Surface ceramic bovine stephanoporate bamboo charcoal wave-suction material of load magnetic metal and method of producing the same
A technology of magnetic metal and wave absorbing material, applied in the direction of magnetic field/electric field shielding, electrical components, etc., can solve problems such as difficulty, and achieve the effect of increasing performance, enhancing electrical conductivity, and improving the degree of graphitization
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Embodiment 1
[0020] Cut bamboo slices of 20mm×8mm×3mm from the thorny bamboo, and dry the bamboo slices to remove moisture. The bamboo slices were soaked in a sodium hydroxide solution with a concentration of 3 mol / L for 10 hours, then suction filtered and rinsed with deionized water until the pH value of the filtrate was 7. Bamboo slices were dried at 120°C. Bamboo slices were placed in a carbonization furnace and carbonized at 800°C under the protection of nitrogen for 3 hours to prepare bamboo charcoal.
[0021] Bamboo charcoal was soaked in 3mol / L nickel sulfate solution for 12 hours, and then suction filtered. Bamboo charcoal was dried at 120°C.
[0022] Put the bamboo charcoal in the prepared silica sol and infiltrate it in vacuum for 10 hours, then take it out and heat it in the oven at 60°C for 4 hours to make the silica sol gelation reaction, and then continue to heat it at 120°C Tumble dry.
[0023] Finally, the bamboo charcoal was placed in a carbonization furnace and carbon...
Embodiment 2
[0027] Take by weighing 5g of bamboo charcoal powder with a particle size of 500 mesh, dry and remove moisture. The bamboo charcoal powder was soaked in a sulfuric acid solution with a concentration of 1mol / L for 18 hours, then suction filtered and rinsed with deionized water until the pH value of the filtrate was 7.
[0028] Dry the bamboo charcoal powder in an oven at 120°C. Then soak the bamboo charcoal powder in 2mol / L ferric chloride solution for 18 hours, then suction filter. Dry the bamboo charcoal powder at 120°C.
[0029] Put the bamboo charcoal powder in the prepared silica sol and infiltrate it in a vacuum for 8 hours, then take it out and keep it in the oven at 60°C for 3 hours, so that the silica sol will undergo gelation reaction, and continue to dry at 120°C Tumble dry.
[0030] Finally, the bamboo charcoal powder is placed in a carbonization furnace and carbonized at 1450°C under the protection of nitrogen. The holding time is 2 hours, and the surface cerami...
Embodiment 3
[0033] Cut bamboo slices of 15mm x 6mm x 3mm from moso bamboo, and dry the bamboo slices to remove moisture. The bamboo slices were soaked in a nitric acid solution with a concentration of 2mol / L for 20 hours, then suction filtered and rinsed with deionized water until the pH value of the filtrate was 7. Bamboo slices were dried at 120°C. Bamboo slices were placed in a carbonization furnace for carbonization treatment at 1000°C under nitrogen protection, and the holding time was 1 hour to prepare bamboo charcoal.
[0034] Bamboo charcoal was soaked in 2.5mol / L ferric chloride solution for 12 hours, and then suction filtered. Bamboo charcoal was soaked in 2.5mol / L nickel sulfate solution for 12 hours, and then suction filtered. Bamboo slices were dried at 120°C.
[0035] Put the bamboo charcoal in the prepared silica sol and infiltrate it in vacuum for 12 hours, then take it out and heat it in the oven at 60°C for 5 hours to make the silica sol gelation reaction, and continu...
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