A kind of pa56 film composite broadband sound-absorbing material and its preparation method and application

A sound-absorbing material and film composite technology, applied in the field of sound-absorbing materials, can solve problems affecting installation and use, too soft, large thickness, etc., and achieve the effect of increasing porosity, increasing bulkiness, and simple processing technology

Active Publication Date: 2021-04-16
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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  • A kind of pa56 film composite broadband sound-absorbing material and its preparation method and application
  • A kind of pa56 film composite broadband sound-absorbing material and its preparation method and application
  • A kind of pa56 film composite broadband sound-absorbing material and its preparation method and application

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 0.1mm. 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 la...

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Abstract

The invention discloses a PA56 film composite broadband sound-absorbing material, a preparation method and application thereof, and belongs to the technical field of sound-absorbing materials. The sound-absorbing material is composed of PA56 electrospun fiber film, PP melt-blown fiber layer, polyester needle-punched layer, PP melt-blown fiber layer, and PA56 electrospun fiber film from top to bottom. This product is composited with porous materials with different porosity and fiber diameter distribution to achieve high-efficiency and broadband sound-absorbing effect. This product is soft and fluffy, with good air permeability and light texture. It has excellent sound absorption effect especially at 3000-4000HZ. It can be widely used in automobile interior decoration, home decoration and other places where it is required. Good composite performance, simple processing technology, durable, low cost, the thickness can be adjusted from 10mm to 25mm according to different applicable environments, clean and environmentally friendly without peculiar smell, meeting the needs of the era of low-carbon environmental protection while meeting the sound absorption 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 Patents(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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