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Investigation of the Acoustical and Thermal Properties of Sunflower Particleboards

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This paper describes the development and physical properties of a new, binderless, and light biobased particleboard, made of sunflower pith. It is first shown that such boards of densities ranging between 50 and 100 kg/m3 can be manufactured using combined action of heat and pressure. Then, acoustical and thermal performances of the particleboards are characterized. Acoustically, raw boards exhibit modest sound absorption, since constrictions between particles are too thin to enable the propagation. This observation is confirmed with the modeling of the material, and an optimization is performed with perforations, and endows the boards with really interesting absorption properties. Thermally, measurements demonstrate that these sunflower particleboards are very performing insulator, with conductivities ranging from 38 to 42 mW/m/K, and that this performance is not strongly affected by the acoustical optimization.
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Document Type: Research Article

Publication date: 2017-01-01

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  • Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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