Pantograph pan composite material for high-speed electric multiple units and preparation method of pantograph pan composite material

A technology of pantograph sliding plate and high-speed railway, applied in the field of composite materials, can solve the problems of high cost, poor conductivity, long cycle and so on

Active Publication Date: 2015-09-23
GONG YI VAN-RES INNOVATION COMPOSITE MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: to overcome the disadvantages of poor electrical conductivity, long cycle and high cost of the carbon-carbon composite material pantograph slide plate prepared in the prior art, and to provide a short-cycle, low-cost high-speed railway EMU. Pantograph slide composite material and preparation method thereof

Method used

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Examples

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preparation example Construction

[0030] The above-mentioned preparation method of the pantograph slide plate composite material for the high-speed railway EMU, its specific steps are as follows:

[0031] (a) Weigh raw materials according to the following proportions: chopped carbon fiber 30-60%, phenolic resin powder 20-30%, pitch coke powder 10-20%, flake graphite powder 10-20%, copper powder 1-10%;

[0032] (b) Mix the raw materials weighed in step (a) with a planetary ball mill at a speed of 200-500 rpm for 2-5 hours to ensure that the raw materials are evenly mixed;

[0033] (c) Pour the mixture prepared in step (b) into a mold of a molding machine made according to the structure and size of the pantograph slide and press it into shape;

[0034] (d) The specific process parameters of the molding machine are as follows: temperature: 120-200°C; pressure: 1-5MPa; holding time: 2-5h;

[0035] (e) Put the pantograph slide body prepared in step (d) into a muffle furnace for pre-oxidation treatment; during pre-...

Embodiment 1

[0042] A method for preparing a pantograph sliding plate composite material for high-speed railway EMUs, the specific steps are as follows:

[0043] (a) Weigh raw materials according to the following ratio: 30% chopped carbon fiber (fiber length 2-5mm, diameter 7-10μm), 30% phenolic resin powder (200-400 mesh), 20% pitch coke powder (300 ~500 mesh), 10% flake graphite powder (300~500 mesh), 10% copper powder (800~1000 mesh);

[0044] (b) Mix the raw materials weighed in step (a) with a planetary ball mill at a speed of 200 rpm for 2 hours to ensure that the raw materials are evenly mixed;

[0045] (c) Pour the mixture prepared in step (b) into a mold of a molding machine made according to the structure and size of the pantograph slide;

[0046] (d) The specific process parameters of the molding machine are as follows: temperature: 120°C; pressure: 1MPa; holding time: 2h;

[0047] (e) Put the pantograph slide body prepared in step (d) into a muffle furnace for pre-oxidation tre...

Embodiment 2

[0054] A method for preparing a pantograph sliding plate composite material for high-speed railway EMUs, the specific steps are as follows:

[0055] (a) Weigh raw materials according to the following ratio: 60% chopped carbon fiber (fiber length 2-5mm, diameter 7-10μm), 10% phenolic resin powder (200-400 mesh), 10% pitch coke powder (300 ~500 mesh), 15% flake graphite powder (300~500 mesh), 5% copper powder (800~1000 mesh);

[0056] (b) Mix the raw materials weighed in step (a) with a planetary ball mill at a speed of 500 rpm for 5 hours to ensure that the raw materials are evenly mixed;

[0057] (c) Pour the mixture prepared in step (b) into a mold of a molding machine made according to the structure and size of the pantograph slide;

[0058] (d) The specific process parameters of the molding machine are as follows: temperature: 200°C; pressure: 5MPa; holding time: 5h;

[0059] (e) Put the pantograph slide body prepared in step (d) into a muffle furnace for pre-oxidation tr...

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Abstract

The invention discloses a preparation method of a pantograph pan composite material for high-speed electric multiple units. The preparation method comprises the following steps: proportionally weighing raw materials: 30-60 percent of chopped carbon fiber, 20-30 percent of phenolic resin powder, 10-20 percent of pitch coke powder, 10-20 percent of crystalline graphite powder, and 1-10 percent of copper powder, uniformly mixing the weighed raw materials, pouring the mixture into a moulding press die for compression moulding, successively placing a green body into a muffle furnace for pre-oxidation, a carburization furnace for carburization, an isothermal chemical vapor deposition furnace for densification, and a high-temperature graphitization furnace for graphitization, and obtaining the pantograph pan composite material. The pantograph pan composite material is processed to obtain a carbon-carbon composite material pantograph pan. The carbon-carbon composite material pantograph pan, which is prepared according to the preparation method, is not only short in cycle and low in cost, but also excellent in various performance indexes, can supply stable and safe electric power for the high-speed electric multiple units, and ensures the efficient operation of a locomotive.

Description

Technical field: [0001] The invention relates to a preparation method of a composite material, in particular to a pantograph slide composite material for a high-speed railway EMU and a preparation method thereof, belonging to the technical field of composite materials. Background technique: [0002] With the rapid development of my country's electrified railway, there will be more and more high-speed trains galloping on the railway network. High-quality pantograph slides can provide a smooth and safe power supply for the locomotive, which is the key to ensure the efficient operation of the locomotive. Since the appearance of the pantograph slide, its development has gone through stages such as metal slide, powder metallurgy slide, carbon slide, and metal-impregnated carbon slide. Metal slides and powder metallurgy slides have high mechanical strength and good electrical conductivity, but they have severe wear on catenary wires and weak arc resistance; carbon slides have goo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/83C04B35/622
Inventor 张东生吴恒姚栋嘉孙国栋牛利伟
Owner GONG YI VAN-RES INNOVATION COMPOSITE MATERIAL CO LTD
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