Sound-Absorbing Polymer Composite Materials for Construction Purposes

Abstract

The paper presents the results of a study of the influence of the nature fillers (wood flour, wood dust, vermiculite, expanded vermiculite, organoclay) and a polymer matrix (elastomer and thermoplastic) on the sound-absorbing and physico-mechanical characteristics of polymer composite materials. As a result of the studies, it was shown that sound absorption depends on the polymer matrix used - the sound absorption coefficient in the frequency range 2500-5000 Hz is greater for an elastomer-based composite material. It was also found that the nature of the studied fillers, as well as their content, practically does not affect the level of sound absorption of the polymer composite material. Differences appear only at a frequency of 6300 Hz. At high frequencies, expanded vermiculite has shown itself to be the most effective filler in terms of improving sound insulation properties. In the case of using, as a polymer-based thermoplastic, the introduction of a filler does not affect the values of the sound absorption coefficient in the entire frequency range.

Foam processability of polypropylene/sisal fiber composites having near‐critical fiber length for acoustic absorption properties

“…Recent research to develop composites and composite foams, using naturally sourced reinforcements for polymeric matrices, has been carried out for sound‐absorbing applications 59–61 . Table 1 presents a brief comparison of the maximum α value obtained in each work.…”

“…Recent research to develop composites and composite foams, using naturally sourced reinforcements for polymeric matrices, has been carried out for sound-absorbing applications. [59][60][61] Table 1 presents a brief comparison of the maximum α value obtained in each work. As is evident from the table, the PP-SF composites and foamed composites, developed in this work, show a higher value of the sound absorption coefficient.…”

Preparation and Characterization of Sound-Absorbent Based on Polystyrene Reinforced Primary Sludge and Fly Ash from Pulp Mill

“…The main sources of noise exposure are vehicles, rail, metro, construction equipment, industrial enterprises, engineering equipment of buildings, and household noises. The noise is impossible to eliminate, but it can be reduced by using a sound absorbent (Nigmatullina et al, 2020). Furthermore, the growth of industry, urbanization, and transportation increase noise pollution in the environment.…”