Generating method for crassitude carbon nano-tube and carbon nano-fibre in carbon composite refractory material

A technology of carbon nanofibers and refractory materials, which is applied in the field of generation of thick carbon nanotubes and carbon nanofibers in carbon composite refractory materials. Good, simple process effect

Inactive Publication Date: 2008-09-24
INNER MONGOLIA UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Practice has shown that when a certain amount of nano-scale carbon black is added to carbon composite refractory materials, its oxidation resistance, slag erosion resistance and strength are all improved, but nano-scale carbon black is added during the production of carbon composite refractory materials. Form into the raw material, the added nano-scale carbon black has the disadvantage of being difficult to disperse evenly during mixing, and the in-situ growth technology of nano-carbon materials in carbon composite refractory materials has not been reported; nano-carbon tubes and nano-carbon fibers Due to its unique structure and properties, it has been a research hotspot in recent years, and its growth in complex multiphase carbon composite refractory materials has not been reported yet.

Method used

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  • Generating method for crassitude carbon nano-tube and carbon nano-fibre in carbon composite refractory material
  • Generating method for crassitude carbon nano-tube and carbon nano-fibre in carbon composite refractory material
  • Generating method for crassitude carbon nano-tube and carbon nano-fibre in carbon composite refractory material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] 1) According to the physical and chemical indicators shown in Table 1, select sintered tabular alumina, α-Al 2 o 3 , graphite, metal silicon powder, phenolic resin, and nickel nitrate; according to the mixing ratio of various materials shown in Table 2, respectively weigh 380g of tabular alumina with a particle size of 1.0-0mm, 330g of tabular alumina with a particle size of 2 o 3 Powder 30g, flake graphite 240g, metal silicon powder 20g, phenolic resin 60g spare;

[0016] 2) Weigh 5 grams of nickel nitrate and add 45 grams of distilled water to prepare a solution with a concentration of 10%, then add it to the 330 g of plate-shaped corundum powder with a particle size of 2 o 3 Powder, 20g metal silicon powder mixed for later use;

[0017] 3) After heating 60g of phenolic resin in a water bath at 80°C for 15 minutes, add half of it to 380g of plate-shaped corundum with a particle size of 1.0-0mm weighed in step 1). After mixing for 5 minutes, add 240g of flake graphi...

Embodiment 2

[0020] 1) According to the physical and chemical indicators shown in Table 1, select sintered tabular alumina, α-Al 2 o 3 , graphite, metal silicon powder, phenolic resin, and nickel nitrate; according to the mixing ratio of various materials shown in Table 2, we weighed 380g of tabular alumina with a particle size of 1.0-0mm, 330g of tabular alumina with a particle size of 2 o 3 Powder 30g, flake graphite 240g, metal silicon powder 20g, phenolic resin 60g spare;

[0021] 2) Weigh 10 grams of nickel nitrate and add 90 grams of distilled water to prepare a solution with a concentration of 10%, and then add it to the 330 g of platy corundum powder with a particle size of 2 o 3 Powder, 20g metal silicon powder are mixed for later use;

[0022] 3) After heating 60g of phenolic resin in a water bath at 80°C for 15 minutes, add half of it to 380g of plate-shaped corundum with a particle size of 1.0-0mm weighed in step 1). After mixing for 5 minutes, add 240g of flake graphite wei...

Embodiment 3

[0025] 1) According to the physical and chemical indicators shown in Table 1, select sintered tabular alumina, α-Al 2 o 3 , graphite, metal silicon powder, phenolic resin, and nickel nitrate; according to the mixing ratio of various materials shown in Table 2, we weighed 380g of tabular alumina with a particle size of 1.0-0mm, 330g of tabular alumina with a particle size of 2 o 3 Powder 30g, flake graphite 240g, metal silicon powder 20g, phenolic resin 60g spare;

[0026] 2) Weigh 30 grams of nickel nitrate and add 270 grams of distilled water to prepare a solution with a concentration of 10%, then add it to the 330 g of platy corundum with a particle size of 2 o 3 Powder, 20g metal silicon powder are mixed for later use;

[0027] 3) After heating 60g of phenolic resin in a water bath at 80°C for 15 minutes, add half of it to 380g of plate-shaped corundum with a particle size of 1.0-0mm weighed in step 1). After mixing for 5 minutes, add 240g of flake graphite weighed in st...

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Abstract

The present invention relates to a method used for preparing a stout carbon nanotube and carbon nanofiber in a carbon composite refractory material. The method is characterized in that raw materials are prepared according to the requirement for the ingredients that are used for preparing the carbon composite refractory material; nickel nitrate with 0.5 to 3 weight percent of the total materials is used for preparing the aqueous solution with the concentration of 10 percent; the aqueous solution is fully mixed with the plate-shaped alundum powder or flake graphite in the refractory material that is used for preparing the carbon composite refractory material; the mixture is dried until the content of water is 1 to 2 weight percent; the raw materials that is mixed with the nickel nitrate is mixed with other residual raw materials that are used for preparing the carbon composite refractory material; the stout carbon nanotube and carbon nanofiber can grow in the carbon composite refractory material after mixed-refining, molding, drying and sintering according to the manufacturing technique of the carbon composite refractory material. The method has the advantages of simple technological process, easily controllable technological parameters, a large amount of stout carbon nanotube and carbon nanofiber that grow in the sintered carbon composite refractory material; the stout carbon nanotube and carbon nanofiber grow well and interweave in the fasciculate shape in the carbon composite refractory material; the length can reach a plurality of microns; a photo taken by a scanning electron microscope can display the clear hollow structure of the stout carbon nanotube and carbon nanofiber, which has the diameter between 50nm and 400nm. The method realizes the in-situ growth of the carbon nanotube and carbon nanofiber in the sintered carbon composite refractory material.

Description

technical field [0001] The invention relates to a method for generating coarse carbon nanotubes and carbon nanofibers in carbon composite refractory materials. Background technique [0002] Carbon is an important component of carbon composite refractories, and it is a key component for carbon composite refractories to obtain excellent performance. After the carbon composite refractory is fired at high temperature, carbon mainly exists in the refractory in the form of graphite and amorphous. Practice has shown that when a certain amount of nano-scale carbon black is added to carbon composite refractory materials, its oxidation resistance, slag erosion resistance and strength are all improved, but nano-scale carbon black is added during the production of carbon composite refractory materials. Form into the raw material, the added nano-scale carbon black has the disadvantage of being difficult to disperse evenly during mixing, and the in-situ growth technology of nano-carbon m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
Inventor 安胜利郭巍赵文广宋希文赵永旺郭贵宝韩丽
Owner INNER MONGOLIA UNIV OF SCI & TECH
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