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An electrospun multi-component nanofiber composite screen window and its preparation method

A nanofiber and multi-component technology, applied in fiber processing, textiles and papermaking, insect control, etc., can solve the problems of insufficient binding force, inability to effectively intercept fine particles, and easy detachment of nano-layers, etc., to achieve good ventilation performance , The effect of high efficiency and low resistance to light transmittance

Active Publication Date: 2019-10-08
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In the above-mentioned invention patents, the method of spraying is used to realize the preparation of nano-layers, which often causes the nano-layers to fall off easily due to insufficient bonding force. However, the pore size of the material produced by the ultra-fine fiber warp knitting technology obviously cannot reach the micro-nano level, and cannot be effective. intercept fine particles

Method used

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  • An electrospun multi-component nanofiber composite screen window and its preparation method
  • An electrospun multi-component nanofiber composite screen window and its preparation method

Examples

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Effect test

Embodiment 1

[0031] An electrospun multi-component nanofiber composite screen window and a preparation method thereof, the preparation method mainly comprising the following steps:

[0032] 1) Solution preparation: Add polyvinylidene fluoride (with a weight average molecular weight of 320,000) into N,N-dimethylformamide, seal it, put it in a water bath at 60°C and heat and stir for 10 hours, and finally prepare a stable, A uniform mass concentration of 20wt% polymer spinning solution for preparing a multi-component nanofiber layer;

[0033]2) The prepared polymer spinning solution is sucked into the spinneret module through the liquid supply device for electrospinning. The spinneret module is equipped with a ring-shaped gradient solvent vapor rapid removal device, and the process conditions of the electrospinning are: The voltages of different high-voltage power sources (10kV, 30kV, and 50kV respectively) are set in the wide vertical direction to form a multi-level incrementally distribute...

Embodiment 2

[0037] An electrospun multi-component nanofiber composite screen window and a preparation method thereof, the preparation method mainly comprising the following steps:

[0038] 1) Solution preparation: Add polyvinylidene fluoride (with a weight average molecular weight of 570,000) into N,N-dimethylacetamide, seal it and place it in a water bath at 60°C for 8 hours with heating and stirring, and finally prepare a stable, A uniform mass concentration of 18wt% polymer spinning solution for the preparation of multi-component nanofiber layers;

[0039] 2) The prepared polymer spinning solution is sucked into the spinneret module through the liquid supply device for electrospinning. The spinneret module is equipped with a ring-shaped gradient solvent vapor rapid removal device, and the process conditions of the electrospinning are: The voltages of different high-voltage power sources (10kV, 25kV, and 40kV respectively) are set in the wide vertical direction to form a multi-level inc...

Embodiment 3

[0043] An electrospun multi-component nanofiber composite screen window and a preparation method thereof, the preparation method mainly comprising the following steps:

[0044] 1) Solution preparation: Add polystyrene (weight-average molecular weight: 80,000) into N, N-dimethylformamide, and after sealing, stir continuously for 8 hours with a magnetic stirring device, and finally prepare a stable and uniform concentration of 28 wt% polymer spinning solution for preparing multi-component nanofiber layer;

[0045] 2) The prepared polymer spinning solution is sucked into the spinneret module through the liquid supply device for electrospinning. The spinneret module is equipped with a ring-shaped gradient solvent vapor rapid removal device, and the process conditions of the electrospinning are: The voltages of different high-voltage power sources (40kV, 25kV, and 10kV respectively) are set in the wide vertical direction to form a multi-level and decreasingly distributed high-volta...

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Abstract

The invention discloses an electrostatic-spinning multicomponent nano-fiber combined screen window and a preparation method thereof. The preparation method is characterized by including the steps that by means of a progressively step-by-step increased / decreased electric-field technique and an annular gradient solvent vapour fast-removal device, a polymer spinning solution is deposited on a screen window substrate through an electrostatic-spinning technique, and then the electrostatic-spinning multicomponent nano-fiber combined screen window is shaped and obtained by one step, wherein a nano-fiber layer arranged in a diameter distribution mode is arrayed in a progressively increased or decreased mode in the direction perpendicular to the breadth direction, and the diameter of nano-fibers is 10-500 nm. The electrostatic-spinning multicomponent nano-fiber combined screen window is environmentally friendly, safe and controllable in preparation method, can effectively remove fine particulate matter such as PM 2.5 and pollen in the air, has great ventilation performance and is suitable for indoor air filtration and dust removal and worth popularizing, wherein the filtration efficiency of particulate matter in the diameter of 0.03-8 microns can reach 95% or above, resistance pressure drop is small than 18 Pa, and the transmittance of light is 60-95%.

Description

technical field [0001] The invention relates to an electrospinning multi-component nanofiber composite screen and its preparation method, especially through the step-by-step increasing / decreasing technology of the electric field and the rapid removal device of the annular gradient solvent vapor, the diameter of the prepared nanofiber layer is distributed in a direction perpendicular to the web The width direction is arranged in increasing or decreasing order, and belongs to the technical field of dust removal. Background technique [0002] With the rapid development of science and technology, people's living standards continue to improve. In recent years, the sources and types of indoor air pollutants have increased day by day, and the quality of indoor environment has become worse and worse. The impact on human health has aroused widespread concern. According to surveys, people spend more than 80% of their time indoors, so the relationship between indoor air quality and peo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01D5/00E06B9/52
Inventor 丁彬廖亚龙赵兴雷李玉瑶丁鑫鑫印霞俞建勇
Owner DONGHUA UNIV
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