摘要:
The present invention relates to a polymer layer structure with ferroelectret properties, comprising a continuous first polymer layer (1) and a continuous second polymer layer (2), the first and second polymer layers (1, 2) being connected to one another to form voids (4) by connecting portions (3) arranged between the continuous polymer layers (1, 2). According to the invention, the polymer layer structure is in the form of an integral extruded structural element.
摘要:
The present invention relates to a polymer material comprising a polymer and an organically modified layered silicate dispersed in the polymer. The total content of alkali and/or alkaline earth metal cations in the polymer material is ≦1 ppm. It relates further to the use of the polymer material as an electret material, and to an electromechanical converter comprising such a polymer material.