ULTRA-THIN, PURE FLEXIBLE GRAPHITE

摘要

A process for forming pinhole free ultra-thin flexible sheet material from natural graphite comprising treating low ash natural graphite particles with an oxidizing agent to intercalate the graphite, inducting the particles after they are dried to less than 2% by weight water into a furnace preheated to at least 2000.degree.F to cause rapid expansion to a specific volume of at least 450 cc/gm and compressing the expanded graphite.