A kind of preparation method of carbon/polyaniline microwave-absorbing microsphere
A technology of polyaniline and carbon microspheres, applied in the field of wave absorbing materials, can solve the problems of harsh preparation conditions, expensive carbon nanotubes and graphene, etc., and achieve the effects of excellent wave absorption performance, low price and simple preparation process.
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[0024] A method for preparing carbon / polyaniline wave-absorbing microspheres, using phenolic resin as a carbon source to prepare carbon microspheres, using the carbon microspheres as a matrix, coating a layer of polyaniline nanorod material on the surface of the carbon microspheres, and preparing Carbon / polyaniline absorbing microspheres.
[0025] Specifically, first, the preparation method of carbon microspheres is as follows:
[0026] Ammonia, ethanol and deionized water were prepared into a homogeneous solution at a volume ratio of 1:80:200; 0.4 g of resorcinol was dissolved in the prepared solution and stirred for 30 min; subsequently, 0.56 ml of formaldehyde solution Add it dropwise to the solution, place the solution in a water bath at 30°C for 24 h; then transfer the reacted solution to a hydrothermal kettle, and react at 100°C for 24 h, and the obtained product is washed with ethanol and desiccated Alternately washed with deionized water for several times, dried at 50...
Embodiment 1
[0036] A method for preparing carbon / polyaniline wave-absorbing microspheres, using phenolic resin as a carbon source to prepare carbon microspheres, using the carbon microspheres as a matrix, coating a layer of polyaniline nanorod material on the surface of the carbon microspheres, and preparing Carbon / polyaniline absorbing microspheres.
[0037] The preparation method of carbon microspheres is as follows:
[0038] Ammonia, ethanol and deionized water are prepared into a uniform solution at a volume ratio of 1:80:200, wherein 0.2ml, 16ml and 40l are mentioned respectively; 0.4 g resorcinol is dissolved in the prepared solution, and stirred for 30 min; then, 0.56ml of formaldehyde solution was added dropwise to the solution, and the solution was placed in a water bath with a temperature of 30°C for 24 h; The product was reacted at low temperature for 24 h, and the obtained product was alternately washed with ethanol and deionized water for several times and then dried at 50 °...
Embodiment 2
[0041] A method for preparing carbon / polyaniline wave-absorbing microspheres, using phenolic resin as a carbon source to prepare carbon microspheres, using the carbon microspheres as a matrix, coating a layer of polyaniline nanorod material on the surface of the carbon microspheres, and preparing Carbon / polyaniline absorbing microspheres.
[0042]Ammonia, ethanol and deionized water are prepared into a uniform solution at a volume ratio of 1:80:200, wherein 0.2ml, 16ml and 40l are mentioned respectively; 0.4 g resorcinol is dissolved in the prepared solution, and stirred for 30 min; and added 0.05 g of disodium hydrogen phosphate, stirred evenly,
[0043] Subsequently, 0.56 ml of formaldehyde solution was added dropwise to the solution, and the solution was placed in a water bath at a temperature of 30°C for 24 h, wherein 0.05-0.08 g of carboxymethyl cellulose was added when the reaction reached 3-5 h, And stir evenly to dissolve and continue to react; then transfer the react...
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