巖棉板是一種多孔結(jie)構(gou)(gou)吸聲(sheng)原材(cai)料，具備(bei)優良的吸聲(sheng)性能(neng)。這不是由于外(wai)表不光滑，只是由于有大批量的小(xiao)圓孔和內外(wai)相接的小(xiao)圓孔。當(dang)音波斜射到(dao)超(chao)細玻(bo)璃棉處時，聲(sheng)波頻率會順著縫隙(xi)進到(dao)原材(cai)料，造成孔隙(xi)度中(zhong)的氣(qi)體分子結(jie)構(gou)(gou)震動。因(yin)為氣(qi)體的黏性摩擦(ca)阻力(li)(li)和氣(qi)體分子結(jie)構(gou)(gou)與孔邊中(zhong)間的磨擦(ca)，聲(sheng)音轉換為能(neng)源。在現實項目(mu)中(zhong)，巖棉保溫板的空(kong)氣(qi)摩擦(ca)阻力(li)(li)難以測量，但還可(ke)以根據(ju)厚(hou)度和密度來粗略地可(ke)能(neng)和操(cao)縱。

1伴隨(sui)著(zhu)經濟發(fa)展厚度的提升，中低頻(pin)(pin)吸(xi)聲系數能(neng)夠明顯(xian)危害增大，但高(gao)頻(pin)(pin)率趨(qu)勢(shi)分析(xi)不顯(xian)著(zhu)(高(gao)頻(pin)(pin)率消化吸(xi)收一直存有非(fei)常(chang)大)。

2、火成巖(yan)棉(mian)(mian)(mian)(mian)(mian)板厚(hou)(hou)(hou)度(du)(du)(du)一(yi)定，密(mi)(mi)(mi)度(du)(du)(du)增(zeng)(zeng)(zeng)大(da)(da)，中低頻(pin)(pin)吸(xi)(xi)(xi)(xi)(xi)(xi)聲(sheng)(sheng)(sheng)(sheng)系數(shu)增(zeng)(zeng)(zeng)大(da)(da)。但伴隨著(zhu)體(ti)積(ji)密(mi)(mi)(mi)度(du)(du)(du)的(de)提升，原材料的(de)相(xiang)對密(mi)(mi)(mi)度(du)(du)(du)增(zeng)(zeng)(zeng)大(da)(da)，流動性(xing)壓(ya)力超(chao)(chao)過(guo)佳流動性(xing)摩擦(ca)阻(zu)力，吸(xi)(xi)(xi)(xi)(xi)(xi)聲(sheng)(sheng)(sheng)(sheng)系數(shu)減少。針(zhen)對厚(hou)(hou)(hou)度(du)(du)(du)超(chao)(chao)過(guo)5cm 的(de)60kg/m3超(chao)(chao)細(xi)玻璃(li)棉(mian)(mian)(mian)(mian)(mian)，低頻(pin)(pin)125hz 約為(wei)(wei)0.2，中高頻(pin)(pin)率(500hz)消(xiao)化吸(xi)(xi)(xi)(xi)(xi)(xi)收系數(shu)貼近(jin)1。伴隨著(zhu)厚(hou)(hou)(hou)度(du)(du)(du)的(de)提升，吸(xi)(xi)(xi)(xi)(xi)(xi)聲(sheng)(sheng)(sheng)(sheng)系數(shu)慢慢增(zeng)(zeng)(zeng)大(da)(da)。當(dang)厚(hou)(hou)(hou)度(du)(du)(du)超(chao)(chao)過(guo)1 m 時，低頻(pin)(pin)125hz 的(de)吸(xi)(xi)(xi)(xi)(xi)(xi)聲(sheng)(sheng)(sheng)(sheng)系數(shu)貼近(jin)1。當(dang)玻璃(li)纖維棉(mian)(mian)(mian)(mian)(mian)厚(hou)(hou)(hou)度(du)(du)(du)不會改變，體(ti)積(ji)密(mi)(mi)(mi)度(du)(du)(du)增(zeng)(zeng)(zeng)大(da)(da)時，超(chao)(chao)細(xi)玻璃(li)棉(mian)(mian)(mian)(mian)(mian)的(de)低頻(pin)(pin)消(xiao)化吸(xi)(xi)(xi)(xi)(xi)(xi)收系數(shu)增(zeng)(zeng)(zeng)大(da)(da)。當(dang)體(ti)積(ji)密(mi)(mi)(mi)度(du)(du)(du)貼近(jin)110kg/m3時，吸(xi)(xi)(xi)(xi)(xi)(xi)聲(sheng)(sheng)(sheng)(sheng)性(xing)能做到(dao)值，厚(hou)(hou)(hou)度(du)(du)(du)為(wei)(wei)50mm，頻(pin)(pin)率為(wei)(wei)125hz，貼近(jin)0.6ー0.7。當(dang)體(ti)積(ji)密(mi)(mi)(mi)度(du)(du)(du)超(chao)(chao)過(guo)130kg/m3時，原材料的(de)吸(xi)(xi)(xi)(xi)(xi)(xi)聲(sheng)(sheng)(sheng)(sheng)性(xing)能降低，由于材質(zhi)的(de)相(xiang)對密(mi)(mi)(mi)度(du)(du)(du)增(zeng)(zeng)(zeng)大(da)(da)，這對中高頻(pin)(pin)率的(de)吸(xi)(xi)(xi)(xi)(xi)(xi)聲(sheng)(sheng)(sheng)(sheng)性(xing)能有較大(da)(da)的(de)危害。當(dang)體(ti)積(ji)密(mi)(mi)(mi)度(du)(du)(du)超(chao)(chao)過(guo)200kg/m3時，吸(xi)(xi)(xi)(xi)(xi)(xi)聲(sheng)(sheng)(sheng)(sheng)性(xing)能顯著(zhu)降低。聲(sheng)(sheng)(sheng)(sheng)學裝修玻璃(li)纖維棉(mian)(mian)(mian)(mian)(mian)厚(hou)(hou)(hou)度(du)(du)(du)各(ge)自為(wei)(wei)3cm、5cm、10cm，體(ti)積(ji)密(mi)(mi)(mi)度(du)(du)(du)各(ge)自為(wei)(wei)60/70、80、90、100、110、120、130、140、150、 kg/m3。一(yi)般應用5cm厚(hou)(hou)(hou)，60-200立方(fang)的(de)火成巖(yan)棉(mian)(mian)(mian)(mian)(mian)板。