Electrically-conductive materials
US4505847A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 17, 1983 |
| Grant date | Mar 19, 1985 |
| Priority date | — |
| Expiry date | Mar 17, 2003 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01B1/24
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Electrically-conductive materials comprising silicone rubber in combination with carbon particles in graphitic form incorporate a vegetable oil additive to provide enhanced physical and electrical resistance properties. Electrical resistivity for stress loadings below 500 grammes per square millimeter is less than 500 ohm-meters and for step changes in stress is of the order of 1K ohms-cm. A large number of vegetable oils provide these characteristics in the materials when the vegetable oils are present in the material in the range of 10-30% by volume. Carbon loading may be in the range 50-90% when measured in carbon grammes weight in relation to the milliliter content of the volume of silicone rubber and vegetable oil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.