National Key Laboratory of Acoustics Institute of Acoustics Chinese Academy of Sciences Beijing 100080 China;
National Key Laboratory of Acoustics Institute of Acoustics Chinese Academy of Sciences Beijing 100080 China;
Graduate University of Chinese Academy of Sciences Beijing 100049 China;
National Key Laboratory of Acoustics Institute of Acoustics Chinese Academy of Sciences Beijing 100080 China;
Graduate University of Chinese Academy of Sciences Beijing 100049 China;
Institute of Chemistry Chinese Academy of Sciences Beijing 100080 China;
Graduate University of Chinese Academy of Sciences Beijing 100049 China;
Institute of Chemistry Chinese Academy of Sciences Beijing 100080 China;
low-frequency acoustic properties; dynamic mechanical properties; Principles of Time-Temperature Superposition; acoustic pipe; sound absorption coefficient;