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Water Resistant Self-Extinguishing Low Frequency Soundproofing Polyvinylpyrrolidone Based Electrospun Blankets
Jessica Passaro1, Paolo Russo2, Aurelio Bifulco1
1Department of Chemical Materials and Industrial Production Engineering (DICMaPI), University of Naples Federico II, P.le Tecchio 80, 80125 Naples, Italy.
Polymers
|July 24, 2019
Summary
Eco-friendly electrospinning produces thin, water-resistant sound absorbers with excellent low-to-medium frequency sound absorption. These materials also pass mandatory fire tests, showing promise for thermal insulation.
Area of Science:
- Materials Science
- Acoustics Engineering
- Polymer Chemistry
Background:
- Traditional sound absorbers often lack water resistance or struggle with low-to-medium frequency sound absorption.
- Fire safety is a critical requirement in many engineering applications for acoustic materials.
Purpose of the Study:
- To develop eco-friendly, water-resistant sound absorbers with enhanced low-to-medium frequency performance.
- To investigate the material properties and potential for thermal insulation.
Main Methods:
- Eco-friendly electrospinning process utilizing Polyvinylpyrrolidone (PVP) and silica gel particles.
- Characterization using Scanning Electron Microscopy (SEM), Fourier Transform InfraRed (FTIR) Spectroscopy, and ThermoGravimetric Analysis (TGA).
- Measurement of density, porosity, flow resistivity, and preliminary thermal conductivity via Differential Scanning Calorimetry (DSC).
Main Results:
- Production of water-resistant sound absorbers with reduced thickness and excellent sound absorption (250-1600 Hz).
- Materials successfully passed mandatory fire tests, indicating self-extinguishing properties.
- Preliminary Differential Scanning Calorimetry (DSC) results suggest potential for thermal insulation.
Conclusions:
- The chemical nature of Polyvinylpyrrolidone (PVP) is key to achieving desired sound absorption and fire resistance.
- Silica gel particles enhance dimensional stability, water resistance, and self-extinguishing properties.
- The developed electrospun materials offer a promising, eco-friendly solution for acoustic and potentially thermal insulation applications.
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