Silicone rubber composition and power cable
US10584227B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 2, 2016 |
| Grant date | Mar 10, 2020 |
| Priority date | — |
| Expiry date | Jan 28, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K2201/006
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Disclosed herein are a silicone rubber composition and a power cable. The silicone rubber composition has excellent insulation properties and a high permittivity and which can further become a silicone dielectric material having a low specific gravity and a high strength. The power cable in which a terminal connection part or an intermediate connection part is composed of a cured molded product of the just-mentioned composition.The silicone rubber composition includes (A) 100 parts by weight of an organopolysiloxane containing at least two Si-bonded alkenyl groups in one molecule thereof, (B) 5 to 50 parts by weight of a reinforcing silica having a specific surface area measured by a BET method of 50 m2/g to 400 m2/g, (C) 0.3 to 3 parts by weight of carbon nanotubes having an average diameter of 0.5 nm to 50 nm, and (D) a curing agent in an amount necessary for curing of the composition. A cured molded product of the composition has a volume resistivity of at least 1010 Ω·cm and a relative permittivity of at least 5.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.