Rigid Polyurethane Foams Modified with Biochar |
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| Authors: | Katarzyna Uram,Maria Kurań ska,Jacek Andrzejewski,Aleksander Prociak |
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| Affiliation: | 1.Department of Chemistry and Technology of Polymers, Faculty of Chemical Engineering and Technology, Cracow University of Technology, Warszawska 24, 31-155 Cracow, Poland; (K.U.); (A.P.);2.Polymer Processing Division, Faculty of Mechanical Engineering, Institute of Materials Technology, Poznan University of Technology, Piotrowo 3, 61-138 Poznan, Poland; |
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| Abstract: | This paper presents results of research on the preparation of biochar-modified rigid polyurethane foams that could be successfully used as thermal insulation materials. The biochar was introduced into polyurethane systems in an amount of up to 20 wt.%. As a result, foam cells became elongated in the direction of foam growth and their cross-sectional areas decreased. The filler-containing systems exhibited a reduction in their apparent densities of up to 20% compared to the unfilled system while maintaining a thermal conductivity of 25 mW/m·K. Biochar in rigid polyurethane foams improved their dimensional and thermal stability. |
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| Keywords: | biochar rigid polyurethane foams thermal conductivity polymer fillers sustainability |
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