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High-efficiency and low-resistance nanofiber air filtering material for gauze mask and preparation method of filtering material

An air filter material and nanofiber technology, which is applied in the field of high-efficiency and low-resistance nanofiber air filter materials for masks and its preparation, can solve the problems of low air resistance and high filtration efficiency, and achieve precise control of bulk density, simple process, and good Effect of fiber structure controllability

Active Publication Date: 2015-05-27
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is: the current mask filter material cannot have both high filtration efficiency and low air resistance, and then provide a high-efficiency and low-resistance nanofiber air filter material for mask and its preparation method

Method used

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  • High-efficiency and low-resistance nanofiber air filtering material for gauze mask and preparation method of filtering material
  • High-efficiency and low-resistance nanofiber air filtering material for gauze mask and preparation method of filtering material
  • High-efficiency and low-resistance nanofiber air filtering material for gauze mask and preparation method of filtering material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] A preparation method of high-efficiency and low-resistance nanofiber air filter material for masks, the specific steps are:

[0053] Step 1: Place two parts of polyvinylidene fluoride powder in a vacuum oven at 80° C. for 3 hours to vacuum dry.

[0054] Step 2: Dissolve one part of the dried polyvinylidene fluoride powder in N,N-dimethylformamide, and then place it on a magnetic stirrer to stir for 10 hours to form a homogeneous solution. The mass fraction of the solution is 25%, as the spinning solution of the nanofiber layer with uniform cylindrical shape of the nano single fiber; at the same time, another dry polyvinylidene fluoride powder is dissolved in N,N-dimethylformamide , and continuously stirred for 10 hours with a magnetic stirring device to form a homogeneous solution with a mass fraction of 20%, which is used as a spinning solution for a nanofiber layer with a beaded structure as a single fiber.

[0055] The third step: the spinning device is as shown in ...

Embodiment 2

[0058] A preparation method of high-efficiency and low-resistance nanofiber air filter material for masks, the specific steps are:

[0059] Step 1: Place two parts of polybutylene terephthalate particles in a vacuum oven at 80° C. for 3 hours to vacuum dry.

[0060] The second step: dissolve one part of the dried polybutylene terephthalate particles in acetone, then place it on a magnetic stirrer and stir for 10 hours to form a homogeneous solution. The mass fraction of the homogeneous solution 30%, as the spinning solution of nanofiber layer with uniform cylindrical shape of nano single fiber; meanwhile, another part of dry polybutylene terephthalate particles was dissolved in acetone and continuously stirred with magnetic stirring device for 10 Hours, a homogeneous solution was formed, the mass fraction of the homogeneous solution was 23%, as a spinning solution for a nanofiber layer with a single fiber having a beaded structure.

[0061] The third step: the spinning device...

Embodiment 3

[0064] A high-efficiency and low-resistance nanofiber air filter material for a mask and a preparation method thereof, the specific steps are:

[0065] Step 1: Place two parts of polyethylene terephthalate particles in a vacuum oven at 80° C. for 3 hours to vacuum dry.

[0066] The second step: dissolve one part of the dried polyethylene terephthalate particles in formic acid, then place it on a magnetic stirrer and stir for 10 hours to form a homogeneous solution. The mass fraction of the homogeneous solution 6% as the spinning solution of the nanofiber layer with uniform cylindrical morphology of nanofibers; meanwhile, another part of dry polyethylene terephthalate particles was dissolved in formic acid and stirred continuously for 10 Hours, a homogeneous solution is formed, the mass fraction of the homogeneous solution is 20%, as a spinning solution for a nanofiber layer with a single fiber having a beaded structure.

[0067] The third step: the spinning device is as shown...

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Abstract

The invention relates to a high-efficiency and low-resistance nanofiber air filtering material for a gauze mask and a preparation method of the filtering material. According to the preparation method, by virtue of a steam field compensation and control technology, an equal-electric voltage spinning technology and a nanofiber structure with a bead structure and innovatively introducing single fibers in an electrostatic spinning process, the high-efficiency and low-resistance nanofiber air filtering material which is free of adhesion between fibers and fluffy in structure, has a three-dimensional cavity and is in a net communication structure is obtained in a one-step molding manner. According to the high-efficiency and low-resistance nanofiber air filtering material for the gauze mask, the filtering efficiency on granules which are 0.006-2.5 microns can reach over 99.999%; and the piezoresistance is less than 30Pa. The high-efficiency and low-resistance nanofiber air filtering material is simple in preparation technology, low in cost, high in filtering efficiency and small in resistance pressure drop, and has a wide application prospect in the field of individual protective masks.

Description

technical field [0001] The invention belongs to the technical field of filter material preparation, and relates to a mask filter material and a preparation method thereof, in particular to a high-efficiency and low-resistance nanofiber air filter material for a mask and a preparation method thereof. A high-efficiency and low-resistance nanofiber air filter material for masks with compensation and control technology and the same electric voltage spinning technology and a preparation method thereof. Background technique [0002] With the rapid development of my country's industry, the problem of environmental pollution is becoming more and more serious, especially in recent years, the smog pollution problem that has continued to appear in most parts of our country has seriously threatened people's health, so effective protection against it is imminent. Wearing a high-efficiency and low-resistance professional anti-fog mask is one of the effective ways to prevent haze pollutant...

Claims

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Application Information

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IPC IPC(8): B01D39/14A41D13/11
Inventor 丁彬赵兴雷杨印景宋骏张世超俞建勇
Owner DONGHUA UNIV
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