Soundproofing cotton Soundproof panels What is their working principle?

1.Sound-absorbing materials: blankets, wool, cotton wool, sound-absorbing cotton, sound-absorbing cotton beads, sound-absorbing cotton sheets, rock wool, glass wool, glass felt, etc.

2.Sound insulation materials: wood sound insulation board, ceramic sound insulation board, glass fiber sound insulation board, aluminum alloy sound insulation board, rock wool sound insulation board, sound weaving, sound absorbing cotton wall, polyurethane foam, polystyrene board, polyurethane foam board, etc.

3.Noise reduction materials: polyurethane noise reduction pads, sound-absorbing cotton boards, foam noise reduction boards, imitation leather noise reduction boards, wood noise reduction boards, ceramic noise reduction boards, cotton felt noise reduction boards, aluminum alloy noise reduction boards, rock wool noise reduction boards, foam film noise reduction boards, etc.

Abstract] Sound insulation and noise reduction materials [Question] 1Sound-absorbing materials: blankets, wool, cotton wool, sound-absorbing cotton, sound-absorbing cotton beads, sound-absorbing cotton sheets, rock wool, glass wool, glass felt, etc.

2.Sound insulation materials: wood sound insulation panels, ceramic sound insulation panels, glass fiber...

Dude, you seem to have asked this many times. Let me tell you about it. The soundproof cotton we often say is actually absorbing cotton, which is mainly used in sound absorption, and the sound insulation effect is not very good.

Sound-absorbing cotton mainly absorbs sound waves to prevent sound from resonating and affecting the effect of the sound source. The main purpose of the soundproof panel is to block the transmission of sound. Sound absorption is to improve the effect of the room, and sound insulation is afraid of affecting the outside world.

The two work best together.

Sound waves-absorbing air preaching.

The principle of the acoustic panel:

1. It is to block noise with sound insulation materials. There are a variety of sound insulation materials, such as solid bricks, reinforced concrete walls, woodblocks, gypsum boards, iron plates, soundproof felts, fiberboards, etc.

2. Strictly speaking, almost all materials have sound insulation, and the difference is that the volume of different materials is different. For the same material, due to the different areal densities, there is a relatively large change in the sound insulation of the same material.

3. The sound insulation follows the principle of the law of quality, that is, the greater the unit density of the sound insulation material, the greater the sound insulation volume, and the areal density is proportional to the volume of sound insulation.

4. The sound insulation board has the difference between air insulation sound and vibration sound. Air-acoustic acoustic panels, i.e. panels that block the sound that travels through the air. Vibrating acoustic panels are panels that block sound propagation in rigid components, such as reinforced concrete monolithic houses.

In first-tier cities, many friends will feel very noisy, especially those who live on both sides of the road, around the subway, and near the airport. Therefore, in order to create a quiet environment, most of my friends have installed soundproofing equipment at home. Among them, the most commonly used soundproofing equipment is soundproof cotton, soundproof panels and so on.

Soundproof cotton and soundproof board have a very good soundproof effect, but there are also differences between them, so some friends use soundproof panels at home, and some friends use soundproof cotton at home. So which is better, sound insulation cotton or sound insulation board? Let's talk about it next.

What is soundproofing cotton

Another function of soundproof cotton is heat insulation, which can reduce the heat transmitted to the surface of the hood when the engine is running, and the vehicle with the soundproof cotton on the hood will basically not produce white fog in rainy days. On rainy days and in winter, the difference between the outside air temperature and the engine temperature, as well as the combined effect of rain on the hood, will accelerate the oxidation of the paint surface. Thermal insulation cotton can protect the paint finish of the hood to a certain extent.

What is a soundproof panel

Ordinary objects have a soundproofing effect, but we call a plate with an average sound insulation volume of more than 30db (an infinite amount of material between the sound source and the measured point in an infinite space). Acoustic panels are generally made of high-density materials.

Which effect is better, sound insulation cotton or sound insulation panel

1. The sound insulation effect of sound insulation materials is proportional to the density of materials, such as steel plate and glass are better than gypsum board.

2. The use of multi-layer sound insulation materials has a better sound insulation effect than that of a single layer. Soundproof cotton is a figurative name, which actually refers to sound-absorbing materials. The common polyester fiber insulation cotton is the most used sound-absorbing material in the project, and the 5cm thick plate is generally selected in the partition wall.

Due to the different supply and marketing channels, there are pricing by weight and volume, which will not exceed 10 yuan per square meter. Partition wall method: choose 100 series partition wall keel, seal the paper gypsum board twice on one side (after the first sealing board, use putty caulking), sound insulation cotton is uniformly glued to one surface, the other side is left as a cavity, and after the partition wall is completed, other finishes are decorated.

Note that the soundproofing cotton should not be placed or filled at will, which will affect the soundproofing effect.

The above is to tell you about the difference between soundproof cotton and soundproof board, I hope you can better understand the soundproof cotton and soundproof board after reading. Sound insulation board is a high-density material, and the characteristics of sound insulation board are good weather resistance, beautiful appearance, good safety performance, and it is also more favorable. Sound-insulating cotton not only has a very good sound insulation effect, but also has a very good thermal insulation effect.

Soundproof cotton is mainly used in automobile technology. Therefore, based on the above, there are still many differences between soundproof cotton and soundproof panels.

