• 专利标题:   METHOD FOR OBTAINING GRAPHENE-CONTAINING SUSPENSIONS BY GRAPHITE EXFOLIATION.
  • 专利号:   RU2793553-C1
  • 发明人:   DMITRI I A, VASIN S A, EVSEEV A V
  • 专利权人:   UNIV TULA STATE
  • 国际专利分类:   B82Y040/00, C01B032/19
  • 专利详细信息:   RU2793553-C1 04 Apr 2023 C01B-032/19 202341 Pages: 0 Russian
  • 申请详细信息:   RU2793553-C1 RU116482 17 Jun 2022
  • 优先权号:   RU116482

▎ 摘  要

NOVELTY - Invention relates to the preparation of graphene-containing suspensions used in the modification of composite materials with graphene: oils, lubricants, concretes. The method for obtaining graphene-containing suspensions by graphite exfoliation includes preparing a mixture of crystalline graphite with a liquid, obtaining an initial graphite-containing suspension, supplying an initial graphite-containing suspension to an exfoliation device, exfoliating graphite, withdrawing a graphene-containing suspension from an exfoliation device using a pump. The preparation of a mixture of crystalline graphite is carried out with the addition of natural lye as a liquid. Exfoliation of the graphite-containing suspension is carried out in multiple cycles using a graphite mechanical exfoliation module, including a buffer tank, one rotary-conical exfoliation device with a rotation speed of the working bodies of 6240 rpm, a mechanical filter and a pump. USE - Preparation of graphene-containing suspensions. ADVANTAGE - Invention makes it possible to increase the efficiency of graphite exfoliation, the output of few-layer graphene, to reduce the harmfulness and danger of its production. 1 cl, 1 dwg