Which is the most suitable fireproof and soundproof cotton for Kunnai building materials and walls?

Glass wool belongs to a category in glass fibers and is a man-made inorganic fiber. Glass wool is a molten glass fiber, forming a cotton-like material, the chemical composition belongs to the glass class, is an inorganic fiberIt has good molding, small bulk density, thermal conductivity, thermal insulation, good sound absorption, corrosion resistance, and stable chemical properties.

Centrifugal glass wool has good sound absorption performance for sound medium and high frequency. The main factors affecting the sound absorption performance of centrifugal glass wool are thickness, density and air flow resistance. Density is the weight of material per cubic meter.

Air flow resistance is the ratio of air pressure on both sides of a material to air velocity per unit thickness. Air flow resistance is the most important factor affecting the sound absorption performance of centrifugal glass wool. If the flow resistance is too small, 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, the air vibration is difficult to transmit, and the sound absorption performance is also reduced.

For centrifugal glass wool, there is an optimal flow resistance for sound absorption. In practice, it is difficult to determine the air flow resistance, but it can be roughly estimated and controlled by thickness and bulk density. 1. With the increase of thickness, the sound absorption coefficient of medium and low frequency increases significantly, but the high frequency does not change much (high frequency absorption is always larger).

2. The thickness remains unchanged, the bulk density increases, and the sound absorption coefficient of medium and low frequency 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. For centrifugal glass wool with a bulk density of 16kg m3 with a thickness of more than 5cm, the low frequency of 125Hz is about, and the sound absorption coefficient of medium and high frequency (>500Hz) is close to 1. When the thickness continues to increase from 5cm, the sound absorption coefficient of low frequency gradually increases, and when the thickness is greater than 1m, the sound absorption coefficient of low frequency 125Hz will also be close to 1.

When the thickness remains unchanged and the bulk density increases, the low-frequency sound absorption coefficient of centrifugal glass wool will also continue to increase, and the sound absorption performance reaches the maximum value when the bulk density is close to 110kg m3, and the thickness of 50mm and the frequency of 125Hz are close. When the bulk density exceeds 120kg m3, the sound absorption performance decreases, because the material becomes dense, and the sound absorption performance of medium and high frequency is greatly affected, and when the bulk density exceeds 300kg m3, the sound absorption performance decreases a lot. The thickness of the sound-absorbing glass wool commonly used in building acoustics is kg m3.

Centrifugal glass wool with a thickness of 5cm and 12-48kg m3 is usually used.

Glass wool board is a very suitable soundproof cotton, fireproof and energy-saving, good sound insulation effect, suitable for engineering cotton, ** low.

Damping sound insulation felt, the material adopts the most advanced production technology in Europe, and is a kind of wall sound insulation material produced in China. It is a green, economical and durable product with a service life of 50 years.

Acoustic blanket is a kind of high-density membrane with a certain flexibility made of elastic materials such as rubber and plastic as the main raw materials, which is mainly used to match with gypsum board, used for wall sound insulation and ceiling sound insulation, and is also used for sound insulation and damping and vibration damping of pipelines and mechanical equipment.

The sound insulation material is the introduction of advanced technology and equipment from the United States, the best anti-aging and corrosion-resistant odorless EPDM rubber and more than a dozen kinds of organic minerals refined in a certain proportion, and the back is pasted with a layer of white sound-absorbing cloth, which is environmentally friendly and odorless; It has a fairly good suppression effect on low-frequency and high-frequency sounds, and can effectively suppress the propagation of various vibrations; The material can be cut arbitrarily, the construction is very convenient, and it has the following advantages compared with other domestic products:

1. Good flexibility, repeated fracture will not break;

2 Fire protection function.

3.Super sound insulation.

The products are widely used in the construction industry, home bedrooms, workshops, computer rooms, air compressors, conference rooms, multi-function halls, KTV song halls, industrial pipelines, offices, automobiles and other places that need noise reduction.

Areas of application of acoustic felt.

1. Civil residential applications: (wall sound insulation, ceiling sound insulation, pipe sound insulation).

2. Application of entertainment venues: (KTV private rooms, partition walls, ceilings, floors, etc.).

3. Application of office space: (light walls, partitions, conference rooms, etc.).

4. Application of industrial sites: (plant walls, roofs, equipment, automobiles, doors, control rooms, etc.).