DIELECTRIC FILM, METHOD FOR MANUFACTURING THE SAME, AND TRANSDUCER INCLUDING THE SAME

摘要

A dielectric film includes an elastomer, and metallic oxide particles having a particle diameter of 100 nm or less that are chemically bonded to the elastomer and are dispersed in the elastomer in a state of primary particles. A method for manufacturing the dielectric film includes: a chelating process of adding a chelating agent to an organometallic compound to produce a chelate compound of the organometallic compound; a sol manufacturing process of adding an organic solvent and water to the chelate compound to obtain a sol of metallic oxide particles produced by the hydrolytic reaction of the organometallic compound; a mixed solution preparing process of mixing the sol of the metallic oxide particles and a polymer solution containing a rubber polymer having functional groups that optionally react with hydroxy groups; and a film forming process of applying the mixed solution onto a substrate, and curing the resultant coating film.

主权项

1. A method for manufacturing a dielectric film for use in a transducer, the dielectric film including an elastomer and metallic oxide particles having a particle diameter of 100 nm or less that are chemically bonded to the elastomer and are dispersed in the elastomer in a state of primary particles, the method characterized by comprising:
a chelating process of adding a chelating agent to an organometallic compound to produce a chelate compound of the organometallic compound; a sol manufacturing process of adding an organic solvent and water to the chelate compound to obtain a sol of metallic oxide particles having a hydroxy group produced by hydrolytic reaction of the organometallic compound; a mixed solution preparing process of mixing the sol of the metallic oxide particles and a polymer solution containing a rubber polymer having a functional group that optionally reacts with a hydroxy group to prepare a mixed solution; and a film forming process of applying the mixed solution onto a substrate and curing a resultant coating film to obtain a dielectric film.