SOUND ABSORBING MATERIAL AND SPEAKER USING SAME

SOUND ABSORBING MATERIAL AND SPEAKER USING SAME

The present disclosure provides a sound absorbing material. The sound absorbing material comprises MEL-structural-type molecular sieves, the MEL-structural-type molecular sieves comprising frameworks and extra-framework cations, the frameworks comprising silica and an oxide MxOy containing an elemen...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Wang, Hezhi, Dai, Jiqiang, Tang, Kun, Feng, Hongshu
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
COMPOUNDS THEREOF
DEAF-AID SETS
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
INORGANIC CHEMISTRY
LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS
METALLURGY
NON-METALLIC ELEMENTS
PUBLIC ADDRESS SYSTEMS
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Beschreibung
Zusammenfassung:The present disclosure provides a sound absorbing material. The sound absorbing material comprises MEL-structural-type molecular sieves, the MEL-structural-type molecular sieves comprising frameworks and extra-framework cations, the frameworks comprising silica and an oxide MxOy containing an element M which is a non-silicon element; wherein a mass ratio of Si to M in the framework is at least 80, the extra-framework cations comprise at least one of hydrogen ions, alkali metal ions, alkaline earth metal ions and transition metal ions, and a content of the extra-framework cations is between 0.05 wt % and 1.5 wt %.