Synthesis of a multicomponent silica aerogel-containing nanocomposite for efficient sound absorption properties

Autor:	Saeed Bazgir, Homayoon Ahmad Panahi, Mansoureh Hamidi, Lobat Taghavi, Parvin Nassiri
Rok vydání:	2021
Předmět:	geography geography.geographical_feature_category Nanocomposite Materials science Polymers and Plastics Materials Chemistry Ceramics and Composites Aerogel Composite material Sound (geography) Impedance tube
Zdroj:	Polymers and Polymer Composites. 29:S57-S64
ISSN:	1478-2391 0967-3911
DOI:	10.1177/0967391120985741
Popis:	In this study, the sound properties of four types of nanocomposites have been investigated. To this end, the prepared samples were measured by the impedance tube model BSWA-SW 422, SW477. It was found that the Sound Absorption Coefficient (SAC) of all samples was increased at high frequencies relatively well. The highest SAC at medium and low frequencies was related to the nanocomposite D. The results of sound Transmission Loss (TL) of nanocomposites showed that the TL value for the nanocomposite D (optimum sample) was higher at all frequencies compared to other nanocomposites. The results confirmed that adding organic and mineral materials to the silica aerogel (SA) simultaneously improves its sound properties. By measuring the Sound Pressure Level (SPL) around the enclosure without optimum sample and with optimum sample in the four sound ranges, we found that using nanocomposite D can significantly reduce the noise. According to this study, SA/polyester nonwoven layer/pan nanofibers/nanoclay nanocomposite (nanocomposites D) have great sound absorption properties, which can be used in different environments.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::778ed679f8b25b1b08812d34b096229d https://doi.org/10.1177/0967391120985741 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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