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Novel Materials for Sound-Absorbing Applications

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Materials Physics".

Deadline for manuscript submissions: 20 March 2025 | Viewed by 752

Special Issue Editor


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Guest Editor
Textile Institute, Faculty of Material Technologies and Textile Design, Lodz University of Technology, 116 Zeromskiego Street, 90-924 Lodz, Poland
Interests: research on the production of environmentally friendly polymer composites from waste materials, including textiles; sound absorption tests of composites manufactured based on materials obtained from renewable sources

Special Issue Information

Dear Colleagues,

Unwanted sounds can occur anywhere and can vary in frequency. It is crucial that materials affecting the acoustic quality within indoor and outdoor spaces are employed, but also that the spread of sound from the source is limited. A significant challenge in this domain is the design of materials that absorb sound to the highest possible extent and in the widest possible frequency range, and that also meet specific operational requirements related to, for example, the thickness, type of surface, mechanical parameters, durability or ecology. The aim of this Special Issue is to provide an overview of the progress made in the field of sound-absorbing materials, both in terms of the degree of absorption and the required performance parameters.

This Special Issue addresses topics related to the innovative materials utilized to absorb sounds of various frequencies and in various conditions, namely indoors, outdoors, and directly at the source. It applies to both novel material and structural solutions. Manuscripts that address the production of sound-absorbing materials; their innovative material composition, structure, appearance, adsorption-enhancing additives and modifications; and the functional properties relevant to the application are welcome.

Dr. Eulalia Gliścińska
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

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Keywords

  • sound-absorbing material
  • sound frequency
  • impedance tube
  • technology
  • material composition
  • structure
  • surface
  • modification
  • additives
  • functional properties

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Published Papers (1 paper)

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Research

21 pages, 6191 KiB  
Article
The Influence of Diatomite on the Sound Absorption Ability of Composites
by Michał Łach, Eulalia Gliścińska, Agnieszka Przybek and Krzysztof Smoroń
Materials 2024, 17(18), 4590; https://doi.org/10.3390/ma17184590 - 19 Sep 2024
Viewed by 550
Abstract
Diatomites are well-known mineral materials formed thousands of years ago from the skeletons of diatoms. They are found in many places around the world and have a wide range of applications. This article presents innovative research related to the possibility of using diatomite [...] Read more.
Diatomites are well-known mineral materials formed thousands of years ago from the skeletons of diatoms. They are found in many places around the world and have a wide range of applications. This article presents innovative research related to the possibility of using diatomite as a filler in composites to improve their sound absorption properties. The results of the study of the effect of diatomite processing (calcination) and its degree of fineness on the sound absorption coefficient of thermoplastic composites are presented. Three fractions of diatomite (0 ÷ 0.063 mm; 0.5 ÷ 3 mm; 2 ÷ 5 mm) and its variable mass proportion (0, 25, and 50 wt.%) were used. The composites were made with flax fibers as a reinforcement, polylactide as a matrix, and diatomite as an additional filler. This paper also presents the results of oxide chemical composition, diatomite mineral phase composition, morphology, and thermal conductivity coefficient of all diatomite fractions studied. In addition, the average particle size for diatomite powder was also determined. The most important of the studies was the determination of the acoustic properties of the aforementioned composites. As a result of the tests, it was found that the smallest fraction of diatomite particles and a variant without thermal treatment give the best effect in terms of sound absorption. Full article
(This article belongs to the Special Issue Novel Materials for Sound-Absorbing Applications)
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