近年来，新建建筑物维护结构的保温要求愈来愈高，新型建筑保温材料也得到较大程度的发展。那么你知道岩棉板保温吸声性能是怎样的吗？

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?

岩棉板对中高频声音具有良好的吸声性能。影响岩棉板吸声性能的主要因素是厚度、密度和气流阻力。密度是每立方米材料的重量。气流阻力是单位厚度材料两侧的气压与气流速度之比。气流阻力是影响岩棉板吸声性能的重要因素。如果流阻太小，说明材料稀疏，空气振动容易通过，吸声性能降低；如果流阻过大，说明材料致密，空气振动难以进入，吸声性能也降低。对于岩棉板，吸声性能具有佳的流阻。在实际工程中，气流阻力难以测量，但可以通过厚度和容重进行粗略估算和控制。下面岩棉板厂家与大家分享岩棉板的保温吸音性能。

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.

随着厚度的增加，中低频的吸声系数明显增加，但高频变化不大。厚度不变，容重增加，中低频吸声系数也增加；但当容重增大到一定程度时，材料变得致密，流阻大于佳流阻，吸声系数反而降低。

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.

对于容重16Kg/m3、厚度5cm以上的离心玻璃棉，低频125hz约为0.2，中高频吸声系数接近1。当厚度继续增加时从5cm开始，低频的吸声系数逐渐增大。当厚度大于1m时，低频125hz的吸声系数也会接近1。当厚度不变，容重增加时，保温岩棉的低频吸声系数板也将继续增加。

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.

当容重接近110kg/m3时，吸声性能达到大值，在50mm厚度和125hz频率下接近0.60.7。当容重超过120kg/m3时，吸声性能下降，因为材料变致密，中高频吸声性能受到很大影响。当容重超过300kg/m3时，吸声性能下降很多。建筑声学常用的吸音岩棉板厚度有3cm、5cm、10cm，容重有80、100、120、140、160kg/m3。通常采用5cm厚的济南岩棉板。

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.

以上是小编为大家分享了岩棉板保温吸声性能分析的相关内容。如果需要板材产品的话您可以关注我们网站www.jnhxtcg.com来进行相应的选购。

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.