Now many people's living room and room next to each other, sometimes want to stay quietly in the room or sleep, will always be noisy by the sound of the living room, Zheng and therefore, you need to buy some soundproofing materials for your room to add a layer of sound protection, soundproof cotton is one of the soundproof materials, today, I will introduce to you the principle of soundproof cotton.

First, the principle of sound insulation cotton.

1. Principle: When the sound wave propagates in a certain space (indoor or pipe) and is incident on the wall of the material, part of the sound energy will be reflected, and part of the sound energy will be absorbed (including transmission). It is precisely because of this sound-absorbing property of the material that the reflected sound energy is reduced, and the noise can be reduced by the segment scale.

2. Specific operation: the object vibrates to produce sound, the sound wave is transmitted in the air, and the cotton has a multi-fiber structure, the sound wave through the cotton through the reflection of countless fibers, superimposed on each other, collision, the sound wave energy is converted into heat energy, the sound wave intensity is weakened, and the sound disappears.

Second, the advantages and disadvantages of sound insulation cotton.

1. Advantages. Acoustic insulation foam is a high-performance sound-absorbing and noise-reducing material that minimizes vibration and resonance during use in chilled water and hot water pipes. The thermal conductivity is small, and it has excellent thermal insulation effect.

Low water absorption, closed bubble structure and dense skin make it difficult for water vapor to penetrate. Good flame retardancy, the material contains a large number of flame retardant smoke reduction raw materials, and does not melt in case of fire, and has the characteristics of self-extinguishing. It is easy to apply, neat and beautiful in appearance, environmentally friendly and healthy, and can also prevent mold growth.

2. Disadvantages. The raw material of soundproof cotton is made of asbestos. Asbestos is very harmful to the human body, because its fiber is very fine, and it is easy to cause a series of lung diseases after inhalation, and it has a certain incubation period, which will break out again through long-term accumulation, and this incubation time may be as long as one or twenty years.

Not only the room needs sound insulation, but also the kitchen, there are many kinds of sound insulation materials, and their advantages and disadvantages can be analyzed when choosing, and the advantages and disadvantages of sound insulation cotton have been listed for everyone, and you can understand it before choosing.

In big cities, the distance between buildings is very close, and there should be many friends who are affected by the noise of neighbors, shops, and restaurants. Therefore, it is necessary to do a good job of sound insulation; It is more important to choose the right soundproofing material. So, what is soundproof cotton?

Which is better, soundproof cotton or soundproof panels

1. What is soundproof cotton?

Acoustic insulation cotton is made of eco-friendly polyester fibers, which is an auxiliary material for indoor sound-absorbing systems. Filling the gap between the keels, the effect is very good, the construction is simple, and it is called: "sound-absorbing and sound-insulating artifact".

Another function of acoustic insulation is thermal insulation, which in the use of automobiles: it reduces the amount of heat transmitted by the engine to the surface cover. Vehicles equipped with sound-insulating cotton will not produce white fog when driving in rainy weather, and can also protect the painted surface of the hood to a certain extent.

2. What is a soundproof board?

Acoustic panels, as the name suggests, are panels that can isolate sound. In terms of practical effect, the acoustic insulation board can insulate more than 30db of the board on average, although it cannot completely isolate all the sound, but it can also reduce the sound to a great extent. Depending on the material and grade, the sound insulation effect is also different.

3. Which is better, sound insulation cotton or sound insulation board?

1. The actual sound insulation effect of the sound insulation board material is proportional to the density of the material, for example: the sound insulation effect of steel is better than that of gypsum board!

2. The use of sound insulation materials will be more significant than that of single layer. Soundproof cotton is the most used sound-absorbing material in engineering construction, and 5cm thick boards will be selected in the partition wall. Partition wall method:

Choose to use the 100 series partition wall keel, one side to make two covers, the sound insulation cotton is uniformly glued to the inside of one side, and the other side is left as a cavity, after the partition wall is completed, other decorations can be made on it. There is one thing that everyone should pay attention to: the soundproof cotton should not be placed at will or filled without permission, which will directly affect the effect of sound insulation.

3. Acoustic insulation board is a high-density material, and its most prominent features are: good resistance, beautiful appearance, very good safety performance, and it will not be very expensive. In addition to having a good sound insulation effect, it also has a very prominent thermal insulation effect.

And what is the whole content of soundproofing cotton. Acoustic panels and soundproof cotton have good sound insulation, mainly depending on the place of use. The implementation of "adapting measures to local conditions" can have a better sound insulation effect!

1. Soundproof cotton, also known as sound-absorbing cotton, is a kind of porous sound-absorbing material, the main component of which is cotton, which is not only light in weight, but also has good moisture-proof, corrosion-resistant and moisture-proof, and has the effect of sound absorption and noise reduction, and can also play the role of thermal insulation, which is the best material for building noise reduction and heat insulation.

2. Roof sound insulation is generally taken in the way of suspended ceiling, first of all, light steel keel should be used to build a shelf, and the light steel keel should be built into a small grid, and then the sound insulation cotton can be filled into each grid, it should be noted that a certain distance should be kept between the ceiling and the light steel keel, and the effect of slowing down noise transmission should be achieved through the air.