| Nano-material science develops rapidly, and was called the latentest material in 21century recently. Nano-composites of polymers not only can behave small size effect, surface effect and quantum-dimension effect with nanoparticles, but also possess advantages of polymer, which take on abnormal properties in mechanics properties, physical functions (optics electricity magnetism etc). So, Nano-composites of polymer have widely applications.Indium stannum oxide(ITO) as semiconductor have caused a great deal of interest due to their prominent electro-optical behavior. ITO has high prominent transmittance, high infrared reflectance, good electrical conductivity, ITO applied as gas sensors, photovoltaic devices, heat reflecting mirrors, solar cells, flat panel displays, liquid crystal displays, electroluminescent, devices and organic light-emitting diodes(OLED) etc. Although preparations and applications of ITO films have been studied deeply. Nano-ITO composites hardly studied.In those studying works, Nano-composites of polymer were prepared for electromagnetic screening and transparent in military electronic units,apparatus,weapon equipments, electronic cabinets, To keep communications secrets for important offices,laboratory, designing technologic routes of inorganic nanoparticle/nano-composites of polymer, nano-stannum oxide, nano-indium stannum oxide were prepared.Stuctrures of Nano-powders were studied with XRD, FTIR, and TG-DSC. Laser scattering granularity instrument described that nano-ITO was dispersed in ethanol about average 50nm, Configurations of nano-composites was studied with SEM, which described that inorganic nanoparticles can disperse in PMMA with nano-level.
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