ABSTRACT
Discordant sound annoys, awakens, angers, distracts, frustrates and creates stresses
that result in physiological and psychological problems. It is invisible, yet its effects are
clearly evident, and it pervades every facet of life.
Synthetic polymers and building materials play an important role in construction of
buildings mainly as a surface furnishing components.
That is why in this paper we present results of our experiments focused on
characterization of the basic acoustic material performance parameters, e.g. frequency
dependence of the sound absorption coefficient of the articles prepared from expanded
poly(styrene), poly(propylene), poly(vinyl chloride), mineral wool and plasterboard.
Paper was focused on determination of the acoustic properties (in the frequency range
16 – 6400 Hz) of selected synthetic polymer materials such as expanded poly(styrene),
poly(propylene), poly(vinyl chloride), mineral wool and plasterboard. Values of sound
absorption coefficient for frequency range were measured.
Second part of article forms measurements of thermal properties with non-stationary
conditions, e.g. thermal conductivity evaluated from dependence of temperature and
time by mathematical model with using Gauss-Newton method.
Obtained results allow optimization of the wall structure construction for household and
building industry applications. It's possible to prepare and produce new materials,
optionally combinations of existing materials, to improvement damping and vibrating
properties.