• 专利标题:   Manufacture of silicone rubber interface material for electronic product, involves adding surfactant to toluene, adding graphene, ultrasonic processing, adding filler and silicone rubber, adding silicone oil and catalyst, and molding.
  • 专利号:   CN103436027-A, CN103436027-B
  • 发明人:   FENG Y, LIU L, LU Y, WANG X, ZHANG J, ZHANG L
  • 专利权人:   UNIV BEIJING CHEM TECHNOLOGY, BEIJING BEIHUAXINXIANG SPECIAL MATERIAL TECHNOLOGY PTY CO LT, BEIJING BEIHUAXINXIANG SPECIAL MATERIAL
  • 国际专利分类:   C08K003/04, C08K007/18, C08K009/04, C08L083/04
  • 专利详细信息:   CN103436027-A 11 Dec 2013 C08L-083/04 201430 Chinese
  • 申请详细信息:   CN103436027-A CN10406773 09 Sep 2013
  • 优先权号:   CN10406773

▎ 摘  要

NOVELTY - Surfactant is added to toluene and graphene powder is added. The solution is processed using ultrasonic crushing instrument and graphene is dispersed to obtain graphene dispersion liquid. Alumina filler is added, liquid silicone rubber adhesive is mixed, dried and separated into component (A) and component (B). Hydrogen-having silicone oil and inhibitor are added to component (A). Molybdenum catalyst and inhibitor are added into component (B). Components (A),(B) are uniformly mixed and molded to obtain thermally-conductive electrically insulating silicone rubber interface material. USE - Manufacture of thermally-conductive electrically insulating thermally radiating silicone rubber interface material for electronic product. ADVANTAGE - The silicone rubber interface material is manufactured with high thermal conductivity and hardness. DETAILED DESCRIPTION - Surfactant is added to toluene to form 10-50 mg/ml solution. 0.5-2 Pts. wt. graphene powder is added to the solution. The mass ratio of graphene powder (g) and toluene solution (ml) of surfactant is 1:500. The solution is processed using ultrasonic crushing instrument for 10-60 minutes and graphene is peeled off into a thin sheet structure and uniformly dispersed to obtain graphene dispersion liquid. 100-400 Pts. wt. spherical alumina filler is added to the graphene dispersion liquid and uniformly stirred to obtain heat-conducting filling slurry. 100 Pts. wt. Liquid silicone rubber adhesive in hexane is mixed with the slurry, uniformly mixed, dried and separated into component (A) and component (B). Hydrogen-containing silicone oil as crosslinking agent and a polymerization inhibitor are added to component (A), in an agitator and uniformly mixed. Molybdenum catalyst and polymerization inhibitor are added into component (B) in agitator and uniformly mixed. Components (A),(B) are uniformly mixed in mass ratio of 1:1, and molded to obtain thermally-conductive electrically insulating thermally radiating silicone rubber interface material.