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AssigneeThe United States of America as represented by the Administrator of the National Aeronautics and Space Administration
InventorsJohn W. Connell, Joseph G. Smith, Joycelyn S. Harrison, Cheol Park, Kent A. Watson, Zoubeida Ounaies
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The present invention is directed to the effective dispersion of carbon nanotubes (CNTs) into polymer matrices. The nanocomposites are prepared using polymer matrices and exhibit a unique combination of properties, most notably, high retention of optical transparency in the visible range (i.e., 400-800 nm), electrical conductivity, and high thermal stability. By appropriate selection of the matrix resin, additional properties such as vacuum ultraviolet radiation resistance, atomic oxygen resistance, high glass transition (Tg) temperatures, and excellent toughness can be attained. The resulting nanocomposites can be used to fabricate or formulate a variety of articles such as coatings on a variety of substrates, films, foams, fibers, threads, adhesives and fiber coated prepreg. The properties of the nanocomposites can be adjusted by selection of the polymer matrix and CNT to fabricate articles that possess high optical transparency and antistatic behavior.
A method for dispersing carbon nanotubes in a polymer matrix to prepare a polymer/carbon nanotube nanocomposite, comprising:
A method for producing a polymer/carbon nanotube nanocomposite, comprising synthesis of the polymer in the presence of pre-dispersed nanotubes.
A method for producing a polymer/carbon nanotube nanocomposite, comprising synthesis of the polymer in the presence of pre-dispersed nanotubes with simultaneous sonication throughout the synthesis.
A method for preparing a polymer/carbon nanotube nanocomposite, comprising:
A method for preparing a polymer/carbon nanotube nanocomposite, comprising:
A method for preparing a polymer/carbon nanotube nanocomposite, comprising:
A method for preparing a polymer/carbon nanotube nanocomposite, comprising:
An electrically conductive, optically transparent polymer/carbon nanotube nanocomposite, having an electrically conductivity between approximately 10−12 S/cm and 10−5 S/cm and a greater than 50% optical transparency relative retention at a wavelength of 500 nm.
An electrically conductive, optically transparent poly (amide acid)/carbon nanotube nanocomposite, comprising a carbon nanotube and a poly(amide acid), wherein the poly(amide acid) is
An electrically conductive, optically transparent polyimide/carbon nanotube nanocomposite comprising a carbon nanotube and a polyimide, wherein the polyimide is
An electrically conductive, optically transparent poly(arylene ether)/carbon nanotube nanocomposite comprising a carbon nanotube and a poly(arylene ether), wherein the poly(arylene ether) is
An electrically conductive, optically transparent poly(methyl methacrylate)/ carbon nanotube nanocomposite, comprising a carbon nanotube and a poly(methyl methacrylate), wherein the poly(methyl methacrylate) is
An electrically conductive, optically transparent poly(vinyl polymer)/carbon nanotube nanocomposite, comprising a carbon nanotube and a poly(vinyl polymer), wherein the poly(vinyl polymer) is
Dependencies are inferred from the claim text.