Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of graphene/carbon fiber composite film
The invention relates to a preparation method of a graphene/carbon fiber composite film, which comprises the following steps: dispersing graphite oxide in deionized water to prepare graphene oxide slurry; adding 1 part of high-thermal-conductivity carbon fiber powder into 20 parts of concentrated sulfuric acid for acidification, washing and drying to obtain acidified fiber powder; adding high-thermal-conductivity carbon fiber powder accounting for 5% of the content of the graphene oxide into a slurry, and mixing to obtain a graphene oxide/carbon fiber composite slurry; coating the composite slurry to form a film with the coating thickness of 2-10mm, and drying to form the film to obtain a graphene oxide/carbon fiber composite film; heating the composite film to 1500 DEG C at the rate of 5 DEG C/min, preserving heat to complete carbonization, then heating to 2850 DEG C at the temperature of 20 DEG C/min, preserving heat to complete graphitization, and obtaining a graphene film; pressing the graphene film flatly under the pressure intensity of 100 mpa, compacting until the density reaches 1.6-2.0 g/cm < 3 > to obtain the high-thermal-conductivity graphene/carbon fiber composite heat dissipation film.
本发明一种石墨烯/碳纤维复合膜的制备方法，将氧化石墨加入去离子水中分散，配成氧化石墨烯浆料；将1份高导热碳纤维粉体加入20份浓硫酸中进行酸化，洗涤干燥处理得到酸化后的纤维粉体；将占氧化石墨烯含量5％的高导热碳纤维粉体加入浆料中，混合得到氧化石墨烯/碳纤维的复合浆料；复合浆料涂布成膜，涂布厚度为2‑10mm，干燥成膜后得到氧化石墨烯/碳纤维的复合膜；复合膜在以5℃/min的速率升温至1500℃，保温完成碳化，然后以20℃/min的温度升温至2850℃，保温完成石墨化，得到石墨烯膜；将石墨烯膜在100mpa压强下平压，压实至密度达到1.6‑2.0g/cm3，得到高导热石墨烯/碳纤维复合散热膜。
Preparation method of graphene/carbon fiber composite film
The invention relates to a preparation method of a graphene/carbon fiber composite film, which comprises the following steps: dispersing graphite oxide in deionized water to prepare graphene oxide slurry; adding 1 part of high-thermal-conductivity carbon fiber powder into 20 parts of concentrated sulfuric acid for acidification, washing and drying to obtain acidified fiber powder; adding high-thermal-conductivity carbon fiber powder accounting for 5% of the content of the graphene oxide into a slurry, and mixing to obtain a graphene oxide/carbon fiber composite slurry; coating the composite slurry to form a film with the coating thickness of 2-10mm, and drying to form the film to obtain a graphene oxide/carbon fiber composite film; heating the composite film to 1500 DEG C at the rate of 5 DEG C/min, preserving heat to complete carbonization, then heating to 2850 DEG C at the temperature of 20 DEG C/min, preserving heat to complete graphitization, and obtaining a graphene film; pressing the graphene film flatly under the pressure intensity of 100 mpa, compacting until the density reaches 1.6-2.0 g/cm < 3 > to obtain the high-thermal-conductivity graphene/carbon fiber composite heat dissipation film.
本发明一种石墨烯/碳纤维复合膜的制备方法，将氧化石墨加入去离子水中分散，配成氧化石墨烯浆料；将1份高导热碳纤维粉体加入20份浓硫酸中进行酸化，洗涤干燥处理得到酸化后的纤维粉体；将占氧化石墨烯含量5％的高导热碳纤维粉体加入浆料中，混合得到氧化石墨烯/碳纤维的复合浆料；复合浆料涂布成膜，涂布厚度为2‑10mm，干燥成膜后得到氧化石墨烯/碳纤维的复合膜；复合膜在以5℃/min的速率升温至1500℃，保温完成碳化，然后以20℃/min的温度升温至2850℃，保温完成石墨化，得到石墨烯膜；将石墨烯膜在100mpa压强下平压，压实至密度达到1.6‑2.0g/cm3，得到高导热石墨烯/碳纤维复合散热膜。
Preparation method of graphene/carbon fiber composite film
一种石墨烯/碳纤维复合膜的制备方法
ZHAO LIPING (Autor:in) / MA ZHIYUAN (Autor:in) / LI XING (Autor:in) / JIN MIN (Autor:in)
04.06.2021
Patent
Elektronische Ressource
Chinesisch
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