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METHOD OF PRODUCING INTERCALATED GRAPHITE, INTERCALATED GRAPHITE AND FLEXIBLE GRAPHITE SHEET

机译:制备插层石墨,插层石墨和柔性石墨板的方法

摘要

FIELD: chemistry.;SUBSTANCE: invention relates to production of intercalated graphite and production of products based on said graphite - cellular graphite and flexible graphite sheets (foil) with high thermal stability in the medium of an oxidising agent (air) and can be used in production of fire-protective and sealing products, heat insulating articles and lining elements of furnaces. The method of producing intercalated graphite involves reaction of graphite particles with concentrated sulphuric acid in the presence of an oxidising agent with addition of boric acid in weight ratio sulphuric acid to boric acid equal to (2-12):1 to obtain intercalated graphite compounds, followed by hydrolysis of the obtained intercalated graphite compounds to form intercalated graphite and then drying. The obtained intercalated graphite contains graphite particles, the surface of which is uniformly coated with boric acid crystals, wherein the intercalated graphite contains up to 1.5 wt % boron.;EFFECT: obtaining intercalated graphite and graphite foil based on said graphite with improved anti-oxidative properties using a simple, efficient and cheap method.;4 cl, 3 tbl, 2 dwg
机译:技术领域本发明涉及插层石墨的生产以及基于所述石墨的产品-在氧化剂(空气)的介质中具有高热稳定性的多孔石墨和柔性石墨片(箔)的产品,并且可以使用生产防火和密封产品,隔热制品和炉衬。制备插层石墨的方法包括在氧化剂存在下,使石墨颗粒与浓硫酸反应,并加入硫酸与硼酸的重量比为(2-12):1的硼酸,以获得插层石墨化合物,然后将获得的插层石墨化合物水解以形成插层石墨,然后干燥。所获得的插层石墨包含石墨颗粒,该石墨颗粒的表面均匀地涂覆有硼酸晶体,其中该插层石墨包含至多1.5 wt%的硼。效果:获得具有改善的抗氧化性的插层石墨和基于所述石墨的石墨箔使用一种简单,高效且便宜的方法来获得最佳性能。; 4 cl,3 tbl,2 dwg

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