Preparation method of cobalt sulfide composite nano material
A technology of composite nanomaterials and cobalt sulfide, applied in the field of wave absorbing materials, can solve problems such as weak microwave absorption ability, and achieve the effects of controllable electromagnetic parameters, wide source of raw materials, and easy processing and molding.
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Embodiment 1
[0028] In parts by weight, 30 parts by mass fraction of 0.2% nickel nitrate solution, 15 parts by mass fraction of 0.7% ferric nitrate solution, 1 part of acrylamide, 3 parts of N,N'-methylenebisacrylamide, Mix 0.1 part of ammonium persulfate with a mass fraction of 0.2% nickel nitrate solution and a mass fraction of 0.7% ferric nitrate solution, and stir ultrasonically for 20 minutes at a stirring speed of 200r / min and an ultrasonic power of 300W to obtain a dispersion. Add acrylamide and N,N'-methylenebisacrylamide to the solution, and continue to stir for 20 minutes to obtain the reaction solution. Add ammonium persulfate to the reaction solution, stir in a water bath at a temperature of 70°C for 1 hour, and obtain the wet coagulation solution. Put the wet gel in an oven at a temperature of 90°C to dry to constant weight, cool to room temperature, and grind to obtain nickel ferrite powder; in parts by weight, weigh 4 parts of cobalt chloride hexahydrate, 0.3 Parts of nickel...
Embodiment 2
[0030] In parts by weight, 35 parts of 0.2% nickel nitrate solution, 17 parts of 0.7% iron nitrate solution, 3 parts of acrylamide, 5 parts of N,N'-methylenebisacrylamide, Mix 0.2 parts of ammonium persulfate with a mass fraction of 0.2% nickel nitrate solution and a mass fraction of 0.7% ferric nitrate solution, and stir ultrasonically for 25 minutes at a stirring speed of 250r / min and an ultrasonic power of 325W to obtain a dispersion. Add acrylamide and N,N'-methylenebisacrylamide to the solution, and continue to stir for 25 minutes to obtain the reaction solution. Add ammonium persulfate to the reaction solution, and stir in a water bath at a temperature of 75°C for 1.5 hours to obtain wet Gel, the wet gel is placed in an oven at a temperature of 95 to dry to constant weight, cooled to room temperature, and ground to obtain nickel ferrite powder; in parts by weight, weigh 6 parts of cobalt chloride hexahydrate, 0.4 parts of nickel ferrite powder, 17 parts of thiourea, 10 p...
Embodiment 3
[0032] In terms of parts by weight, weigh 40 parts of 0.2% nickel nitrate solution, 20 parts of 0.7% iron nitrate solution, 5 parts of acrylamide, 7 parts of N,N'-methylenebisacrylamide, Mix 0.3 parts of ammonium persulfate with a mass fraction of 0.2% nickel nitrate solution and a mass fraction of 0.7% ferric nitrate solution, and stir ultrasonically for 30 minutes at a stirring speed of 300r / min and an ultrasonic power of 350W to obtain a dispersion. Add acrylamide and N,N'-methylenebisacrylamide to the solution, and continue to stir for 30 minutes to obtain the reaction solution. Add ammonium persulfate to the reaction solution, stir in a water bath at a temperature of 80°C for 2 hours, and obtain the wet coagulation Gel, put the wet gel in an oven with a temperature of 100 to dry to constant weight, cool to room temperature, and grind to obtain nickel ferrite powder; in parts by weight, weigh 8 parts of cobalt chloride hexahydrate, 0.5 Parts of nickel ferrite powder, 20 pa...
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