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Sound-absorbing damping coating

A technology of damping coatings and coatings, applied in the field of sound-absorbing damping coatings and indoor installation of sound-absorbing walls, to achieve good sound-absorbing effects

Inactive Publication Date: 2014-01-01
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The object of the present invention is to provide a sound-absorbing damping coating suitable for microporous metal sound-absorbing walls, which can well solve the problem of low-frequency noise absorption caused by microporous metal sound-absorbing walls. less effective problem

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  • Sound-absorbing damping coating

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Embodiment Construction

[0016] The specific embodiment of the present invention is as figure 1 shown.

[0017] A common microporous metal sound-absorbing wall is generally composed of a porous metal panel 1 , a non-porous metal plate 2 and an internal air cavity 3 surrounded by it. The microporous metal sound-absorbing wall has a good sound-absorbing effect on high-frequency noise, and has a certain sound-absorbing effect on intermediate-frequency noise, but there is a problem that the sound-absorbing effect on low-frequency noise is not good.

[0018] The embodiment of the present invention is: pour 30-35% of acrylic emulsion, 8-12% of water-based styrene-acrylic emulsion, and 2-5% of silicone into the stirring tank, add an appropriate amount of pure water, and fully stir until the components are in a uniform state , add aluminum fiber 5-15%, plasticizer 2-5%, and then fully stir evenly.

[0019] During the processing and assembly process of the microporous metal sound-absorbing wall, the coating...

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Abstract

A sound-absorbing damping coating comprises the following components in mass percentage: 30-40% of acrylic emulsion, 5-20% of aluminum fiber, 8-12% of aqueous styrene-acrylic emulsion, 3-5% of filler, 2-5% of silicone, 2-5% of plasticizer and the balance of pure water. The aluminum fiber added into the sound-absorbing damping coating is 20-500 microns in diameter and 1-30 mm in length. Duo to the addition of the aluminum fiber, the sound-absorbing damping coating has a good sound-absorbing effect, especially a good absorbing effect on low-frequency noises. The sound-absorbing damping coating is applied to the inner wall of a microporous metal sound-absorbing wall. When a sound wave enters the sound-absorbing wall, the coating layer can weaken the vibration of the metal panel wall, and absorb part of the vibration energy; the vibration energy is consumed in the coating layer in a viscoelastic state. More importantly, the coating layer rich in the aluminum fiber contains a large number of metal and non-metal micropores, so that the sound-absorbing damping coating has a good sound-absorbing effect on noises with different frequencies. Therefore, the sound-absorbing damping coating is applicable to a sound-absorbing wall installed indoors.

Description

[0001] technical field [0002] The invention relates to a sound-absorbing and damping coating, which belongs to the technical field of sound-absorbing protective coatings. Background technique [0003] In order to control the impact of noise generated by indoor equipment (transformers, air compressors, coal mills, etc.) on the environment, noise-absorbing devices such as sound-absorbing walls are generally installed indoors. Lightweight, good sound-absorbing effect, convenient installation, beautiful appearance and other advantages, it has been widely used. The microporous metal sound-absorbing wall has a good sound-absorbing effect on high-frequency noise, and has a certain sound-absorbing effect on intermediate-frequency noise, but there is a problem that the sound-absorbing effect on low-frequency noise is not good. [0004] At present, most of the existing sound-absorbing coatings are made of biological fibers, mineral fibers, etc. as the main raw materials combine...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/00C09D125/14C09D7/12
Inventor 徐锐梅重民伍发元邓永强周金泉
Owner STATE GRID CORP OF CHINA
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