Flexible electroconductive foam, and method of preparation thereof
AssigneeMore Energy Ltd.
InventorsAlexander Osherov, Leonid Sklyarski, Ilya Glants, Yuri Katsman
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Abstract
A method of preparing an electroconductive foam, and the foam so prepared. An electroconductive polymer such as polyaniline is dispersed in a liquid medium that includes an aromatic solvent such as xylene and an organic dopant/dispersant such as an aromatic sulfonic acid. The electroconductive polymer together with the organic dopant/dispersant constitute between 10% and 25% of the resulting dispersion. The dispersion is introduced to the pores of an electrically insulating foam matrix such as polyurethane. Excess dispersion is expelled and the foam is dried actively, to line the pores with an electroconductive lining.
Claims20
A method for preparing an electroconductive foam, comprising the steps of:
- (a) preparing a dispersion by dispersing:
- (i) an electroconductive polymer and
- (ii) an organic compound that acts both as a dopant for said electroconductive polymer and as a dispersant for said electroconductive polymer
- in an aromatic solvent, said electroconductive polymer and said organic compound together constituting between about 10% and about 25% by weight of said dispersion;
- (b) providing an electrically insulating foam having a plurality of pores;
- and
- (c) introducing said dispersion to at least a portion of said pores, thereby forming a precursor foam.
Dependencies are inferred from the claim text.