Mechanical/physical properties are the most important parameters that determine the ease with which silica powders can be handled, stored, transported and processed. Because of silica powders have wide range of its application from pharmaceutical industry, printer toners and electronic parts to application in cancer treatment. Due this fact the silica belongs to highly studied substances across different fields. This is a material with a huge potential and very unique mechanical/physical properties of SiO2 powders which make them very attractive. In this paper, friction properties, compressibility factors and flowability of SiO2 microparticles with nanoparticles addition have been investigated. For this purpose a several mixtures with different amount of nanosilica were prepared and characterized. Experimental work was performed by the Freeman Technology FT4 Powder Rheometer, CPS DC24000 Disk Centrifuge and laser particle size analyzer Cilas 1190 in Laboratory of Bulk Materials in Ostrava. Also a basic characterization such as SEM images, shape analysis etc. of the raw input material was made. The first results show that additions of nanoparticles influences all studied parameters. This study make a significant contribute to the valorization “dry-coated fine particles” theory, which is based on guest-host contacts.Keywords: silica, nanoparticles, rheological properties, flowability, compressibility
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