Material having a resistivity with a positive temperature coeffi

Details Material having a resistivity with a positive temperature coeffi Material having a resistivity with a positive temperature coeffi

1988-04-04

1990-10-30

Barr, Josephine

Compositions

Electrically conductive or emissive compositions

Elemental carbon containing

252503, 252506, 252512, 252516, 252518, 252504, 523468, 523457, 523458, 523459, 523513, 524495, 524496, 524401, 524439, H01B 106

Patent

active

049667297

ABSTRACT:
The invention relates to an electrically conductive, polymer based material with electrical resistivity having a positive temperature coefficient. The material comprises a matrix of thermosetting polymer having conductive particles in the form of fibers distributed through the polymer. The polymer can be an epoxy resin, polyimide, unsaturated polyester, silicone, polyurethane or phenolic resin, and the fibers can be carbon fibers, carbon fibers coated with metal or metal alloy, graphite fibers, graphite fibers coated with metal or metal alloy, graphite intercalation compound fibers, metal fibers, ceramic fibers, or ceramic fibers coated with a metal or metal alloy.

REFERENCES:
patent: 4557860 (1985-12-01), DiSalvo et al.
patent: 4568592 (1986-02-01), Kawaguchi et al.
patent: 4600602 (1986-07-01), Martin et al.
patent: 4664971 (1987-05-01), Soens
patent: 4692272 (1987-09-01), Goswami et al.

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