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Preparation method of polyimide graphite film
The invention discloses a preparation method of a polyimide graphite film, which comprises the following steps: chopping plant fibers, carrying out micro-carbonization pretreatment, conducting dispersing in an organic solvent, adding diamine and dianhydride, carrying out in-situ polymerization reaction to obtain a polyamide acid solution containing micro-carbonized plant fibers, and carrying out imidization treatment to obtain a polyimide film containing the micro-carbonized plant fibers, and conducting carbonization and graphitization to obtain the polyimide graphite film. According to the preparation method, the micro-carbonized plant fibers are directly added into a polyimide synthesis system as an in-situ polymerization reaction carrier, and the polyimide graphite film containing the carbon nanotubes is prepared through direct graphitization, so that the performance of the graphite film can be improved, and the production cost of the graphite film is greatly reduced; and the greenand low-cost new method is provided for producing the high-performance graphite film.
本发明公开了一种聚酰亚胺石墨膜的制备方法，先将植物纤维短切，通过微碳化预处理后分散于有机溶剂中，然后后加入二胺和二酐进行原位聚合反应，得到含微碳化植物纤维的聚酰胺酸溶液，再进行亚胺化处理，得到含微碳化植物纤维的聚酰亚胺薄膜，最后经过碳化、石墨化得到聚酰亚胺石墨膜。本发明将微碳化植物纤维作为原位聚合反应载体直接加入聚酰亚胺合成体系中，通过直接石墨化制得含碳纳米管的聚酰亚胺石墨膜，不仅能提升石墨膜的性能，而且大大降低了石墨膜的生产成本，为生产高性能石墨膜提供了绿色、低成本的新方法。
Preparation method of polyimide graphite film
The invention discloses a preparation method of a polyimide graphite film, which comprises the following steps: chopping plant fibers, carrying out micro-carbonization pretreatment, conducting dispersing in an organic solvent, adding diamine and dianhydride, carrying out in-situ polymerization reaction to obtain a polyamide acid solution containing micro-carbonized plant fibers, and carrying out imidization treatment to obtain a polyimide film containing the micro-carbonized plant fibers, and conducting carbonization and graphitization to obtain the polyimide graphite film. According to the preparation method, the micro-carbonized plant fibers are directly added into a polyimide synthesis system as an in-situ polymerization reaction carrier, and the polyimide graphite film containing the carbon nanotubes is prepared through direct graphitization, so that the performance of the graphite film can be improved, and the production cost of the graphite film is greatly reduced; and the greenand low-cost new method is provided for producing the high-performance graphite film.
本发明公开了一种聚酰亚胺石墨膜的制备方法，先将植物纤维短切，通过微碳化预处理后分散于有机溶剂中，然后后加入二胺和二酐进行原位聚合反应，得到含微碳化植物纤维的聚酰胺酸溶液，再进行亚胺化处理，得到含微碳化植物纤维的聚酰亚胺薄膜，最后经过碳化、石墨化得到聚酰亚胺石墨膜。本发明将微碳化植物纤维作为原位聚合反应载体直接加入聚酰亚胺合成体系中，通过直接石墨化制得含碳纳米管的聚酰亚胺石墨膜，不仅能提升石墨膜的性能，而且大大降低了石墨膜的生产成本，为生产高性能石墨膜提供了绿色、低成本的新方法。
Preparation method of polyimide graphite film
一种聚酰亚胺石墨膜的制备方法
SUN SHANWEI (author) / MAO YONG (author) / TANG WEI (author) / PAN CHENG (author)
2021-01-26
Patent
Electronic Resource
Chinese
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