Preparation method of graphene/Fe3O4/polyaniline ternary wave-absorbing composite material
A composite material and graphene technology, which is applied in the production field of ternary composite conductive materials, can solve problems such as low magnetic permeability, poor impedance matching, and high complex permittivity, so as to improve impedance matching, realize impedance matching, increase The effect of specific surface area
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Embodiment 1
[0027] Weigh graphite oxide, Fe 3 o 4 Put 0.186g of each into 150mL of deionized water, and ultrasonically disperse it fully for 30min; then transfer the above suspension into a three-necked flask, add 0.558g of aniline, and heat it in a water bath at 95°C for 4h; then cool the water bath to 0~ At 5°C, add 7.5g of acetic acid and stir for 0.5h to make the pH of the mixed system 0.
[0028] Dissolve 1.824g of ammonium persulfate in 50mL of deionized water, and then slowly add it dropwise to the above mixed system for 1h to carry out oxidative polymerization for 24h.
[0029] Finally, the prepared graphene / Fe 3 o 4 The / PANI composite material was washed and centrifuged with ethanol and distilled water respectively, and dried in an oven at 80° C. for 12 to 24 hours to obtain a powder material.
Embodiment 2
[0031] Weigh graphite oxide, Fe 3 o 4 Put 0.186g of each into 150mL deionized water, and ultrasonically disperse it fully for 30min; then transfer the above suspension into a three-necked flask, add 0.558g of aniline, and heat it in a water bath at 95°C for 4h; then cool the water bath to 0~ At 5°C, add 7.5g of acetic acid and stir for 0.5h to make the pH of the mixed system 4.
[0032] 2.188g of ammonium persulfate was dissolved in 50mL of deionized water, and then slowly added dropwise to the above mixed system for 1h to carry out oxidative polymerization for 24h.
[0033] Finally, the prepared graphene / Fe 3 o 4 The / PANI composite material was washed with ethanol and distilled water, centrifuged and dried at 80° C. for 12 to 24 hours to obtain a powder material.
Embodiment 3
[0035] Weigh graphite oxide, Fe 3 o 4Put 0.186g of each into 150mL deionized water, and ultrasonically disperse it fully for 30min; then transfer the above suspension into a three-necked flask, add 0.558g of aniline, and heat in a water bath at 95°C for 4h; then cool the water bath to 0~ At 5°C, add 7.5g of acetic acid and stir for 0.5h to make the pH of the mixed system 3.
[0036] 2.736g of ammonium persulfate was dissolved in 50mL of deionized water, and then slowly added dropwise to the above mixed system for 1h to carry out oxidative polymerization for 24h.
[0037] Finally, the prepared graphene / Fe 3 o 4 The / PANI composite material was washed with ethanol and distilled water, centrifuged and dried at 80° C. for 12 to 24 hours to obtain a powder material.
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