Method for preparing pantograph carbon slide strip material from graphene oxide

A technology of pantograph carbon and graphene, which is applied in the field of preparation of pantograph carbon slider materials using graphene oxide, which can solve the problem that ordinary carbon materials cannot fully meet the physical and chemical indicators of carbon sliders and the production cycle of carbon sliders Long, increased manufacturing costs and other issues, to achieve good electrical conductivity, short production cycle, improve the effect of strength

Active Publication Date: 2017-05-24
广西鑫锋电源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The Chinese patent application number 201310582451.6 discloses a pantograph carbon slide and its manufacturing method. The pantograph carbon slide is made of petroleum coke powder, pitch coke powder, spray carbon black, sulfur, boron nitride, carbon fiber, natural stone Ink, artificial graphite, calcium chloride powder, and modified pitch are mixed and mixed as raw materials, and then kneaded. The carbon skateboard blank is made of the kneaded material, and then roasted to make a sintered carbon slide blank. The sintered carbon The skateboard blank is impregnated, roasted, and dried in sequence. The production cycle of the carbon skateboard in this patent is long, and two roastings are required to achieve the desired effect.
[0006] In addition, the diversification and high-end of raw materials, such as carbon fiber, natural graphite and other materials, will inevitably increase the manufacturing cost
Because high-end graphite products can meet the production process requirements of pantograph carbon sliders, but their prices are very expensive, and domestic high-performance graphite products are still in the development stage, while ordinary carbon materials cannot fully meet the physical and chemical indicators of carbon sliders.

Method used

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  • Method for preparing pantograph carbon slide strip material from graphene oxide
  • Method for preparing pantograph carbon slide strip material from graphene oxide

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Experimental program
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Effect test

Embodiment 1

[0044] (1) Prepare the aggregates for preparing the pantograph carbon slider according to weight percentage: 3% graphene oxide, 10% semi-reinforcing carbon black, 6% graphite powder, and 71% pitch coke.

[0045] The weight ratio of aggregate to medium-temperature coal tar pitch is 74:26, the softening point of medium-temperature coal tar pitch is 85°C, and the coking value is 58%. The tensile modulus of graphene oxide is 1.01TPa, and the ultimate strength is 116Gpa. Semi-reinforced carbon The black particle size is 0.07mm, the resistivity is 0.6μΩ·m, and the true density of pitch coke is 2.10g / cm 3 , the ash content is 0.45%, the volatile matter is 0.75%, and the particle size of graphite powder is 0.5mm. Among them, the pitch coke is crushed, pulverized, and sieved. The percentage is 55%, the particle size ≤ 0.15mm accounts for 45% of the weight percentage of the total pitch coke, and the prepared aggregate particle size is 0.15mm-2mm.

[0046] (2) Put the aggregate prepared...

Embodiment 2

[0052] (1) Prepare the aggregates for preparing the pantograph carbon slider according to weight percentage: 3% graphene oxide, 10% semi-reinforcing carbon black, 7% graphite powder, and 80% pitch coke.

[0053] The weight ratio of aggregate to medium-temperature coal tar pitch is 73:27, the softening point of medium-temperature coal tar pitch is 87°C, and the coking value is 58%. The tensile modulus of graphene oxide is 1.01TPa, and the ultimate strength is 116Gpa. Semi-reinforced carbon The black particle size is 0.08mm, the resistivity is 0.4μΩ·m, and the true density of pitch coke is 2.50g / cm 3 , the ash content is 0.45%, the volatile matter is 0.75%, and the particle size of graphite powder is 0.5mm. Among them, the pitch coke is crushed, pulverized, and sieved. The percentage is 57%, the particle size ≤ 0.15mm accounts for 43% by weight of the total pitch coke, and the prepared aggregate particle size is 0.15mm-2mm.

[0054] (2) Put the aggregate prepared above into the...

Embodiment 3

[0060] (1) Prepare the aggregates for preparing the pantograph carbon slider according to weight percentage: 4% graphene oxide, 12% semi-reinforcing carbon black, 7% graphite powder, and 77% pitch coke.

[0061] The weight ratio of aggregate to medium-temperature coal tar pitch is 72:28, the softening point of medium-temperature coal tar pitch is 88°C, and the coking value is 60%. Among them, the tensile modulus of graphene oxide is 1.01TPa, and the ultimate strength is 116Gpa. Semi-reinforced carbon The black particle size is 0.09mm, the resistivity is 0.4μΩ·m, and the true density of pitch coke is 2.50g / cm 3 , the ash content is 0.45%, the volatile matter is 0.75%, and the particle size of graphite powder is 0.9mm. Among them, the pitch coke is crushed, pulverized, and sieved. The percentage is 58%, the particle size ≤ 0.15mm accounts for 42% by weight of the total pitch coke, and the prepared aggregate particle size is 0.15mm-2mm.

[0062] (2) Put the aggregate prepared ab...

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Abstract

The invention discloses a method for preparing a pantograph carbon slide strip material from graphene oxide. The method comprises the following steps: mixing graphene oxide, semi-reinforced carbon black and graphite powder with crushed, milled and screened pitch coke to form aggregate for preparing carbon slide strips; adding a binder to the aggregate, and mixing and kneading the aggregate and the binder to form a paste; carrying out pre-compression molding on the paste; and calcining the pre-compression molded paste to finally obtain the material suitable for pantograph carbon slide strips. The required carbon strip material can be obtained only through one-time calcination, so the production period is short. The pantograph carbon slide strips produced by using the graphene oxide have the advantages of good electricity conduction performance, high heat conduction performance, strong friction and wear resistance, and low cost of raw materials.

Description

technical field [0001] The invention belongs to the technical field of electric locomotives, and in particular relates to a method for preparing a pantograph carbon slider material by using graphene oxide. Background technique [0002] With the development of science and technology, rail transit plays an increasingly important role in the national economy. Today, with the rapid development of my country's national economy, the rail transit industry, especially high-speed rail, bullet trains, and passenger and freight electric locomotives, is showing a booming situation. [0003] As for the pantograph, which is the most important power source, it is the most important thing. Since the high-speed train obtains electric energy from the road network wires through the carbon slide plate on the pantograph, and drives the traction motor to run to drive the train, the reliable contact between the pantograph carbon slide plate and the road network wire is an important condition to e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/52C04B35/632
Inventor 范志利张培林张培模武建军闵洁纪永良刘伟凯赵建国赵宽王志辉
Owner 广西鑫锋电源科技有限公司
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