Method for preparing multilayer graphene
A technology of multi-layer graphene and acrylic acid, which is applied in the field of graphene material preparation, can solve the problems of high cost and complicated preparation process, and achieve the effects of convenient operation, abundant raw material sources, and mild and controllable reaction process
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[0031] Example 1:
[0032] After mixing sodium-based montmorillonite and cetyltrimethylammonium bromide at a mass ratio of 1:1, add it to distilled water at a liquid-solid mass ratio of 100ml / g, and heat and stir at 80℃ for 12h. After centrifugation, washing with distilled water to neutrality, and drying, organically modified sodium-based montmorillonite is obtained.
[0033] A three-necked flask equipped with a stirrer was charged with 92.5 parts of styrene and 0.46 parts of benzoyl peroxide according to the mass ratio, and 5 parts of organically modified sodium montmorillonite were added to the three-necked flask under nitrogen protection and stirring. Soil and 2.5 parts of iron are heated to 85°C for polymerization to a viscous flowable prepolymer, and then placed in an oven at 70°C for 24 hours to cure into a polystyrene compound. Then it was heated at 900° C. under a nitrogen atmosphere with a flow rate of 200 ml / min for 10 min. The obtained mixture containing multi-layer gr...
Example Embodiment
[0035] Example 2:
[0036] After mixing sodium-based montmorillonite and cetyltrimethylammonium bromide at a mass ratio of 1:2, add it to distilled water at a liquid-solid mass ratio of 100ml / g, and heat and stir at 80°C for 48h. After centrifugation, washing with distilled water to neutrality, and drying, organically modified sodium-based montmorillonite is obtained.
[0037] In a three-necked flask equipped with a stirrer, 92.5 parts of styrene and 4.925 parts of benzoyl peroxide were charged according to the mass ratio, and 5 parts of organically modified sodium montmorillonite were added to the flask under nitrogen protection and stirring. And 2.5 parts of copper, heated to 85°C for polymerization to a viscous flowable prepolymer, and then placed in an oven at 80°C for 12h to cure into a polystyrene compound. Then it was heated at 1000° C. under a nitrogen atmosphere with a flow rate of 100 ml / min for 15 minutes. The obtained mixture containing multilayer graphene is added to...
Example Embodiment
[0039] Example 3:
[0040] The molar ratio of ferric chloride, sodium silicate and zinc acetate is made into a solution with a molar ratio of 1.4:3.8:0.25, the pH is adjusted to 12.5, and the solution is placed in an autoclave at 140°C for 72 hours to obtain iron-based montmorillonite. After mixing the iron-based montmorillonite prepared above and octadecyl dimethyl benzyl ammonium bromide at a mass ratio of 1:0.5, add it to distilled water at a liquid-to-solid mass ratio of 80ml / g. After heating and stirring at ℃ for 4h, centrifugal separation, then washing with distilled water to neutrality, and drying to obtain organically modified iron-based montmorillonite.
[0041] In a three-necked flask equipped with a stirrer, 88 parts of methyl methacrylate and 0.264 parts of benzoyl peroxide were charged according to the mass ratio, and 8 parts of organically modified iron were added to the flask under nitrogen protection and stirring. The base montmorillonite and 4 parts of copper are ...
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