Three-dimensional zigzag nanofiber compound window screen and electrostatic spinning method thereof

A nanofiber and electrospinning technology, which is applied in fiber processing, spinning solution preparation, textiles and papermaking, etc., can solve the problems of large resistance pressure drop and low filtration efficiency of filter materials, and achieve low resistance pressure and good fiber structure Controllability, effect of reducing resistance pressure drop

Active Publication Date: 2016-10-26
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a three-dimensional meandering nanofiber composite window screen and its electrospinning method, which effectively solves the problems of low filtration efficiency and large resistance pressure drop of the filter material prepared in the prior art; The electrospinning composite spinning technology of the membrane provides an electrospun three-dimensional tortuous nanofiber composite window screen

Method used

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  • Three-dimensional zigzag nanofiber compound window screen and electrostatic spinning method thereof
  • Three-dimensional zigzag nanofiber compound window screen and electrostatic spinning method thereof
  • Three-dimensional zigzag nanofiber compound window screen and electrostatic spinning method thereof

Examples

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Embodiment 1

[0030] An electrospinning method of a three-dimensional tortuous nanofiber composite window screen, the specific spinning process is as follows:

[0031] 1) dissolving the fluorinated ethylene propylene copolymer in formic acid to form a spinning solution with a concentration of 25 wt %;

[0032] 2) The receiving surface is selected as the receiving surface of the window screen composite removable three-dimensional zigzag shape template; the removable three-dimensional zigzag shape template is made of hot-melt material, the hot-melt material is gelatin, and the thickness is 0.1mm; the material of the window screen is nylon, and the window screen is made of nylon. The fiber diameter is 50 μm, the pore size is 500 μm, and each zigzag unit of the removable three-dimensional zigzag shape template has a triangular bending mode, the triangular folding height h=5mm, folding width w=57mm, folding angle α=5°, each zigzag unit As a group, the number of groups in the spinning unit is 3, ...

Embodiment 2

[0037] An electrospinning method of a three-dimensional tortuous nanofiber composite window screen, the specific spinning process is as follows:

[0038] 1) dissolving polyperfluoroethylene propylene in tetrahydrofuran to form a spinning solution with a concentration of 20wt%;

[0039] 2) The receiving surface is selected as the receiving surface of the window screen composite removable three-dimensional zigzag shape template; the removable three-dimensional zigzag shape template is made of hot-melt material, the hot-melt material is agarose gel, and the thickness is 0.5mm; the window screen is made of glass fiber, The diameter of the fiber in the screen is 50 μm, the aperture size is 490 μm, and the bending mode of each bending unit of the removable three-dimensional bending shape template is a triangle, the folding height of the triangle is h=40mm, the folding width w is 40mm, and the folding angle α=45°, each The zigzag unit is a group, the number of groups in the spinning ...

Embodiment 3

[0044] An electrospinning method of a three-dimensional tortuous nanofiber composite window screen, the specific spinning process is as follows:

[0045] 1) dissolving a mixture of fluorinated ethylene propylene copolymer and polyperfluoroethylene propylene with a mass ratio of 1:1 in N,N-dimethylformamide to form a spinning solution with a concentration of 20 wt %;

[0046] 2) The receiving surface is selected as the receiving surface of the window screen composite removable three-dimensional zigzag shape template; the removable three-dimensional zigzag shape template is made of hot-melt material, the hot-melt material is gelatin, and the thickness is 0.8mm; the material of the window screen is nylon, and the window screen is made of nylon. The fiber diameter is 48 μm, the pore size is 280 μm, the bending mode of each bending unit of the removable three-dimensional bending shape template is trapezoidal, the folding height of the trapezoid is h=5mm, the folding width w is 59mm,...

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Abstract

The invention relates to a three-dimensional zigzag nanofiber compound window screen and an electrostatic spinning method thereof. A zigzag template receiving technique, a needle head three-dimensional arrangement technique and a gradient electric field circulation spinning technique are adopted during an electrostatic spinning process so as to obtain a three-dimensional zigzag nanofiber compound film having an adhesive-fluffy stacked structure, i.e., the three-dimensional zigzag nanofiber compound window screen; the three-dimensional nanofiber compound window screen is characterized in that the gram weight is 0.01-70 g/m2, the efficiency for filtering particles having the diameter of 0.006-1 [mu]m is greater than or equal to 80%, the resistance pressure drop is less than 25 Pa, and the light transmittance is 30-90%. The three-dimensional nanofiber compound window screen is simple in preparation process, is low in cost, is high in filtering efficiency, is low in resistance pressure drop, and has wide application prospect in the fields of individual protection and indoor air purification.

Description

technical field [0001] The invention belongs to the technical field of filter material preparation, and relates to a three-dimensional tortuous nanofiber composite window screen and an electrospinning method thereof, in particular to a combination of template receiving technology, needle three-dimensional arrangement technology and gradient electric field circulation spinning technology Three-dimensional tortuous nanofibrous filter material for window screens and its electrospinning method. Background technique [0002] In recent years, the smog pollution problem that continues to appear in most parts of my country has seriously threatened people's health. Opening windows for ventilation and indoor cleanliness in a smog environment have become contradictory. Therefore, the development of anti-smog window screen filter materials has become a solution to this problem. Contradictory effective way. The existing anti-smog window screen filter materials are difficult to meet the f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/728D01D5/00D01D1/02E06B9/52
CPCD01D1/02D01D5/0038D01D5/0069D01D5/0076D01D5/0092D04H1/728E06B9/52
Inventor 丁彬赵兴雷李玉瑶王珊印霞俞建勇
Owner DONGHUA UNIV
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