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Nano-fiber and micro-fiber composite anti-haze gauze mask

A technology of microfibers and nanofibers, applied in protective clothing, clothing, clothing, etc., can solve the problems of poor interception effect of inhalable particulate matter such as PM2.5, and achieve the effect of simple preparation method and low cost

Inactive Publication Date: 2017-12-12
江苏纳纤新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent CN2884939Y announced the use of electrospinning technology to prepare masks and mask filter materials, but the interception effect on inhalable particulate matter such as PM2.5 is not good.
At present, there is no report on anti-smog masks using electrospun nanofibers as functional layers to prepare functional nanofiber masks to achieve the functions of adsorption, VOC degradation, harmful gas removal, odor removal, antibacterial and antiviral functions.

Method used

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  • Nano-fiber and micro-fiber composite anti-haze gauze mask

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] In this embodiment, the helical needle-free electrospinning technology is used to prepare an aqueous solution of polyvinyl alcohol (PVA, with an average molecular weight of 146,000 to 186,000, 96% hydrolyzed, Sigma-Aldrich) with a concentration of 8%, and the polyvinyl alcohol is injected into the reservoir first. In the liquid tank, set the spinning voltage to 75kV, the spinning distance to 20cm, the spinning head speed to 5rpm, the fiber speed of the stainless steel woven mesh curtain collector to 10m / min, and the spinning time to 1.5min. The base fabric is spunbonded nonwoven fabric for air filtration. Using 1 nanofiber layer 3 ( figure 1 Middle layer 3) and 2 layers of spunbond nonwovens 1, 4 ( figure 1 1st layer, 4th layer), 1 layer of melt-blown nonwoven fabric for air filtration 2 ( figure 1 The second layer in the mask) is composited into a mask (a total of 4 layers use 1 nanofiber layer). After testing, the composite mask as an air filter material has a rete...

Embodiment 2

[0040] This embodiment uses spiral needle-free electrospinning technology to prepare an aqueous solution of polyvinyl alcohol (PVA, with an average molecular weight of 146,000 to 186,000, 96% hydrolyzed, Sigma-Aldrich) with a concentration of 8%. First, the polyvinyl alcohol is injected into the stock solution In the groove, the spinning voltage is set to be 75kV, the spinning distance is 20cm, the spinning head speed is 5rpm, the fiber speed of the stainless steel woven mesh curtain collector is 10m / min, and the spinning time is 2min. The base fabric is spunbonded nonwoven fabric for air filtration. The nanofiber layer on the nonwoven fabric ( figure 1 3rd layer) and 2 layers of spunlace nonwovens ( figure 1 1st layer, 4th layer), 1 layer of melt-blown nonwoven fabric for air filtration ( figure 1 Middle ground 2 layers) compound to make a mask. Reference for the compound form of non-woven fabrics in masks figure 1 . After testing, the composite mask as an air filter mat...

Embodiment 3

[0042] Polyvinylidene fluoride (PVDF, average molecular weight 275,000, Sigma-Aldrich) was dissolved in DMF / acetone (volume ratio 4 / 6) mixed solvent to prepare a spinning solution with a solubility of 16% by weight.

[0043] Scatter tourmaline fraction (5% by weight) with nanometer particle size into the prepared electrospinning solution.

[0044] The obtained electrospinning solution is poured into the liquid storage tank, and the spiral needle-free electrospinning technology is used to produce tourmaline / PVDF nanofibers. The spinning voltage is set to 75kV, the spinning distance is 20cm, the spinning head speed is 5rpm, and the spinning time 1.5min. The fiber speed of the stainless steel woven mesh curtain collector is 10m / minn. The base fabric is spunbonded nonwoven fabric for air filtration.

[0045] Fabrication of nanofiber layers and nonwovens by figure 1 Composite preparation mask, nanofiber layer ( figure 1 3rd layer) and 2 layers of spunlace nonwovens ( figure 1 ...

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Abstract

The invention relates to a nano-fiber and micro-fiber composite anti-haze gauze mask. The gauze mask has the advantages that the air resistance is low, and the particulate pollutant filtering efficiency is high; the gauze mask can filter volatile organic compounds, acid gas, alkaline gas, nitric oxides, sulfur oxides and carbon monoxide, or eliminate smoke, peculiar smell, formaldehyde and the like, and can be used for prevention in various pollution-gase sites. The nano-fiber and micro-fiber composite anti-haze gauze mask includes at least one micro-fiber layer and a nano fiber layer, wherein the nano fiber layer is arranged on the inner side of the micro-fiber layer and can filter volatile organic compounds, acid gas, alkaline gas, nitric oxides, sulfur oxides and carbon monoxide and eliminate smoke, peculiar smell and formaldehyde; functional additives are added into nano fibers of the nano fiber layer and include a VOC adsorbent, an aidic adsorbent, an alkaline adsorbent, a bactericide, an antiviral agent, a photolysis catalyst used for decomposing VOC, a formaldehyde catalytic oxidant and a carbon monoxide adsorbent.

Description

technical field [0001] The invention relates to a preparation method of a mask, in particular to a nanofiber-micron fiber composite anti-fog mask. Background technique [0002] With the continuous rapid development of my country's economy, the process of urbanization and industrialization is accelerating, industrial production, daily power generation, automobile exhaust emissions and other processes discharge a large number of residues into the air, which greatly increases the concentration of particulate matter in the air, especially PM10 (in the air Ultrafine particles with a diameter of less than 10um) and PM2.5 (fine particles with a diameter of less than 2.5um in the air), which have an important impact on air quality and visibility. At present, the main pollutants affecting the air quality of my country's cities are PM2.5 particles floating in the atmosphere, which seriously threaten people's health. [0003] Research has shown that fine particulate matter travels fart...

Claims

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Application Information

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IPC IPC(8): A41D13/11A41D31/02
CPCA41D13/1192A41D31/30A41D31/305
Inventor 林童牛海涛赵雪婷王红霞邵浩
Owner 江苏纳纤新材料科技有限公司
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