Electrorheological elastomers useful as variable stiffness articles
US5607996A · kind A · utility
21Cited by
13References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 5, 1994 |
| Grant date | Mar 4, 1997 |
| Priority date | — |
| Expiry date | Oct 5, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L79/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
This invention is directed to an ER elastomer composition comprising natural rubber and polarizable particles dispersed therein, which elastomer can undergo changes in Youngs modulus when subjected to an electric field and having a Youngs modulus of at least about 2 Mpa when not subject to an electric field, wherein the ratio of the electrical conductivity of the particles to the electrical conductivity of the natural rubber is between about 10.sup.4 and 10.sup.10. The invention also include variable stiffness mounts, such as engine mounts, made from the composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.