Ventilation functional element for carbon nanotube reinforced ventilation channel and preparation method thereof
A technology of ventilation channels and functional components, applied in the field of refractory materials, can solve problems such as inability to directly apply ventilation functional components, metal liquid penetration, etc., and achieve the effect of improving service life and ensuring efficiency
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Embodiment 1
[0045] The preparation method of the air-permeable functional element of the carbon nanotube-reinforced air-permeable channel includes mixing materials, molding and firing, and the specific steps are:
[0046] 1) Prepare a solution by dissolving 1g of nickel nitrate catalyst in 4g of ethanol aqueous solution, then co-grind the solution with 200g of magnesia powder with a particle size of 200 mesh or less in a ball mill, and dry at 90°C after co-milling to obtain a mixed powder ; The mass concentration of ethanol aqueous solution is 70%;
[0047] 2) Mix and grind the mixed powder obtained in step 1), 800g of chrome ore aggregate, and 20g of liquid phenolic resin binder in a mixer mill, dry-press molding at 150MPa to obtain the green body of the breathable functional element, and then Dehydration treatment at 500°C; the particle size of the chrome ore aggregate is 1-0.2mm;
[0048] 3) Put the dehydrated gas-permeable functional element green body in the electric furnace for 3 h...
Embodiment 2
[0051] The preparation method of the air-permeable functional element of the carbon nanotube-reinforced air-permeable channel includes mixing materials, molding and firing, and the specific steps are:
[0052] 1) Dissolving 4g of ferric nitrate catalyst in 12g of ethanol aqueous solution to prepare a solution, then co-grinding the solution with 400g of magnesia-stabilized zirconia powder with a particle size of less than or equal to 200 meshes in a ball mill, and drying at 110°C after co-milling to obtain Mixed powder; the mass concentration of ethanol aqueous solution is 90%;
[0053] 2) Mix and grind the mixed powder obtained in step 1), 600g of fused magnesia aggregate and 30g of liquid phenolic resin binder in a mixing mill, and dry press at 100MPa to obtain a green body of a breathable functional element , and then dehydrated at 520°C; the particle size of the fused magnesia aggregate is 1-0.5mm;
[0054] 3) Put the dehydrated gas-permeable functional element green body ...
Embodiment 3
[0057] A method for preparing a carbon nanotube-reinforced air-permeable functional element of an air-permeable channel, comprising mixing materials, molding and firing, and the specific steps are:
[0058] 1) Dissolve a mixture of 2.5g of iron nitrate and 2g of nickel nitrate in 12g of ethanol aqueous solution to prepare a solution, then co-grind the solution with 300g of corundum powder with a particle size of 200 mesh or less in a ball mill, and dry at 120°C after co-grinding , to obtain mixed powder; the mass concentration of ethanol aqueous solution is 30%;
[0059] 2) Mix and grind the mixed powder obtained in step 1), 700g of fused corundum aggregate and 40g of sulfite pulp waste liquid binder in a mixing mill, and dry press at 200MPa to obtain a breathable functional element element blank, and then dehydrated at 480°C; the particle size of the fused corundum aggregate (5) is 0.5-0.2mm;
[0060] 3) Put the dehydrated gas-permeable functional element green body in the e...
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