Sound absorption and noise reduction material for clothes and preparation method of sound absorption and noise reduction material

A noise reduction and sound absorption technology, applied in the direction of sound-producing equipment, textiles and papermaking, instruments, etc., can solve the problems of little research on the sound-absorbing and noise-reducing function of maternity clothing, great harm to babies, and limited effect, etc. Low-frequency sound absorption performance, good economic and social value, and low production cost

Inactive Publication Date: 2021-03-23
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the functional finishing of maternity clothes is mainly in the aspects of electromagnetic shielding, anti-radiation, and UV protection, but noise is also very harmful to babies. However, there are few studies on the sound absorption and noise reduction function of maternity clothes
The noise received by the fetus is transmitted through the abdominal wall of the mother. Although the uterus, amniotic fluid and other tissue structures in the abdominal wall of the mother can also protect the hearing of the fetus to a certain extent, the effect is very limited

Method used

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  • Sound absorption and noise reduction material for clothes and preparation method of sound absorption and noise reduction material
  • Sound absorption and noise reduction material for clothes and preparation method of sound absorption and noise reduction material
  • Sound absorption and noise reduction material for clothes and preparation method of sound absorption and noise reduction material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Step 1): Prepare polyvinyl alcohol spinning solution, add polyvinyl alcohol into distilled water, wherein the concentration of polyvinyl alcohol is 10wt.% (if polyvinyl alcohol is 1g, then add 9g of distilled water), 90 ℃ constant temperature magnetic stirring 20 to 24 hours to obtain a uniform solution;

[0027] Step 2): Electrospinning is carried out on the basis of melt-blown nonwoven fabric: the applied voltage is 18kV, the spinning speed is 1mL / h, and the spinning distance is 13cm;

[0028] Step 3): drying at room temperature;

[0029] Step 4): Cover the nanofiber membrane with another layer of melt-blown nonwoven fabric, and combine the nanofiber membrane with the two layers of melt-blown nonwoven fabric by hot pressing to obtain a sound-absorbing and noise-reducing material. Coefficients such as figure 1 (cavity depth 0mm), figure 2 (cavity depth 5mm) shown.

[0030] The mechanical properties of nanofibrous membranes are image 3 As shown, the average sound...

Embodiment 2

[0032] Step 1): Prepare polyvinyl alcohol spinning solution, add polyvinyl alcohol into distilled water, and stir magnetically at a constant temperature of 90°C to obtain a uniform polyvinyl alcohol solution, then add polyethylene oxide, wherein the concentration of polyvinyl alcohol is 10wt.%, The concentration of polyethylene oxide is 0.5wt.% (if the distilled water is 8.95g, add 1g of polyvinyl alcohol and 0.05g of polyethylene oxide), stir magnetically for 20-24h to obtain a uniform solution;

[0033] Step 2): Electrospinning is carried out on the basis of melt-blown nonwoven fabric: the applied voltage is 18kV, the spinning speed is 1mL / h, and the spinning distance is 13cm;

[0034] Step 3): drying at room temperature;

[0035] Step 4): Cover the nanofiber membrane with another layer of melt-blown nonwoven fabric, and combine the nanofiber membrane with the two layers of melt-blown nonwoven fabric by hot pressing to obtain a sound-absorbing and noise-reducing material. C...

Embodiment 3

[0038] Step 1): Prepare polyvinyl alcohol spinning solution, add polyvinyl alcohol into distilled water, add TiO2, and stir at a constant temperature of 90°C to obtain a uniform polyvinyl alcohol solution, then add polyethylene oxide, wherein the concentration of polyvinyl alcohol is 10wt %, the concentration of polyethylene oxide is 1wt.% (such as distilled water is 8.9g, then add polyvinyl alcohol 1g, polyethylene oxide 0.1g), magnetic stirring for 20 ~ 24h, to obtain a uniform solution;

[0039] Step 2): Electrospinning is carried out on the basis of melt-blown nonwoven fabric: the applied voltage is 18kV, the spinning speed is 1mL / h, and the spinning distance is 13cm;

[0040] Step 3): drying at room temperature;

[0041] Step 4): Cover the nanofiber membrane with another layer of melt-blown nonwoven fabric, and combine the nanofiber membrane with the two layers of melt-blown nonwoven fabric by hot pressing to obtain a sound-absorbing and noise-reducing material. Coeffici...

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Abstract

The invention discloses a sound absorption and noise reduction material for clothes and a preparation method of the sound absorption and noise reduction material. The sound absorption and noise reduction material for the clothes comprises two layers of melt-blown non-woven fabric matrices, and a nanofiber membrane is arranged between the two layers of melt-blown non-woven fabric matrices. The preparation method comprises the following steps: dissolving polyvinyl alcohol in distilled water, adding polyoxyethylene, and magnetically stirring to obtain a spinning solution; carrying out electrostatic spinning on the spinning solution by taking the melt-blown non-woven fabric as a substrate, and drying at room temperature; and covering a layer of melt-blown non-woven fabric on the nanofiber membrane to obtain the sound absorption and noise reduction material for the clothes. The material and the structure have good medium-low frequency sound absorption performance, the raw materials are environmentally friendly, safe, harmless to the human bodies, and particularly suitable for a clothing material for pregnant women, and the preparation and operation method is simple.

Description

technical field [0001] The invention relates to an edible sound-absorbing and noise-reducing material and a preparation method thereof, belonging to the field of sound-absorbing materials and their preparation. Background technique [0002] At present, the functional finishing of maternity clothes is mainly in the aspects of electromagnetic shielding, anti-radiation, and anti-ultraviolet radiation. However, noise is also very harmful to babies. However, there are few studies on the sound absorption and noise reduction function of maternity clothes. The noise received by the fetus is transmitted through the abdominal wall of the mother. Although the uterus, amniotic fluid and other tissue structures in the abdominal wall of the mother can also protect the hearing of the fetus to a certain extent, the effect is very limited. Especially for low-frequency sounds, there is almost no weakening function. At this time, it is equivalent to that the auditory system of the fetus is dir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/559D04H1/728D04H1/4309D04H1/4382D04H1/56G10K11/168
CPCD04H1/4309D04H1/4382D04H1/559D04H1/56D04H1/728G10K11/168
Inventor 晏雄沈佳慧张斌李晓才胡吉永
Owner DONGHUA UNIV
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