Elastomer composites with high dielectric constant
AssigneeCooper Technologies Company
InventorsDAVID ERIC RYAN, EVANGELOS MANIAS, BO LI
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Abstract
Elastomer compositions with high dielectric constants are disclosed. Embodiments of the disclosure include a high dielectric constant (high-K) elastomeric composition comprising an elastomer, carbon black (CB), and organoclay (OC). The composition is not dependent on any raw material with inherent high-k or any metal oxide type material that changes conductivity with applied voltages. The composition instead uses distributed electric fields and polarizability with carbon black and organoclays. This allows for a high-k material through polarizability with limited large-scale electron sharing.
Claims20
A non-conducting high dielectric constant polymer composition comprising a polymer, an organic insulative filler, and conductive particle material, and wherein particles of the organic insulative filler are larger than particles within the conductive particle material.
An electrical stress grading apparatus comprising a non-conducting high dielectric constant polymer composition comprising a polymer, an organoclay, and a conductive particle material, wherein the organoclay and conductive particle material form a structured composite in which the organoclay separates particles of the conductive particle material such that the composition is non-conducting.
A method of making an electrical stress grading apparatus comprising:
- providing a monomer, conductive particle material, an organoclay, a plasticizer, a curative, and an inorganic filler;
- mixing the monomer, the conductive particle material, the organoclay, the plasticizer, the curative, and the inorganic filler together under shear stress to form a polymer composition;
- and
- drying the polymer composition.
Dependencies are inferred from the claim text.