A kind of preparation method of low oxidation degree graphene modified polymethyl methacrylate composite material
A technology of polymethyl methacrylate and methyl methacrylate is applied to the preparation of graphene/polymer composite materials, and the preparation field of graphene modified polymethyl methacrylate composite materials with low degree of oxidation can solve the problem. Increase the operation process and cost, difficult industrial application and other issues to achieve the effect of good industrial application value
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Embodiment 1
[0029] 1) Mix 2 g of expanded graphite, 300 ml of concentrated sulfuric acid, and 20 g of potassium permanganate into a 500 ml three-necked flask, and react at 35°C for 15 minutes to obtain expanded graphite (EGIC) with a low degree of oxidation.
[0030] 2) The above EGIC was added to 300 ml deionized water, and 2 g of alkylphenol polyoxyethylene ether was added, and the water bath was ultrasonicated for 5 hours to obtain a low-oxidation graphene aqueous solution.
[0031] 3) Centrifuge and wash the above graphene aqueous solution, remove the supernatant, and disperse a certain amount of graphene in the lower layer into 100 ml NMP solvent to obtain a graphene solution (1 mg / ml—where ml is the volume of NMP). Then the graphene solution was transferred to a 500 ml three-necked flask, and 30 g of methyl methacrylate and 0.15 g of dibenzoyl peroxide were added to the solution. Now stir for 30 minutes under the protection of nitrogen, and then raise the temperature to 80° C. for 7...
Embodiment 2
[0034]1) Mix 2 g of expanded graphite, 300 ml of concentrated sulfuric acid, and 10 g of potassium dichromate into a 500 ml three-necked flask, and react at 35°C for 30 minutes to obtain expanded graphite (EGIC) with a low degree of oxidation.
[0035] 2) The above EGIC was added to 300 ml of deionized water, and 0.2 g of fatty acid polyoxyethylene ether was added, and a high-speed shearing treatment was performed at 1000 rpm for 10 hours to obtain a low-oxidation graphene aqueous solution.
[0036] 3) Centrifuge and wash the above graphene aqueous solution, remove the supernatant, and disperse a certain amount of graphene in the lower layer into 100 ml NMP solvent to obtain a graphene solution (1 mg / ml—where ml is the volume of NMP). Then the graphene solution was transferred to a 500 ml three-necked flask, and 30 g of methyl methacrylate and 0.15 g of dibenzoyl peroxide were added to the solution. Now stir for 30 minutes under the protection of nitrogen, and then raise the t...
Embodiment 3
[0038] 1) Mix 2 g of expanded graphite, 300 ml of concentrated sulfuric acid, and 3 g of potassium perchlorate into a 500 ml three-necked flask, and react at 35°C for 30 minutes to obtain expanded graphite (EGIC) with a low degree of oxidation.
[0039] 2) Add the above EGIC to 300 ml of deionized water, and add 5 g of fatty acid methyl ester ethyl oxide, and perform high-speed shear treatment at 100,000 rpm for 1 hour to obtain a low-oxidation graphene aqueous solution.
[0040] 3) Centrifuge and wash the above graphene aqueous solution, remove the supernatant, and disperse a certain amount of graphene in the lower layer into 100 ml NMP solvent to obtain a graphene solution (1 mg / ml—where ml is the volume of NMP). Then the graphene solution was transferred to a 500 ml three-necked flask, and 30 g of methyl methacrylate and 0.15 g of dibenzoyl peroxide were added to the solution. Now stir for 30 minutes under the protection of nitrogen, and then raise the temperature to 80° C....
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