What are the sound insulation materials?
sound boarding
Sound insulation board is a common sound insulation material in daily life. Its manufacturing process is to use high-strength gypsum core, and then increase the bubble content. Due to the increase of bubble content, its toughness and density also increase, thus achieving sound insulation effect. The sound insulation board has excellent sound insulation effect and is harmless to human body. This is a green and harmless material. The most important sound insulation material is the sound insulation effect. Bian Xiao learned that a sound insulation board can block the volume of 30-40db on average, and it is ultraviolet resistant, heat resistant, easy to install and cheap.
Sound insulation cotton
The production process of sound insulation cotton is also very unique, and the effect of sound insulation is achieved by using the infiltration consumption of glass fiber. When the sound propagates and penetrates, it consumes a lot in the process of entering the sound insulation cotton, and more sound is converted into heat energy, which can not only sound insulation but also heat preservation. It is also widely used, non-toxic, harmless and has no side effects. It is more suitable for use in the south of China, because it can insulate heat in summer and keep warm in winter.
Sound insulation pad
The sound insulation material is similar to sound insulation cotton. The sound insulation pad is made of high-quality cotton products with closed-cell structure, which can effectively buffer the spread of sound during use. Besides sound, there are some moisture and dust that can be isolated. It can well isolate the sound, prevent the reflection of indoor sound, and achieve the effect of reducing noise. The most important thing is that it can be flame retardant, so the sound insulation pad can still play a certain role in the event of a fire, which is very popular with consumers.
What kind of sound insulation material is best?
The materials just introduced in the above small series are all good sound insulation materials, but the sound insulation board is the best one. There must be a reason why it can be the most used sound insulation material. First, the installation is relatively simple. Xiaobian has already introduced the effect after installation, and the appearance is also very beautiful. The price is between 60-400 yuan per square meter, which is relatively affordable. Some friends think that the sound insulation pad is the best sound insulation material, but in fact, the sound insulation pad needs to be removed and a dragon skeleton is built for installation. Bian Xiao thinks that it needs a lot of manpower and material resources or that the sound insulation board is simple and convenient.
Differences in sound insulation materials
The sound absorption material has little reflection on the incident acoustic energy, which means that the acoustic energy can easily enter and penetrate this material; This material is porous, loose and breathable, and it is a typical porous sound absorption material. Technically, fibers, particles or foam materials are usually used to form porous structures. The structural feature is that the material has a large number of interconnected micropores from the surface to the inside, that is, it has certain air permeability. When sound waves are incident on the surface of porous materials, the air in micropores vibrates. Due to friction resistance, air viscous resistance and heat conduction, a considerable part of acoustic energy is converted into heat energy, thus playing a sound absorption role.
Sound insulation materials cannot be porous, loose and breathable like sound absorption materials, but should be thick and dense, such as steel plates, lead plates, brick walls and other materials. Sound insulation materials shall be dense, without pores and gaps; It's very heavy. Because this kind of sound insulation material is dense, it is difficult to absorb and transmit sound energy, but the reflected energy is strong, so the sound absorption performance is poor.
The appearance of shock absorbing materials greatly reduces the time for space sound to generate vibration and noise, so it is represented by shock absorbers and shock absorbing hooks.
In engineering, sound absorption treatment, sound insulation treatment and shock absorption treatment have different goals and emphases. The goal of sound absorption treatment is to reduce the repeated reflection of sound in the room, that is, to reduce the reverberation sound in the room and shorten the duration of reverberation sound, that is, reverberation time; In the case of continuous noise, this attenuation is manifested as the reduction of indoor noise level, which is aimed at sound sources and sound-absorbing materials in the same building space. The sound-absorbing material also absorbs the sound from the adjacent room, which is equivalent to improving the sound insulation effect of the enclosure structure. Damping materials play an indispensable auxiliary role.
The key point of sound insulation treatment is to isolate the transmission of noise from the sound source room to the adjacent room, so that the adjacent room is not disturbed by noise.
Today, with the development of industrial level, people need a comfortable night environment, so it is very important for them to relax and enjoy sleeping soundproof materials. Therefore, Bian Xiao thinks that sound insulation materials are very important and every family must choose sound insulation materials.
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