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Modified graphene nano-material as well as preparation method and application thereof

A nanomaterial, graphene technology, applied in the direction of nanotechnology, nanotechnology, heat exchange materials, etc., can solve the influence of graphene heat conduction and heat dissipation effect, influence the use of graphene materials, nanomaterials electrical conductivity, photothermal conversion efficiency and biological Insufficient compatibility and other problems to achieve the effect of improving electrical conductivity

Pending Publication Date: 2021-03-23
苏州恩多科石墨烯科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The prior art has the following deficiencies: Although graphene and polymer nanomaterials have excellent various properties, after the graphene heat conduction and heat dissipation structural path is destroyed, it will have a great impact on the heat conduction and heat dissipation effect of graphene, which will affect the use of graphene materials. , and existing nanomaterials have deficiencies in electrical conductivity, light-to-heat conversion efficiency, and biocompatibility

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A kind of preparation method of modified graphene nano material is characterized in that, comprises the steps:

[0031] Step 1: Catalyst promoter, magnesium oxide and deionized water complex reaction to obtain a slurry, the slurry is spray granulated and dried and roasted to obtain a particle size of 20 μm, a specific surface area of ​​60 m2 / g rich in active substances The magnesia carrier, the catalytic promoter and magnesia are 1:3 in parts by weight, drop into the stirring reactor filled with deionized water, the ratio of parts by weight of solid to liquid is: 1:10, at normal temperature The temperature was raised to 80°C, and the constant temperature complexation reaction was carried out for 5 hours;

[0032] Step 2: Put graphite powder and deionized water in a reaction kettle according to a certain ratio, process at 1200W ultrasonic power for 30min, and centrifuge at 8000rpm for 10min, filter to remove the precipitate, and obtain graphite dispersion;

[0033] Step...

Embodiment 2

[0038] A kind of preparation method of modified graphene nano material is characterized in that, comprises the steps:

[0039] Step 1: Catalyst promoter, magnesium oxide and deionized water complex reaction to obtain slurry, the slurry is spray granulated and dried and roasted to obtain active substances with a particle size of 30 μm and a specific surface area of ​​100 ㎡ / g The magnesia carrier, the catalytic promoter and magnesia are 1:5 in parts by weight, drop into the stirred reactor filled with deionized water, the ratio of parts by weight of solid to liquid is: 1:20, at normal temperature The temperature was raised to 100°C, and the constant temperature complexation reaction was carried out for 8 hours;

[0040] Step 2: Put the graphite powder and deionized water in the reaction kettle according to a certain ratio, process it under the ultrasonic power of 1200W for 40min, and centrifuge it at the speed of 10000rpm for 10min, then filter to remove the precipitate, and obt...

Embodiment 3

[0046] A kind of preparation method of modified graphene nano material is characterized in that, comprises the steps:

[0047] Step 1: Catalyst promoter, magnesium oxide and deionized water complex reaction to obtain slurry, the slurry is spray granulated, dried and roasted to obtain active substance-rich with a particle size of 35 μm and a specific surface area of ​​130 ㎡ / g The magnesia carrier, the catalytic promoter and magnesia are 1:3.5 in parts by weight, drop into the stirring reactor filled with deionized water, the ratio of parts by weight of solid to liquid is: 1:20, at normal temperature The temperature was raised to 100°C, and the constant temperature complexation reaction was carried out for 7 hours;

[0048] Step 2: Put graphite powder and deionized water in a reaction kettle according to a certain ratio, process at 1200W ultrasonic power for 30min, and centrifuge at 8000rpm for 10min, filter to remove the precipitate, and obtain graphite dispersion;

[0049] St...

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Abstract

An embodiment of the invention discloses a modified graphene nano-material and a preparation method thereof. The modified graphene nano-material is prepared from the following raw materials in parts by weight: 15-18 parts of graphite powder, 25-35 parts of deionized water, 15-25 parts of polysorbate, 1-5 parts of a catalytic additive, 1-5 parts of magnesium oxide, 10-15 parts of an aqueousmolybdenum pentachloride solution, 5-10 parts of an aqueouscopper chloride solution, 10-15 parts of an aqueous potassium chloride solution, 1-3 parts of modified calcium carbonate powder, 1-5 parts of modified bauxite and 10-15 parts of sodium N-dodecylbenzene sulfonate. According to the invention, the heat dissipation material for providing a high heat conduction and heat dissipation effect for a microelectronic device is obtained.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of graphene nanomaterials, in particular to a modified graphene nanomaterial and its preparation method and application. Background technique [0002] With the rapid development of miniaturization and multi-function of electronic components, the assembly density of components is getting higher and higher, and the unit calorific value is rising rapidly. The electronics industry urgently needs materials with high thermal conductivity and low dielectric constant. As a functional material with strong application prospects, high thermal conductivity materials can play an important role in many manufacturing and high-tech fields such as microelectronics, aerospace, military equipment, semiconductor lighting, electrical appliances, etc. . [0003] Graphene has a unique two-dimensional structure, showing ultra-high thermal conductivity. Single-layer graphene is an atomic-sized network fo...

Claims

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Application Information

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IPC IPC(8): C09K5/14H01L23/373H05K7/20B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00C09K5/14H01L23/3737H05K7/2039
Inventor 黄镇江
Owner 苏州恩多科石墨烯科技有限公司
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