Method for preparing graphene base membrane product

A technology of olefin-based film and graphene, which is applied in the field of graphene, can solve the problems of insufficient thermal conductivity and limited cooling range, and achieve the effect of increased density, increased density, and excellent water resistance

Active Publication Date: 2016-11-30
成都市科愿科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The heat conduction film prepared by the traditional graphene heat conduction film preparation process is not excellent enough in thermal conductivity, and the cooling range is limited

Method used

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  • Method for preparing graphene base membrane product

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Effect test

Embodiment 1

[0032] A preparation method for a graphene-based film product, comprising the following steps:

[0033] (1) Preparation of slurry: Add water-soluble graphene with a mass ratio of 30:200:40, thermal conductivity additives and bonding additives in a ball milling tank with a weight of 0.5 kg of ball milling beads in advance, and then dropwise add The binder is then added with a solvent for ball milling. The ball milling time is 1 hour. After ball milling, the slurry is taken out and stirred to remove air bubbles. The stirring speed is 100 rpm for 12 hours. Wherein, the mass ratio of ball milling beads with different particle sizes is: 1mm particle size ball milling beads: 5mm particle size ball milling beads: 10mm particle size ball milling beads = 1: 1: 1; the heat conduction aid is nano ceramic particles; the bonding The auxiliary agent is cellulose; the binder is polyurethane resin; the solvent is water; according to mass ratio, binder: bonding aid=1:3; according to mass-volum...

Embodiment 2

[0036] A preparation method for a graphene-based film product, comprising the following steps:

[0037] (1) Preparation of slurry: Add water-soluble graphene with a mass ratio of 60:500:120, thermal conductivity additives and bonding additives in a ball milling tank with a weight of 5 kg of ball milling beads, and then add viscose Then add a solvent and perform ball milling. The ball milling time is 36h. After the ball milling, take out the slurry and stir to remove air bubbles. It is ready for use. The stirring speed is 3000rpm and the time is 0.1h. Wherein, the mass ratio of ball milling beads with different particle sizes is: 1mm particle size ball milling beads: 5mm particle size ball milling beads: 10mm particle size ball milling beads = 20: 10: 8; the heat conduction aid is nano-zinc oxide; The auxiliary agent is polyvinyl alcohol; the binder is styrene-butadiene resin; the solvent is ethanol; according to mass ratio, binder: bonding aid=10:80; according to mass-volume r...

Embodiment 3

[0040] A preparation method for a graphene-based film product, comprising the following steps:

[0041] (1) Preparation of slurry: Add water-soluble graphene with a mass ratio of 50:300:100, heat conduction aid and bonding aid in a ball milling tank with a weight of 4 kg in advance, and then add viscose Then add solvent and perform ball milling. The ball milling time is 18 hours. After the ball milling, the slurry is taken out and stirred to remove air bubbles. The stirring speed is 2000rpm and the time is 6 hours. Wherein, the mass ratio of ball milling beads with different particle sizes is: 1mm particle size ball milling beads: 5mm particle size ball milling beads: 10mm particle size ball milling beads = 10: 5: 4; the heat conduction aid is carbon black; the bonding aid The agent is fumed silica; the binder is styrene-butadiene resin; the solvent is a polyhydric alcohol; according to mass ratio, binder: bonding aid=5: 40; according to mass-volume ratio, the mass of graphene...

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Abstract

The invention discloses a method for preparing a graphene base membrane product. The method comprises the following steps: (1) preparing slurry; (2) coating the slurry in a magnetic field. The invention provides the method for preparing the graphene base membrane product, and a high-efficiency heat-conduction graphene heat-conduction membrane can be prepared by using the method. The graphene base membrane product prepared by using the method is prepared by preparing slurry from specific graphene, a heat-conductive additive, an adhesion additive, a binding agent and a solvent, and by coating and drying the slurry under the action of the magnetic field. Compared with a graphene heat-conduction membrane prepared by using a conventional method, the graphene base membrane product prepared by using the method is good in heat conduction property, and the cooling amplitude is about 4.9 DEG C. After the slurry is coated and dried under the action of the magnetic field, the density of a membrane layer of a membrane product prepared by using the method is improved, that is, the density is improved by about 30-50%. The heat-conduction membrane prepared by using the method is good in binding force, not easy to drop off and excellent in water resistance. The method disclosed by the invention is simple in process step, easy to operate and achieve, gentle in preparation condition and easy to control.

Description

technical field [0001] The invention relates to a preparation method of a graphene-based film product, and specifically belongs to the technical field of graphene. Background technique [0002] Graphene is the thinnest and hardest nano-material known in the world. It is almost completely transparent and only absorbs 2.3% of light; its thermal conductivity is as high as 5300W / m K, which is higher than that of carbon nanotubes and diamonds. Electron mobility over 15000cm 2 / V·s, which is higher than that of carbon nanotubes or silicon crystals, and the resistivity is only about 10 -6 Ω·cm, lower than copper or silver, is the material with the smallest resistivity in the world. Because of its extremely low resistivity and extremely fast electron migration, it is expected to be used to develop a new generation of electronic components or transistors that are thinner and conduct electricity faster. Since graphene is essentially a transparent and good conductor, it is also suit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/14
CPCC09K5/14
Inventor 高慧俐涂铭旌陈锐强
Owner 成都市科愿科技有限公司
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