• 专利标题:   Modified graphene composite material used in cement, comprises nano-silicon dioxide loaded on surface of crosslinked modified graphene framework, prepared by hydrolyzing graphene oxide and silicate ester in solvent, carrying out crosslinking reaction and loading graphene oxide with silicon dioxide.
  • 专利号:   CN113896453-A, CN113896453-B
  • 发明人:   WANG X, WANG G, LI J, LUO G, LI Y, GUO J, LIANG J
  • 专利权人:   BEIJING GRAPHENE TECHNOLOGY RES INST CO
  • 国际专利分类:   C04B024/42, C04B028/04
  • 专利详细信息:   CN113896453-A 07 Jan 2022 C04B-024/42 202238 Chinese
  • 申请详细信息:   CN113896453-A CN11253183 27 Oct 2021
  • 优先权号:   CN11253183

▎ 摘  要

NOVELTY - Modified graphene composite material comprises a nano-silicon dioxide loaded on surface of crosslinked modified graphene framework, where the crosslinked modified graphene framework has cross-linked structure formed by polycarboxylic acid water reducing agent and graphene oxide. USE - The modified graphene composite material is useful in cement. ADVANTAGE - The material can improve the strength, fluidity and stability of cement. DETAILED DESCRIPTION - INDEPENDENT CLAIMs are also included for: (1) Preparing modified graphene composite material comprising hydrolyzing graphene oxide and silicate ester in aqueous solvent to obtain graphene oxide loaded with nano silicon dioxide, carrying out crosslinking reaction to the graphene oxide loaded with nano silicon dioxide and polycarboxylic acid water reducing agent, and loading graphene oxide with silicon dioxide and the polycarboxylic acid water reducing agent form a crosslinked structure to obtain the modified graphene composite material. (2) Cement reinforcing agent comprising modified graphene composite material. (3) Cement comprising cement base material and cement reinforcing agent. (4) Concrete comprising aggregate and cement.