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An ultra-microporous ceramic sound-absorbing barrier and its manufacturing method

A manufacturing method and ultra-microporous technology, applied in the direction of ceramic products, manufacturing tools, ceramic molding machines, etc., can solve the problem of installation and fixing structures without further consideration of on-site construction needs, comprehensive performance can not meet the sound absorption performance and strength at the same time, very difficult Difficult drilling and other mechanical processing problems, to achieve the effect of convenient material transportation, excellent noise reduction function, and excellent acoustic absorption performance

Inactive Publication Date: 2016-03-02
陈松
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, when the existing ceramic sound-absorbing materials meet relatively high sound-absorbing performance, due to the porosity requirements, the strength has a large attenuation, and it is difficult to perform drilling and other mechanical processing, and its comprehensive performance cannot meet the high-speed railway sound barrier at the same time. Various requirements for sound absorption performance and strength
[0008] The sound barrier research has not only made great progress in the selection of material properties, but also in-depth research on the sound barrier structure. The existing sound barrier structures mostly use a single metal material or inorganic non-metallic material structure, and the layout is not based on the high-speed railway. The design is based on the characteristics, and the installation and fixed structure did not further consider the needs of on-site construction, nor did it combine the continuous development of new materials for comprehensive technical exploration to meet the higher requirements of noise control.

Method used

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  • An ultra-microporous ceramic sound-absorbing barrier and its manufacturing method
  • An ultra-microporous ceramic sound-absorbing barrier and its manufacturing method
  • An ultra-microporous ceramic sound-absorbing barrier and its manufacturing method

Examples

Experimental program
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Effect test

Embodiment 1

[0070] Prepare according to the following material parts by mass:

[0071] 8.93 parts of water, 22.32 parts of PVA (10%) aqueous solution, 26.79 parts of composite sol, 13.39 parts of alumina fiber (diameter 3 ) 20.09 parts, sodium tripolyphosphate 0.50 parts.

[0072] Glaze layer components: 2.50 parts of cerium oxide, 6.50 parts of lanthanum oxide, 12.0 parts of glass powder, 4.50 parts of calcium carbonate, 29.70 parts of silicon dioxide, 15.60 parts of aluminum oxide, 22.40 parts of boric acid, and 6.80 parts of titanium dioxide.

[0073] Process: 1. Slurry preparation: firstly adjust PVA into 10% aqueous solution, then mix it with water, surfactant and alumina fiber, and disperse at high speed (1500 rpm) for 20-60 minutes to obtain fibers containing a lot of foam Then add composite sol and stir at high speed for about 10 minutes to make it evenly mixed, then add fumed silica and zirconia, stir at high speed for 10-30 minutes, and finally add expanded perlite and mix for 5...

Embodiment 2

[0078] Prepare according to the following material parts by mass:

[0079] 21.05 parts of PVA (10%) aqueous solution, 31.58 parts of composite sol, 19.39 parts of mullite fiber, 7.66 parts of cerium oxide, and 20.32 parts of molecular sieve.

[0080]Glaze layer components: 2.50 parts of cerium oxide, 6.50 parts of lanthanum oxide, 12.0 parts of glass powder, 4.50 parts of calcium carbonate, 29.70 parts of silicon dioxide, 15.60 parts of aluminum oxide, 22.40 parts of boric acid, and 6.80 parts of titanium dioxide.

[0081] Process: 1. Slurry preparation: firstly adjust PVA into a 10% aqueous solution, then mix it with mullite fiber, disperse at high speed (1500 rpm) for 20-60 minutes, obtain a fiber slurry containing a large amount of foam, add composite sol Stir at high speed for about 10 minutes to make it evenly mixed, then add cerium oxide and molecular sieve, stir at high speed for 10-30 minutes to form a uniform slurry. 2. Injection molding: inject the slurry into the m...

Embodiment 3

[0086] Prepare according to the following material parts by mass:

[0087] 11.46 parts of water, 18.35 parts of PVA (10%) aqueous solution, 28.78 parts of composite sol, 12.25 parts of quartz fiber, 2.32 parts of cerium oxide, 3.30 parts of yttrium oxide, 4.82 parts of fumed silica (R972), expanded perlite (particle size 0.6 -1.3mm, density 80-90kg / m 3 ) 12.32 parts, polylight ball (diameter 0.5-2mm, density 0.03-0.07) 0.60 parts, sawdust 5.80 parts, sodium tripolyphosphate 0.30 parts.

[0088] Glaze layer components: 2.50 parts of cerium oxide, 6.50 parts of lanthanum oxide, 12.0 parts of glass powder, 4.50 parts of calcium carbonate, 29.70 parts of silicon dioxide, 15.60 parts of aluminum oxide, 22.40 parts of boric acid, and 6.80 parts of titanium dioxide.

[0089] Process: 1. Slurry preparation: first make PVA into 10% aqueous solution, then mix it with water, surfactant and quartz fiber, disperse at high speed (1500 rpm) for 20-60 minutes, and obtain fiber slurry contain...

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Abstract

The invention discloses a super-microporous ceramic sound absorption barrier and a manufacturing method of the super-microporous ceramic sound absorption barrier. The super-microporous ceramic sound absorption barrier comprises sound absorption boards and back boards, wherein the sound absorption boards and the back boards are installed and fixed between every two adjacent supporting rib columns. Hollow structures are formed between the sound absorption boards and the back boards. The sound absorption boards are microporous ceramic composite boards with a disorderly communicated three-dimensional mesh hole structure and are sintered after being glazed. The invention further discloses compositions of the sound absorption boards and the manufacturing method of the sound barrier. The manufacturing method includes the steps of slurry preparation, injection molding, sintering, glazing sintering and forming. By the adoption of the three-layer hollow structure of the sound absorption barrier, sound absorption and noise reduction capacity is further enhanced; the sound absorption boards are made of the microporous ceramic composite boards, so that the sound absorption boards have the excellent noise reduction function, and the microporous ceramic composite boards have better machining performance. The sound barrier has better sound absorption performance, is high in sound absorption coefficient, wide in sound absorption frequency band and good in low frequency sound absorption effect, and the noise frequency division treatment effect is remarkable. The prefabricated structure of the sound barrier is convenient to machine and install, and construction efficiency is high.

Description

technical field [0001] The invention belongs to the technical field of preparation of railway line equipment, in particular to the technical field of preparation of railway sound-absorbing barriers, in particular to an ultra-microporous ceramic sound-absorbing barrier applied to high-speed railway sound-absorbing materials and a manufacturing method thereof. Background technique [0002] The sound barrier is a facility inserted between the sound source and the receiver, which can make the sound source transmission have a significant additional attenuation, thereby reducing the noise impact in a certain area where the receiver is located. The sound-absorbing material used in the sound barrier of high-speed railway is firstly that its sound-absorbing performance should meet the structural design requirements of the sound barrier, and its noise reduction coefficient NRC>0.5. At the same time, the sound-absorbing material used outdoors should also have good mechanical properti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01F8/00C04B35/80C04B38/06B28B1/26
Inventor 陈松
Owner 陈松
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