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A kind of 3D sound-absorbing body and preparation method thereof

A 3D, polyester staple fiber technology, used in sound insulation, textiles and papermaking, building components, etc., can solve the problems of sound absorption effect, troublesome installation of sound absorption body, complicated production process, etc. Good sound effect, easy to recycle

Active Publication Date: 2015-10-28
JIANGSU BURGEREE NEW TECH MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing sound-absorbing body is cumbersome to install, complicated to operate, poor in sound-absorbing effect, and unattractive in decoration
The use of keels increases the workload of construction, and the effect of sound absorption will also be affected to varying degrees. The production process is complicated and requires multiple processes to complete

Method used

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  • A kind of 3D sound-absorbing body and preparation method thereof
  • A kind of 3D sound-absorbing body and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Such as figure 1 The 3D sound-absorbing body shown includes a first polyester staple fiber layer, the first polyester staple fiber and the second polyester staple fiber are evenly distributed in the first polyester staple fiber layer, and the melting point of the first polyester staple fiber is 180°C; the melting point of the second polyester staple fiber is 255°C. The thickness of the first polyester staple fiber layer is 4mm; the 3D sound-absorbing body is an open cuboid structure with a length and width of 700mm and a height of 40mm.

[0030] The mass ratio of the second polyester staple fiber to the first polyester staple fiber is 1:1.

[0031] Needle-punched holes are evenly distributed on the surface of the first polyester staple fiber layer, the aperture of the needle-punched hole is 1.8 mm, the depth of needle-punched is three-quarters of the thickness of the first polyester staple fiber layer, and the needle-punched density is 1.0 needles / cm 2 .

[0032] T...

Embodiment 2

[0040] The 3D sound-absorbing body includes a first polyester staple fiber layer, the first polyester staple fiber and the second polyester staple fiber are evenly distributed in the first polyester staple fiber layer, and the melting point of the first polyester staple fiber is 160°C; The melting point of the second polyester staple fiber was 258°C. The thickness of the first polyester staple fiber layer is 8mm; the 3D sound-absorbing body is an open cuboid structure with a length and width of 800mm and a height of 80mm.

[0041] The mass ratio of the second polyester staple fiber to the first polyester staple fiber is 1:1.5.

[0042] Needle-punched holes are evenly distributed on the surface of the first polyester staple fiber layer, the aperture of the needle-punched hole is 1.5 mm, the depth of needle-punched is 4 / 5 of the thickness of the first polyester staple fiber layer, and the needle-punched density is 1.2 needles / cm 2 .

[0043] The preparation method of the abo...

Embodiment 3

[0051] The 3D sound-absorbing body includes a first polyester staple fiber layer, the first polyester staple fiber and the second polyester staple fiber are evenly distributed in the first polyester staple fiber layer, and the melting point of the first polyester staple fiber is 180°C; The melting point of the second polyester staple fibers was 260°C. The thickness of the first polyester staple fiber layer is 8mm; the 3D sound-absorbing body is an open cuboid structure with a length and width of 900mm and a height of 80mm.

[0052] The mass ratio of the second polyester staple fiber to the first polyester staple fiber is 1:2.3.

[0053]Needle-punched holes are evenly distributed on the surface of the first polyester staple fiber layer, the aperture of the needle-punched hole is 1.5 mm, the depth of needle-punched is 4 / 5 of the thickness of the first polyester staple fiber layer, and the needle-punched density is 1.1 needles / cm 2 .

[0054] The preparation method of the abo...

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Abstract

The invention discloses a 3D sound absorption member and a preparation method thereof. The 3D sound absorption member comprises a first polyester staple fiber layer, wherein pricked holes are uniformly formed in the surface of the first polyester staple fiber layer; the diameter of each pricked hole is not lager than 2 mm; the pricking depth is larger than two thirds of the thickness of the first polyester staple fiber layer; and the pricking density is 1.0-1.5 needles / cm<2>. According to the 3D sound absorption member and the preparation method thereof, the polyester staple fibers are taken as raw materials; when the first polyester staple fiber layer is melted, the fibers are boned together, so that the 3D sound absorption member material is environment-friendly, doesn't release hazardous substances, and can be recycled; the 3D sound absorption member is attached onto a wall and can form a cavity with the wall body, keels are omitted, the vibration transmission of sound is reduced, and sound absorption and noise lowering effects can be well realized; and the material of the 3D sound absorption member is environment-friendly and easy to recycle, the prepared 3D sound absorption member has a good sound absorption effect, and particularly for low-frequency sound, the sound absorption effect is improved remarkably.

Description

technical field [0001] The invention relates to a 3D sound-absorbing body and a preparation method thereof, belonging to the field of building material components and construction. Background technique [0002] Ordinary sound-absorbing systems are generally composed of traditional sound-absorbing fiber materials and soft foam plastics as the core layer, and metal or non-metallic materials as the skeleton or surface layer. They are widely used in architectural decoration and stadium construction. [0003] The existing sound-absorbing body is cumbersome to install, complicated to operate, poor in sound-absorbing effect, and unattractive in decoration. The use of keels increases the workload of construction, and the effect of sound absorption will also be affected to varying degrees. The production process is complicated and requires multiple processes to complete. Contents of the invention [0004] The object of the present invention is to provide a 3D sound-absorbing body ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04B1/84D04H1/4382D04H1/485
Inventor 左百川相增辉
Owner JIANGSU BURGEREE NEW TECH MATERIALS
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