Sound velocity and loss factor of polyurethane composites. Part II.

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Authors

  • W. BANDERA Laboratory of Applied Acoustics and Spectroscopy, Gdańsk University,, Poland
  • K. PAWLACZYK Institute of Chemical Technology, Technical University of Szczecin, Poland

Abstract

Elastic, non-foamed polyurethane compositions to be used as vibro-insulating materials have been developed. The compositions were prepared using poly(propylenoethers) of different molecular weights, toluyene diisocyanate and aluminum hydrate as the filling agent. The effect of the composition contents on viscoelastic properties that is, on sound velocity and loss factor has been determined. It has been found that various types of the filler permit to modify properties of composite and especially its stiffness and internal damping.

References

[1] W. BANDERA, K. PAWLACZYK, Sound velocity and loss factor of polyurethane composites – part I, Archives of Acoustics, 16 34, (1991).

[2] W. BANDERA, K. PAWLACZYK, Wiłaściwości lepkosprężyste poliuretanowej pianki syntaktycznej, Archiwum Nauki o Materiatach, 11, 3-4, 243 (1990).

[3] W. BANDERA, K. PAWLACZYK, Damping properties of polyurethane composites, Proc. of the Inter-Noise Conference, Gothenburg, Sweden 1990, vol. 2, pp. 1363-1366.