Antibacterial filtering material for mask and method for manufacturing antibacterial filtering material

A technology for filter materials and masks, which is applied in the field of antibacterial polymer nanofiber filter materials for masks and its preparation, can solve severe environmental problems and achieve the effects of low cost, excellent air permeability, and simple preparation methods

Inactive Publication Date: 2013-01-16
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, economic development has also

Method used

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  • Antibacterial filtering material for mask and method for manufacturing antibacterial filtering material
  • Antibacterial filtering material for mask and method for manufacturing antibacterial filtering material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Dissolve 2.000g of polyvinylidene fluoride and 1.5000g of silver nitrate in a mixed solvent of 2.677g of N,N-dimethylacetamide and 10.708g of acetone. A solution of polyvinylidene fluoride nanofibers was spun on a 2 g support meltblown nonwoven. The cross-sectional view of the antibacterial filter material for the prepared mask is as follows: figure 1 As shown, its surface diagram is shown as figure 2 shown. In the antibacterial filter material for the mask, the thickness of the silver nitrate-containing polyvinylidene fluoride nanofiber layer is 25um, and the average diameter of the polymer nanofiber is 595nm. The filter material is tested by the sodium flame method, and the interception rate of sodium chloride aerosol particles is 79.8%, and the pressure drop is 26.2mm water column.

Embodiment 2

[0035] Dissolve 1.000g of polyvinyl alcohol and 1.000g of silver sulfate in 10.000g of water. After the solutions are mixed uniformly, the aqueous solution of polyvinyl alcohol nanofibers containing silver sulfate is spun on 2g of support melt-blown non-woven fabric by solution electrospinning. superior. In the filter material for the prepared mask, the thickness of the polyvinyl alcohol nanofiber layer containing silver sulfate is 25um, and the average diameter of its polymer nanofiber is 330nm. After testing, the retention rate of the filter material for sodium chloride aerosol particles is 92.5%, and the pressure drop is 38.2mm water column.

Embodiment 3

[0037] Dissolve 1.000g of polylactic acid and 1.000g of zinc nitrate in a mixed solvent of 9.000g of dichloromethane and 0.500g of ethanol. After the solution is mixed uniformly, the solution of polylactic acid nanofibers containing zinc nitrate is spun by solution electrospinning. On 2 g support spunbond nonwoven. In the filter material for the prepared mask, the thickness of the polylactic acid nanofiber layer containing zinc nitrate is 30um, and the average diameter of its polymer nanofiber is 1000nm. After testing, the retention rate of the filter material for sodium chloride aerosol particles is 79.8%, and the pressure drop is 38.8mm water column.

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Abstract

The invention discloses an antibacterial filtering material for a mask and a method for manufacturing the antibacterial filtering material. The filtering material for the mask comprises antibacterial agents, polymeric nano-fibers and a supporting non-woven fabric. The method for manufacturing the antibacterial filtering material includes spinning the polymeric nano-fibers on the supporting non-woven fabric via solution or fusant of the polymeric nano-fibers added with the antibacterial agents by means of electrostatic spinning. The filtering material for the mask is high in rejection to ultrafine particles, bacteria and viruses, the method for manufacturing the filtering material is simple, cost is low, and the antibacterial filtering material and the method are suitable for industrial production. In addition, the mask made of the antibacterial filtering material is good in breathability, and rejection to sodium chloride aerosol particles with the sizes of 0.3 micrometer can be higher than 90%.

Description

technical field [0001] The invention relates to an antibacterial filter material for a mask and a preparation method thereof, in particular to an antibacterial polymer nanofiber filter material for a mask and a preparation method thereof. Background technique [0002] Today's world economy is developing rapidly, and people's living standards have improved significantly. However, economic development has also brought serious environmental problems. The residues emitted by combustion in the process of industrial production, daily power generation, and automobile exhaust emissions have a huge impact on human respiratory health. Especially the very fine particulate matter (PM 2.5) with a diameter of less than 2.5um in the air, they are the biggest culprits of atmospheric haze and human lung cancer. On February 29, 2012, Premier Wen Jiabao of the State Council presided over an executive meeting of the State Council and agreed to release the newly revised "Ambient Air Quality St...

Claims

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Application Information

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IPC IPC(8): B01D39/14D04H13/00D04H1/42A41D13/11
Inventor 李磊马吉全曹城英谭磊汪满意
Owner SHANGHAI JIAO TONG UNIV
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