Preparation low dielectric constant material of cordierite with polyacrylamide gel method

A simple method of polyacrylamide gel, to prepare cordierite powders, was presented. The as-synthesized cordierite dielectric properties variations with temperatures were also measured. The silicic acid was used for preparing the powders. The synthesized temperature of polyacrylamide gel method could be decreased by 250°C, compared with the method of solid reaction. The synthesized α-cordierite exhibited excellent electric properties at low temperature. The dielectric constant and dielectric loss tangent of cordierite decreased with increasing test frequencies, where as the dielectric constant and dielectric loss tangent increased with test temperature.