Preparation method of group-regulated high-density graphene heat-conducting film and obtained product

A high-density, graphene technology, applied in the field of graphene, can solve the problems of poor film performance, low density of low-solid slurry, high viscosity of high-solid slurry, etc., to achieve uniform density, large coating density, Excellent surface condition and homogeneous effect

Active Publication Date: 2021-05-14
HAIKE GRP RES INST OF INNOVATION & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The invention provides a method for preparing a group-controlled high-density graphene heat conduction film and the resulting product. The method is based on effectively dispersing the slurry, and by controlling the dispersion uniformity an

Method used

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  • Preparation method of group-regulated high-density graphene heat-conducting film and obtained product

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Example Embodiment

[0033]Example 1

[0034]The preparation method of high-density graphene heat film regulated by the group, including the following steps:

[0035]0.1% hydrochloric acid was added to 10 g of deionized water, and stirring was stirred using a high speed mixer to obtain a first slurry;

[0036]The oxidized graphene filter cake was referred to in 5% first slurry, and the granulated treatment was carried out using a blade pulverizer to be treated into 1 mm particles, then in the above-described first slurry, stirred at 300 rpm for 15 min, and then stirred at 1000 rpm 30 min is stirred at high speed to obtain a hydrophobic high-containing slurry;

[0037]Ultrasonic homogenizing machine is used to use ultrasonic homogeneous machine using ultrasonic homogeneous machine, with a frequency of 20 kHz, a sound intensity of 1 W / cm.2, Obtain a uniformly dispersed second slurry;

[0038]The second slurry was dispersed using a dual planet mixer, and an ammonia water having a mass of 0.1% of the slurry was added th...

Example Embodiment

[0043]Example 2

[0044]The preparation method of high-density graphene heat film regulated by the group, including the following steps:

[0045]10% of hydrochloric acid was added to 10 kg deionized water, and stirring was stirred using a high speed mixer to obtain a first slurry;

[0046]The oxidized graphene filter cake was referred to as 5% first slurry, and the granulated treatment was carried out using a blade pulverizer to be treated into 1 cm particles, and then it was added to the first slurry, and the mixture was stirred at 600 rpm for 5 min, and then stirred at 1500 rpm 15 min is stirred at high speed to obtain a hydrophobic high solid slurry;

[0047]Ultrasonic homogeneous treatment is used for the obtained hydrophobic high-containing slurry to use ultrasonic homogeneous machine, with a frequency of 300 kHz, a sound strength of 20W / cm.2, Obtain a uniformly dispersed second slurry;

[0048]The second slurry was dispersed using a dual planet mixer, and a pulp mass was added thereto, and...

Example Embodiment

[0053]Example 3

[0054]The preparation method of high-density graphene heat film regulated by the group, including the following steps:

[0055]3% hydrochloric acid was added to 1 kg deionized water, and stirring was stirred using a high-speed mixer to obtain a first slurry;

[0056]The oxidized graphene filter cake was referred to as 3% first slurry solid content, and the granulened treatment was carried out using a blade pulverizer to form a 4 mm particles, and then the first slurry was added, stirred at 400 rpm for 8 min, and then stirred at 1200 rpm 20min is stirred at high speed to obtain a hydrophobic high-containing slurry;

[0057]Ultrasonic homogenizing machine is used to use ultrasonic homogeneous machine using ultrasonic homogeneous machine, frequency is 100 kHz, and the sound is 10W / cm2, Obtain a uniformly dispersed second slurry;

[0058]The second slurry was dispersed using a dual planet mixer, and an ammonia water of the slurry mass was added thereto, and the viscosity of the slu...

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Abstract

The invention provides a preparation method of a group-regulated high-density graphene heat-conducting film and an obtained product, and belongs to the technical field of graphene. The method provided by the invention is based on a time separation principle (research and development of a TRIZ theory), and adopts a two-stage treatment method for treatment, namely performing group treatment on graphene oxide by using a group binder, completing effective dispersion of slurry, and performing group repair by using a modifier; the high-solid-content slurry can be prepared while the dispersion uniformity and viscosity applicability of the slurry are controlled, and the problems that the high-solid-content slurry is high in viscosity and difficult to treat, the low-solid-content slurry is low in density, and the performance of a finished product film is poor are effectively solved.

Description

technical field [0001] The invention belongs to the technical field of graphene, and in particular relates to a method for preparing a group-controlled high-density graphene heat conduction film and a product obtained therefrom. Background technique [0002] With the multi-functionalization and miniaturization of digital devices, how to maintain the normal high-load use of the devices and efficiently dissipate heat and reduce consumption has become a hot research issue. Heat dissipation products generally have two types: passive heat dissipation and active heat dissipation. Graphene heat conduction film is a new passive heat dissipation product that has emerged in recent years. Its theoretical thermal conductivity reaches 5,300W / m K, which is the material with the highest thermal conductivity known. Due to the rapid thermal conductivity and rapid heat dissipation of graphene , making it a hot spot in the current research on heat dissipation materials. [0003] In terms of ...

Claims

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Application Information

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IPC IPC(8): C01B32/184C01B32/198C01B32/194
CPCC01B2204/24C01B32/184C01B32/194C01B32/198
Inventor 崔云龙张聪陈忠洲苗力孝丁建涛张琪张善如于鑫
Owner HAIKE GRP RES INST OF INNOVATION & TECH
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