing and molding under a pressure of 40MPa, press at a temperature of 180°C, and hold the pressure for ...

Embodiment 2

[0050] The cross carbon fiber pre-impregnated carbon cloth with phenolic resin content of 30vol% is used. The coating is a mixed slurry of pitch-based short carbon fiber, graphite powder, pitch coke powder and phenolic resin, wherein the resin content is 55wt%, pitch-based short carbon fiber is 15wt%, graphite powder is 25wt%, and the mass ratio of pitch coke is 5wt%. Stir mechanically until evenly dispersed; the pitch-based short carbon fiber has a length of 500 μm, the graphite powder is flake graphite powder with a size of 100 mesh, and the pitch coke powder has a size of 500 mesh. Brush the mixed slurry evenly on the surface of the prepreg cloth twice by brushing method, and raise the temperature to 80°C until the ethanol is completely volatilized.

[0051] After brushing the pitch-based carbon fibers, lay them up alternately; then place them on a flat vulcanizer for curing and molding under a pressure of 40MPa, press at a temperature of 180°C, and hold the pressure for 3 ...

Embodiment 3

[0055] A unidirectional carbon fiber prepreg carbon cloth with a phenolic resin content of 45vol% is used. The coating is a mixed slurry of pitch-based short carbon fiber, graphite powder, pitch coke powder and phenolic resin, wherein the resin content is 70wt%, pitch-based short carbon fiber is 10wt%, graphite powder is 15wt%, and the mass ratio of pitch coke is 5wt%) , mechanically stirred until evenly dispersed; wherein the length of the pitch-based short carbon fiber is 800 μm, the graphite powder is flake graphite powder with a size of 100 mesh, and the pitch coke powder size is 500 mesh. Brush the mixed slurry evenly on the surface of the prepreg cloth twice by brushing method, and raise the temperature to 80°C until the ethanol is completely volatilized.

[0056] Use unidirectional carbon fiber pre-impregnated carbon cloth with a pure phenolic resin content of 100%. After brushing the pitch-based carbon fiber, lay it vertically and alternately; Put it into a carbonizat...

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Abstract

The invention relates to a preparation method of a pantograph slide plate for a novel low-cost copper-carbon/carbon-impregnated composite material. The material is a high-conductivity high-strength self-lubricating material. The preparation method comprises the following steps: designing slurry with special components, then brushing the modified carbon fiber prepreg cloth with the modified carbonfiber prepreg cloth in a brushing manner, then performing hot pressing to prepare a C/C porous body, and finally, dipping the copper alloy so that the copper leaching C/C composite material is obtained. Vapor deposition densification does not need to be carried out, and the obtained product has excellent performance, and especially has much better wear resistance than the existing product.

Description

technical field [0001] The invention relates to the preparation of a novel low-cost copper-impregnated-carbon / carbon composite material pantograph sliding plate, which is a high-conductivity high-strength self-lubricating material preparation method. Background technique [0002] As of 2020, my country's high-speed railway has exceeded 30,000 kilometers, and it is becoming more and more high-speed and electrified. The normal speed of the high-speed railway group is 300-380km / h, and the maglev train usually runs over 400km / h. The high-speed railway line in the test has the highest CIT500 The speed can reach 605km / h. During the high-speed operation of the electric train, the electric power is obtained from the catenary through the pantograph slide. The pantograph slide / catenary system is the throat part of the train power supply system. Significant influence. At present, the pantograph slides in high-speed electric locomotives are mainly made of carbon-based composite materia...

Claims

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Application Information

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IPC IPC(8): C04B35/83C04B35/84C04B41/88C04B38/06B60L5/20
CPCC04B35/83C04B41/88C04B41/009C04B41/5133C04B38/067B60L5/205C04B2235/48C04B2235/425C04B2235/422C04B2235/77C04B2235/96C04B2235/6562C04B2235/6567C04B41/5127C04B41/5096C04B41/4523
Inventor 王培康克家吴海宏
Owner HENAN UNIVERSITY OF TECHNOLOGY
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