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A kind of graphene composite metal sheet and preparation method thereof

A graphene composite, graphene sheet technology, applied in metal layered products, chemical instruments and methods, layered products, etc., can solve problems such as environmental pollution, limited application, poor thermal conductivity, etc., and achieve the effect of reducing high costs

Active Publication Date: 2018-12-07
东莞市钜锋电子材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the expansion coefficient of iron is smaller than that of copper, its application in such fields is limited due to its poor electrical and thermal conductivity.
Ceramic materials, especially high thermal conductivity ceramic materials, have excellent thermal conductivity, but they are insulating materials, and they also have the defects of high price, fragility and environmental pollution, which cannot meet modern mass production operations and applications

Method used

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  • A kind of graphene composite metal sheet and preparation method thereof

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preparation example Construction

[0019] A graphene composite metal sheet and a preparation method thereof, which is composed of graphene sheets and metal sheets alternately laminated, firstly the graphene powder is processed to obtain modified graphene, and then obtained by melt extrusion Graphene sheet, and then the obtained graphene sheet and iron sheet of certain thickness can be obtained graphene composite metal sheet through calendering. The specific process steps are as follows:

[0020] (1) Preparation of graphene sheet: take 86-92 parts of graphene powder for automatic dehumidification, transport it to a high-low temperature blending kettle with an automatic metering and feeding system, and then add 3-8 parts of liquid silicone and 4- 6 parts of bismaleimide, blending and copolymerization at a low speed at 230 ° C, and then adding 0.02 to 0.1 parts of curing accelerator to adjust the polymerization, and then automatically convey the obtained modified graphene powder to the conical A twin-screw extrud...

Embodiment 1

[0033] First, after automatic dehumidification of 90 parts of graphene powder, it is transported to a high-low temperature blending tank with an automatic metering and feeding system, and then 5.54 parts of side-containing hydrogen silicone oil and 4.4 parts of diphenylmethane bismaleimide are added. Perform low-speed blending and copolymerization at 230°C, then add 0.06 parts of 2-methylimidazole to adjust polymerization, and then automatically transport the obtained modified graphene powder to a conical twin-screw extruder for melt extrusion, Graphene sheets are obtained; then the preheated iron strips of a certain thickness and the graphene sheets are simultaneously conveyed to large heating calender rollers, the temperature is controlled at 260°C-280°C, and the graphene A layer of adhesive is applied on the surface of the iron sheet combined with the sheets. After the graphene sheet and the iron sheet are docked, the two are tightly rolled in the two-roll calendering, and t...

Embodiment 2

[0035] First, after automatic dehumidification of 92 parts of graphene powder, it is transported to a high-low temperature blending tank with an automatic metering and feeding system, and then 3.98 parts of side-containing hydrogen silicone oil and 4.0 parts of diphenylmethane bismaleimide are added, Perform low-speed blending and copolymerization at 230°C, then add 0.02 parts of 2-methylimidazole to adjust polymerization, and then automatically transport the obtained modified graphene powder to a conical twin-screw extruder for melt extrusion, Graphene sheets are obtained; then the preheated iron strips of a certain thickness and the graphene sheets are simultaneously conveyed to large heating calender rollers, the temperature is controlled at 260°C-280°C, and the graphene A layer of adhesive is applied on the surface of the iron sheet combined with the sheets. After the graphene sheet and the iron sheet are docked, the two are tightly rolled in the two-roll calendering, and t...

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Abstract

The invention discloses a graphene composite metal sheet and a preparation method thereof. The material is formed by compositing graphene sheets and metal sheets alternately, specifically, firstly, graphene powder is copolymerized through hydrogen-containing silicone oil and bismaleimide, adjusted and polymerized through a curing accelerator and modified, modified graphene is obtained, then the graphene sheets are manufactured through melting and extrusion, the obtained graphene sheets and iron sheets with certain thicknesses are rolled and composited, and the graphene composite metal sheet is manufactured, wherein the two outermost layers of the graphnene composite metal sheet can be one graphene sheet and one metal sheet respectively and can also be metal sheets. The prepared graphene composite metal sheet has the excellent characteristics of high heat conduction performance, low cost, automatic production, energy saving and the like and can be widely used for the field of new energy and various photoelectric elements such as SMD (surface mounted device) electricity-conductive and heat-conductive lead supports, lighting, luminous and non-luminous signal transmission, electricity conduction and heat conduction integrally packaged bases of precise elements, patch supports and the like.

Description

technical field [0001] The invention relates to a graphene composite metal sheet and its preparation method and application, belonging to the technical fields of photoelectric components, new energy and energy saving. Background technique [0002] At present, copper materials are widely used as substrates for package bases and chip mounts such as surface mount devices (SMD), LED lighting, and signal transmission because of their good electrical and thermal conductivity, corrosion resistance, and mechanical properties. However, due to the high cost of copper, people have to start looking for alternative materials for copper, such as iron and high-temperature-resistant ceramic materials. However, in high-end application fields, especially eutectic soldered chips and flip chips, etc., the requirements for electrical conductivity and heat conduction of the base material are relatively high, and the expansion coefficient of the base material is required to be small. Although the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B15/18B32B9/00B32B9/04B32B7/12B32B33/00B32B37/06B32B37/08B32B37/10B32B37/12C08G77/388B29C47/00
CPCB29C48/08B32B7/12B32B9/007B32B9/041B32B15/18B32B33/00B32B37/06B32B37/08B32B37/10B32B37/1284B32B2307/202B32B2307/212B32B2307/302B32B2307/558C08G77/388
Inventor 蔡明波孔作万
Owner 东莞市钜锋电子材料有限公司
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