Hexamethyldiphenyl trisiloxane was synthesized by diphenyl silicon glycol and hexamethyldisiloxane.The optimum reaction conditions were determined: using strongly acidic cationic resin as catalyst,the amount of catalyst was 10% of the total mass,the reaction temperature was 70℃,the ratio of n(hexamethyldisiloxane)∶n(diphenyl silicon glycol) was 1.1,using methylcyclohexane as solvent,and the amount was 50% of the total mass of glycol and hexamethyldisiloxane,the reaction time was 120 min.
[1] Joo J,Lee C Y.High frequency electromagnetic interference shielding response of mixtures and multilayer films based on conducting polymers[J].Journal of Applied Physics,2000,88(1):513-518.
[2] Zhu H J,Dai Z L,Tu W P.A Kind of transparent LED filament encapsulated silicone rubber:CN104164209[P].2015-10-07.
[3] Zhu H J,Dai Z L,Tu W P.Preparation of anti-fog transparent silicone rubber film used on car rearview mirror:CN 104212377[P].2016-01-27.
[4] Grassie N,Macfarlane I G,Francey K F.The thermal degradation of polysiloxanes[J].European Polymer Journal,1979,15:415-422.
[5] Koerner G,Schulze M,Weis J.Silicones chemistry and technology[M].Essen:Vulkan-Verlag,1991,468-472.
[6] Kang D W,Yeo H G,Lee K S.Preparation and characterisation of liquid silicone rubber nanocomposite containing ultrafine magnesium ferrite powder[J].Journal of Inorganic and Organometallic Polymers,2004,14(1):73-84.
[7] Birkefeld A B,Eckert H,Pfleiderer B.A study of aging silicone breast implants using 29Si,1H relaxation and DSC measurements[J].Biomaterials,2004,25(18):4405-4413.
