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Preparation method of graphene/artificial graphite composite heat-conducting film
The invention belongs to the field of preparation of heat conduction and heat dissipation materials, and particularly relates to a preparation method of a graphene/artificial graphite composite heat conduction film. The preparation method comprises the following steps: alternately stacking a graphene oxide film and a polyimide film into a block, controlling the temperature of the graphene oxide film and the polyimide film, applying a preset pressure in a direction perpendicular to the graphene oxide film and the polyimide film, and carrying out temperature programming and pressure programming in a protective atmosphere, the graphene oxide film is reduced and graphitized into a reduced graphene film, the polyimide film is carbonized and graphitized into an artificial graphite film, and the reduced graphene film and the artificial graphite film are compounded and compacted, so that the high-density graphene/artificial graphite composite heat-conducting film is obtained. The method can economically, efficiently and quickly prepare the heat-conducting film with high density, smooth surface and high plane heat conductivity, and can be widely applied to the field of heat-conducting and heat-dissipating materials.
本发明属于导热和散热材料制备领域，具体为一种石墨烯/人工石墨复合导热膜的制备方法。将氧化石墨烯膜与聚酰亚胺膜交替堆叠成块体，控制氧化石墨烯膜和聚酰亚胺膜温度，在垂直于氧化石墨烯膜和聚酰亚胺膜方向施加预定压力，在保护气氛中通过程序温度和程序压力，完成将氧化石墨烯膜还原和石墨化为还原石墨烯膜、将聚酰亚胺膜碳化和石墨化为人工石墨膜、将还原石墨烯膜和人工石墨膜复合密实的过程，获得高密度石墨烯/人工石墨复合导热膜。该方法可经济、高效、快速制备出密度高、表面光滑、平面热导率高的导热膜，可广泛应用于导热和散热材料领域。
Preparation method of graphene/artificial graphite composite heat-conducting film
The invention belongs to the field of preparation of heat conduction and heat dissipation materials, and particularly relates to a preparation method of a graphene/artificial graphite composite heat conduction film. The preparation method comprises the following steps: alternately stacking a graphene oxide film and a polyimide film into a block, controlling the temperature of the graphene oxide film and the polyimide film, applying a preset pressure in a direction perpendicular to the graphene oxide film and the polyimide film, and carrying out temperature programming and pressure programming in a protective atmosphere, the graphene oxide film is reduced and graphitized into a reduced graphene film, the polyimide film is carbonized and graphitized into an artificial graphite film, and the reduced graphene film and the artificial graphite film are compounded and compacted, so that the high-density graphene/artificial graphite composite heat-conducting film is obtained. The method can economically, efficiently and quickly prepare the heat-conducting film with high density, smooth surface and high plane heat conductivity, and can be widely applied to the field of heat-conducting and heat-dissipating materials.
本发明属于导热和散热材料制备领域，具体为一种石墨烯/人工石墨复合导热膜的制备方法。将氧化石墨烯膜与聚酰亚胺膜交替堆叠成块体，控制氧化石墨烯膜和聚酰亚胺膜温度，在垂直于氧化石墨烯膜和聚酰亚胺膜方向施加预定压力，在保护气氛中通过程序温度和程序压力，完成将氧化石墨烯膜还原和石墨化为还原石墨烯膜、将聚酰亚胺膜碳化和石墨化为人工石墨膜、将还原石墨烯膜和人工石墨膜复合密实的过程，获得高密度石墨烯/人工石墨复合导热膜。该方法可经济、高效、快速制备出密度高、表面光滑、平面热导率高的导热膜，可广泛应用于导热和散热材料领域。
Preparation method of graphene/artificial graphite composite heat-conducting film
一种石墨烯/人工石墨复合导热膜的制备方法
WANG GUANZHOU (author) / HUANG KUN (author) / WEI TANWEI (author) / CHENG HUIMING (author) / LIU YONGSHENG (author)
2022-12-23
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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