Method for preparing carbon/carbon composite material for pantograph pan

A technology of carbon composite material and pantograph slide plate is applied in the field of preparation of pantograph slide plate carbon/carbon composite material, which can solve the problems of uneven distribution and limitation of catalysts, and achieves improved carbonization and densification efficiency, low production cost, The effect of reducing process and production cycle time

Active Publication Date: 2012-08-22
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the uneven distribution of the catalyst used, its application in the preparation of sliding carbon / carbon composites is still very limited.
At the same time, there is no complete research on the preparation of carbon / carbon composite materials for pantograph slides by liquid phase impregnation-carbonization method.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (A) Add 30 ml of dispersant absolute ethanol and 3.5 g of catalyst boric acid to 100 g of aminophenol-formaldehyde resin to prepare a phenolic resin solution for impregnation. The mass of boron element: the mass of phenolic resin is about 0.62:100.

[0023] (B) Place the quasi-three-dimensional integral felt of the needle-punched non-weft fabric into the above-mentioned phenolic resin for impregnation, the impregnation process is completed in an autoclave, the pressure is 1.5MPa, the impregnation temperature is 75°C, and the impregnation time is 3h;

[0024] (C) placing the quasi-three-dimensional integral felt of needle-punched non-weft fabric impregnated with the above-mentioned resin in an autoclave, and curing under pressure. The curing pressure is 1.5 MPa, the curing temperature is 160° C., and the holding time is 3 hours;

[0025] (D) Carry out the carbonization treatment in the muffle furnace under the air-isolated condition of the above-mentioned cured sample, th...

Embodiment 2

[0030] (A) add 10ml catalyst triethyl borate in 100g boron phenolic resin, preparation impregnates with boron phenolic resin solution, boron element quality: phenolic resin quality is about 0.66: 100;

[0031] (B) Place the non-weft cloth net tire mixed integral felt in the above-mentioned boron phenolic resin for impregnation, in an autoclave, the pressure is 2MPa, and the temperature is 80°C, and impregnate for 2h;

[0032] (C) pressurize and solidify the above-mentioned non-weft cloth net tire mixed integral felt impregnated with resin in an autoclave, the curing pressure is 2MPa, the curing temperature is 180°C, and the holding time is 2h;

[0033] (D) Carry out the carbonization treatment in the muffle furnace under the air-isolated condition of the sample after the above-mentioned solidification, the temperature is 1000 ℃, and the holding time is 3h;

[0034] (E) Repeat the three processes of B-D six times, the material density is 1.62g / cm 3 ;

[0035] (F) After the ab...

Embodiment 3

[0038] (A) in 100g aminophenol-formaldehyde resin, add dispersant salicylaldehyde 40ml and catalyzer boric acid 5g, preparation impregnates phenolic resin solution, boron element quality: phenolic resin quality is about 0.89: 100;

[0039] (B) Place the quasi-three-dimensional integral felt of the needle-punched non-weft fabric into the above-mentioned phenolic resin for impregnation, the impregnation process is completed in an autoclave, the pressure is 2MPa, the impregnation temperature is 85°C, and the impregnation time is 2h;

[0040] (C) Pressurize and solidify the needle-punched quasi-three-dimensional integral felt of the non-woven fabric impregnated with the above-mentioned resin in an autoclave, the curing pressure is 1.5 MPa, the curing temperature is 180° C., and the holding time is 2 hours;

[0041] (D) Carry out the carbonization treatment in the muffle furnace under the air-isolated condition of the above-mentioned cured sample, the temperature is 900°C, and the h...

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PUM

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Abstract

The invention provides a method for preparing a carbon / carbon composite material for a pantograph pan, which comprises the following steps of: adding a boron catalyst and a dispersant into resin solution with a high carbon residue rate; soaking a carbon fiber fabric body into the mixture, performing pressurizing curing treatment and normal-pressure carbonization on the carbon fiber fabric body, and after the processes, performing high-temperature graphitization on the carbon fiber fabric body. The preparation method of the invention has the advantages of low production cost, short production period, simple process and suitability for industrial production. The carbon / carbon composite material for the pantograph pan, prepared by adopting the method, has very good friction resistance and conductivity.

Description

technical field [0001] The invention relates to a preparation method of a carbon material, in particular to a preparation method of a pantograph slide carbon / carbon composite material. Background technique [0002] Skateboards and catenary wires of electric locomotives constantly produce electrical shock and mechanical shock wear, which are the most frequently replaced and consumed parts in electric locomotives. Therefore, the development of high-speed electric locomotives puts forward very strict requirements for skateboard materials: 1) good 2) Excellent friction and wear properties and self-lubricating properties, less wear on the transmission wire, and at the same time require the slide itself to have less wear; 3) High mechanical strength, able to withstand certain vibration and impact loads without damage; 5) Lightweight Quantify. [0003] Carbon / carbon composite material is a new type of pure carbon composite material that uses high-strength carbon fibers to reinforc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/83C04B35/52C04B35/622
Inventor 刘洪波肖绍懿何月德
Owner HUNAN UNIV
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