Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of high-thermal-conductivity graphene plate
The invention relates to a preparation method of a high-thermal-conductivity graphene plate, which comprises the following steps of: S1, dissolving graphene oxide powder in aqueous carbon nanotube slurry with a certain concentration to obtain slurry in which the concentration of graphene oxide is 2-12%, the content of carbon nanotubes is 0.1-1% and the content of short carbon fibers is 0.1-2%; S2, adding 0.2-1% of a reducing agent; S3, fully stirring the slurry in a vacuum stirrer, and always controlling the temperature of the slurry to be 25 DEG C or below through water cooling; and S4, carrying out bubble elimination, molding, drying, high-temperature heat treatment graphitization, compaction and machining on the stirred composite slurry to obtain the graphene-based composite fuel cell bipolar plate with the thickness of 0.3-5mm and the thermal conductivity of more than 500W/(mK).
本发明一种高导热石墨烯板的制备方法，步骤S1，将氧化石墨烯粉体溶于一定浓度的水性碳纳米管浆料，配成浓度氧化石墨烯为2‑12％，碳纳米管含量为0.1‑1％，短切碳纤维含量为0.1‑2％的浆料；步骤S2，加入0.2‑1％的还原剂；步骤S3，将上述浆料在真空搅拌器中充分搅拌，并且通过水冷始终控制浆料温度在25℃以下；步骤S4，将搅拌好的复合浆料通过消除气泡、成型、干燥、高温热处理石墨化、压实、机加工的步骤，制备得到厚度0.3‑5mm，热导率500W/(mK)以上的石墨烯基复合燃料电池双极板。
Preparation method of high-thermal-conductivity graphene plate
The invention relates to a preparation method of a high-thermal-conductivity graphene plate, which comprises the following steps of: S1, dissolving graphene oxide powder in aqueous carbon nanotube slurry with a certain concentration to obtain slurry in which the concentration of graphene oxide is 2-12%, the content of carbon nanotubes is 0.1-1% and the content of short carbon fibers is 0.1-2%; S2, adding 0.2-1% of a reducing agent; S3, fully stirring the slurry in a vacuum stirrer, and always controlling the temperature of the slurry to be 25 DEG C or below through water cooling; and S4, carrying out bubble elimination, molding, drying, high-temperature heat treatment graphitization, compaction and machining on the stirred composite slurry to obtain the graphene-based composite fuel cell bipolar plate with the thickness of 0.3-5mm and the thermal conductivity of more than 500W/(mK).
本发明一种高导热石墨烯板的制备方法，步骤S1，将氧化石墨烯粉体溶于一定浓度的水性碳纳米管浆料，配成浓度氧化石墨烯为2‑12％，碳纳米管含量为0.1‑1％，短切碳纤维含量为0.1‑2％的浆料；步骤S2，加入0.2‑1％的还原剂；步骤S3，将上述浆料在真空搅拌器中充分搅拌，并且通过水冷始终控制浆料温度在25℃以下；步骤S4，将搅拌好的复合浆料通过消除气泡、成型、干燥、高温热处理石墨化、压实、机加工的步骤，制备得到厚度0.3‑5mm，热导率500W/(mK)以上的石墨烯基复合燃料电池双极板。
Preparation method of high-thermal-conductivity graphene plate
一种高导热石墨烯板的制备方法
ZHAO LIPING (Autor:in) / MA ZHIYUAN (Autor:in) / LI XING (Autor:in) / JIN MIN (Autor:in)
23.07.2021
Patent
Elektronische Ressource
Chinesisch
High-thermal-conductivity graphene heat expansion plate and preparation method thereof
| Europäisches Patentamt | 2023
High-thermal-conductivity graphene composite film and preparation method thereof
| Europäisches Patentamt | 2023
Preparation method of high-conductivity graphene film
| Europäisches Patentamt | 2021
High-thermal-conductivity graphene composite heat dissipation film and preparation method thereof
| Europäisches Patentamt | 2021
Preparation method of graphene film with ultrahigh thermal conductivity
| Europäisches Patentamt | 2021