Sheep farmers are currently facing an oversupply of wool and a lack of willing buyers. Due to low prices, sheep wool is often either dumped, burned, or sent to landfills, which are unsustainable and environmentally unfriendly practices. One potential solution is the utilization of sheep wool fibers in polymer composites. This paper focuses on the study of mechanical vibration damping properties, sound absorption, light transmission, electrical conductivity of epoxy (EP), polyurethane (PU), and polyester (PES) resins, each filled with three different concentrations of sheep wool (i.e., 0%, 3%, and 5% by weight). It can be concluded that the sheep wool content in the polymer composites significantly influenced their physical properties. The impact of light transmission through the tested sheep wool fiber-filled polymer composites on the quality of daylight in a reference room was also mathematically simulated using Wdls 5.0 software.

Department of Machining Assembly and Engineering Metrology Faculty of Mechanical Engineering VŠB Technical University of Ostrava 17 listopadu 2172 15 Poruba 708 00 Ostrava Czech Republic

Faculty of Materials Science and Technology Slovak University of Technology Bottova 25 917 24 Trnava Slovakia

Faculty of Technology Tomas Bata University in Zlin Vavreckova 5669 760 01 Zlin Czech Republic

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