A kind of composite sliding bearing and its preparation method
A technology of sliding bearings and composite materials, which is applied to bearings, shafts, bearings, bearing components, etc., can solve problems such as thermal conductivity, friction coefficient wear, and product use temperature to be improved, so as to solve poor thermal conductivity and improve thermal conductivity The effect of performance and tribological performance improvement
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Embodiment 1
[0022] Embodiment 1: produce the lining composite material of composite sliding bearing according to the following steps:
[0023] S1: soak the open-cell foam metal in 5wt% NaOH aqueous solution for 3 minutes, take it out and wash it in deionized water for 3 minutes, then take it out and dry it in an oven at 120°C for later use;
[0024] S2: Using the Hummers method, the functionalized graphene was obtained by oxidation-exfoliation-reduction of graphite. During the reduction, the graphene was pre-reduced by sodium borohydride, then sulfonated, and then re-reduced by hydrazine. The surface of graphene introduces sulfonic acid groups (—SO3H) and carboxyl groups (—COOH);
[0025] S3: Disperse the functionalized graphene prepared in step S2 in deionized water, prepare a functionalized graphene-hydroelectrodeposition solution with a concentration of 150 mg / L and a temperature of 30°C, and prepare the open-cell metal foam prepared in step S2 Put it in the prepared functionalized gr...
Embodiment 2
[0029] Embodiment 2: produce the lining composite material of composite sliding bearing according to the following steps:
[0030] S1: soak the open-cell foam metal in 5wt% NaOH aqueous solution for 3 minutes, take it out and wash it in deionized water for 3 minutes, then take it out and dry it in an oven at 120°C for later use;
[0031] S2: Using the Hummers method, the functionalized graphene was obtained by oxidation-exfoliation-reduction of graphite. During the reduction, the graphene was pre-reduced by sodium borohydride, then sulfonated, and then re-reduced by hydrazine. The surface of graphene introduces sulfonic acid groups (—SO3H) and carboxyl groups (—COOH);
[0032] S3: Disperse the functionalized graphene prepared in step S2 in deionized water, prepare a functionalized graphene-hydroelectrodeposition solution with a concentration of 100mgmg / L and a temperature of 40°C, and prepare the open-cell metal foam prepared in step S2 Place in the prepared functionalized gr...
Embodiment 3
[0036] Embodiment 3: produce the lining composite material of composite sliding bearing according to the following steps:
[0037] S1: soak the open-cell foam metal in 5wt% NaOH aqueous solution for 3 minutes, take it out and wash it in deionized water for 3 minutes, then take it out and dry it in an oven at 120°C for later use;
[0038] S2: Using the Hummers method, the functionalized graphene was obtained by oxidation-exfoliation-reduction of graphite. During the reduction, the graphene was pre-reduced by sodium borohydride, then sulfonated, and then re-reduced by hydrazine. The surface of graphene introduces sulfonic acid groups (—SO3H) and carboxyl groups (—COOH);
[0039] S3: Disperse the functionalized graphene prepared in step S2 in deionized water, prepare a functionalized graphene-hydroelectrodeposition solution with a concentration of 200mg / L and a temperature of 20°C, and prepare the open-cell metal foam prepared in step S2 Place in the prepared functionalized grap...
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Abstract
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