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PA56 film composite broadband sound absorption material, and preparation method and application thereof

A sound-absorbing material and membrane composite technology, applied in the field of sound-absorbing materials, can solve the problems of being too soft, thick, affecting installation and use, etc., and achieve the effects of increasing bulkiness, simple processing technology, and increasing porosity

Active Publication Date: 2019-11-26
吉林星源环保材料有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the foam material and the sound-absorbing layer with table-shaped protrusions have a good noise insulation effect, the overall superposition is too soft and the thickness is too large, which affects installation and use

Method used

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  • PA56 film composite broadband sound absorption material, and preparation method and application thereof
  • PA56 film composite broadband sound absorption material, and preparation method and application thereof
  • PA56 film composite broadband sound absorption material, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Such as figure 1 As shown, a PA56 film composite broadband sound-absorbing material, the sound-absorbing material is composed of PA56 electrospun fiber film 1, PP melt-blown fiber layer 2, polyester needle-punched layer 3, PP melt-blown fiber layer 4 from top to bottom , PA56 electrospun fiber membrane 5.

[0043] The PA56 electrospun fiber membrane on the top layer and the bottom layer is PA56 electrospun membrane after dissolving in formic acid / acetic acid system, and the electrospinning machine is jetted to form a PA56 electrospun membrane. The average pore size is 260nm, and a large number of nano spider webs can be seen under SEM. The average fiber diameter is 320 nm. The upper and lower film thicknesses are both 0.2mm. 2. The 4-layer PP melt-blown fiber layer is a mixture of melt-blown fiber and mechanical carding, laying and spinning. The thickness of the two layers of melt-blown fiber layer is 2mm, and its surface density is 500g / m 2 . The polyester needled ...

Embodiment 2

[0053] Such as figure 1 As shown, a PA56 film composite broadband sound-absorbing material, the sound-absorbing material is composed of PA56 electrospun fiber film 1, PP melt-blown fiber layer 2, polyester needle-punched layer 3, PP melt-blown fiber layer 4 from top to bottom , PA56 electrospun fiber membrane 5.

[0054] The PA56 electrospun fiber membrane on the top layer and the bottom layer is PA56 electrospun membrane formed by jetting through an electrospinning machine after PA56 is dissolved in a formic acid / acetic acid system. The average pore size is 200nm, and a large number of nano cobwebs can be seen under SEM. The average diameter of the fiber is 290nm, and the thickness of the two layers of film on the upper line is 0.3mm. 2. The 4-layer PP melt-blown fiber layer is a mixture of melt-blown fiber and mechanical carding, laying, and spinning. The thickness of the two melt-blown fiber layers is 3mm, and the surface density is 630g / m 2 . The polyester needled lay...

Embodiment 3

[0064] Such as figure 1 As shown, a PA56 film composite broadband sound-absorbing material, the sound-absorbing material is composed of PA56 electrospun fiber film 1, PP melt-blown fiber layer 2, polyester needle-punched layer 3, PP melt-blown fiber layer 4 from top to bottom , PA56 electrospun fiber membrane 5.

[0065] The PA56 electrospun fiber membrane on the top layer and the bottom layer is PA56 electrospun membrane formed by jetting through an electrospinning machine after PA56 is dissolved in a formic acid / acetic acid system. The average pore size is 170nm, and a large number of nano cobwebs can be seen under SEM. The average fiber diameter was 210 nm. The thickness of the two layers of film on the upper line is 0.1 mm. 2. The 4-layer PP melt-blown fiber layer is a mixture of melt-blown fiber and mechanical carding, laying and spinning. The thickness of the two layers of melt-blown fiber layer is 1.5mm, and its surface density is 320g / m 2 . The polyester needled l...

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Abstract

The invention discloses a PA56 film composite broadband sound absorption material, and a preparation method and an application thereof, and belongs to the technical field of sound absorption materials. The sound absorption material is formed by a PA56 electrospun fiber film, a PP melt-blown fiber layer, a polyester needled layer, a PP melt-blown fiber layer and a PA56 electrospun fiber film from top to bottom. The product is formed by compounding porous materials with different porosities and different fiber diameter distributions, so the efficient and broadband sound absorption effect is achieved. The product is soft and fluffy, has good air permeability and light texture, especially has an excellent sound absorption effect at 3000-4000 HZ, and can be widely applied to automobile interiordecorations and home decorations. The material has the advantages of good composite performance, simple processing technology, durability, low cost, adjustment of the thickness from 10 mm to 25 mm indifferent applicable environments, cleanness, environmental protection and no peculiar smell, and meets the needs of the time of low carbon and environmental protection while meeting the sound-absorbing performance.

Description

technical field [0001] The invention belongs to the technical field of sound-absorbing materials, and in particular relates to a PA56 film composite broadband sound-absorbing material and its preparation method and application. Background technique [0002] Environmental noise pollution is one of the four major elements of environmental pollution. According to statistics, environmental noise complaints account for 42.1% of the total environmental complaints in China. Environmental noise pollution damages human health and affects people's quality of life. And along with the increasingly perfect urban traffic network, the choice of people's means of transportation is increasing day by day, and the generation of a large amount of noises in the transportation process such as trains, automobiles, airplanes will obviously make passengers produce irritated emotions. At the same time, excessive noise will also affect the driver's attention, and the distraction of attention will gre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/02B32B27/36B32B27/32B32B27/34B32B27/12B32B3/24B32B33/00B32B37/02B32B37/06B32B37/10B32B37/15B32B38/18G10K11/162
CPCB32B3/266B32B5/022B32B5/06B32B5/08B32B5/26B32B33/00B32B37/02B32B37/06B32B37/10B32B37/153B32B38/1816B32B2250/20B32B2262/0253B32B2262/0261B32B2262/0276B32B2262/0284B32B2262/14B32B2305/20B32B2307/102B32B2605/08B32B2605/10B32B2605/18G10K11/162
Inventor 丁照轩王迎
Owner 吉林星源环保材料有限公司
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