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Hydroxyl-functionalized carbon nano tube-reinforced pantograph pan and preparation method thereof

A technology of pantograph slides and carbon nanotubes, which is applied in the field of hydroxyl-functionalized carbon nanotube-reinforced pantograph slides and its preparation, which can solve the problems of poor combination of asphalt and aggregates, so as to prevent agglomeration and improve heat resistance performance, the effect of reducing the resistivity

Active Publication Date: 2019-06-07
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a kind of hydroxy-functionalized carbon nanotube reinforced pantograph slide and its preparation method, to solve the existing problem of poor combination of asphalt and aggregate in the preparation of asphalt-based pantograph slides, And while enhancing the combination degree of asphalt and aggregate phase, it improves the thermal conductivity and flexural strength of the pantograph slide plate

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  • Hydroxyl-functionalized carbon nano tube-reinforced pantograph pan and preparation method thereof

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Effect test

Embodiment 1

[0029] The hydroxyl-functionalized carbon nanotube-reinforced pantograph slide of this embodiment includes: by weight, 25 parts of pitch coke, 15 parts of petroleum coke, 15 parts of modified coal tar pitch, 8 parts of artificial graphite powder and hydroxyl-functionalized multi-wall 3 parts carbon nanotubes. Wherein, the hydroxyl functionalized multi-walled carbon nanotubes have a length of 5 μm.

[0030] The preparation method of the hydroxyl-functionalized carbon nanotube-reinforced pantograph sliding plate of this embodiment includes:

[0031] (1) After mixing the hydroxyl-functionalized carbon nanotubes with water, ultrasonically disperse them, and then dry them under vacuum conditions. The vacuum drying temperature is 80 ° C, and the drying time is 1 h;

[0032] (2) Mix and knead the dried hydroxyl-functionalized carbon nanotubes with modified coal tar pitch, heat up and melt, cool and solidify, and then crush and grind to obtain primary powder; wherein, the reaction co...

Embodiment 2

[0037] The hydroxyl-functionalized carbon nanotube-reinforced pantograph slide of this embodiment includes: in parts by weight, 35 parts of pitch coke, 20 parts of petroleum coke, 20-40 parts of modified coal tar pitch, 10 parts of artificial graphite powder and hydroxyl-functionalized 4 parts of multi-walled carbon nanotubes. Among them, the hydroxyl functionalized multi-walled carbon nanotubes have a length of 7 μm.

[0038] The preparation method of the hydroxyl-functionalized carbon nanotube-reinforced pantograph sliding plate of this embodiment includes:

[0039] (1) After mixing the hydroxyl-functionalized carbon nanotubes with water, ultrasonically disperse them, and then dry them under vacuum conditions; wherein, the vacuum drying temperature is 80° C., and the drying time is 1.5 hours;

[0040] (2) Mix and knead the dried hydroxyl-functionalized carbon nanotubes with modified coal tar pitch, heat up and melt, cool and solidify, and then crush and grind to obtain primar...

Embodiment 3

[0045] The hydroxyl-functionalized carbon nanotube-reinforced pantograph slide of this embodiment includes: by weight, 45 parts of pitch coke, 25 parts of petroleum coke, 25 parts of modified coal tar pitch, 13 parts of artificial graphite powder and hydroxyl-functionalized multi-wall 5 parts of carbon nanotubes. Wherein, the hydroxyl functionalized multi-walled carbon nanotubes have a length of 10 μm.

[0046] The preparation method of the hydroxyl-functionalized carbon nanotube-reinforced pantograph sliding plate of this embodiment includes:

[0047] (1) After mixing the hydroxyl-functionalized carbon nanotubes with water, ultrasonically disperse them, and then dry them under vacuum conditions. The vacuum drying temperature is 90° C., and the drying time is 2 hours;

[0048] (2) Mix and knead the dried hydroxyl-functionalized carbon nanotubes with modified coal tar pitch, heat up and melt, cool and solidify, and then crush and grind to obtain primary powder; wherein, the re...

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Abstract

The invention discloses a hydroxyl functionalized carbon nano tube enhanced pantograph pan and a preparation method thereof, and belongs to the technical field of pantograph pan preparation. The pantograph pan comprises the following components in parts by mass: 25-60 parts of asphalt coke, 15-35 parts of petroleum coke, 15-40 parts of modified coal asphalt, 8-20 parts of artificial graphite powder and 3-8 parts of hydroxyl functionalized carbon nanotubes. The preparation method comprises the following steps: ultrasonically dispersing hydroxyl functionalized carbon nanotubes, mixing and kneading the hydroxyl functionalized carbon nanotubes with the modified coal asphalt, melting, and cooling, crushing and grinding the mixture; kneading, rolling and grinding the obtained powder, pitch coke,petroleum coke and artificial graphite powder, and then carrying out kneading forming and roasting operation to obtain the hydroxyl functionalized carbon nano tube reinforced pantograph pan. The pantograph pan disclosed by the invention is good in heat conduction, electric conduction and breaking strength performance, low in resistivity and good in heat resistance.

Description

technical field [0001] The invention relates to the technical field of pantograph slide preparation, in particular to a hydroxyl-functionalized carbon nanotube reinforced pantograph slide and a preparation method thereof. Background technique [0002] Nowadays, the pantograph slide is an important component for high-speed trains to obtain energy, and its performance is directly related to the safe, reliable and stable operation of high-speed trains. With the continuous improvement of train carrying capacity and running speed, the power transmission power increases accordingly, resulting in more severe impact vibration between pantograph-catenary systems. Therefore, people have higher and higher performance requirements for pantograph slides. [0003] At present, resin-based pantograph slides are often used as materials for pantograph slides in the railway industry. However, with the continuous increase in power transmission power, resin-based pantograph slides mostly use res...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/83C04B35/622
Inventor 吴广宁陈琦琛高国强涂川俊魏文赋杨泽锋李响左浩梓
Owner SOUTHWEST JIAOTONG UNIV
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