Process for producing electrically conductive composites and com

Details Process for producing electrically conductive composites and com Process for producing electrically conductive composites and com

1984-09-04

1986-10-14

Lusignan, Michael R.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

427121, 427342, 4273898, 4273899, 4283084, 428268, B05D 302, B05D 512, B32B 700, B32B 514

Patent

active

046172289

ABSTRACT:
Production of electrically conductive composites comprising a dielectric porous substance, e.g., fiberglass fabric, and a pyrrole polymer in the pores of such substance, by treating the porous substance with a liquid pyrrole, and then treating the resulting porous substance with a solution of a strong oxidant in the presence of a non-nucleophilic anion, such as ferric chloride. The pyrrole monomer is oxidized to a pyrrole polymer, which precipitates in the interstices of the porous material. Alternatively, the dielectric porous material can first be treated with a solution of strong oxidant and non-nucleophilic anion followed by treatment with liquid pyrrole, to precipitate an electrically conductive polypyrrole in the pores of the material. The resulting composite of porous material, e.g., fiberglass fabric, containing polypyrrole is electrically conductive while the other properties of such impregnated conductive porous material are substantially unaffected. Several treatments of the porous substance with the pyrrole and oxidant solutions can be carried out to increase the electrical conductivity of the composite.

REFERENCES:
patent: 2354110 (1944-07-01), Ford et al.
patent: 3715233 (1973-02-01), Harrier
patent: 4214031 (1980-07-01), Miyakawa et al.
patent: 4330573 (1982-05-01), Kostandov et al.
patent: 4401545 (1983-08-01), Naarmann et al.
patent: 4468291 (1984-08-01), Naarmann et al.
"Electrochemical Polymerization of Pyrrole on Polymer-Coated Electrodes," O. Niwa and T. Tamamura, J. Chem. Soc., Chem. Commun., Jul. 1, 1984 issue, pp. 817 and 818.

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