Nanoparticles for ceramic and nanocomposite processing

Nanoparticles of various compositions have been fabricated by chemical proc esses. Sol-gel processes and precipitation processes have been used to prep are the nanoparticles and surface modifiers act as vehicles to tailor surfa ce chemistry, the zeta -potential and to avoid agglomeration. in the first described industrial product development, SiO2 nanoparticles have been modi fied with CH3 groupings and materials with high adhesive strength, being fl exible despite the low organic content have been obtained and a binder syst em for glass fiber mars, temperature resistant up to 500 degreesC has been developed. The second development is based on SiO2 nanoparticles coated wit h methacrylic groupings and TiO2 nanoparticles coated with epoxy groupings. The corresponding sols form high density coatings (approximate to 65 % kg volume) and are densified by crosslinking of the organics. These coatings h ave been used for the fabrication of interference layers (SiO2: n approxima te to1.45: TiO2: n=1,92) on plastic and glass.