Elastomeric material
AssigneesTyco Electronics UK Ltd., Tyco Electronics Raychem GmbH
InventorsMatthew Paul James, Ladislaus Kehl, David Francis Pearce
Life of this patent
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Abstract
An elastomeric material for providing electrical stress control comprises 5 to 40 volume percent low structured carbon black, 0.5 to 10 volume percent of high structured carbon black, up to about 30 volume percent of high permittivity inorganic fillers, and a remainder of polymeric carrier material and functional additives.
Claims14
An elastomeric material compound for providing electrical stress control, comprising:
- up to about 50 volume percent selected from a group of ethylene, propylene, and diene monomer rubber;
- up to about 10 volume percent of low structured carbon black;
- 0.5 to about 3 volume percent of high structured carbon black;
- up to about 1 volume percent sterically hindered primary phenolic antioxidant stabilizer;
- up to about 2 volume percent polymeric extrusion process aid;
- up to about 1 volume percent hindered thiophenol antioxidant stabilizer;
- and
- up to about 30 volume percent inorganic filler.
An elastomeric material compound for providing electrical stress control, comprising:
- up to about 50 volume percent selected from a group of ethylene, propylene, and diene monomer rubber;
- up to about 2 volume percent Epichlorohydrin rubber;
- up to about 45 volume percent of low structured carbon black;
- 0.5 to about 5 volume percent of high structured carbon black;
- up to about 1 volume percent sterically hindered primary phenolic antioxidant stabilizer;
- up to about 2 volume percent Zinc-Stearate;
- and
- up to about 1 volume percent hindered thiophenol antioxidant stabilizer.
An elastomeric material compound for providing electrical stress control, comprising:
- up to about 20 volume percent selected from a group of ethylene, propylene, and diene monomer rubber;
- up to about 20 volume percent of low structured carbon black;
- 0.5 to about 2 volume percent of high structured carbon black;
- up to about 1 volume percent sterically hindered primary phenolic antioxidant stabilizer;
- up to about 1 volume percent Zinc-Stearate;
- up to about 1 volume percent hindered thiophenol antioxidant stabilizer;
- and
- up to about 60 volume percent inorganic filler.
Dependencies are inferred from the claim text.