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PCB taking graphene-metal composite material as conductive circuit, manufacturing method of PCB and motor

A technology of metal composite materials and conductive lines, applied in the direction of metal pattern materials, printed circuit manufacturing, printed circuits, etc., can solve the problems of restricting the weight of PCB, the gap of copper conductive lines, and large copper conductive lines, so as to reduce the total Weight, broaden the PCB application market, the effect of uniform dispersion

Pending Publication Date: 2019-12-31
SICHUAN JUCHUANG SHIMOXI TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Copper conductive lines account for a large proportion of the total weight of the entire PCB. When the substrate material has been developed to be extremely light, the weight of copper conductive lines becomes a short board that restricts the further lightening of PCB
[0003] In addition, copper conductive lines have trace resistance, and the trace resistance of copper conductive traces will change significantly due to severe temperature rise. At the same time, oxidation and corrosion will occur with the prolongation of use time, resulting in further changes in trace resistance. There may even be gaps or breaks in copper conductive lines, which directly affect the transmission of electrical signals

Method used

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  • PCB taking graphene-metal composite material as conductive circuit, manufacturing method of PCB and motor
  • PCB taking graphene-metal composite material as conductive circuit, manufacturing method of PCB and motor
  • PCB taking graphene-metal composite material as conductive circuit, manufacturing method of PCB and motor

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Effect test

Embodiment 1

[0044] see figure 1As shown, the present embodiment provides a PCB with a graphene-metal composite material as a conductive circuit, and the PCB includes one or more layers of substrate boards 10 and bottom conductive wires 20 on the surface of the substrate board 10 , the surface of the bottom conductive wire 20 is covered with a graphene-metal composite material layer 30 . The graphene-metal composite material layer 30 serves as a conductive circuit.

[0045] For example, the metal element in the graphene-metal composite material layer is copper, zinc, chromium, gallium, indium, iron, nickel, silver, platinum or gold, or the metal element includes any two or more of the above elements. two or more elements.

[0046] For example, the metal element in the graphene-metal composite material layer is copper, and the graphene-metal composite material is a composite material containing graphene in copper.

[0047] For example, the bottom conductive wires 20 may be copper wires. ...

Embodiment 2

[0050] This embodiment provides a method for preparing the PCB described in Embodiment 1, the method specifically comprising:

[0051] S1, making a substrate plate, the surface of the substrate plate is covered with metal foil;

[0052] S2, etching the metal foil into bottom conductive wires;

[0053] S3, dispersing the graphene oxide in the ionic liquid, the ionic liquid contains metal ions;

[0054] S4, using the ionic liquid as the electroplating solution, using the underlying conductive wire on the surface of the substrate as the cathode substrate, and depositing a graphene-metal composite coating on the cathode substrate by a current control pulse, the current The control pulse includes a positive-going pulse period in which the current is negative at the deposition surface, and a pause period in which the current is zero; or,

[0055] The ionic liquid is used as the electroplating solution, and the underlying conductive wire on the surface of the substrate plate is use...

specific Embodiment approach 1

[0058] Specific embodiment 1: select choline chloride and ethylene glycol that molar ratio is 1:1 for use as ionic liquid; Contain graphene oxide in this ionic liquid, the concentration of graphene oxide is 0.2g / L; Contain in this ionic liquid Copper ions, the concentration of copper ions is 1 mM.

[0059] The above-mentioned ionic liquid is used as the electroplating solution, the bottom conductive wire of the base plate is selected as the cathode substrate, and the platinum sheet is selected as the anode, and a power supply that can provide pulses is used to apply current-controlled pulses, wherein the duration of the positive pulse period The time was 40 ms, the current density was -0.5ASD, and the duration of the pause period was 60 ms. The ionic liquid was stirred without a stirrer during plating.

[0060] During pulse plating, current density and corresponding voltage changes, see figure 2 and image 3 shown. For the macroscopic picture of the graphene composite coa...

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Abstract

The invention provides a PCB taking a graphene-metal composite material as a conductive circuit, a motor and a manufacturing method for the PCB. The PCB comprises one or more layers of base material plates and bottom-layer conductive wires on the surfaces of the base material plates, and the bottom-layer conductive wire is provided with a graphene-metal composite material layer. The graphene-metalcomposite material layer is used as a main conductor of the conductive circuit of the PCB; compared with a pure copper material, the graphene-metal composite material has a higher conductivity and alower density, and thus, the copper amount and the total weight of the PCB provided by the invention can be reduced under the condition of maintaining the electric power of the circuit, and the defectof restricting further light weight of the PCB is overcome. The PCB provided by the invention can bear higher circuit electric power under the condition of maintaining the thickness of the conductivewire, and the application market of the PCB is broadened.

Description

technical field [0001] The invention relates to the technical field of printed circuit board (PCB) manufacturing technology, in particular to a PCB with a graphene-metal composite material as a conductive circuit and a manufacturing method thereof, and a motor. Background technique [0002] PCB (Printed Circuit Board), the Chinese name is printed circuit board, which is an important electronic component and serves as a support for electronic components. A PCB that has not packaged electronic components mainly includes a substrate board and conductive lines on the surface of the substrate board. The substrate board is mainly used as a support and an insulating layer, and it needs to have certain mechanical strength and voltage breakdown capability. Existing The substrate board generally uses light boards such as paper substrates, epoxy glass fiber cloth substrates or phenolic resin boards. The conductive lines on the surface of the base plate are mostly formed by inner layer...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K1/09H05K3/18C25D5/18C25D3/38C25D7/06C25D15/00
CPCC25D3/38C25D5/18C25D7/0614C25D15/00H05K1/09H05K3/188
Inventor 黄迎春刘焕明郑兴平
Owner SICHUAN JUCHUANG SHIMOXI TECH CO LTD
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