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Sound barrier with polyimide foams as sound absorption material
The invention discloses a sound barrier with polyimide foams as a sound absorption material. The sound barrier comprises internal sound absorption material polyimide and an external metal frame. According to the polyimide foams, isocyanate and aromatic dianhydride are taken as main raw materials, and gas generated through a self reaction is used for preparing the polyimide foams. The external metal frame is of a keel structure, and is connected with a panel and a back plate in a buckled manner. The polyimide foams are inserted between adjacent keels so as to form the sound barrier with the polyimide foams as the sound absorption material. The sound barrier has the beneficial effects that firstly, non-fiber sound absorption material polyimide foams are arranged on the interior, no harm to a human body and the environment exists, and meanwhile the service life of the sound barrier can be greatly prolonged; secondly, carbon structural steel serves as an external metal framework material, the keel structure manner is adopted, and the wind pressure resistance and bending resistance breaking loads of the sound barrier can be greatly improved; and thirdly, the sound barrier is convenient to mount, and the preparation method and the technology are simple.
Sound barrier with polyimide foams as sound absorption material
The invention discloses a sound barrier with polyimide foams as a sound absorption material. The sound barrier comprises internal sound absorption material polyimide and an external metal frame. According to the polyimide foams, isocyanate and aromatic dianhydride are taken as main raw materials, and gas generated through a self reaction is used for preparing the polyimide foams. The external metal frame is of a keel structure, and is connected with a panel and a back plate in a buckled manner. The polyimide foams are inserted between adjacent keels so as to form the sound barrier with the polyimide foams as the sound absorption material. The sound barrier has the beneficial effects that firstly, non-fiber sound absorption material polyimide foams are arranged on the interior, no harm to a human body and the environment exists, and meanwhile the service life of the sound barrier can be greatly prolonged; secondly, carbon structural steel serves as an external metal framework material, the keel structure manner is adopted, and the wind pressure resistance and bending resistance breaking loads of the sound barrier can be greatly improved; and thirdly, the sound barrier is convenient to mount, and the preparation method and the technology are simple.
Sound barrier with polyimide foams as sound absorption material
XU JINGJING (author) / KANG JIAN (author) / GAO LILING (author) / ZHANG YUSUI (author) / ZHU WENHAO (author)
2015-10-28
Patent
Electronic Resource
English
IPC:
E01F
ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
,
Zusätzliche Baumaßnahmen, wie die Ausstattung von Straßen oder die bauliche Ausbildung von Bahnsteigen, Landeplätzen für Hubschrauber, Wegweisern, Schneezäunen oder dgl.
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