A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Preparation method of graphene/soluble polyimide composite heat-conducting film
The invention discloses a preparation method of a graphene/soluble polyimide composite heat-conducting film, which comprises the following steps: dispersing a graphene oxide filter cake and soluble polyimide in a solvent through high-speed shearing to obtain high-viscosity uniform composite slurry; performing high-pressure homogenization treatment on the high-viscosity uniform composite slurry for multiple times to obtain low-viscosity uniform composite slurry; performing vacuum defoaming treatment on the low-viscosity uniform composite slurry to obtain defoamed composite slurry; coating a base material with the defoamed composite slurry in a blade coating manner to obtain a wet film; drying the wet film, stripping and rolling to obtain a composite film; carrying out high-temperature annealing thermal reduction on the composite film in an argon atmosphere to obtain a composite foam film; and carrying out hot-pressing treatment on the composite foam film to obtain the composite heat-conducting film. Through introduction of soluble polyimide and a subsequent high-temperature annealing thermal reduction process, the in-plane thermal conductivity and the out-plane thermal conductivity of the composite heat-conducting film are remarkably improved.
本发明公开了一种石墨烯/可溶性聚酰亚胺复合导热膜的制备方法，包括如下步骤：将氧化石墨烯滤饼和可溶性聚酰亚胺经过高速剪切分散在溶剂中，得到高粘度的均匀复合浆料；对高粘度的均匀复合浆料进行多次高压均质处理，得到低粘度的均匀复合浆料；对低粘度的均匀复合浆料进行真空脱泡处理，得到脱泡后的复合浆料；将脱泡后的复合浆料通过刮涂的方式涂覆至基材上，得到湿膜；将湿膜干燥后剥离收卷得到复合薄膜；将复合薄膜在氩气气氛下进行高温退火热还原，得到复合泡沫膜；对复合泡沫膜进行热压处理，得到复合导热膜。本发明通过可溶性聚酰亚胺的引入以及随后的高温退火热还原工艺，使得复合导热膜的面内和面外热导率都得到了显著的提高。
Preparation method of graphene/soluble polyimide composite heat-conducting film
The invention discloses a preparation method of a graphene/soluble polyimide composite heat-conducting film, which comprises the following steps: dispersing a graphene oxide filter cake and soluble polyimide in a solvent through high-speed shearing to obtain high-viscosity uniform composite slurry; performing high-pressure homogenization treatment on the high-viscosity uniform composite slurry for multiple times to obtain low-viscosity uniform composite slurry; performing vacuum defoaming treatment on the low-viscosity uniform composite slurry to obtain defoamed composite slurry; coating a base material with the defoamed composite slurry in a blade coating manner to obtain a wet film; drying the wet film, stripping and rolling to obtain a composite film; carrying out high-temperature annealing thermal reduction on the composite film in an argon atmosphere to obtain a composite foam film; and carrying out hot-pressing treatment on the composite foam film to obtain the composite heat-conducting film. Through introduction of soluble polyimide and a subsequent high-temperature annealing thermal reduction process, the in-plane thermal conductivity and the out-plane thermal conductivity of the composite heat-conducting film are remarkably improved.
本发明公开了一种石墨烯/可溶性聚酰亚胺复合导热膜的制备方法，包括如下步骤：将氧化石墨烯滤饼和可溶性聚酰亚胺经过高速剪切分散在溶剂中，得到高粘度的均匀复合浆料；对高粘度的均匀复合浆料进行多次高压均质处理，得到低粘度的均匀复合浆料；对低粘度的均匀复合浆料进行真空脱泡处理，得到脱泡后的复合浆料；将脱泡后的复合浆料通过刮涂的方式涂覆至基材上，得到湿膜；将湿膜干燥后剥离收卷得到复合薄膜；将复合薄膜在氩气气氛下进行高温退火热还原，得到复合泡沫膜；对复合泡沫膜进行热压处理，得到复合导热膜。本发明通过可溶性聚酰亚胺的引入以及随后的高温退火热还原工艺，使得复合导热膜的面内和面外热导率都得到了显著的提高。
Preparation method of graphene/soluble polyimide composite heat-conducting film
一种石墨烯/可溶性聚酰亚胺复合导热膜的制备方法
JIN CHUANG (author) / SONG MENGZHEN (author) / NI JIANGUO (author) / ZHANG JINGJIE (author)
2022-11-08
Patent
Electronic Resource
Chinese
Preparation method of graphene composite heat-conducting film
| European Patent Office | 2022
Graphene composite heat-conducting film and preparation method thereof
| European Patent Office | 2022
Composite graphene heat-conducting film and preparation method thereof
| European Patent Office | 2023
Preparation method of graphene/artificial graphite composite heat-conducting film
| European Patent Office | 2022
Preparation method of graphene heat-conducting thick film
| European Patent Office | 2022