Dielectric film, method for manufacturing the same, and transducer including the same
US9685254B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jan 22, 2016 |
| Grant date | Jun 20, 2017 |
| Priority date | — |
| Expiry date | Jan 22, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R19/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A dielectric film includes an elastomer and nanoparticles dispersed in the elastomer while chemically bound to the elastomer. The nanoparticles have cyano groups and are manufactured by a sol-gel process using an organometallic compound. A method for manufacturing a dielectric film includes: producing a chelate compound of an organometallic compound; producing a sol of metallic oxide particles having cyano groups by adding a silane coupling agent having a cyano group, an organic solvent, and water to the chelate compound; preparing a mixed solution by mixing the sol of the metallic oxide particles having cyano groups and a polymer solution containing a rubber polymer having a functional group capable of reacting with a hydroxy group; and forming a dielectric film by applying the mixed solution to a substrate and by curing a coating film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.