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Sound absorbing material with tail gas clean-up function and preparation method thereof

A technology for sound-absorbing materials and exhaust gas purification, applied in the field of sound-absorbing materials, can solve the problems of lack of sound-absorbing effect, scattering of sound-absorbing materials, environmental pollution, etc., and achieve the effects of less acid exhaust gas corrosion, improved sound-absorbing effect, and high strength.

Active Publication Date: 2016-05-04
SICHUAN AEROSPACE TUOXIN BASALT IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of fiber has a solid cylindrical structure, and the fiber bundle is made into a flocculent puffed fiber group by applying a treatment procedure such as air injection. Due to the limitation of the puffing process, this type of sound-absorbing material itself does not have a good sound-absorbing effect.
Moreover, the above-mentioned sound-absorbing materials are easily damaged by the impact of high-speed and high-temperature exhaust gas and scattered to the outside, resulting in new environmental pollution.
Since most of the exhaust gas remains acidic gases such as nitrogen oxides and sulfur oxides, it is also a great challenge to the corrosion resistance of sound-absorbing materials

Method used

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  • Sound absorbing material with tail gas clean-up function and preparation method thereof
  • Sound absorbing material with tail gas clean-up function and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] First, comb the continuous basalt fiber into fiber bundles, wash off the sizing agent on the surface with acetone, then rinse the acetone with water and dry it for later use;

[0041] Then, the washed continuous basalt fiber was acid-etched in 1.0 mol / L HCl solution at a temperature of 60° C. for 2 hours, and then rinsed with hydrochloric acid.

[0042] Finally, the acid-etched continuous basalt fiber was calcined at 350° C. for 4 hours, and the temperature was lowered to obtain activated continuous basalt fiber, that is, the sound-absorbing material with exhaust gas purification function.

[0043] The specific properties of the sound-absorbing material with tail gas purification function obtained in this embodiment are shown in Table 1:

[0044] Table 1 Performance parameters of sound-absorbing materials with exhaust gas purification function

[0045] project

Embodiment 2

[0047] First, comb the continuous basalt fiber into fiber bundles, wash off the sizing agent on the surface with styrene, then rinse the styrene with water and dry it for later use;

[0048] Then, wash the continuous basalt fiber at a concentration of 0.5mol / LH 2 SO 4 After acid etching for 1.5 hours at a temperature of 60°C in the solution, rinse the sulfuric acid with water

[0049] Finally, the acid-etched continuous basalt fiber was calcined at 400° C. for 3.5 hours, and the temperature was lowered to obtain activated continuous basalt fiber, that is, the sound-absorbing material with exhaust gas purification function.

Embodiment 3

[0051] First, comb the continuous basalt fiber into fiber bundles, wash off the sizing agent on the surface with acetone, then rinse the acetone with water and dry it for later use;

[0052] Then, the washed continuous basalt fiber was acid-etched in 2.0 mol / L acetic acid solution at a temperature of 60° C. for 3 hours, and then rinsed with acetic acid with water.

[0053] Finally, the acid-etched continuous basalt fiber was calcined at 300° C. for 5 hours, and the temperature was lowered to obtain activated continuous basalt fiber, that is, the sound-absorbing material with exhaust gas purification function.

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Abstract

The invention relates to a sound absorbing material with tail gas clean-up function and a preparation method thereof. The preparation method comprises the following step: by using continuous basalt fibers as a raw material, carrying out acid etching and high-temperature activation to modify the continuous basalt fibers. The method is simple and easy to operate. The sound absorbing material prepared by the preparation method has the advantages of high impact resistance, high temperature resistance, high acid resistance, favorable sound absorbing property and the like, and has the tail gas clean-up function.

Description

technical field [0001] The invention relates to the field of sound-absorbing materials, in particular to a preparation method of a sound-absorbing material with tail gas purification function and the sound-absorption material with tail gas purification function prepared by the preparation method. Background technique [0002] Sound-absorbing materials refer to materials that have the function of reducing noise pollution, and are specifically used in indoor places and open-air venues with high requirements on the acoustic environment, as well as inside / outside machinery with high requirements on noise reduction. For the exhaust pipe sound-absorbing materials of motor vehicles / ships that use internal combustion engines as the power source, since the noise pollution of motor vehicles / ships not only damages the auditory system of relevant personnel, but also affects the accuracy of instruments and accelerates the aging of the vehicle / ship hull, it is therefore reduced Its noise ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C25/68C03C25/70C03C13/06
CPCC03C13/06C03C25/68C03C25/70
Inventor 姚勇徐鹏
Owner SICHUAN AEROSPACE TUOXIN BASALT IND
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