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Preparation method of acoustic material

A technology of sound-absorbing materials and warp and weft yarns is applied in the field of preparation of high-strength sound-absorbing materials, which can solve the problems of weak mechanical strength, easy burning and aging resistance, and achieve high-efficiency sound-absorbing effect, compact structure and good integrity.

Inactive Publication Date: 2018-05-15
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Foam materials and natural straw composite materials have the disadvantages of being easy to burn and not resistant to aging, although the cost is low and the performance is good.
Porous wooden structures and non-woven fabrics also have defects such as high cost, general performance and weak mechanical strength.

Method used

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  • Preparation method of acoustic material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1: A polyester fiber sound-insulating fabric

[0024] Such as figure 1 As shown, the sound-absorbing material of this embodiment is composed of warp yarn 1, weft yarn 2 and binding yarn 3. Warp yarn 1 and weft yarn 2 are perpendicular to each other and located in the same plane, and binding yarn 3 is located in a plane perpendicular to the plane where warp yarn 1 and weft yarn 2 are located. The sound-absorbing material is a three-dimensional structure containing three layers of warp yarns 1 and four layers of weft yarns 2. The thickness of each layer of weft yarns 2 decreases sequentially from top to bottom; the thickness of each layer of warp yarns 1 remains unchanged; the diameter of each layer of binding yarns 3 Keeping the same, since the thickness of each layer of weft yarn 2 decreases sequentially from top to bottom, a gradual void 4 is formed in the thickness direction of the fabric.

[0025] Select the polyester filament bulky yarn with a fineness of ...

Embodiment 2

[0032] Example 2: High Strength Fiberglass Acoustic Absorbing Fabric

[0033] Such as figure 1 As shown, the sound-absorbing material of this embodiment is composed of warp yarn 1, weft yarn 2 and binding yarn 3. Warp yarn 1 and weft yarn 2 are perpendicular to each other and located in the same plane, and binding yarn 3 is located in a plane perpendicular to the plane where warp yarn 1 and weft yarn 2 are located. The sound-absorbing material is a three-dimensional structure containing three layers of warp yarns 1 and four layers of weft yarns 2. The thickness of each layer of weft yarns 2 decreases sequentially from top to bottom; the thickness of each layer of warp yarns 1 remains unchanged; the diameter of each layer of binding yarns 3 Keeping the same, since the thickness of each layer of weft yarn 2 decreases sequentially from top to bottom, a gradual void 4 is formed in the thickness direction of the fabric.

[0034] Choose fiberglass bulked yarn with a fineness of 10...

Embodiment 3

[0041] Example 3: High Strength Fiberglass Acoustic Absorbing Composite

[0042] Step 1, adopt the method of Example 2 to prepare high-strength glass fiber acoustic wave absorbing fabric.

[0043] In step 2, the fabric obtained in step 1 is immersed in an acetone solution of epoxy resin (Guangzhou Hengyue Chemical Co., Ltd., brand: E-51) with a mass ratio concentration of 50%, and it is taken out after standing for 10 minutes.

[0044] Step 3: put it in an oven for curing, heat at 85 degrees Celsius to compound the sound-absorbing material with epoxy resin, take it out after heating for 8 hours, and obtain a composite material based on high-strength glass fiber sound-absorbing fabric. According to tests, the tensile strength of the composite material is 880MPa, which can reduce the noise intensity from 70 decibels to 47 decibels.

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Abstract

The invention provides a preparation method of an acoustic material, which is characterized by including steps of applying a three-dimensional weaving technology, and weaving warp and weft yarns and binding yarns to be a three-dimensional fabric structure with holes capable of reflecting and absorbing sound wave on the thickness direction to obtain the acoustic material. The high-intensity composite acoustic material is compact in structure, high in intensity and good in integrity; the fabric surface has holes with gradually varied gradients, thus reflection and absorption of sound wave for many times can be formed.

Description

technical field [0001] The invention relates to the field of new materials, and belongs to a preparation method of high-strength sound-absorbing materials. Background technique [0002] In recent years, the rapid development of science and technology and industry has brought comfort and convenience to people's lives. It also has some negative impacts on the environment. Various data show that sound wave pollution has had a great impact on people's life and health. [0003] However, in most cases, sound waves will produce reflection or diffuse reflection when they touch the surface of an object, and multiple sound waves will converge together to form noise. The ideal sound wave absorbing material should have the characteristics of light weight, high strength, good sound absorption effect and non-flammability. At present, people use porous materials as sound insulation materials for construction or transportation. The sound wave energy is converted into vibration energy or ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D03D25/00D03D1/00D03D15/00B29C70/24D03D15/217D03D15/283D03D15/292D03D15/40D03D15/43
CPCD03D1/00D03D15/00D03D25/005B29C70/24D10B2331/02D10B2331/04D10B2201/02D10B2201/01D03D15/49D03D15/43
Inventor 许福军张芹刘晓华邵怡沁应芷欣宫浩
Owner DONGHUA UNIV
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