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重慶無機纖維噴涂 > 新聞動態 > 企業動態 > 重慶隔音材料廠家:雙層隔音是不是效果更好
重慶隔音材料廠家:雙層隔音是不是效果更好
編輯 : 重慶纖維噴涂廠家    2017-09-29 16:36:12


雙層隔聲結構。根據質量定律,頻率降低一半,傳遞損失要降6dB;而要提高隔聲效果時,質量增加一倍,傳遞損失增加6dB。在這一定律支配下,若要顯著地提高隔聲能力,單靠增加隔層的質量。


例如增加墻的厚度,顯然不能行之有效,有時甚至是不可能的,如航空器上的隔聲結構。這時解決的途徑主要是采用雙層以至多層隔聲結構。

雙層隔聲結構模型,單位面積質量分別為m1、m2,中間空氣層厚度為L。雙層結構的傳遞損失可以進行理論計算,結果比較復雜,在不同頻率范圍可以得到不同的簡化表示,這里只作定性介紹。


一般雙層隔聲結構的兩層,不用相同厚度的同一種材料,以避免這兩層出現相同的吻合頻率。

在設計和施工中要特別注意,兩層之間不能有剛性連接。破壞了固體 —— 空氣 —— 固體的雙層結構,把兩層固體隔層由剛性構件相連,使兩個隔層的振動連在一起,隔聲量便大為降低。


尤其是雙層輕結構隔聲,相互之間必須相互支撐或連接時,一定要用彈性構件支撐或懸吊,同時注意需要分割的兩個空間之間,不能有縫或孔相通。 “ 漏氣 ” 就要漏聲,這是隔聲的實際問題。

以上就是小編為你介紹的雙層隔音是不是效果更好,希望能給你帶來幫助。如您還想獲取更多相關資訊,敬請關注重慶隔音材料廠家!


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