• 专利标题:   Preparing silanized graphene useful in polymer composite materials comprises mixing aminosilane coupling agent and graphene oxide to obtain first dispersion liquid, mixing AGO and tetraethyl orthosilicate, adjusting pH, and reacting.
  • 专利号:   CN112480684-A, CN112480684-B
  • 发明人:   YAN L, SHAO J
  • 专利权人:   UNIV CHINA SCI TECHNOLOGY
  • 国际专利分类:   C08K003/04, C08K005/14, C08K009/06, C08L083/04, C08L083/07
  • 专利详细信息:   CN112480684-A 12 Mar 2021 C08L-083/07 202130 Pages: 15 Chinese
  • 申请详细信息:   CN112480684-A CN11391568 01 Dec 2020
  • 优先权号:   CN11391568

▎ 摘  要

NOVELTY - Preparing silanized graphene comprises mixing aminosilane coupling agent and graphene oxide to obtain first dispersion liquid, reacting to obtain self-assembled monolayer molecule modified AGO, then mixing AGO and tetraethyl orthosilicate to obtain second dispersion liquid, adjusting the pH of the second dispersion liquid to alkaline, and reacting. USE - The silanized graphene or silanized graphene/silicone rubber composite material is useful in polymer composite materials (claimed). ADVANTAGE - The method: weakens the interaction force between graphene sheets; is prone to agglomeration, which further enhances the compatibility between graphene and silicone rubber; and can be evenly dispersed in the silicone rubber matrix to achieve the reinforcement of the silicone rubber. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) silanized graphene prepared by the above method; (2) silanized graphene/silicone rubber composite material comprising silanized graphene; and (3) preparing the silanized graphene/silicone rubber composite material comprising mixing silanized graphene and silicone rubber, adding hydroxy silicone oil for the second banbury, then adding vulcanizing agent for third banbury, and vulcanizing.