. "International Institute of Acoustics and Vibration (PL)" . "4"^^ . "Thermal stability and degradation of sound absorbing PUR based materials"@en . . . . . . "Va\u0161ina, Martin" . . . . "polyurethanes; PUR; open cell foams; thermal analysis; TG; DTA"@en . "RIV/70883521:28110/09:63508073" . . "28110" . "Ju\u0159i\u010Dka, Martin" . . . "8"^^ . "346221" . "Thermal stability and degradation of sound absorbing PUR based materials" . . "[EA61E3E137EB]" . . . "RIV/70883521:28110/09:63508073!RIV10-MSM-28110___" . "Z(MSM7088352101)" . . "Krakow" . "2009-07-09+02:00"^^ . . "Krakow" . "Thermal stability and degradation of sound absorbing PUR based materials"@en . "Polyurethane (PUR) based open cell foams (Gumotex, Breclav, Czech Republic) and PUR based nonwoven nano-fabric (SPUR, Zlin, Czech Republic) produced by means of Nanospider technology (ELMARCO, Liberec, Czech Republic) thermal stabilities (DTA, TG analysis) in the temperature range of + 40 to + 500 \u00B0C were studied with respect to their application in automotive and aeronautic industry as sound damping materials. Correlation between PUR chemical structure, dimensions of the foam individual cells, nano-fabric air flow resistivity, mechanical, acoustic prop-erties and thermal stability were evaluated. For thermal degradation data evaluation the formal ki-netic model proposed by Ozawa, Flynn and Wall was applied (\u02BAT. Ozawa: Bull. Chem. Soc. Japan, 1965, 38, 1881\u02BA). It was found, that the thermal degradation consists of two steps: 1.step in the temperature range 200 ? 310 \u00B0C, weight loss of 23 ? 58 % (activation energy 97 kJ/mol), 2. step in the temperature range 310 ? 450 \u00B0C, weight loss 33 ? 71"@en . . . "Proceedings of the 16th International Congress on Sound and Vibration. Recent Developments in Acoustics, Noise and Vibration" . "Lap\u010D\u00EDkov\u00E1, Barbora" . "4"^^ . "Lap\u010D\u00EDk, Lubom\u00EDr" . . "Polyurethane (PUR) based open cell foams (Gumotex, Breclav, Czech Republic) and PUR based nonwoven nano-fabric (SPUR, Zlin, Czech Republic) produced by means of Nanospider technology (ELMARCO, Liberec, Czech Republic) thermal stabilities (DTA, TG analysis) in the temperature range of + 40 to + 500 \u00B0C were studied with respect to their application in automotive and aeronautic industry as sound damping materials. Correlation between PUR chemical structure, dimensions of the foam individual cells, nano-fabric air flow resistivity, mechanical, acoustic prop-erties and thermal stability were evaluated. For thermal degradation data evaluation the formal ki-netic model proposed by Ozawa, Flynn and Wall was applied (\u02BAT. Ozawa: Bull. Chem. Soc. Japan, 1965, 38, 1881\u02BA). It was found, that the thermal degradation consists of two steps: 1.step in the temperature range 200 ? 310 \u00B0C, weight loss of 23 ? 58 % (activation energy 97 kJ/mol), 2. step in the temperature range 310 ? 450 \u00B0C, weight loss 33 ? 71" . "Thermal stability and degradation of sound absorbing PUR based materials" . . "978-83-60716-71-7" . .