Nowadays, the reduction of the noise level, which is generated by engines has become an important challenge. In order to reduce the damages induced by a continuous exposition to vibrations, the production of suitable soundproofing materials is rising attention. For this reason, there is an interest in having sound absorbing blankets of low thickness and/or weight. The final focus is the design and the production of a new solution for thermoacoustic insulation blankets intended for aviation applications based on electrospinning, which has been recognized as an efficient technique for the fabrication of polymer nanofibers. Water resistant self-extinguishing soundproofing polyvinylpyrrolidone/silica mats, acoustically effective at low and medium frequencies, were produced through an eco-friendly electrospinning process. The silica particles stabilize dimensionally the electrospun mats upon thermal treatments that confers water resistance and strongly contribute to the self-extinguishing property. Preliminary results suggest that the mats have potential application for thermal insulation.
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