A kind of preparation method of metal matrix graphene composite material
A technology of composite materials and graphene, which is applied in the field of preparation of metal-based graphene composite materials, can solve the problems of poor strength and electrical conductivity, poor wettability and dispersibility of composite materials, and achieve enhanced dispersibility and increased wettability , the effect of increased strength and conductivity
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[0025] combine figure 1 Shown, the application provides a kind of preparation method of metal-based graphene composite material, specifically comprises the following steps:
[0026] S1. Prepare graphene oxide powder.
[0027] Specifically, step S1 can use the following method to prepare graphene oxide powder, specifically including the following sub-steps:
[0028] S11. Mix concentrated sulfuric acid and concentrated phosphoric acid at a volume ratio of 5-10:1 to obtain a mixed acid solution. Among them, concentrated sulfuric acid with a mass fraction of 98% and concentrated sulfuric acid with a mass fraction of 85% are generally used.
[0029] S12. Add graphite to the mixed acid solution, and mix the mixed acid solution and graphite according to a liquid-solid ratio of 200ml:1-2g, and obtain a mixed material after mixing. Graphite generally can adopt flake graphite, and can also adopt other shapes according to actual needs, which is not limited in the comparison of this ap...
Embodiment 1
[0049] S1, prepare graphene oxide powder, specifically include the following sub-steps:
[0050] S11. Mix 200ml of acid, concentrated sulfuric acid (98%):concentrated phosphoric acid (85%)=5:1, put it into a clean and dry beaker, set aside; weigh 5g of potassium permanganate, set aside.
[0051] S12. Take 1g of flake graphite and place it in a 500ml large beaker that has been repeatedly washed and dried. Slowly pour the above-mentioned mixed acid into the beaker filled with graphite along the wall of the cup to obtain a mixed material for use.
[0052] S13. Put the above mixed material in a magnetic stirring oil bath that has been preheated to 40° C., and start to slowly add potassium permanganate, and react for 5 hours to obtain a premixed graphite solution.
[0053] S14. Add diluted hydrogen peroxide to the pre-oxidized graphite solution under heating and stirring at 40°C until the color of the solution changes from black to slightly purple and finally to bright yellow and n...
Embodiment 2
[0061] S1, prepare graphene oxide powder, specifically include the following sub-steps:
[0062] S11. Mix 200ml of acid, concentrated sulfuric acid (98%):concentrated phosphoric acid (85%)=9:1, put it into a clean and dry beaker, set aside; weigh 10g of potassium permanganate, set aside.
[0063] S12. Take 1g of flake graphite and place it in a 500ml large beaker that has been repeatedly washed and dried. Slowly pour the above-mentioned mixed acid into the beaker filled with graphite along the wall of the cup to obtain a mixed material for use.
[0064] S13. Put the above mixed material in a magnetic stirring oil bath that has been preheated to 70° C., and start to slowly add potassium permanganate, and react for 10 hours to obtain a premixed graphite solution.
[0065] S14. Add diluted hydrogen peroxide to the pre-oxidized graphite solution under heating and stirring at 70°C until the color of the solution changes from black to slightly purple and finally to bright yellow and...
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