CAVITATION RESISTANCE OF COMPOSITE POLYESTER RESIN / BASALT POWDER
Marko Pavlović1, Marina Dojčinović1, Radica Prokić-Cvetković2, Ljubiša Andrić3
1)University of Belgrade, Faculty of Technology and Metallurgy, Belgrade, Serbia,
2)University of Belgrade, Faculty of Mechanical Engineering, Belgrade, Serbia
3)Institute for Technology of Nuclear and Other Mineral Raw Materials, Belgrade, Serbia
The paper presents the results of research on cavitation resistance of the composite based on unsaturated polyester resin and basalt powder, as reinforcement. Basalt powder was obtained by grinding and micronising basaltic rocks from the Vrelo-Kopaonik deposit. Different amounts of basalt powder as reinforcement were applied (g): 0.15; 0.30; 045; 0,50. The mechanical properties (tensile strength, bending strength, hardness) and cavitation resistance properties were determined for the resulting composite. An ultrasonic vibration method (with stationary specimen) was applied according to ASTM G32 standard. Studies have shown that the mechanical properties and cavitation resistance of the composites increase with the addition of basalt powder as reinforcement.
Keywords: composite, unsaturated polyester resin, basalt powder, mechanical properties, cavitation resistance