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The Impact of Nano-Materials on UV-Protective Coatings

R.H. Cayton and T. Sawitowski
Nanophase Technologies Corporation, US

Keywords:
nanoparticle, UV-protection, coatings

Abstract:
UV-protective, nanocomposite coatings are made by embedding nanocrystalline zinc oxide particles in a polymer matrix. The benefits accrued by incorporating nanoparticles into a polymer matrix become economically driven when several advantageous properties are obtained simultaneously, compared with conventional materials, i.e., transparency with UV-protection, increased abrasion resistance, and toughness.
 
Nanophase Technologies Corporation (NTC) has an integrated family of commercially scaled technologies that are required elements of nanocomposite manufacturing. First, NTC manufactures commercial quantities of metal oxide nanoparticles by vapor phase plasma synthesis techniques. Second, NTC developed a variety of commercially scaled, proprietary technologies to modify the surface of nanocrystalline powders. Third, NTC developed commercially scaled processes to disperse the surface treated nanocrystalline powders into a range of fluids and organic resins used in the manufacture of nanocomposite coatings.
 
In March of 2004, Nanophase formed an exclusive partnership with Altana, BYK-Chemie, to develop and market nanoparticles for use in coatings, inks, and plastics. During the past year the partnership has developed three zinc oxide-based nanoparticle additives for use in UV-protective coatings. These products will be introduced at this presentation.
 
The performance properties of these products will be presented, along with an overview of new nanoparticle-based additives under development.

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