• 专利标题:   High fluidity, insulating and thermally conductive silicone grease comprises polysiloxane and modified thermally conductive filler, where preparation of modified thermally conductive filler comprises e.g. processing liquid metal and thermally conductive filler by mechanical grinding.
  • 专利号:   CN113913018-A, CN113913018-B
  • 发明人:   LI Y, DOU Z, XIE Z, FU Q, WU K
  • 专利权人:   UNIV SICHUAN
  • 国际专利分类:   C08K003/08, C08K003/22, C08K003/38, C08K009/10, C08L083/04, C09K005/14
  • 专利详细信息:   CN113913018-A 11 Jan 2022 C08L-083/04 202259 Chinese
  • 申请详细信息:   CN113913018-A CN11451215 30 Nov 2021
  • 优先权号:   CN11451215

▎ 摘  要

NOVELTY - High fluidity, insulating and thermally conductive silicone grease comprises 2-40 pts. wt. polysiloxane, and 60-98 pts. wt. modified thermally conductive filler, where the preparation of modified thermally conductive filler is as follows: processing the liquid metal and thermally conductive filler by mechanical grinding through mechanical shear-induced mechanochemistry, which enables the empty orbitals in the liquid metal to form strong interactions with the lone pair electrons existing on the surface of the inorganic micro-nano material to be anchored on the surface of the inorganic micro-nano material, the f the amount of thermally conductive filler is 90-99.9 pts. wt., and liquid metal is 0.1-10 pts. wt. USE - Used as high fluidity, insulating and thermally conductive silicone grease. ADVANTAGE - The method obtains thermal conductive silicone grease with high fluidity and high thermal conductivity by introducing small amount of liquid metal modified thermal conductive filler into polysiloxane. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) preparing high fluidity, insulating and thermally conductive silicone grease, comprising uniformly stirring and blending the polysiloxane and modified thermally conductive filler; (2) improving the fluidity of polysiloxane, comprising introducing modified thermally conductive filler into the polysiloxane, and mixing, where the amount of polysiloxane is 2-40 pts. wt., and the modified thermally conductive filler is 60-98 pts. wt., the preparation of modified thermally conductive filler is as follows: processing the liquid metal and thermally conductive filler by mechanical grinding through mechanical shear-induced mechanochemistry, so the empty orbitals in the liquid metal forms strong interaction with the lone pair electrons existing on the surface of the inorganic micro-nano material to be anchored on the surface of the inorganic micro-nano material, and the amount of the thermally conductive filler is 90-99.9 pts. wt., and liquid metal is 0.1-10 pts. wt; and (3) simultaneously improving the fluidity and thermal conductivity of polysiloxane, comprising introducing modified thermally conductive filler into polysiloxane, mixing, where the polysiloxane is 2-40 pts. wt., and the modified thermally conductive filler is 60-98 pts. wt., the preparation of the modified thermally conductive filler is as follows: processing the liquid metal and the thermally conductive filler by mechanical grinding through mechanical shear-induced mechanochemistry, which enables the empty orbitals in the liquid metal to form strong interactions with the lone pair electrons existing on the surface of the inorganic micro-nano material to be anchored on the surface of the inorganic micro-nano material, where the amount of thermally conductive filler is 90-99.9 pts. wt., and 0.1-10 pts. wt. liquid metal.