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A method and device for producing high-strength, high-conductivity graphene copper-based powder material

A powder material, alkenyl copper-based technology, which is applied in the field of new functional powder material preparation, can solve the problems of inability to solve the dispersibility and compatibility of two-phase materials, great influence on the quality of later products, and unsuitable for large-scale production. , to achieve the effects of excellent electrical/thermal conductivity, mechanical properties, good light transmittance, and excellent comprehensive performance

Active Publication Date: 2017-09-19
SPECIAL EQUIP SAFETY SUPERVISION INSPECTION INST OF JIANGSU PROVINCE
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The above-mentioned technical means for obtaining graphene / copper-based composite materials can be divided into two categories. One is to physically blend copper powder and graphene materials, and then perform corresponding post-processing to obtain composite materials. This technical route is still not available. Solve the problem of good dispersion and compatibility between two-phase materials; the other is to pre-treat copper powder, and then grow graphene to obtain composite materials. This technical route better solves the problem of two-phase materials. Excellent dispersion and compatibility, but the pretreatment of copper powder is complicated and time-consuming, and the quality of pretreatment has a great impact on the quality of later products, so it is not suitable for large-scale production

Method used

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  • A method and device for producing high-strength, high-conductivity graphene copper-based powder material
  • A method and device for producing high-strength, high-conductivity graphene copper-based powder material
  • A method and device for producing high-strength, high-conductivity graphene copper-based powder material

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Effect test

Embodiment 1

[0043] Such as figure 1 As shown, the device for producing high-strength and high-conductivity graphene copper-based powder materials provided by this embodiment includes a gas atomization powder making device, an air inlet device, a gas scrubbing device 15, a step-by-step temperature control device and a material speed reduction device 10 ;

[0044] Wherein, the gas atomization powder making device includes a high-pressure gas source system and a smelting chamber 3, an atomization chamber 6, and a collector 16 connected sequentially from top to bottom, and a crucible 4 is arranged inside the smelting chamber 3, and the crucible 4 A nozzle 5 for spraying liquid into the atomization chamber 6 is provided at the bottom, the high-pressure gas source system includes a high-pressure inert gas source 1 and a high-pressure inert gas source pressure regulating valve 2 for controlling the high-pressure inert gas source 1, and the high-pressure gas source system The inert gas source 1 ...

Embodiment 2

[0050] Such as figure 1 As shown, firstly, the air in the atomization chamber 6 and the collector 16 is drawn out through the gas scrubber 15; secondly, the argon gas source 13 and its pressure regulating valve 14 are opened to replenish the air in the atomization chamber 6 and the collector 16. Pure argon; the 3rd, repeat above-mentioned steps no less than three times, the air replacement in atomizing chamber 6 and collector 16 is clean; select methane) and its corresponding pressure regulating valve 14 to keep hydrogen entering the atomization chamber 6 with a flow of 300 sccm and methane at a flow rate of 20 sccm, and maintain the dynamic balance of the mixed gas through the scrubber 15; The 5kg copper material in 4 is heated to 1100°C for melting, and at the same time, the heating controller 9 is turned on to heat the resistance wire 6 to realize the temperature gradient of 1080°C, 950°C and 850°C from top to bottom of the heat radiation plate 8 and the atomization chamber...

Embodiment 3

[0053] The air pressure of the high-pressure inert gas source is different from the air flow and the diameter flow of the nozzle metal liquid, and the size of the gas atomized metal particles produced will also be different. Therefore, in order to obtain copper powder of different sizes, the air pressure and flow rate of the inert gas source can be adjusted. And choose different nozzle metal liquid diameter. If the basic steps described in Example 2 are adopted, the difference is that the high-pressure inert gas source 1 and the high-pressure inert gas source pressure regulating valve 2 are opened, and the gas pressure of 0.7MPa and 2m 3 The gas flow rate per minute enters the nozzle 5 with a diameter of 4mm of molten metal, sprays the molten high-temperature liquid copper into the atomization chamber 6, and obtains a graphene copper-based powder composite material with a larger particle equivalent diameter.

[0054] Gained graphene copper-based powder composite material Raman...

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Abstract

The invention provides a preparation method and device for producing high-strength and high-conductivity graphene copper-based powder composite materials, based on liquid copper gas atomization powder making technology, by adding multiple The air path controllable air intake system and controllable scrubbing device, step-by-step temperature control device and material speed reduction device are added inside the atomization chamber, so that high-temperature liquid copper is atomized into high-temperature micro copper liquid under the impact of high-speed airflow After dropping, it enters the atmosphere of the atomization chamber containing a certain proportion of carbon source gas components, so that the atomized copper droplets can realize the graphene material on the surface of the copper powder particles under the action of the temperature control solidification process and / or the deceleration of the material speed reduction device. In-situ coating growth, and finally obtain a new type of high-strength, high-conductivity graphene copper-based powder composite material. The invention can be directly connected to the existing copper-based material atomization powder-making industry, the performance and added value of the obtained product are greatly improved, and it is suitable for the technical transformation and product upgrading application of the copper powder production industry.

Description

technical field [0001] The invention belongs to the technical field of preparation of novel functional powder materials, and in particular relates to a method and a device for producing graphene copper-based powder composite materials with high strength, high thermal conductivity and high conductivity. Background technique [0002] As a basic industrial material, copper powder is widely used in the world's auto industry parts, heat dissipation modules, electronic appliances, friction materials, conductive inks, oil bearings, electrical appliances, etc. Contact materials, electric carbon products, chemical contacts, diamond tools, filters, mechanical parts processing, electrical alloys and other fields, quasi-spherical and spherical copper powders are used in injection molding, welding materials, electronic material production fields, and play an important role in industrial production. play an important role. [0003] Due to reasons such as energy consumption and environmen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F9/08B22F1/02
CPCB22F9/082B22F2009/086B22F2009/0844B22F1/16
Inventor 杨永强王勤生刘峥邓宏康孙小伟百坚毅金玲熊立斌
Owner SPECIAL EQUIP SAFETY SUPERVISION INSPECTION INST OF JIANGSU PROVINCE
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