Superconductive nanocomposite
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United States of America Patent
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Issued Date -
Jan 27, 2011
app pub date -
Jul 22, 2009
filing date -
Jul 22, 2009
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Abandoned
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Abstract
The superconductive nanocomposite is a composition formed by nanoparticles of a high temperature superconductor blended with a polymer matrix containing natural rubber and polyethylene. The high temperature superconductor is preferably a bismuth-based superconductor (BSCCO) having a particle size of about 21 nm, but may be any other high temperature or Type II ceramic, metal oxide superconductor. The superconductor nanoparticles comprise about 15% of the weight of natural rubber in the composition. The polyethylene is preferably low density polyethylene and may comprise between 0% up to about 40% of the weight of natural rubber in the composition. The nanocomposite may be prepared by blending the components and roll milling the rubber. Depending upon the percentage of polyethylene present in the matrix, the nanocomposite has useful applications as a double thermistor (both positive and negative coefficients of electrical resistivity), for antistatic charge dissipation, and for electromagnetic shielding in the microwave region.
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