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Preparation method of a hollow biomass fiber/polymer composite sound-absorbing material

A biomass fiber and sound-absorbing material technology, applied in the field of fiber material manufacturing, can solve the problems of poor biodegradability, narrow pore distribution, and small frequency range of sound absorption, and achieve light weight, good antibacterial properties, low density, and low price. Effect

Active Publication Date: 2020-10-27
吴江乾昌纺织有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing fiber-based sound-absorbing materials have a narrow pore distribution and a small range of sound-absorbing frequencies.
Moreover, the existing fiber materials have poor biodegradability, causing greater pressure on the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Example 1: Preparation of a hollow biomass fiber / polymer composite sound-absorbing material

[0030] The first step is to dissolve sulfuric acid with a mass fraction of 1% in water, put in palm fiber at a bath ratio of 1:20 to 1:200, dip and dye at 70°C for 3 hours, filter out the material, and wash it under running water Clean and dry. Dissolve sodium hydroxide with a mass fraction of at least 1% and hydrogen peroxide with a mass fraction of at least 2.4% in water, put into acid-treated palm fiber at a liquor ratio of 1:200, and dip-dye at 70°C for 5 hours until the fiber becomes Floating on the solution in white;

[0031] In the second step, the palm fiber is repeatedly washed until the palm fiber is neutral, and dried to obtain the hollow fibril of the palm fiber; the hollow fibril of the palm fiber is dissolved in a solution of acetic acid and acetic anhydride, dispersing the palm fiber;

[0032] The third step is to add perchloric acid with a mass fraction of 0....

Embodiment 2

[0036] Example 2: Preparation of a hollow biomass fiber / polymer composite sound-absorbing material

[0037] In the first step, the sodium hydroxide with a minimum mass fraction of 2% and the hydrogen peroxide with a minimum mass fraction of 3% are dissolved in water, and the acid-treated ox horn melon fiber is put into it at a bath ratio of 1:50. Dip for 2h. Repeat the preceding steps 2 times until the fibers become white and float on the solution;

[0038]In the second step, the horn melon fiber is repeatedly washed until the horn melon fiber is neutral, and the hollow fibril of the horn melon fiber is obtained by drying; the hollow fibril of the horn melon fiber is dissolved in In the solution of dimethylformamide, make described ox horn melon fiber disperse;

[0039] In the third step, add 1% acetyl chloride to the solvent, add 0.05% pyridine, and soak for 3 hours at 40°C to obtain fiber pulp, filter the fiber pulp, wash repeatedly until neutral, and dry Dried to obtain ...

Embodiment 3

[0043] Example 3: Preparation of a hollow biomass fiber / polymer composite sound-absorbing material

[0044] The first step is to dissolve sulfuric acid with a mass fraction of 1% in water, put into palm fiber according to the bath ratio of 1:50, dip and dye at 80°C for 2 hours, filter out the material, wash it under running water, and dry it . Dissolve sodium hydroxide with a mass fraction of at least 1% and hydrogen peroxide with a mass fraction of at least 4% in water, put into acid-treated palm fiber at a bath ratio of 1:200, and dip-dye at 80°C for 2 hours until the fiber becomes Floating on the solution in white;

[0045] In the second step, the palm fiber is repeatedly washed until the palm fiber is neutral, and dried to obtain the hollow fibril of the palm fiber; the hollow fibril of the palm fiber is dissolved in a solution of acetic anhydride to make the palm fiber The above palm fibers are dispersed;

[0046] In the third step, adding aluminum perchlorate with a m...

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PUM

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Abstract

The invention discloses a preparation method of a hollow biopolymer fiber / high polymer composite acoustic material, and belongs to the field of manufacturing of fiber materials. The method is characterized in that hollow biopolymer cellulosic fibers are used as the raw materials; the surface density and the volume density of the materials are controlled; the raw materials are subjected to acetylation to form nanopores; a water soluble high polymer is used as an adhering agent, so that the material has macroscopic-fine-scomic-microcosmic pores, and complex route channels can be formed in the materials, and thus the acoustic wave at different frequency bands can be absorbed greatly; in addition, the prepared acoustic material has the advantages of being biodegradable, environmentally friendly, low in fiber material density, light in mass, and high in antibacterial activity.

Description

technical field [0001] The invention relates to a method for preparing a hollow biomass fiber / high polymer composite sound-absorbing material, which belongs to the field of fiber material manufacturing. Background technique [0002] Noise is the main source of environmental pollution that affects the comfort of people's work and life. Noise pollution has become another important environmental problem after water pollution and air pollution. The acoustic environment is closely related to people's production and life, and has a great impact on human beings in terms of physiology, psychology, and behavioral habits. Noise not only disturbs people's normal life, hinders study and work, but also causes people's physiological and psychological adverse reactions, causing hearing loss, dizziness, insomnia, lack of concentration and other problems, and can induce high blood pressure and heart disease, etc. In severe cases, it can be life-threatening. With the advancement of science ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L29/04C08L1/02D06M11/38D06M11/55D06M13/188D06M101/04
CPCC08L29/04D06M11/38D06M11/55D06M13/188D06M2101/04C08L1/02
Inventor 毕明陈长洁汤健
Owner 吴江乾昌纺织有限公司
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