Piezoelectric polymeric materials.

摘要

The invention relates especially to PVF2-PMMA alloys. Its subject matter is polymer alloys some compositions of which make it possible to obtain the beta polar phase directly during crystallisation at ambient pressure or make it possible to obtain piezoelectric coefficients g which are higher than in the case of the polymers employed by themselves, and lower dielectric losses. The invention applies to electromechanical transducers comprising an active element made of piezoelectric polymer. <IMAGE>