TY - JOUR N2 - A thermo-insulating moulding sand with a binder made of aluminosilicate microspheres with organic binder was subjected to testing. The aim of the analysis was to determine selected technological properties of the developed compounds. Compressive strength, friability and gas permeability were determined. The binder content was changed within a range of 5÷20 wt% with a 5% step. The applied matrix is characterized by good thermo-insulating properties and a small size of grains, while synthetic organic binder has favourable functional properties, among which the most noteworthy are the extended life and setting time, good rheological properties as well as high resistance to chemical agents. The intended use of the compound is the casting of 3D CRS (Composite Reinforced Skeletons), which are characterized by a well-developed heat transfer surface area, good absorption of impact energy, low mass and a target thickness of connectors within a range of 1.5÷3 mm. The construction of 3D CRS castings is an original concept developed by the employees of the Department of Foundry Engineering at the Silesian University of Technology. L1 - http://journals.pan.pl/Content/114706/PDF/AFE%202_2020_18.pdf L2 - http://journals.pan.pl/Content/114706 PY - 2020 IS - No 2 EP - 110 DO - 10.24425/afe.2020.131311 KW - Skeleton castings KW - Moulding sand KW - Organic binder KW - Technological properties KW - CRS A1 - Stec, K. A1 - Cholewa, Marian A1 - Kozakiewicz, Ł. PB - The Katowice Branch of the Polish Academy of Sciences VL - vol. 20 DA - 2020.04.30 T1 - Technological Properties of Thermo-insulating Moulding Sands with Organic Binder SP - 105 UR - http://journals.pan.pl/dlibra/publication/edition/114706 T2 - Archives of Foundry Engineering ER -