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grande">　在實(shí)際工程中，測(cè)定空氣流阻比較困難，但可以通過(guò)厚度和容重粗略估計(jì)和控制。　　1、隨著厚度增加，中低頻吸聲系數(shù)顯著地增加，但高頻變化不大（高頻吸收總是較大的）。　　2、厚度不變，容重增加，中低頻吸聲系數(shù)亦增加；但當(dāng)容重增加到一定程度時(shí)，材料變得密實(shí)，流阻大于</span></span></span><span style="font-size:9.0000pt"><span style="color:#888888"><span style="font-family:宋體">好</span></span></span><span style="font-size:9.0000pt"><span style="color:#888888"><span style="font-family:lucida grande">流阻，吸聲系數(shù)反而下降。對(duì)于厚度超過(guò)5cm的容重為16Kg/m3的離心玻璃棉，低頻125Hz約為0.2，中高頻（>500Hz）的吸聲系數(shù)已經(jīng)接近于1了。當(dāng)厚度由5cm繼續(xù)增大時(shí)，低頻的吸聲系數(shù)逐漸提高，當(dāng)厚度大于1m以上時(shí)，低頻125Hz的吸聲系數(shù)也將接近于1。當(dāng)厚度不變，容重增大時(shí)，離心玻璃棉的低頻吸聲系數(shù)也將不斷提高，當(dāng)容重接近110kg/m3時(shí)吸聲性能達(dá)到zui大值，50mm厚、頻率125Hz處接近0.6-0.7。</span></span></span></p><p><span style="font-size:26px"><img alt="" src="http://img48.afzhan.com/9/20180424/636601626704675276979.jpg" style="height:960px; width:1280px" /></span></p><p><span style="font-size:26px">神州玻璃棉膠棉價(jià)格</span></p><p><span style="font-size:10.5pt"><span style="font-family:microsoft yahei">玻璃棉板的安裝：</span></span><br /><br /><span style="font-size:10.5pt"><span style="font-family:microsoft yahei">玻璃棉板的排板要求：按標(biāo)準(zhǔn)整張幅面進(jìn)行自下而上沿水平方向橫向按1/2板長(zhǎng)交錯(cuò)鋪貼。從墻體拐角處開(kāi)始垂直交錯(cuò)連接固定板材，保證拐角處順直且垂直。陰、陽(yáng)角處玻璃棉板交錯(cuò)互鎖。門(mén)窗洞口四角處玻璃棉不得拼接，應(yīng)采用整塊玻璃棉板切割成形切口與板面垂直，墻面的邊角處應(yīng)用同樣的保溫板粘貼固定。 </span></span><br /> <br /><span style="font-size:10.5pt"><span style="font-family:microsoft yahei">玻璃棉板使用前先設(shè)計(jì)好鋪設(shè)方式。計(jì)算尺寸剪裁下料，剪裁邊緣直線誤差應(yīng)小于5mm，拼縫不大于2mmm，板與板之間的縫隙用膠帶粘接。 </span></span><br /> <br /><span style="font-size:10.5pt"><span style="font-family:microsoft yahei">玻璃棉板鋪設(shè)自上而下相互聯(lián)接，玻璃棉板應(yīng)按順序鋪設(shè)，當(dāng)遇到門(mén)窗洞口時(shí)，應(yīng)符合相關(guān)圖集要求。</span></span></p><p> </p><p><span style="font-size:26px">神州玻璃棉膠棉價(jià)格</span></p> </div> <div id="gvwudqh8b" class="art-next"> <dl class="shangxia"> <dd>上一篇：<a href="/ww19830606-News-283389/">河北神州玻璃棉4月份玻璃棉價(jià)格</a> </dd> <dd>下一篇：<a 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