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Preparation method of nanometer thin-layer structural carbon material

A technology of carbon materials and thin layers, applied in the direction of nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems of high cost and low yield

Active Publication Date: 2015-04-01
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for preparing a nano-thin layer structure carbon material, so as to solve the problems of high cost and low yield of preparing such materials at present.

Method used

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  • Preparation method of nanometer thin-layer structural carbon material
  • Preparation method of nanometer thin-layer structural carbon material

Examples

Experimental program
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Effect test

Embodiment 1

[0029] Take 50g of refined asphalt into a three-necked flask, add 1.25g of glycerin triacetate and 30ml of quinoline, reflux at 230°C under normal pressure for 3 hours, then raise the temperature to 300°C, and remove quinoline by vacuum distillation to obtain the modified coal tar pitch; then put the modified coal tar pitch into the attached figure 1 In the shown tube furnace with mechanical vibrating device, nitrogen is used to remove the air in the tube furnace to make the pressure in the furnace reach 300KPa, and then the tube furnace is heated at a heating rate of 5°C / min. When the temperature rises to 400°C, the vibration generator is turned on at a frequency of 10 Hz, and the vibrator is turned off after 1 h. Continue to heat the tube furnace at a heating rate of 5°C / min to 500°C, keep it for 4 hours and stop heating, and after cooling, the carbon material intermediate is obtained, and then the obtained carbon material intermediate is calcined at a high temperature of 1...

Embodiment 2

[0031] Put 50g of refined asphalt into a three-necked flask, add 3.5g of glycerin triacetate and 30ml of quinoline, reflux at 230°C under normal pressure for 3.5h, then heat up to 300°C and remove quinoline by vacuum distillation to obtain Modified coal tar pitch; then put the modified coal tar pitch into the attached figure 1 In the shown tube furnace with mechanical vibration device, use nitrogen to remove the air in the tube furnace and make the pressure in the furnace reach 600KPa, then heat the tube furnace at a heating rate of 5°C / min, when the temperature reaches 430°C , turn on the vibrator, the vibration frequency is 20Hz, and turn off the vibrator after 2h; continue to heat the tube furnace at a heating rate of 5°C / min to 530°C, stop heating after 6h, and cool to obtain a carbon material intermediate; finally The obtained carbon material intermediate was calcined at a high temperature of 1500°C for 2.5 hours in a nitrogen atmosphere to obtain 16 g of nano-thin-layer...

Embodiment 3

[0033] Put 50g of refined asphalt into a three-necked flask, add 5g of glycerin triacetate and 30ml of quinoline, reflux at 230°C under normal pressure for 5h, then heat up to 300°C and remove quinoline by vacuum distillation to obtain the modified coal tar pitch; then put the modified coal tar pitch into the attached figure 1 In the shown tube furnace with mechanical vibration device, use nitrogen to remove the air in the tube furnace and make the pressure in the furnace reach 1MPa, then heat the tube furnace at a heating rate of 12°C / min, when the temperature reaches 450°C , turn on the vibrator with a vibration frequency of 30 Hz, and turn off the vibrator after 3 hours; continue to heat the tube furnace at a heating rate of 5 °C / min to 550 °C, stop heating after heating for 6 hours, and cool to obtain a carbon material intermediate; The obtained carbon material intermediate was calcined at a high temperature of 1500°C for 5 hours in a nitrogen atmosphere to obtain 15 g of...

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Abstract

The invention relates to a preparation method of a nanometer thin-layer structural carbon material. The preparation method comprises the following steps of: effectively controlling the formation, growth and fusion of an intermediate in a carbonizing process by taking pitch as a raw material and adopting a mechanical method cooperated with coal pitch modification to obtain a carbon material intermediate with an optical microscopic structure showing a good fiber structure; then calcining to obtain the nanometer thin-layer structural carbon material with the microscopic structure which is very clear in structure. The preparation method disclosed by the invention has the greatest advantages of preparing a macroscopic quantity of nanometer thin-layer materials, being low in raw material price and simple in process flow, being hopeful to carry out large-scale production in industrial production and overcoming the defect that the preparation of the similar material reported at present can only obtain a milligram-grade quantity which only achieves the quantity level needed by laboratory research.

Description

technical field [0001] The invention relates to a preparation method of a carbon material with a nano-layered structure, and furthermore, it is a method for preparing a carbon material with a nano-layered structure through mechanical vibration and coal tar pitch modification. technical background [0002] Graphene has been highly valued by scientists around the world due to its excellent electrical conductivity, heat transfer, and as a sensor device. Graphene is composed of benzene rings and belongs to a typical 2D structure. The carbon atoms in the layer are separated by sp 2 The hybridized orbitals are bonded, and each carbon atom provides a single electron shared by all atoms in the co-plane, forming a delocalized large π bond, thus exhibiting excellent thermoelectric properties as described above. [0003] At present, there are many methods for the preparation of graphene, such as mechanical exfoliation, epitaxial growth, chemical vapor deposition, graphite oxide reduct...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/02B82Y30/00B82Y40/00
Inventor 曹青吕永康俞蕙赵红张蓉王颖靳利娥
Owner TAIYUAN UNIV OF TECH
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