Collection

zero Useful+1

zero

Centrifugal glass wool

building material

Centrifugal glass wool melt Centrifuge for glass in state Injection method Process for fiber coating Thermosetting resin The filamentous material is then heat cured deep processing Processing, can be made into Series of products 。 Centrifuged glass wool has fluffy and interlaced internal fibers, with a large number of tiny pores, which is typical Porous sound-absorbing material , with good sound absorption characteristics. Centrifugal glass wool can be made wallboard 、 ceiling 、 Space absorber Can absorb a lot of Acoustic energy , lower reverberation time To reduce indoor noise.

Chinese name: Centrifugal glass wool
Advantages: Flame retardant, non-toxic and corrosion resistant
Application: Centrifugal glass wool board, centrifugal glass wool mat

Features: No skin irritation during construction
Thickness: 100-150mm
Role: Wall sound absorption, wall sound insulation, wall thermal insulation, wall thermal insulation

catalog

features

Announce

edit

Flame retardant, non-toxic, corrosion resistant, small unit weight thermal conductivity Low chemical stability Strong, low moisture absorption Hydrophobicity It has many advantages, such as good heat preservation, heat insulation Sound absorbing material , has a very wide range of uses. The plates, felt and tubes made of this material have been widely used in construction, chemical industry, electronics, electric power metallurgy , energy, transportation and other fields Sound absorption and noise reduction , the effect is very significant.

Due to its soft texture and fine fiber, centrifugal glass wool will not irritate the skin during construction Construction unit Welcome to become the first choice of thermal insulation products.^[1]

Centrifugal glass wool

Glass wool mat 、 Sound-absorbing cotton Felt work Sound absorbing material When using, leave an air layer behind it or paste it on the surface Decorative materials 。 The thicker the air layer is in the range of 100-150mm, the higher the sound absorption rate in the middle and low range. If the air is thickened to 300mm, the range of effective sound absorption rate will be expanded to 100Hz.^[1]

Difference

Announce

edit

Ultra fine glass wool

Glass wool Thermal insulation material Yes Quartz sand 、 feldspar 、 Sodium silicate 、 boric acid And other raw materials. Melt at high temperature to produce fiber cotton less than 2um, and then add thermosetting resin adhesive Pressure and high temperature shaping can produce various shapes and specifications of board, felt and pipe products. The surface can also be pasted with aluminum foil or PVC film. The product has light volume weight thermal conductivity Small absorption coefficient Large, good flame retardancy. Can be widely used Thermal equipment Air conditioning thermostats, cold and hot pipes, ovens Drying room , cold storage and preservation, building insulation, heat insulation, sound insulation, etc.

Centrifugal glass wool

The glass wool will be melt Centrifuge for glass in state Injection method Process for fiber coating Thermosetting resin The filamentous material is then heat cured deep processing Processing, can be made into Series of products 。 It is flame retardant, non-toxic, corrosion resistant, small unit weight thermal conductivity Low chemical stability Strong, low moisture absorption Hydrophobicity Good and many other advantages.

application

Announce

edit

Cotton board

Centrifugal glass wool board It is made of centrifugal cotton with certain strength after curing treatment board Products, whether at high temperature or Low temperature environment It can maintain good thermal insulation performance and is mainly used for advanced buildings Interior wall cubicle ， smallpox Suspended ceiling, iron sheet air duct or Bellows Insulation of inner wall Sound absorption and noise reduction , Metal Ceiling Sweating control, etc., has broad application prospects.

Blanket

Centrifugal glass wool mat It is a coiled material made to meet the needs of large-area laying. In addition to maintaining the characteristics of thermal insulation, it also has excellent shock absorption and sound absorption characteristics, especially for medium and low frequencies and various vibration noises, which is conducive to reducing noise pollution And improve the working environment.

This material can also be cut as needed during construction. It is mainly used in building interiors, noise elimination systems and vehicles, Refrigeration equipment The effect of shock absorption, sound absorption and noise reduction of household appliances is very ideal.

yes aluminum foil Veneer Glass wool mat It also has strong thermal radiation resistance, and is the lining material for the inner walls, compartments and flat roofs of high-temperature workshops, control rooms, machine rooms.^[1]

When centrifugal glass wool is used in buildings, the surface often needs to be attached with a certain sound permeable finish, such as the surface of plastic film 、 Metal mesh 、 window screening 、 Fireproof cloth 、 Glass fiber cloth The original sound absorption characteristics can be basically maintained. Centrifugal glass wool is one of the most commonly used materials for building sound absorption because of its excellent characteristics of fire prevention, heat preservation and easy cutting. However, the centrifugal glass wool surface has no Decorative In addition, there will be fiber spilling, so it must be made into various sound absorption components for concealed use. The most commonly used and inexpensive structure is perforated Paper faced gypsum board Or made of Fill in Centrifugal glass wool Perforated plate Walls, Perforation rate When it is greater than 20%, it can basically give full play to centrifugation Glass wool Sound absorption performance. In order to prevent glass wool fiber from spilling out, a layer of non-woven fabric should be attached behind the perforated plate Mulberry paper Isoacoustic fabric, or use Glass cloth , plastic film, etc. The panel similar to perforated gypsum plaster board also has perforated metal plate (such as aluminum plate), perforated wood plate, perforated Fiber cement board , Perforation Mineral wool board Etc.

