PROCESS FOR PREPARING FERROELECTRIC-EPOXY RESIN COMPOSITES WITH COMPOSITION GRADIENT FOR IMPEDANCE MATCHING IN THE RANGE OF 2...4 GHZ, AND COMPOSITES PREPARED THEREBY

摘要

The invention relates to a process for preparing ferroelectric-epoxy resin composites with composition gradient for impedance matching in the range of 2...4 GHz. According to the invention, the process comprises the gravitational settling of PbTiOsuspensions in an epoxy resin to result in composites as thick films or tablets containing 2.5...20% PbTiO-resin with inductive capacities in the range of 5...12 and losses of less than 5% over 500 kHz.