4954.1:
Fabrication of Ceramic Nanopowders for Ceramic/Polymer-Composites with application in dental medicine
Abstract
Flame reactors have high potential for synthesis of inexpensive nanopowders, since submicron size particles are made this way on an industry scale. In this first feasibility study 500g of nonagglomerated silica oxide nanopowder will be synthesized by oxidation of metalorganic-precursors (e.g. hexamethylendisiloxane) in a specific flame reactor at the ETHZ. The particle size and phase composition will be precisely determined and controlled by parameters such as reactant gas mixing, oxygen partial pressure, flame temperature, residence time, flame configuration, precursor concentration and electrical charging.
The further goal of this nanopowder fabrication is its industrial application as nonagglomerated inorganic component in ceramic/polymer-nanocomposites for dental fillers. Important improvemements are finally expected for optical characteristics of the composite due to the better achieved homogeneity of the components.