Environmentally friendly sound-absorbing cotton is a kind of man-made inorganic fiber. The materials used in the production mainly include polyester fiber environmental protection materials, etc., and certain raw materials such as borax and soda ash must be included in the production process. When the raw material is melted and blown into fibers, the fibers are intertwined with each other and form a three-dimensional intersecting structure with tiny gaps between them. Sound-absorbing cotton is generally used in theaters, theaters, KTV, recording studios and other places, and it replaces glass wool and rock wool for the interval between light walls.

The main advantages are: environmental protection, high strength, waterproof, moisture-proof, tasteless, very simple processing technology and long life; not easy to rot, strong resistance to corrosion by some fungi, salt or other chemicals; during processing No adhesives are added; 100% recyclable, it is an absolutely environmentally friendly material. Many people think that sound-absorbing cotton and sound-insulating cotton are the same material, but they are actually different. The sound insulation principle of sound insulation cotton is: after the vibration produces sound, the sound wave will be transmitted through the air, and the structure of the sound insulation cotton is fiber, the sound waves collide and superimpose each other after being reflected by the fibers in the sound insulation cotton, and the sound wave energy is converted into heat energy to weaken the sound wave intensity , and eventually the sound disappears. The main function of the sound insulation cotton: good waterproof performance, good sound insulation effect, the metal fatigue of the car chassis can be effectively reduced, and it can also play the role of heat preservation, and play a certain role in protecting the car paint on the surface of the hood.

Environmentally-friendly sound-absorbing cotton and sound-insulating cotton are actually different. Environmentally-friendly sound-absorbing cotton is mainly used for noise reduction. During the sound-absorbing process, sound energy is converted into heat energy. Sound-proof cotton blocks sound transmission. The disadvantage is that it is prone to sound energy reflection. If the sound insulation material is of good quality, it can play a very good sound insulation effect, that is, it can eliminate noise very well. For example, gradient sound-absorbing cotton is a material with a stepped density. There are many holes inside, and the holes are connected to each other. , if there is noise entering, it will collide and rub against the material, and finally achieve the purpose of attenuating the sound energy. If you attach sound insulation cotton to the glass, you can basically achieve a better sound insulation effect.

There are two main types of environmentally friendly sound-absorbing cotton, the first is polyester fiber sound-absorbing cotton, and the second is glass fiber sound-absorbing cotton, which are basically the same in terms of attraction effect, but glass fiber is not environmentally friendly, and it will feel itchy if it touches the skin. Construction is very inconvenient. The disadvantage of polyester fiber is that its fire resistance is poor, or it does not have any fire protection function. Once a fire accident occurs, the consequences will be very serious. Therefore, when purchasing sound-absorbing cotton, it is necessary to combine the actual site and the actual situation. If it is a relatively closed place such as an underground karaoke hall, polyester fiber sound-absorbing cotton cannot be used, otherwise the chance of escaping from a fire will be very small.

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