巖棉板作為建筑材料被廣泛適用，在建筑中人們會比較注重保溫隔音效果，那么巖棉板的保溫隔音效果如何呢、影響保溫隔音效果的向主要因素是哪些呢？今天小編就帶大家一起來了解一下。
影響保(bao)溫(wen)巖棉(mian)板吸(xi)聲(sheng)性(xing)能(neng)的主要因素是(shi)厚(hou)度(du)(du)、密度(du)(du)和(he)空(kong)氣(qi)(qi)流(liu)(liu)(liu)(liu)阻(zu)等。密度(du)(du)是(shi)每(mei)立方米材(cai)(cai)料的重(zhong)量。空(kong)氣(qi)(qi)流(liu)(liu)(liu)(liu)阻(zu)是(shi)單位(wei)厚(hou)度(du)(du)時材(cai)(cai)料兩側空(kong)氣(qi)(qi)氣(qi)(qi)壓(ya)和(he)空(kong)氣(qi)(qi)流(liu)(liu)(liu)(liu)速之比。空(kong)氣(qi)(qi)流(liu)(liu)(liu)(liu)阻(zu)是(shi)影響高端(duan)保(bao)溫(wen)巖棉(mian)板吸(xi)聲(sheng)性(xing)能(neng)最(zui)重(zhong)要的因素。流(liu)(liu)(liu)(liu)阻(zu)太(tai)小(xiao)，說(shuo)明材(cai)(cai)料稀疏，空(kong)氣(qi)(qi)振(zhen)動容(rong)易穿過，吸(xi)聲(sheng)性(xing)能(neng)下降;流(liu)(liu)(liu)(liu)阻(zu)太(tai)大，說(shuo)明材(cai)(cai)料密實，空(kong)氣(qi)(qi)振(zhen)動難(nan)于(yu)傳入，吸(xi)聲(sheng)性(xing)能(neng)亦下降。對于(yu)高端(duan)保(bao)溫(wen)巖棉(mian)板來講，吸(xi)聲(sheng)性(xing)能(neng)存在(zai)最(zui)佳(jia)流(liu)(liu)(liu)(liu)阻(zu)。在(zai)實際工程中，測定空(kong)氣(qi)(qi)流(liu)(liu)(liu)(liu)阻(zu)比較困難(nan)，但可(ke)以通(tong)過厚(hou)度(du)(du)和(he)容(rong)重(zhong)粗(cu)略估計和(he)控制。
1、隨著(zhu)厚度增加(jia)，中(zhong)低(di)頻(pin)吸(xi)聲系數顯著(zhu)地增加(jia)，但高(gao)頻(pin)變化不大。
2、厚(hou)(hou)度(du)(du)不(bu)變，容(rong)重(zhong)(zhong)(zhong)增加(jia)，中(zhong)(zhong)低(di)頻(pin)(pin)吸(xi)(xi)聲(sheng)(sheng)(sheng)(sheng)系(xi)數(shu)亦(yi)增加(jia);但(dan)當(dang)(dang)容(rong)重(zhong)(zhong)(zhong)增加(jia)到一(yi)定程度(du)(du)時(shi)，材料變得(de)密(mi)實(shi)，流(liu)阻(zu)大(da)(da)于(yu)最佳流(liu)阻(zu)，吸(xi)(xi)聲(sheng)(sheng)(sheng)(sheng)系(xi)數(shu)反而(er)下降。對于(yu)厚(hou)(hou)度(du)(du)超(chao)過(guo)(guo)5cm的容(rong)重(zhong)(zhong)(zhong)為16Kg/m3的離心玻璃(li)棉(mian)，低(di)頻(pin)(pin)125hz約(yue)為0.2，中(zhong)(zhong)高(gao)(gao)(gao)(gao)頻(pin)(pin)的吸(xi)(xi)聲(sheng)(sheng)(sheng)(sheng)系(xi)數(shu)已經接近于(yu)1了。當(dang)(dang)厚(hou)(hou)度(du)(du)由5cm繼續增大(da)(da)時(shi)，低(di)頻(pin)(pin)的吸(xi)(xi)聲(sheng)(sheng)(sheng)(sheng)系(xi)數(shu)逐漸提(ti)高(gao)(gao)(gao)(gao)，當(dang)(dang)厚(hou)(hou)度(du)(du)大(da)(da)于(yu)1m以上時(shi)，低(di)頻(pin)(pin)125hz的吸(xi)(xi)聲(sheng)(sheng)(sheng)(sheng)系(xi)數(shu)也(ye)將(jiang)接近于(yu)1。當(dang)(dang)厚(hou)(hou)度(du)(du)不(bu)變，容(rong)重(zhong)(zhong)(zhong)增大(da)(da)時(shi)，高(gao)(gao)(gao)(gao)端(duan)保溫(wen)巖(yan)棉(mian)板的低(di)頻(pin)(pin)吸(xi)(xi)聲(sheng)(sheng)(sheng)(sheng)系(xi)數(shu)也(ye)將(jiang)不(bu)斷提(ti)高(gao)(gao)(gao)(gao)，當(dang)(dang)容(rong)重(zhong)(zhong)(zhong)接近110kg/m3時(shi)吸(xi)(xi)聲(sheng)(sheng)(sheng)(sheng)性(xing)能達到最大(da)(da)值，50mm厚(hou)(hou)、頻(pin)(pin)率125hz處(chu)接近0.60.7。容(rong)重(zhong)(zhong)(zhong)超(chao)過(guo)(guo)120kg/m3時(shi)，吸(xi)(xi)聲(sheng)(sheng)(sheng)(sheng)性(xing)能反而(er)下降，是因(yin)為材料變得(de)致密(mi)，中(zhong)(zhong)高(gao)(gao)(gao)(gao)頻(pin)(pin)吸(xi)(xi)聲(sheng)(sheng)(sheng)(sheng)性(xing)能受到很大(da)(da)影響，當(dang)(dang)容(rong)重(zhong)(zhong)(zhong)超(chao)過(guo)(guo)300kg/m3時(shi)，吸(xi)(xi)聲(sheng)(sheng)(sheng)(sheng)性(xing)能減小(xiao)很多。建筑(zhu)聲(sheng)(sheng)(sheng)(sheng)學中(zhong)(zhong)常用的吸(xi)(xi)聲(sheng)(sheng)(sheng)(sheng)高(gao)(gao)(gao)(gao)端(duan)保溫(wen)巖(yan)棉(mian)板的厚(hou)(hou)度(du)(du)有(you)3cm、5cm、10cm，容(rong)重(zhong)(zhong)(zhong)有(you)80、100、120、140、160kg/m3。通常使用5cm厚(hou)(hou)，的高(gao)(gao)(gao)(gao)端(duan)保溫(wen)巖(yan)棉(mian)板。
