Three-dimensional continuous graphene-copper composite material and preparation method thereof
A composite material and graphene technology, which is applied in metal material coating process, gaseous chemical plating, coating, etc., can solve the problems of poor interfacial bonding of substrates and easy agglomeration of graphene, and achieve improved strength, good interfacial bonding, Achieve uniform dispersion
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[0026] A preparation method of a three-dimensional continuous graphene / copper composite material, comprising the steps of:
[0027] 1) Preparation of bulk porous copper, weighing a certain amount of copper powder, putting it into a mold, and pressing the powder into tablets with a pressure of 50-150MPa, the holding time is 10min, after the end of the holding pressure, a uniform thickness is obtained after demoulding porous copper block;
[0028] 2) The preparation of three-dimensional continuous graphene, put the porous copper block prepared in step 1) into the constant temperature zone in the chemical vapor deposition furnace, first pass argon gas to remove the air, set the heating rate to 1-10 °C / min, pass Inject hydrogen and acetylene to deposit hydrogenated graphite on the porous copper block. When the deposition of hydrogenated graphite is completed, turn off the argon and acetylene, and keep the flow rate of hydrogen unchanged. Move the chemical vapor deposition furnace ...
example 1
[0038] A three-dimensional continuous graphene / copper composite material and a preparation method thereof, comprising the steps of:
[0039] 1) Preparation of bulk porous copper, weigh 7g of copper powder with a particle size of 3-5 μm, the copper powder is non-spherical pure copper powder, put the copper powder into a square mold, and scrape the copper powder in the mold with a blade , to ensure the uniformity of the thickness of the porous copper block, and then put the mold into the tablet press, the pressure strength used is 85MPa, the pressure holding time is 10min, and finally the size is 40×16×2mm and the thickness is uniform after demoulding. porous copper block;
[0040] 2) The preparation of three-dimensional continuous graphene, put the porous copper block prepared in step 1) into the constant temperature zone in the chemical vapor deposition furnace, first pass argon gas to exhaust the air, set the heating rate to 1-10 °C / min, When the temperature reaches 200°C-40...
example 2
[0044]A three-dimensional continuous graphene / copper composite material and a preparation method thereof, comprising the steps of:
[0045] 1) The preparation of bulk porous copper is the same as in Example 1;
[0046] 2) The preparation of three-dimensional continuous graphene, put the porous copper block prepared in step 1) into the constant temperature zone in the chemical vapor deposition furnace, first pass argon gas to exhaust the air, set the heating rate to 1-10 °C / min, When the temperature reaches 300°C, feed hydrogen and acetylene, the ratio of argon, hydrogen and acetylene is 500:200:5, deposit hydrogenated graphite on the porous copper block, grow hydrogenated graphite for 1min, when the hydrogenated graphite is deposited, turn off the argon Gas, acetylene, and hydrogen gas flow rates remain unchanged. Move the chemical vapor deposition furnace out of the sample area and continue to heat up. When the temperature rises to 800°C, crack the carbon source. The cracking...
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