Since no chemical component used possesses magnetic properties (μ* = 1), only dielectric results will be discussed. In this study, we will focus on the influence of the nature of the cullet (CRT or SLS) as well as that of the foaming agents (C, SiC ou AlN) used in this process.
Fig. 2 shows the glass foams dielectric constant (imaginary and real parts) as a function of the per- centage by weight of CRT glass (foam blown with AlN as a foaming agent - Samples 01 to 05). What- ever the soda-lime-silica glass to CRT lead glass ratio in the batch, no significant changes in their die- lectric performance have been noted.