Glass wool board After treatment, it can be made into acoustic ceiling board or acoustic wallboard. Generally, 80-120kg/m3 glass wool board is wrapped with fireproof and sound permeable fabric after being cured with glue to form an attractive and easy to install sound-absorbing wall board. The common dimensions are 1.2m × 1.2m, 1.2m × 0.6m, 0.6m × 0.6m, and the thickness is 2.5cm or 5cm. There is also direct sound transmission on the surface of 110Kg/m3 glass wool Decorative materials Sound absorbing ceiling board formed. Whether Glass wool Sound absorption wallboard High capacity and heavy glass wool shall be used for the acoustic ceiling board, and it shall be strengthened to prevent board Deformed or too soft. This kind of building materials not only have good decorative properties, but also retain the good sound absorption characteristics of centrifugal glass wool, Noise reduction coefficient NRC Generally, it can reach more than 0.85.

In large spaces such as stadiums and workshops Sound absorption and noise reduction , centrifugal glass wool is often used Sound absorbing material Of absorber 。 The sound absorber can be made into plate, column, cone or other shaped bodies according to requirements. The sound absorber is filled with centrifugal glass wool inside, and the surface is sound permeable Surface course Package. Since the sound absorber has multiple surfaces, the sound absorption efficiency is very high.

On the road Sound barrier In order to prevent noise reflection, sound absorption measures need to be taken at the side facing the vehicle, and centrifugal glass wool is often used as Filler material The surface layer is a barrier plate of perforated metal plate. To prevent Glass wool Absorb water and get wet outdoors, sometimes use PVC Or wrapped with plastic film.^[1]

purpose

Announce

edit

Glass wool mat 、 Sound-absorbing cotton Felt is an ideal Sound absorption And thermal insulation materials, which are widely used for heat insulation of house walls and ship engine rooms; Computer Room 、 Cold storage Constant temperature; Noise reduction of various generator rooms and pump rooms; Audio cabinet, audio adjustment, etc.

influence factor

Announce

edit

The sound absorption characteristics of centrifugal glass wool are not only related to thickness and unit weight, but also related to Cover Material, structure and other factors. In the construction application, it is also necessary to take into account the cost, beauty, fire prevention, moisture-proof, dust, aging resistance and other issues.

Centrifugal glass wool belongs to Porous sound-absorbing material It has good sound absorption performance. The reason why centrifugal glass wool can absorb sound is not because of its rough surface, but because it has a large number of internal and external micro pores and holes. When the sound wave is incident on the centrifugal glass wool, the sound wave can enter the material along the pores, causing the vibration of air molecules in the pores. Due to air Viscous resistance And the friction between air molecules and pore wall, Acoustic energy It is converted into heat energy and consumed.

Centrifugal glass wool has good sound absorption performance for medium and high frequency sound. The main factors affecting the sound absorption performance of centrifugal glass wool are thickness, density and air Flow resistance Etc. Density is the weight per cubic meter of material. Air flow resistance is the ratio of air pressure and air velocity on both sides of the material per unit thickness. Air flow resistance is the most important factor affecting the sound absorption performance of centrifugal glass wool. The flow resistance is too small, indicating that the material is sparse, air vibration is easy to pass through, and the sound absorption performance is reduced; Too large flow resistance indicates that the material is dense, air vibration is difficult to transmit, and sound absorption performance is also reduced. For centrifugal glass wool, the sound absorption performance has the best flow resistance.

In actual engineering, measure the air Flow resistance It is difficult, but can be roughly estimated and controlled by thickness and unit weight.

1. With the increase of thickness, medium and low frequency Sound absorption coefficient Significant increase, but little change in high frequency (high frequency absorption is always large).

2. When the thickness is constant, the unit weight increases, and the sound absorption coefficient at middle and low frequencies 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 instead. 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 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. When the thickness is more than 1m, the sound absorption coefficient of low frequency 125Hz will also be close to 1. When the thickness is constant and the unit weight is increased, the low-frequency sound absorption coefficient of centrifugal glass wool will also be continuously improved. When the unit weight is close to 110kg/m3, the sound absorption performance will reach Maximum , 50mm thick, frequency of 125Hz is close to 0.6-0.7. When the unit weight exceeds 120kg/m3, the sound absorption performance decreases because the material becomes dense and the sound absorption performance at medium and high frequencies is greatly affected. When the unit weight exceeds 300kg/m3, the sound absorption performance decreases a lot. Architectural acoustics Sound absorption commonly used in Glass wool Its thickness is 2.5cm, 5cm and 10cm, and its unit weight is 16, 24, 32, 48, 80, 96 and 112kg/m3. Generally, 5cm thick, 12-48kg/m3 centrifugal glass wool is used.^[1]

The sound absorption performance of centrifugal glass wool is also closely related to the installation conditions. When Glass wool board When there is an air layer behind, the sound absorption effect is similar to that of the glass wool board with the same thickness and no air layer. In particular, the sound absorption performance of medium and low frequencies will be greatly improved than that of the material on the hard bottom, Sound absorption coefficient It will increase with the increase of the thickness of the air gas layer, but the effect will not be obvious when it reaches a certain value.

Use different unit weights Glass wool Stacked together to form a form of gradually increasing bulk density, which can achieve greater sound absorption effect. For example, the sound absorption effect of stacking a layer of 2.5cm thick 24kg/m3 cotton board with a layer of 2.5cm thick 32kg/m3 cotton board is better than that of a layer of 5cm thick 32kg/m3 cotton board. Transfer 24kg/m3 Glass wool board Make 1m long triangular section Wedge , Material Areal density Gradually increase, Average sound absorption coefficient It can be close to 1.^[1]

Novice on the road

Growth task Getting Started with Editing Edit Rule Edit by myself

I have questions

Content query Online Service Official post bar Feedback

Complaints and suggestions

Report bad information Failed to appeal through entries Complaint of infringement information Blocking query and unblocking

Jinggong Network Anbei No. 1100000200001