1. Hierarchically porous networks structure based on flexible SiO2 nanofibrous aerogel with excellent low frequency noise absorption.
- Author
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Yang, Mengmeng, Chen, Zhaofeng, Yang, Lixia, Ding, Yang, Chen, Xiaoyang, Li, Manna, Wu, Qiong, and Liu, Tianlong
- Subjects
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FLEXIBLE structures , *AEROGELS , *ABSORPTION of sound , *NOISE pollution , *NOISE , *NANOFIBERS - Abstract
Environmental noise has been regarded as major noise pollution with severe hazards to human physical and mental health. The common commercial fiber sound-absorption materials have insufficient low frequencies wave absorbing and fire-resistant ability, limiting their wide application. To solve these problems, a novel strategy combining flexible nanofibers and rGO/MXene nanosheets was proposed to fabricate rGO/MXene/SiO 2 nanofibers composite aerogel with hierarchically porous structure, which possessed an extremely low density of 9.8 mg/cm3 and superior low-frequency sound absorption ability (NRC value of 0.51). The obtained composite aerogel possessed a large deformation up to 80% (corresponding compressive stress of 17 kPa) and quickly recovered. In addition, the as-prepared aerogel could be easily produced on a large scale, providing a reference for the development of new generation of sound-absorbing products. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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