Manufacturing method of graphene oxide super-thermal conductive aluminum-based copper clad laminate

Abstract

The invention discloses a manufacturing method of a graphene oxide super-thermal conductive aluminum-based copper clad laminate, and belongs to the field of metal substrates. The method comprises thefollowing steps: performing ultrasonic vibration stirring on 100 parts of graphite powder, 10-50 parts of concentrated sulfuric acid and 10-50 parts of potassium permanganate, separating graphene oxide by a high-speed shearing machine, uniformly mixing 50-150 parts of graphene oxide, 100 parts of epoxy resin, 10 parts of polyethylene butyral, 2 parts of dicyandiamide, 100 parts of acetone and 10-50 parts of alumina to obtain a super-thermal conductive medium glue, coating the super-thermal conductive medium glue on the upper surface of an aluminum substrate and the lower surface of a copper foil layer, adhering the upper surface of the aluminum substrate coated with the super-thermal conductive medium glue to the lower surface of the copper foil layer coated with the super-thermal conductive medium glue and performing drying for 5-15 min at 160-170 DEG C to obtain a semi-finished product of the graphene oxide super-thermal conductive aluminum-based copper clad laminate, and performinghot pressing on the semi-finished product for two hours at 170-180 DEG C and 2-4 MPa to obtain the finished product of the graphene oxide super-thermal conductive aluminum-based copper clad laminate.The copper clad laminate can be used as a load bearing substrate for lamps and lanterns. The structure is simple, the effect is good, and the cost is low.

Description

technical field [0001] The invention discloses a method for manufacturing a graphene oxide superconducting heat-conducting aluminum-based copper-clad laminate, which relates to the technical field of metal substrates. Background technique [0002] At present, there are known and current aluminum-based copper-clad laminate products. Since the surface of the LED lamp bead is mounted on the surface of the aluminum-based copper-clad laminate, the heat dissipation of the LED lamp must be dissipated by the aluminum-based copper-clad laminate. However, due to the medium of the aluminum-based copper-clad laminate The thermal conductivity of the layer is lower than 0.5w / m*k, so the LED lamp beads are easy to burn out and have a short life, and high-power LED lamp beads cannot be used. The thermal conductivity of existing high thermal conductivity aluminum-based (and metal-based) copper clad laminates is generally less than 10w / m*k, which cannot meet the needs of use. For the heat co...

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Problems solved by technology

[0002] At present, there are known and current aluminum-based copper-clad laminate products. Since the surface of the LED lamp bead is mounted on the surface of the aluminum-based copper-clad laminate, the heat dissipation of the LED lamp must be dissipated by the aluminum-based copper-clad laminate. However, due to the medium of the aluminum-based copper-clad laminate The thermal conductivity of the layer is lower than 0.5w / m*k, so the LED lamp beads are easy to burn out and have a short life, and high-power LED lamp beads cannot be used

The thermal conductivity of existing high thermal conductivity aluminum base (and metal base) copper clad laminates is generally less than 10w / m*k, which cannot meet the needs of use

For the heat conduction demand of 10w / m*k to 50w / m*k, ceramic-based copper-clad laminates are generally used, but ceramic-based copper-clad laminates generally have high production costs, difficult processing, and it is difficult to produce large-area copper-clad laminate products, which cannot meet the demand.

Due to reasons such as materials and manufacturing methods, the existing known technologies and the current situation have disadvantages, defects and disadvantages of poor heat resistance, thermal conductivity, voltage resistance and flexibility.

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