Improvement of sound absorption coefficient of glass fiber fabric epoxy composite inherently without deterioration of main mechanical properties


Yüksek İ. Ö. , Uçar N.

POLYMERS & POLYMER COMPOSITES, vol.30, 2022 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 30
  • Publication Date: 2022
  • Doi Number: 10.1177/09673911221086711
  • Journal Name: POLYMERS & POLYMER COMPOSITES
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Chemical Abstracts Core, Chimica, Communication Abstracts, Compendex, INSPEC, Metadex, Civil Engineering Abstracts
  • Keywords: Polystyrene, silica aerogel, glass fiber epoxy composite, sound absorption coefficient, TENSILE PROPERTIES, SILICA, AEROGEL, POLYSTYRENE, FILLER
  • Istanbul Technical University Affiliated: Yes

Abstract

In this study, the sound absorption behaviour of glass fiber fabric epoxy composite (GFFEC) is aimed to be increased without reduction in main mechanical properties and density. The effect of polystyrene (PS) and silica aerogel (SA) on sound absorption, density, tensile, and flexural properties along with drop impact performance of GFFEC were investigated. Both PS and SA was added into epoxy resin. Vacuum infusion method was applied to manufacture GFFEC's. Both PS and SA addition resulted with enhanced sound absorption coefficient (SAC) of GFFEC. Breaking stress and elongation enhanced with either PS or SA addition. Increased absorbed energies during drop impact tests were observed in both PS and SA incorporated GFFEC's compared to reference GFFEC. Density of reference composite (lightness) has improved by addition of SA and PS. Additionally, use of SA improved the SAC of GFFEC. On the other hand, maximum SAC was achieved with use of PS rather than SA.