METHOD FOR MANUFACTURING A PYROELECTRIC MIXTURE

摘要

The present invention relates to a method for manufacturing a pyroelectric mixture, in particular for pyroelectric and piezoelectric elements. The method that is used to do this includes the following steps: mixing at least two compounds in a predetermined mixing ratio, one compound containing a polymerizable, preferably achiral, liquid crystalline monomer, the other compound being advantageously an achiral liquid crystal polymer or copolymer. Each compound contains substituents that form hydrogen bridges. The mixture is heated above the specific glass point. Next, an electrical field is applied, with the help of which the polymerizable monomer polymerizes and the mixture is poled. With the electrical field applied, the mixture is cooled below the glass point. The pyroelectric coefficient of the mixture that can be achieved lies in the order of magnitude of pyroelectric elements of the PVDF type. Its quality factor is, however, higher than that of the known elements of the PVDF type.