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url:"/index.php?s=api&c=module&siteid=1&app=news&m=hits&id=65", dataType: "jsonp", success: function(data){ if (data.code) { $(".dr_show_hits_65").html(data.msg); } else { dr_tips(0, data.msg); } } }); </script></span></span> <span>發表時間：2022-03-09</span> </p> </div> <i></i> <p class="label"> </p> </div> <div class="con" id="wjc"> <p>金屬穿孔吸聲板</p><p>1、外形與基本規格：金屬穿孔板是在實際工程中應用為廣泛的裝修材料之一，可用于吊頂和墻面的裝修，聲屏障等。金屬板材一般使用鋁板和鍍鋅鋼板。</p><p>2、吸聲性能：在實際應用當中一般將穿孔板與多孔性吸聲材料復合使用以增加其吸聲頻帶寬度。且在安裝時需在金屬板后面粘貼一層無紡布，在安裝金屬板后留有一定厚度的空腔以增加對低頻的吸收能力。</p><p style="text-align: center;"><img src="http://m.martialartslv.com/udloeda/ueditor/image/202203/164681290491ef3c.jpg" title="3" alt="3"/></p><p>木質穿孔吸聲板</p><p>1、外形與基本規格：木質穿孔吸聲板基本材料為15mm或18mm后的防潮中密度板，表面可以有兩種處理方法，一種是單色的三聚氰胺涂飾層，一種是木紋的真木皮飾面。木質吸聲板的開孔一般分為兩層，上層為小的圓孔或縫隙，下面一層為大的圓孔。</p><p>2、吸聲性能：木質吸聲板在出廠時一般都粘附一層無紡吸聲布，只要安裝時在其后有一定厚度的空腔，就可以單獨作為吸聲材料適用，有較好的中低頻吸聲特性，如果在空腔內填充一定厚度的多孔性吸聲材料，如玻璃棉等，可以有效地提高整個構造的中高頻吸聲特性。</p><p style="text-align: center;"><img src="http://m.martialartslv.com/udloeda/ueditor/image/202203/16468125452096be.jpg" title="2" alt="2"/></p><p>穿孔FC板</p><p>1、外形與基本規格：FC板又稱高壓水泥纖維板，其原料為纖維水泥，經高壓形成板材，無孔FC板多用于隔聲，如隔墻、吊頂等。穿孔FC板一般厚度為4mm，有圓孔和狹縫兩種形式，可以形成一定形狀的圖案。</p><p>2、吸聲性能：穿孔FC板在作為吸聲材料時，其開孔率一般要求大于15%，其吸聲性能主要取決于板后的空腔及填充的多孔性吸聲材料的吸聲特性，當開孔率相對較小時（8%~15%），整個結構的中低頻會有一定程度的增加，但其高頻吸聲性能將會有所下降。當開孔率很低時，吸聲結構將出現共振吸聲的特性。</p><p><br/></p><p>特殊吸聲結構：</p><p>1、吸聲尖劈：吸聲尖劈是一種特殊的吸聲體，如圖（a）所示，在設計頻帶范圍內要求對所有入射聲波進行全部吸收。其吸聲機理是運用阻抗過度的原理，當聲波入射到尖劈上時，材料的聲阻抗與空氣的聲阻抗能夠良好的匹配，從而獲得高效的吸收。</p><p>2、微穿孔板：所謂微穿孔板吸聲結構，就是在厚度小于1mm的薄板上，穿孔徑小于1mm，穿孔率約為1%~3%的微孔板，如圖（b）所示。在經過結構設計后可以得到很好的中低頻吸聲效果。</p><p><br/></p> </div> </div> <div class="context clearfix"> <p class="prevNews bot_left">上一篇：<a href="http://m.martialartslv.com/xwzx/2022030964.html">建筑聲學吸聲材料及原理</a></p> <p class="NextNews bot_right">下一篇：<a href="http://m.martialartslv.com/xwzx/2022030966.html">聲學實驗室具體分為哪幾種</a></p> </div> </div> <div class="mub02xgyd"> <div class="top mub02Top"> <h2>推薦閱讀</h2> </div> <div class="conBox"> <ul 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