This work deals with an experimental study for the optimisation of paints for application on sound absorbent porous materials. Several formulations of water paints have been sprayed on a melamine foam in different quantities and thickness: the effect of this layer has been tested in term of airflow resistance and normal absorption coefficient measurements. Results give evidence to an increment of sound absorption at low and medium frequencies, and a decrement of sound absorption at high frequencies (up to 2000 Hz), as a dependence of the formulation and the sprayed quantity. Relation between physical and acoustical aspect has been also investigated. Two types of paint present good acoustical and tasteful results and are recommended for practical applications with optimisation of sound absorption at low medium frequencies or high frequencies.

Acoustical optimisation of paints for porous material

Pompoli F.
2003

Abstract

This work deals with an experimental study for the optimisation of paints for application on sound absorbent porous materials. Several formulations of water paints have been sprayed on a melamine foam in different quantities and thickness: the effect of this layer has been tested in term of airflow resistance and normal absorption coefficient measurements. Results give evidence to an increment of sound absorption at low and medium frequencies, and a decrement of sound absorption at high frequencies (up to 2000 Hz), as a dependence of the formulation and the sprayed quantity. Relation between physical and acoustical aspect has been also investigated. Two types of paint present good acoustical and tasteful results and are recommended for practical applications with optimisation of sound absorption at low medium frequencies or high frequencies.
Pompoli, F.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/2409449
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