Carbon Black dielectric constant at any freq between 1-10Ghz

Hi all,
Plz, I im looking for the dielectric properties (e', e'') of Carbon Black at any freqeuncies btween 1-10 GHz
thank u very very much

I doubt, if you'll find any data of the pure material, cause the properties can be expected to depend strongly at least on the particle size. You have to specify a particular quality. Furthermore, I doubt if it has ever been characterized.

O i see, thx anyway, but i found dielectric properties data of some materials like aluminium for example at 10 GHz, so i thought tht i may find it for the CB (carbon black).

I want to predict the dielectric constant of mixture (silicon rubber & CB) by using some mixture equations; so i need to know the CB and the silicon rubber Dielectric Properties to apply them in the equation.

for the Silicon rubber i got it but I still need the CB's dielectric constant to apply its value in my equations.

I realy will be very happy to get ur comments. tx alot