Sound Insulation Properties of Abandoned Fibers Composites

Abstract

In this article, in order to study the sound insulation properties, abandoned cotton and jute fibers were conducted as reinforced materials, TPU and PP were conducted as matrix materials, and double roller mixing and hot pressing molding processes were adopted to prepare composites. Through the L12 (42×13) mixed orthogonal experiment, cotton/TPU, cotton/PP, jute/TPU and jute/PP composites were prepared respectively. Standing wave tube and impedance tube’s sound absorbing and insulation test system which was produced by Beijing Prestige Company were employed to test the sound insulation (transmission loss). And they were used origin software to analyze. Universal mechanical testing machine and Jane suspension combined impact tester were employed to test tensile, bending and impact strength of jute/TPU composites. Results were showed that four kinds of composites had excellent sound insulation properties. And the jute/TPU composite was the most optimal. Under the conditions of thickness in 6 mm and frequency at 6300Hz, transmission loss of jute/TPU composites was up to 30 dB and it had excellent mechanical properties.

Banana fibre-based structures for acoustic insulation and absorption

“…Relation between airflow resistivity and sound absorption of these nonwovens was also established [20]. Studies on using recycled or waste materials are also reported for sound barrier materials [21][22][23][24][25][26][27]. Polyester fibres of different cross-sectional shapes and diameters were used in the nonwoven form.…”

“…In the reported literature, regarding natural fibre-based composites, it has been confirmed that the selection of fibres [31,32] and matrix [33] using various approaches plays a crucial role in determining the end properties [34,35]. Sound insulation of jute [36], glass, polypropylene, polyester [2], waste fibres [21,23] and inorganic particle [37]-based composites has been investigated by researchers. Particle boards based on coir fibres [3] and agriculture waste such as corn cob [38] have also been reported.…”

Constructing Fireproof MXene-Based Cotton Fabric/Thermoplastic Polyurethane Hierarchical Composites via Encapsulation Strategy

“…Nowadays, many researchers make glorious efforts to combine TPU with other materials for a broad application prospect by full exerting the advantages of two materials. , They are focusing on modifying the high-performance fabrics with elastomeric polymers to improve its stab resistance, low-velocity impact and flexural properties and so on. − For example, after coating TPU film on aramid fabric reported by Zhang et al, the flexibility of the fabric was decreased slightly, whereas the stab resistance was significantly improved . Neslihan Karaca examined the alternative sound absorption layer, which consisted of three different elastomeric thin submicron fibers web integrated into rigid glass fiber fabric layers .…”