Polymer-ceramic composites with excellent TCC
US7672113B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 14, 2007 |
| Grant date | Mar 2, 2010 |
| Priority date | — |
| Expiry date | Sep 29, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K2201/068
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Polymer-ceramic composite materials for use in the formation of capacitors, which materials exhibit very low changes in temperature coefficient of capacitance (TCC) in response to changes in temperature within the range of from about −55° C. to about 125° C. Specifically, these capacitor materials have a change in TCC ranging from about −5% to about +5%, in response to changes in temperature within the desired temperature range. The inventive composite materials comprise a blend of a polymer component and ferroelectric ceramic particles, wherein the polymer component includes at least one epoxy-containing polymer, and at least one polymer having epoxy-reactive groups. The inventive polymer-ceramic composite materials have excellent mechanical properties such as improved peel strength and lack of brittleness, electrical properties such as high dielectric constant, and improved processing characteristics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.