Soundac® PU-D20 Two-component sandwich anti drumming for floors Description Soundac® PU-D20 is a twocomponent polyurethane compound designed for use in constrained layer applications of steel and aluminium in horizontal objects and floors. ® The Soundac PU-D20 viscoelastic damping layer is a specially formulated polyurethane polymer designed to produce, together with the steel construction and a steel sheet constraining layer, a final structure with very high loss factor over a wide temperature and frequency range. This dramatically reduces noise generated by vibrations in the structure. 6,7 kg A + 1,0 kg B The PU-D20 is well suited and easy to combine with ® the Soundac AS sound absorbing foams. Application Soundac® PU-D20 is used in anti drumming of horizontal floors and reduces vibration levels of steel structures and machines. Stock These materials are always on stock. Please contact us for a quotation and availability. Acoustics & NoiseReduction BV - Celsiusstraat 26 - 1704 RW - Heerhugowaard tel. +31 (0)72 57 27 390 - fax +31 (0)72 57 21 256 - e-mail [email protected] - website www.anr.nl Bankrekeningnr. 67.57.82.775 - K.V.K. nr. 37100240 - BTW nr. 8103.71.315.B.01

Loss factor 4 mm steel, 2 mm PU-D20, 2 mm steel Pre-treatment of surface: Aluminium and stainless steel have to be painted with wash primer. Steel has to be sand blasted or painted. Before use the A and B components should be thoroughly mixed together. Please observe that the pot life after mixing is about 30 minutes. o After mixing the Soundac® PU-D20 may be poured out to specified thickness and the constraining metal sheet laid down in the wet layer. Soundac® PU-D20 Soundac® PU-D20 Soundac® PU-D20 Physical properties B component contains isocyanides of MDI type. Protective gloves and goggles...