Conducting nanotubes or nanostructures based composites, method of making them and applications
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United States of America Patent
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Apr 23, 2013
Grant Date -
Jan 7, 2010
app pub date -
Dec 19, 2006
filing date -
Dec 19, 2005
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Abstract
An electromagnetic interference (EMI) shielding material includes a matrix of a dielectric or partially conducting polymer, such as foamed polystyrene, with carbon nanotubes or other nanostructures dispersed therein in sufficient concentration to make the material electrically conducting. The composite is formed by dispersing the nanotube material in a solvent in which the dielectric or partially conducting polymer is soluble and mixing the resulting suspension with the dielectric or partially conducting polymer. A foaming agent can be added to produce a lightweight foamed material. An organometallic compound can be added to enhance the conductivity further by decomposition into a metal phase.
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