Metallized nanotube polymer composite (MNPC) and methods for making same

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United States of America Patent

PATENT NO 9550870
APP PUB NO 20110068291A1
SERIAL NO

12313945

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Abstract

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A novel method to develop highly conductive functional materials which can effectively shield various electromagnetic effects (EMEs) and harmful radiations. Metallized nanotube polymer composites (MNPC) are composed of a lightweight polymer matrix, superstrong nanotubes (NT), and functional nanoparticle inclusions. MNPC is prepared by supercritical fluid infusion of various metal precursors (Au, Pt, Fe, and Ni salts), incorporated simultaneously or sequentially, into a solid NT-polymer composite followed by thermal reduction. The infused metal precursor tends to diffuse toward the nanotube surface preferentially as well as the surfaces of the NT-polymer matrix, and is reduced to form nanometer-scale metal particles or metal coatings. The conductivity of the MNPC increases with the metallization, which provides better shielding capabilities against various EMEs and radiations by reflecting and absorbing EM waves more efficiently. Furthermore, the supercritical fluid infusion process aids to improve the toughness of the composite films significantly regardless of the existence of metal.

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Patent Owner(s)

  • THE UNITED STATES OF AMERICA AS REPRESENTED BY THE ADMINISTRATOR OF THE NATIONAL AERONAUTICS AND SPACE ADMINISTRATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Harrison, Joycelyn S Hampton, US 29 404
Kang, Jin Ho Newport News, US 44 221
Kim, Jae-Woo Newport News, US 75 875
Lillehei, Peter T Yorktown, US 15 90
Lowther, Sharon E Hampton, US 13 127
Nazem, Negin Blacksburg, US 1 8
Park, Cheol Yorktown, US 47 487
Sauti, Godfrey Hampton, US 21 597
Taylor, Larry Christiansburg, US 20 226

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