1. The Introduction of Sound Insulation Board
Sound insulation Board
In theory, the general objects have sound insulation effect, but the average sound insulation
quantity exceeds 30dB plate is referred to sound insulation board. Sound insulation board is
generally a high density material. Sound is wave energy, and it needs medium to spread.
When voice being spread in the same medium, the larger medium density is, the faster the
spread is. As in normal temperature air velocity of approximately 340 m / s, the track of the
propagation speed of approximately 5200 M / s.. The sound of another transmission is the
cross media. At this time, sound energy transfer is the essence of the amplitude of the
vibration transmission. When crossing media, two media density difference is larger, and this
will cause more acoustic energy loss. But in the practical application, the air is in human
normal activity space, so with the air density is greater material is generally very high density
material, and it can be regarded as sound insulation material. The higher density, the better
sound insulation effect is. This kind of material called the sound insulation board. The sound
insulation board cannot has all frequency sound energy barrier, because object has a natural
resonance frequency which is close to the resonance frequency of the object, so the sound
insulation board insulation effect will be reduced. Sound insulation board with airborne sound
insulation and vibration sound distinction. Airborne sound insulation board, namely the barrier
is in the airborne sound board. Vibration sound insulation board barrier is in the rigid member
(such as reinforced concrete integral building) in propagation of sound board and system.
The Main Characteristics of Sound Insulation Board
Sound insulation board main features: to ensure sound absorption, sound insulation effect
under the premise. Its characteristics include simple production, simple installation, city track
traffic noise barrier, the highway noise barrier, indoor sound barrier, air conditioning and
mechanical noise barriers.
The Time of Sound Insulation Board Can Keep
There are some sound insulation boards in two pieces of sheet in the market that is installed
between the rubber layer, the damping material or deadening felt made, by using this

2. method, in the short term to a certain extent to improve the sound insulation effect, but its
sound insulation effect will be reduced gradually with time. We can find sound absorption
panels in many places. As everyone knows, rubber and other materials in the air will
gradually aging, causing it to become hard and loss of elasticity. Thereby causing the sound
insulation effect with time and reduce gradually. On the other hand, the two plates are
arranged in the middle of the rubber layer or deadening felt layer approach, so the project
cost is very high.
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