Caracterización acústica y térmica de no tejidos basados en fibras naturales

An absorbent material between two parallel partitions improves the sound insulation that would provide such partitions. Synthetic porous materials, such as rock wool or glass wool, are common solutions. However, they are expensive to produce and are generally based on petrochemicals. An alternative can be absorbent materials made by natural fibers. The threads obtained with the fibers, may be woven or cake to produce a non-woven. The development of non-woven materials by natural fibers, may be a promising and environmentally friendly option. In order to use such materials as absorbent materials the acoustic and thermal properties of non-woven made by fibers of coconut, fique - coconut and fique have been characterized. The methods used for the production of the non-wovens were two: the manual method that requires the use of a binder and a press and by means a mechanism of needles that allows linking the fibers together. In this work, we show the results of the measurements of the sound absorption coefficient at normal incidence, the air flow resistance, the thermal conductivity and the dynamic stiffness is shown for the non-wovens fabricated.