TY - JOUR N2 - The aim of the present study was to develop a modifier for water glass. The method of thermal generation of metal oxide nanoparticles was adapted and used in the research. Nanoparticles of ZnO from the thermal decomposition of basic zinc carbonate were used. A method for the modifier introduction was developed, and the effect of modifier content and organic solvent type on the physico-chemical properties of binder (viscosity) and quartz wettability was determined. Binder viscosity was examined from the flow curves plotted with the help of a RHEOTEST 2 rotational rheometer equipped with proper software. Quartz wettability was determined examining timerelated changes in the value of the contact angle in a quartz-binder system, until full stabilisation of the angle value has been achieved. Binder modification was carried out on sodium water glass designated as R"145". The water glass modifiers were suspensions of ZnO nanoparticles in propanol and methanol at a fixed concentration of c = 0.3 M and with the size of nanoparticles comprised in a range of <61 - 981 nm>. Water glass modification with the suspensions of ZnO nanoparticles in methanol and propanol showed the effect of modifier on the water glass viscosity and quartz wettability. This effect depends on the type of alcohol used. The ZnO suspension in propanol (alcohol with a longer hydrocarbon chain) affects more strongly the viscosity of binder and quartz wettability than the methanol suspension. L1 - http://www.czasopisma.pan.pl/Content/86942/PDF/11_paper.pdf L2 - http://www.czasopisma.pan.pl/Content/86942 PY - 2012 IS - No 3 DO - 10.2478/v10266-012-0082-1 KW - Water glass KW - Modification KW - Thermal synthesis of ZnO nanoparticles KW - Viscosity KW - Wettability A1 - Kmita, A. A1 - Hutera, B. PB - The Katowice Branch of the Polish Academy of Sciences DA - 2012 T1 - Effect of Water Glass Modification on Its Viscosity and Wettability of Quartz Grains UR - http://www.czasopisma.pan.pl/dlibra/publication/edition/86942 T2 - Archives of Foundry Engineering ER -