Method for preparing graphene composite material for pantograph
A technology of composite materials and pantographs, applied in current collectors, electric vehicles, power collectors, etc., can solve problems such as dependence on imports, low manufacturing costs, and high prices, and achieve reduced friction coefficient, increased impact toughness, The effect of improving conductivity
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Embodiment 1
[0019] A method for preparing a graphene composite material for a pantograph, comprising the following steps:
[0020] S1, heat-treating the graphene microchips in a furnace at 340°C for 50 minutes to increase their activity;
[0021] S2, put the graphene microflakes treated in S1 into CuSO 4 In the plating solution, take it out after 4 minutes and wash it with deionized water for 3 times, then put it in a vacuum drying oven to dry;
[0022] The plating solution uses copper sulfate as the main salt, formaldehyde as the reducing agent, and α,α'-bipyridine as the stabilizer;
[0023] Its specific process parameters are:
[0024] 10g / L CuSO 4 +20mL / L HCHO+20g / L Na 2 EDTA+16g / L C 4 h 4 KNa 2 -4H 2 O;
[0025] S3, after uniformly mixing the graphene microchips processed in S2 with graphene powder, copper powder, and additives, put them into a mold and cold press them under a pressure of 200MPa to obtain a composite block;
[0026] Graphene microflakes are uniformly mixed ...
Embodiment 2
[0032] A method for preparing a graphene composite material for a pantograph, comprising the following steps:
[0033] S1, heat-treat the graphene microchips in a furnace at 360°C for 45 minutes to increase their activity;
[0034] S2, put the graphene microflakes treated in S1 into CuSO 4 In the plating solution, take it out after 5 minutes and wash it 4 times with deionized water, then put it in a vacuum drying oven to dry;
[0035] The plating solution uses copper sulfate as the main salt, formaldehyde as the reducing agent, and α,α'-bipyridine as the stabilizer;
[0036] Its specific process parameters are:
[0037] 10g / L CuSO 4 +20mL / L HCHO+20g / L Na 2 EDTA+16g / L C 4 h 4 KNa 2 -4H 2 O;
[0038] S3, after uniformly mixing the graphene microflakes processed in S2 with graphene powder, copper powder, and additives, put them into a mold and cold press them under a pressure of 180MPa to obtain a composite block;
[0039] Graphene microflakes are uniformly mixed with g...
Embodiment 3
[0045] A method for preparing a graphene composite material for a pantograph, comprising the following steps:
[0046] S1, heat-treating the graphene microchips in a furnace at 300°C for 60 minutes to increase their activity;
[0047] S2, put the graphene microflakes treated in S1 into CuSO 4 In the plating solution, take it out after 6 minutes and wash it with deionized water for 5 times, then put it into a vacuum drying oven to dry;
[0048] The plating solution uses copper sulfate as the main salt, formaldehyde as the reducing agent, and α,α'-bipyridine as the stabilizer;
[0049] Its specific process parameters are:
[0050] 10g / L CuSO 4 +20mL / L HCHO+20g / L Na 2 EDTA+16g / L C 4 h 4 KNa 2 -4H 2 O;
[0051] S3, after uniformly mixing the graphene microchips processed in S2 with graphene powder, copper powder, and additives, put them into a mold and cold press them under a pressure of 240MPa to obtain a composite block;
[0052] Graphene microflakes are uniformly mixe...
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