Addition of stretched anisodiametric particles - carbon fibres - to film composite materials (FCM) significantly decreases the filler content for attaining the necessary low level of electric ...resistance in comparison to filling with particles of isodiametric shape (carbon black, disperse graphite). The low electric resistance of FCM is due to the formation of conducting "chains" of carbon fibres. The effect of the macrostructure of the matrix on the electric resistance of FCM is established: the pore structure of the matrix increases the resistance due to a decrease in the number of interfibre contacts. A decrease in the average size of the filler increases the electric resistance of FCM. The dependence of the electric resistance on the temperature has a pronounced nonlinear character, and in cyclic heating to the temperature at which there are no degradation processes in the polymer matrix, the change in the electric resistance is reversible.
It was found that the structure of FC carbon filler significantly affects transmission and reflection of IR radiation. The penetrating power of FC is higher the more ordered the structure of the ...filler. The lowest transmission of IR radiation is observed in FC with a filler characterized by a macropore structure; microporosity has almost no effect on the penetrating power of FC. The carbon filler significantly affects the reflectivity of FC in the IR region: the intensity of reflection of carbon-containing film materials is one order of magnitude less than for films with no filler. The reflectivity of FC is higher the more perfect the structure of the carbon-containing filler is.PUBLICATION ABSTRACT
