Carbon fiber material and preparation method and application thereof and method of preparing pantograph slide block

A carbon fiber material and fiber material technology, applied in the field of material science, can solve problems such as low efficiency, long time consumption, and complex preparation process of composite materials, and achieve the effect of simple process, low price, easy procurement and storage

Inactive Publication Date: 2018-04-17
株洲科维机车配件股份有限公司
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AI-Extracted Technical Summary

Problems solved by technology

The preparation process of composite materials in this sc...
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Method used

1, carbon fiber material adopts pitch-based carbon fiber precursor to prepare, and prepares pantograph slider with prepared carbon fiber material, is equivalent to directly skipping carbon powder pressing process and directly adopts pitch-based carbon fiber precursor to prepare subject For pantograph sliders, although this new method relatively increases the cost of raw materials, the pantograph sliders produced have a long service life, high safety performance, high reliability, and higher cost performance, which can fully meet the needs of locomotive pantographs. Use requirements for coasting in contact with the grid.
2, carbon fiber material adopts pitch-based carbon fiber precursor as raw material, pitch-based carbon fiber oily, friction coefficient is small, good electrical conductivity, also has advantages such as oxidation resistance, high temperature resistance, acid and alkali resistance, and pitch-based carbon fiber price is relatively high Low, its raw silk fiber preparation process is simple, easy to purchase and store. Carbon fiber materials prepared from pitch-based carbon fibers have the characteristics of low friction coefficient, high wear resistance and high electrical conductivity, and are very suitable for preparing pantograph sliders.
According to the preparation process flow of Fig. 1, carry out the preparation of carbon fiber material, adopt pitch-based carbon fiber precursor as raw material, pitch-based carbon fiber precursor price is lower, carbon content is high, and preparation process is simple, easy to purchase and storage , and the pitch-based carbon fiber precursor contains oil, has a small friction coefficient, good electrical conductivity, and has the advantages of oxidation resistance, high temperature...
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Abstract

The invention discloses a carbon fiber material and a preparation method and an application thereof. By taking asphalt-based carbon fiber precursors as a raw material, the material is oxidized and carbonized to obtain the carbon fiber material. The preparation process is simple, and the prepared carbon fiber material has the characteristics of being low in friction coefficient, high in wear resistance and high in conductivity. A pantograph slide block is prepared from the carbon fiber material prepared from the asphalt-based carbon fiber precursors. The pantograph slide block is prepared directly from the asphalt-based carbon fiber precursors without a carbon dust pressing process. Although the cost of the raw materials is relatively increased by the novel method, the prepared pantograph slide block is long in service life, high in safety performance, high in reliability and higher in cost performance, and can fully meet the using demand that the pantograph of a locomotive is in contact with an electrified wire net to slide. The invention also provides a method of preparing the pantograph slide block.

Application Domain

Fibre chemical featuresPower current collectors

Technology Topic

Power gridPantograph +9

Image

  • Carbon fiber material and preparation method and application thereof and method of preparing pantograph slide block
  • Carbon fiber material and preparation method and application thereof and method of preparing pantograph slide block

Examples

  • Experimental program(1)

