Last price elevator shaft acoustic panels

 Grand County Xinghui insulation material factory production of elevator shafts acoustic panels are specifically designed for the elevator shaft, room design and production of insulation material, the core material is yellow wool fibers, glass wool as a long-term widely used in the world of acoustic materials, and is proved to have excellent absorption properties, and excellent fire resistance, sound absorption surface of the composite particles. The main role is to enhance the absorption effect, but also easy to install. Elevator shaft convex shape type acoustic panels, this particular structure increases the effective absorption area, while changing the reflection effect, sound noise reduction coefficient NRC = 0.75, is mainly applied to the elevator shaft, elevator machine room, computer room air conditioning the specific structure of the various types of sound absorption treatment. And non-toxic, is the real green sound absorption decorative plates. Sound-absorbing acoustic foam inside the elevator shaft principle fluffy fiber staggered, there are a lot of tiny pores, is typical of porous sound-absorbing material, has good acoustic properties. Centrifugal glass wool can be made into wall, ceiling, space absorber, etc., can be a lot to absorb sound energy in the room, reducing reverberation time, reduce interior noise. Elevator shafts are porous sound-absorbing material absorbing cotton, with good acoustic performance. Absorbing glass wool can not due to the surface roughness, but because a large number of fine pores and communicating the inner and outer holes. When a sound wave is incident on the glass wool, the acoustic energy down into the pores within the material, causing the vibration of air molecules in the air gap. Due to viscous resistance of air and the air molecules and the pore wall friction, and the sound energy into heat loss. Sound absorption performance of the elevator shaft and installation of sound-absorbing cotton is also closely related to the condition. Similarly when the elevator shaft behind the sound-absorbing cotton board air layer thickness with the same elevator shaft without air layer absorbent cotton absorption effect. Especially in the low-frequency sound absorption performance than the real material posted on hard ground surface is significantly increased, the absorption coefficient increases with increasing thickness of the air layer, but to a certain value of the effect is not obvious. Using different density of glass wool and stacked together to form a bulk density increases in the form, you can get a greater sound absorption effect. For example, 2.5cm thick layer of cotton board 24kg/m3 and 32kg/m3 layer 2.5cm thick cotton panels stacked together sound absorption and better than 5cm thick layer of cotton board 32kg/m3. Usually within a public gymnasium, KTW hall, workshops and other large space, in order to sound absorption, is the use of the elevator shaft of the main sound-absorbing material absorbing cotton. Absorption coefficient absorption coefficient acoustic board material, according to GB/T20247-2006ISO 354:2003 "sound-absorbing acoustic reverberation chamber measurement" noise reduction coefficient: NRC = 0.85, its sound absorption performance of an attractive structure. (NBR ≥ 0.85) Frequency / HZ 100 125 160 200 250 315 400 500 630 a NBR absorption coefficient 0.38 0.48 0.51 0.84 0.86 0.82 0.92 0.87 0.80 0.77 0.85 Frequency / HZ 800 1000 1250 1600 2000 2500 3150 4000 5000 a NBR absorption coefficient 0.81 0.80 0.76 0.86 0.87 0.87 0.85 0.80 0.76 0.77 0.85 a1, for the 100-5000HZ average absorption coefficient. a2, NBR as a noise reduction coefficient is 250,500,1000,2000 HZ 4 octave band sound absorption coefficient of the arithmetic mean of goods. Principles of sound-absorbing panels for the construction elevator shaft inside the card can be directly used special nails, simple installation, construction efficiency is very high, and the product can also be composed with other wall materials, soundproof wall or ceiling insulation main purpose is mainly applied to all types of sound absorption in a particular structure elevator shaft, elevator machine room, computer room air conditioning noise reduction processing. And non-toxic, is the real green sound absorption decorative plates Tel; 15383066111 - 15133666131 Sales Hotline; 0316-5195906 0316-5195228 0316-3281818