What types of sound absorbing materials can be divided into according to the principle of sound absorption?

For materials that absorb incident sound energy, sound-absorbing materials are mainly used to control and adjust indoor reverberation time, eliminate echoes, improve indoor listening conditions, reduce noise in noisy places, and improve living environment and working conditions (see sound absorption reduction noise); it is also widely used to reduce noise in ventilation and air conditioning ducts.

2021

12-28

How to choose sound absorbing material?

With the prosperity and hustle and bustle of the city, people's lives have begun to enrich, but for some street owners, they can't help but worry that how to reduce noise has become a topic of their concern. The emergence of sound-absorbing materials has solved this problem well, so which is better? Come and see today!

2021

12-28

What is the use of sound absorbing material? Where can it be applied?

Improve the sound insulation effect of thin walls. Such as gypsum board, calcium silicate board, FC board, TK board, fire-resistant magnesium cement board, etc., the interlayer can be filled with porous sound-absorbing materials such as glass wool, rock wool, mineral wool, etc., so as to improve the sound insulation effect of this board wall.

2021

12-28

You may not know the sound absorption mechanism of sound absorbing materials!

For materials that absorb incident sound energy, sound-absorbing materials are mainly used to control and adjust indoor reverberation time, eliminate echoes, and improve indoor listening conditions; they are used to reduce noise in noisy places and improve living environment and working conditions (see sound absorption reduction noise); it is also widely used to reduce noise in ventilation and air conditioning ducts.

2021

12-28

Sound absorption mechanism of sound absorbing materials

Flexible materials that absorb sound by resonance (e.g. closed-cell foam, absorbs mid frequencies), film-like materials (e.g. plastic film or cloth, canvas, linoleum and artificial leather, absorbs low and mid frequencies), plate-like materials (e.g. plywood, hardboard, asbestos) Cement boards, gypsum boards, etc. absorb low frequencies) and perforated boards (made by perforating various sheet materials or metal plates to absorb medium frequencies).

2021

12-27

What should I pay attention to when replacing the car seal?

Although the car weather strip is a small part in the body, it can ensure the stability and weight of the door opening and closing, and can also protect the car from wind, rain and dust, heat and sound insulation, and play the role of decoration at the edge of the door and window junction. Effect, when the body is subjected to vibration and deformation, the sealing strip also plays the role of buffering, shock absorption, and protecting the glass. Therefore, car maintenance is not a trivial matter, and any link cannot be ignored.

2021

12-27

How to maintain the car seal?

It is necessary to regularly check for cracks and breakages, and if you find a damaged car weather strip, you can find an adhesive to fix it. The adhesive here is a specially used adhesive so it's not difficult to repair the crack, if your crack is large or badly aged, you don't need to use the adhesive anymore, it's easier to replace it with a new one, the replacement method is very simple, but For good results, ask a professional to update it.

2021

12-27

Classification of car weather strips

The automobile sealing strip has the function of filling various intervals and gaps between the components of the body, and has the functions of shock absorption, waterproof, dustproof, sound insulation, decoration, etc., improving the comfort of the driving experience and protecting the body. So do you know what are the classifications of car weather strips?

2021

12-27

Types of vulcanization of EPDM

EPDM rubber is a copolymer of ethylene, propylene and a small amount of non-conjugated diene. The composition contains only unsaturated double bonds in the side chain, so it has excellent aging resistance such as ozone resistance, heat resistance and weather resistance. It can be widely used in automotive parts, waterproof materials for construction, wire and cable jackets, heat-resistant hoses, tapes, automotive seals and other fields.

2021

12-27

What should be followed in the selection of theater sound-absorbing materials?

The sound effect required by the theater is very perfect, so the selection of sound-absorbing materials in the theater should follow the rule that the reverberation time is controlled at about 1.5-2.8 seconds, and the specific reverberation time should be determined by the volume of the hall. Sound absorbing material should use appropriate sound absorbing material.

2021

12-27