Example Embodiment

[0024] The following will be attached through the Figure 1~2 The examples further describe the present invention.
[0025] according to figure 1 The preparation process of the carbon fiber material is carried out by using the pitch-based carbon fiber precursor as the raw material. The silk contains oil, has a small friction coefficient, good electrical conductivity, and also has the advantages of oxidation resistance, high temperature resistance, acid and alkali resistance, etc., so that the prepared carbon fiber material has a good performance in electrical conductivity and wear resistance, and is very suitable for Raw materials for the preparation of electroporation slides.
[0026] The purchased pitch-based carbon fiber precursors are oxidized and carbonized to obtain carbon fiber materials. The preparation process is simple and easy to operate. Compared with carbon powder, the pitch-based carbon fiber precursors have better electrical conductivity. The cost-effectiveness of the carbon fiber material is better.
[0027] Wherein, the “oxidizing the raw materials to obtain oxidized fibers” specifically refers to: placing the raw materials in a medium-temperature furnace with a temperature of 250-350° C. for 1-2 hours, and then taking them out and cooling to normal temperature to obtain oxidized fibers.
[0028] The "carbonization treatment" specifically refers to: placing the oxidized fiber in a high-temperature furnace at 2400-2600° C. for 1-2 hours, and then taking it out for cooling. Through oxidation treatment and carbonization treatment, the graphite content in the carbon fiber material is increased.
[0029] Wherein, the pitch-based carbon fiber is petroleum-based pitch carbon fiber, and the oil content is 40% to 60%, so that the prepared carbon fiber material has good wear resistance.
[0030] The present invention also protects the carbon fiber material prepared by the above-mentioned preparation method of the carbon fiber material, the graphite content of the carbon fiber material is more than 99%, and the carbon fiber material has excellent electrical conductivity, wear resistance, oxidation resistance and high temperature resistance.
[0031] The performance parameter of the carbon fiber material is density: 2g/cm 3 , Tensile strength: 3500MPa, friction coefficient: 0.08.
[0032] The application of the above carbon fiber material is characterized in that the carbon fiber material is used to make the pantograph slider.
[0033] like figure 2 As shown in the above, the method for preparing the pantograph slider by using the carbon fiber material described above, the process flow is to put the carbon fiber material into the pantograph slider mold, press molding at high temperature, and then put the power receiving The bow slider mold is demolded to obtain the pantograph slider finished product.
[0034] Wherein, the process parameters of the "press molding at high temperature" are as follows: the temperature is 150-250° C., the pressure is 1-5 MPA, and the pressure holding time is 1-2 hours.
[0035] Wherein, before putting the carbon fiber material into the pantograph slider mold, the pantograph bracket is pre-embedded in the pantograph slider mold, and the pantograph bracket is made of carbon material bracket, that is Both the bracket and the pantograph slider are made of carbon material, which improves the conduction efficiency between the two, reduces the failure of the two structures, and prolongs the service life.
[0036] The advantages of the present invention are:
[0037] 1. The carbon fiber material is prepared from pitch-based carbon fiber precursors, and the prepared carbon fiber material is used to prepare the pantograph slider, which is equivalent to skipping the carbon powder pressing process and directly using the pitch-based carbon fiber precursors to prepare the pantograph slider. Although this new method relatively increases the cost of raw materials, the pantograph slider has a long service life, high safety performance, high reliability, and its cost-effectiveness is higher, which can fully meet the contact between the locomotive pantograph and the power grid. Sliding usage requirements.
[0038]2. The carbon fiber material uses pitch-based carbon fiber precursor as raw material. Pitch-based carbon fiber contains oil, has a small friction coefficient, good electrical conductivity, and also has the advantages of oxidation resistance, high temperature resistance, acid and alkali resistance, and the price of pitch-based carbon fiber is low. The raw silk fiber has a simple preparation process and is easy to purchase and store. The carbon fiber material prepared from pitch-based carbon fiber has the characteristics of low friction coefficient, high wear resistance and high electrical conductivity, and is very suitable for the preparation of pantograph sliders.
[0039] 3. The process of preparing carbon fiber materials from pitch-based carbon fiber precursors and preparing pantograph sliders from carbon fiber materials is quite simple and easy to operate, which can improve the production efficiency of pantograph sliders.
[0040] 4. Both the bracket and the pantograph slider are made of carbon material, which improves the conduction efficiency between the two, reduces the failure of the two structures, and prolongs the service life.
[0041] The technical solutions of the embodiments of the present invention are completely described above with reference to the accompanying drawings. It should be noted that the described embodiments are only a part of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

PUM

PropertyMeasurementUnit
Density2.0g/cm³
Tensile strength3500.0MPa

Description & Claims & Application Information

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