Preparation method of high-strength porous sound absorbing material

A porous sound-absorbing, high-strength technology, applied in glass manufacturing equipment, manufacturing tools, glass molding, etc., can solve the problem of low utilization of blast furnace slag, achieve no secondary pollution, good comprehensive performance, and reduce accumulation Effect

Active Publication Date: 2018-09-14
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is particularly worth mentioning that the utilization of blast furnace slag in these two patents is relatively low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Add 40.5wt.% high-titanium blast furnace slow cooling slag, 50.5wt.% waste glass powder, 1wt.% AlN, 5wt.% borax. Ball mill and mix at a speed of 180r / min for 30min in a ball mill. Put it into a corundum crucible and send it to a resistance furnace for sintering. First, the temperature is raised to 400°C at a rate of 8°C / min and kept at a temperature of 20 minutes, and then raised to 1020°C at a rate of 10°C / min and kept at a temperature of 60 minutes for sintering. After sintering, cool down to 500°C at a rate of 25°C / s, and finally cool slowly to room temperature at a rate of 5°C / s to prepare a high-strength porous sound-absorbing material.

[0022] The volume density of the high-strength porous sound-absorbing material is 0.95g / cm 3 , The opening rate is 50.43%, the average pore diameter is 1.28mm, the compressive strength is 12.49MPa, and the average sound absorption coefficient is 0.29.

Embodiment 2

[0024] Add 39wt.% high-titanium blast furnace slow cooling slag, 52wt.% waste glass powder, 2wt.% AlN, 7wt.% borax. Ball mill and mix at a speed of 250r / min for 25min in a ball mill. Put it into a corundum crucible and send it to a resistance furnace for sintering. First, the temperature is raised to 400°C at a rate of 5°C / min and kept at a temperature of 20 minutes, and then raised to 1000°C at a rate of 10°C / min and kept at a temperature of 40 minutes for sintering. After sintering, cool to 500°C at a rate of 30°C / s, and finally cool slowly to room temperature at a rate of 4°C / s to prepare a high-strength porous sound-absorbing material.

[0025] The volume density of the high-strength porous sound-absorbing material is 0.96g / cm 3 , The opening rate is 53.62%, the average pore diameter is 0.88mm, the compressive strength is 16.64MPa, and the average sound absorption coefficient is 0.36.

Embodiment 3

[0027] Add 48wt.% high-titanium blast furnace slow cooling slag, 42wt.% waste glass powder, 4wt.% AlN, 6wt.% borax. Ball mill and mix at a speed of 300r / min for 30min in a ball mill. Put it into a corundum crucible and send it to a resistance furnace for sintering. First, the temperature is raised to 400°C at a rate of 8°C / min and kept at a temperature of 20 minutes, and then raised to 1020°C at a rate of 10°C / min and kept at a temperature of 60 minutes for sintering. After sintering, cool to 500°C at a rate of 28°C / s, and finally cool slowly to room temperature at a rate of 5°C / s to prepare a high-strength porous sound-absorbing material.

[0028] The volume density of the high-strength porous sound-absorbing material is 1.17g / cm 3 , The opening rate is 55.34%, the average pore diameter is 0.70mm, the compressive strength is 15.65MPa, and the average sound absorption coefficient is 0.39.

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Abstract

The invention aims at disclosing a method of preparing a high-strength porous sound absorbing material by taking high-titanium blast furnace slowly cooled slag as principal raw materials. The preparation method comprises mixing the high-titanium blast furnace slowly cooled slag and siliceous materials, adding in foaming agent and fluxing agent to obtain a mixed batch, and then ball-milling and directly putting the mixed batch into a container for sintering by a designated sintering process. The preparation method of the high-strength porous sound absorbing material improves the utilization rate of the high-titanium blast furnace slag and achieves reutilization of waste resources as well as environmental protection. The prepared high-strength porous sound absorbing material is excellent insound absorbing performance, low in cost, non-combustible, toxic-free, corrosion-resistant and capable of avoiding producing dust jeopardizing health during installation; meanwhile, compared with foamglass sound absorbing materials, the high-strength porous sound absorbing material is higher in strength and hopeful to be applied to traffic network sound barrier sound absorbing materials.

Description

technical field [0001] The invention relates to the field of building sound-absorbing materials, in particular to a high-strength porous sound-absorbing material and a preparation method thereof. Background technique [0002] In recent years, with the rapid development of my country's economic construction, the construction of traffic road network is also changing with each passing day, which greatly facilitates people's travel and material exchange. However, the noise pollution caused by the well-connected roads and a large amount of traffic flow has become increasingly prominent, which has become a major factor that interferes with people's work and rest and endangers their physical and mental health. At present, the more effective solution is to set up sound barriers on both sides of the road in order to achieve the purpose of sound absorption and noise reduction. Traditional sound barrier sound-absorbing materials such as fiber sound-absorbing materials have disadvantag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C11/00C03B19/06E01F8/00
CPCC03B19/06C03C11/007E01F8/00
Inventor 冯可芹严子迪
Owner SICHUAN UNIV
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