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This article presents the results of an investigation of acoustic and thermophysical properties of insulation panels made from recycled technical textiles originating from the automotive industry. Measurements were performed on the samples of insulation panels (Senizol AT XX2 TL60), which were modified with liquid flame retardants (ISONEM ® ANTI-FIRE SOLUTION, ECOGARD ® B45, HR Prof). Another method of treatment was carried out by surface application of non-flammable facing (woven carbon fibre, nonwoven carbon fibre). Retardants were applied to the samples by surface spraying and soaking. The results showed a high ability of material to absorb sound in the frequency range 350 Hz-2 kHz. The sound absorption coefficient ranged from 0.82 to 0.9 in the frequency range 500 Hz-2 kHz. The noise reduction coefficient is 0.75. After material modification with the flame retardants, there was no significant change of sound absorption. The thermal conductivity coefficient of material before modification was 0.038 W⋅m -1 ⋅K -1 . After application of the flame retardants, the thermal conductivity coefficient increased depending on type and method of retardant application in the range of 2.6-105.3%. The smallest change was detected after modification of material with ECOGARD ® B45.

polymers

Influence of Flame Retardant Impregnation on Acoustic and Thermophysical Properties of Recycled Technical Textiles with the Potential for Use in Wooden Buildings