The Study of Soundproofing Properties of Wood Polymer-Sand Composite

Abstract:

The development of woodworking and furniture industry in the past twentieth century was largely due to the launch of the production of a large group of artificial materials, now classified as wood-polymer composites. Diversity and renewability of the resource base, convenience and cost-effectiveness of wood-polymer composites (WPC) are the main prerequisites for the development of this group of materials. Fillers in thermoplastic wood-polymer composites may be present in a variety of forms. At this stage industrial WPCs are manufactured mainly from small fractions - wood flour and sawdust. This provides a high technological plasticity of production, namely - the possibility of manufacturing products by extrusion and casting methods, a variety of geometric shapes and even with a small thickness of the walls of the structures. However, this is true if we focus on the maximum possible mechanical properties and accuracy of geometric shapes of finished products. If we focus production on the manufacture of sound-proofing WPC, then almost any wood waste can be used for the filling of such composites. To study and predict sound-proofing properties of wood polymer-sand composite (WPSC), a corresponding mathematical model was developed. It is found that with an increase in the thickness of the polymer-sand coating, the coefficient of sound proof significantly increases. For example, a coating thickness of only 4 mm, increases the sound-proofing properties of a wood sample from 16 to 35 dB, thus the sound-proofing properties of the WPSC are improved by half compared to pure wood.

• Periodical: Solid State Phenomena (Volume 284)
• Pages: 993-998
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.284.993
• Online since: October 2018
• Authors: T.N. Storodubtseva, A.A. Aksomitny, V.A. Saldaev*
• Keywords: Composite, Mathematical Model, Soundproofing, Wood Filler

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