Investigation on the Sound Absorption Properties of Waste Green Tea Residues Covered by Woven Fabric

Both household garbage and noise pollution are urgent challenges to modern society. This paper presents a straight-forward avenue for the utilization of natural waste green tea residues as sound absorption materials. Sound absorbers made of tea residues with 1 cm, 2 cm, and 3 cm thickness were prepared, thus to study the effects of thickness on sound absorption. In addition, tea residues layer is featured backing the woven fabric layer to fabricate multilayer sound absorber and improve the absorption properties. This work has demonstrated that waste green tea residues are especially attractive to be used as sound absorber. It is also feasible to achieve required sound absorption by adjusting tea residues thickness and combination structures with different facing fabrics.

Automated summary

This study presents a method of utilizing waste green tea residues as sound absorption materials and investigates the effects of thickness on sound absorption. By combining the tea residues with fabric layers, multi-layer sound absorbers with improved absorption properties can be achieved.