近年來(lái)，新建建筑物維護(hù)結(jié)構(gòu)的保溫要求愈來(lái)愈高，新型建筑保溫材料也得到較大程度的發(fā)展。那么你知道巖棉板保溫吸聲性能是怎樣的嗎？

In recent years, the insulation requirements of new building maintenance structures are getting higher and higher, and new building insulation materials have also been developed to a greater extent. So do you know the thermal insulation and sound absorption performance of rock wool board?

巖棉板對(duì)中高頻聲音具有良好的吸聲性能。影響巖棉板吸聲性能的主要因素是厚度、密度和氣流阻力。密度是每立方米材料的重量。氣流阻力是單位厚度材料兩側(cè)的氣壓與氣流速度之比。氣流阻力是影響巖棉板吸聲性能的重要因素。如果流阻太小，說(shuō)明材料稀疏，空氣振動(dòng)容易通過(guò)，吸聲性能降低；如果流阻過(guò)大，說(shuō)明材料致密，空氣振動(dòng)難以進(jìn)入，吸聲性能也降低。對(duì)于巖棉板，吸聲性能具有佳的流阻。在實(shí)際工程中，氣流阻力難以測(cè)量，但可以通過(guò)厚度和容重進(jìn)行粗略估算和控制。下面巖棉板廠家與大家分享巖棉板的保溫吸音性能。

Rock wool board has good sound absorption performance for medium and high frequency sound. The main factors affecting the sound absorption performance of rock wool board are thickness, density and air flow resistance. Density is the weight per cubic meter of material. The air flow resistance is the ratio of the air pressure on both sides of the material per unit thickness to the air flow velocity. Air flow resistance is an important factor affecting the sound absorption performance of rock wool board. If the flow resistance is too small, it means that the material is sparse, the air vibration is easy to pass through, and the sound absorption performance is reduced; If the flow resistance is too large, it means that the material is dense, air vibration is difficult to enter, and the sound absorption performance is also reduced. For rock wool board, sound absorption performance has good flow resistance. In practical engineering, air flow resistance is difficult to measure, but it can be roughly estimated and controlled by thickness and unit weight. Below, rock wool board manufacturers share with you the thermal insulation and sound absorption performance of rock wool board.

隨著厚度的增加，中低頻的吸聲系數(shù)明顯增加，但高頻變化不大。厚度不變，容重增加，中低頻吸聲系數(shù)也增加；但當(dāng)容重增大到一定程度時(shí)，材料變得致密，流阻大于佳流阻，吸聲系數(shù)反而降低。

With the increase of thickness, the sound absorption coefficient of medium and low frequency increases obviously, but the high frequency changes little. With the same thickness, the unit weight increases, and the medium and low frequency sound absorption coefficient also increases; However, when the bulk density increases to a certain extent, the material becomes dense, the flow resistance is greater than the optimal flow resistance, and the sound absorption coefficient decreases.

對(duì)于容重16Kg/m3、厚度5cm以上的離心玻璃棉，低頻125hz約為0.2，中高頻吸聲系數(shù)接近1。當(dāng)厚度繼續(xù)增加時(shí)從5cm開(kāi)始，低頻的吸聲系數(shù)逐漸增大。當(dāng)厚度大于1m時(shí)，低頻125hz的吸聲系數(shù)也會(huì)接近1。當(dāng)厚度不變，容重增加時(shí)，保溫巖棉的低頻吸聲系數(shù)板也將繼續(xù)增加。

For centrifugal glass wool with a unit weight of 16kg/m3 and a thickness of more than 5cm, the low frequency 125Hz is about 0.2, and the medium and high frequency sound absorption coefficient is close to 1. When the thickness continues to increase, the low-frequency sound absorption coefficient gradually increases from 5cm. When the thickness is greater than 1m, the sound absorption coefficient of low frequency 125Hz will be close to 1. When the thickness remains the same and the unit weight increases, the low-frequency sound absorption coefficient plate of the thermal insulation rock wool will continue to increase.

當(dāng)容重接近110kg/m3時(shí)，吸聲性能達(dá)到大值，在50mm厚度和125hz頻率下接近0.60.7。當(dāng)容重超過(guò)120kg/m3時(shí)，吸聲性能下降，因?yàn)椴牧献冎旅?，中高頻吸聲性能受到很大影響。當(dāng)容重超過(guò)300kg/m3時(shí)，吸聲性能下降很多。建筑聲學(xué)常用的吸音巖棉板厚度有3cm、5cm、10cm，容重有80、100、120、140、160kg/m3。通常采用5cm厚的濟(jì)南巖棉板。

When the unit weight is close to 110kg/m3, the sound absorption performance reaches a large value, which is close to 0.60.7 at 50mm thickness and 125Hz frequency. When the unit weight exceeds 120kg/m3, the sound absorption performance decreases, because the material becomes dense, and the medium and high frequency sound absorption performance is greatly affected. When the unit weight exceeds 300kg/m3, the sound absorption performance decreases a lot. The commonly used sound-absorbing rock wool board for building acoustics has a thickness of 3cm, 5cm and 10cm, and a unit weight of 80, 100, 120, 140 and 160kg/m3. Usually 5cm thick Jinan rock wool board is used.

以上是小編為大家分享了巖棉板保溫吸聲性能分析的相關(guān)內(nèi)容。如果需要板材產(chǎn)品的話(huà)您可以關(guān)注我們網(wǎng)站www.95fjrc.com來(lái)進(jìn)行相應(yīng)的選購(gòu)。

The above is what Xiaobian shared with you about the analysis of the thermal insulation and sound absorption performance of rock wool board. If you need sheet products, you can follow our website www.jnhxtcg Com.