Preparation and Acoustic Performance of Porous Aerogel Composites of Graphene Oxide and Cellulose

In this study, sound insulation materials with a high sound absorption coefficient were prepared. In this paper, using cellulose (CEL) and graphene oxide (GO) as the main raw materials and epichlorohydrin as the cross-linker, the CEL-GO composite aerogels were prepared via lyophilisation. The struct...

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Bibliographic Details
Published in:Coatings (Basel) 2024-04, Vol.14 (4), p.441
Main Authors: Shao, Jinbao, Lv, Yuexiao, Xue, Zhenhua, Pan, Yanfei, Liu, Jinwei, Dai, Mayin, Qiu, Fengqi
Format: Article
Language:English
Subjects:
Absorptivity
Acoustic absorption
Acoustic attenuation
Acoustic insulation
Acoustic properties
Acoustics
Aerogels
Cellulose
Chemical bonds
Chemical properties
Composite materials
Epichlorohydrin
Epoxy resins
Fourier transforms
Graphene
Graphite
Mechanical properties
Molecular structure
Noise pollution
Porous materials
Raw materials
Sound transmission
Sound waves
Standing waves
Wave attenuation
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Summary:In this study, sound insulation materials with a high sound absorption coefficient were prepared. In this paper, using cellulose (CEL) and graphene oxide (GO) as the main raw materials and epichlorohydrin as the cross-linker, the CEL-GO composite aerogels were prepared via lyophilisation. The structure, molecular bonding, and acoustic absorption mechanisms of the composite aerogel were characterised and analysed using SEM, FTIR, XRD, BET, and Raman. In addition, corresponding molecular structure models were constructed. The acoustic attenuation of the CEL-GO composite aerogel was measured using a standing wave tube acoustic attenuation tester. The results show that the chemical bond between the GO and CEL composite is established, and the addition of graphene makes the pores of the composite more advanced, which is more favorable for sound absorption, and the acoustic absorption coefficient can reach up to 0.87.
ISSN:2079-6412
2079-6412
DOI:10.3390/coatings14040441