Electrically conductive polymeric compositions
AssigneeHexcel Corporation
InventorWinston L. Hedges
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Abstract
Electrically conductive polymeric compositions suitable for fabricating devices for safely transporting volatile chemicals and fuels are disclosed. The electrically conductive polymeric compositions include at least one matrix polymer and an electrically conductive filler material incorporated in the matrix polymer in an amount sufficient to provide the conductive polymeric composition with an electrical conductivity of at least 10.sup.-10 S/cm. The electrically conductive filler material is intrinsically conductive polymer coated carbon black particles. The coating of intrinsically electrically conductive polymer provides a protective shield against loss of particle conductivity, contributes to the overall conductivity of the filler material and enhances the mechanical properties of the filled matrix polymer.
Claims12
An electrically conductive polymeric composition comprising:
- at least one nonconductive matrix polymer and incorporated in said matrix polymer an electrically conductive filler material in an amount of 0.5 wt % to 60 wt % of the electrically conductive polymeric composition sufficient to provide said polymeric composition with an electrical conductivity of at least 10.sup.-10 S/cm, said electrically conductive filler material comprising carbon black having an aspect ratio of about 1 coated with an intrinsically electrically conductive polymer.
An electrically conductive polymeric composition comprising:
- a matrix polymer selected from the group consisting of nylons, polyethylene, polypropylene, polyvinylchloride, polyetheramides, polyetherimides, polyethersulfones, polyetherketones, teflons, epoxies, polyesters, acrylonitrile butadiene styrene, polyurethanes, ethylene vinyl acetate, polystyrene, and silicones;
- and
- incorporated in said matrix polymer about 3 wt % to 20 wt % of electrically conductive filler material, said electrically conductive filler material comprising carbon black particles coated with an intrinsically electrically conductive polymer, said intrinsically electrically conductive polymer being a conductive polyaniline.
Dependencies are inferred from the claim text.