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Optically clear nanocomposites and products using nanoscale fillers

  • US 7,183,337 B1
  • Filed: 04/30/2003
  • Issued: 02/27/2007
  • Est. Priority Date: 09/03/1996
  • Status: Expired due to Fees
First Claim
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1. A method for preparing a nanocomposite comprising:

  • providing nanofillers comprising particles with a domain size less than 100 nanometers and an aspect ratio ranging from 1 to 3;

    providing a liquid polymer matrix;

    wherein the nanofillers comprise a surface consisting of a thin layer of a phase that is compatible with the matrix composition or a surface wherein a precursor has been reacted with the surface of the nanofillers;

    mixing the nanofillers and the liquid polymer matrix below a loading of 80% by volume and processing the mixture to make a nanocomposite; and

    wherein the nanocomposite has a transparency to light that differs by more than 20% as compared with the transparency to light exhibited by a composite material of similar composition with filler particles having a domain size of at least one micron.

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