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Nano spider web/beaded fiber composite air filter membrane and preparation method thereof

An air filtration and fiber composite technology, which is applied in separation methods, dispersed particle filtration, chemical instruments and methods, etc., can solve the problems of high filtration efficiency and low filtration resistance, and achieve high filtration efficiency, low resistance pressure drop, and flexible structure Regulatory effect

Active Publication Date: 2019-06-04
XINJI HUARUI FILTER PAPER CO LTD
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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 to provide a nano-spider web / beaded fiber composite air filter membrane and its preparation method for the existing air filter materials that cannot have both high filtration efficiency and low filter resistance. Technology and electrospinning technology to prepare the air filter membrane composed of nano-spider web and beaded fiber, and endow the air filter membrane with high filtration efficiency and excellent filtration performance of reduced resistance pressure

Method used

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  • Nano spider web/beaded fiber composite air filter membrane and preparation method thereof
  • Nano spider web/beaded fiber composite air filter membrane and preparation method thereof
  • Nano spider web/beaded fiber composite air filter membrane and preparation method thereof

Examples

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Effect test

Embodiment 1

[0033] A preparation method of nano spider web / beaded fiber composite air filter membrane, the specific preparation process is as follows:

[0034] (1) Add 0.15g polyamide 6 to 0.83g formic acid solvent at room temperature, then add 0.02g sodium chloride, stir continuously with a magnetic stirrer until fully dissolved, and obtain a polyamide containing sodium chloride with a mass fraction of 15% 6 Spinning solution; under the conditions of spinning voltage 20kV, receiving distance 15cm, spinning speed 0.3mL / h, temperature 22°C, relative humidity 40%, carry out electrostatic spraying, which will contain two-dimensional network fibers and one-dimensional The polyamide 6 nanometer spider web of the nanofiber is deposited on the aluminum foil surface of the receiving drum to obtain the polyamide 6 nanometer spider web receiving layer.

[0035](2) Add 0.64g of polyamide 6 to 7.36g of formic acid solvent at room temperature, stir continuously with a magnetic stirrer until fully diss...

Embodiment 2

[0041] A preparation method of nano spider web / beaded fiber composite air filter membrane, the specific preparation process is as follows:

[0042] (1) Add 0.3g of polyamide 66 to 1.17g of formic acid solvent at room temperature, then add 0.03g of calcium chloride, stir continuously with a magnetic stirrer until fully dissolved, and obtain a polyamide containing calcium chloride with a mass fraction of 20% 66 spinning solution; under the conditions of spinning voltage 30kV, receiving distance 15cm, spinning speed 0.5mL / h, temperature 25 ℃, relative humidity 25%, carry out electrostatic spraying, will contain two-dimensional network fibers and one-dimensional The polyamide 66 nanometer spider web of the nanofiber is deposited on the aluminum foil surface of the receiving drum to obtain the polyamide 66 nanometer spider web receiving layer.

[0043] (2) Add 0.7g of polyamide 66 to 6.3g of formic acid solvent at room temperature, stir continuously with a magnetic stirrer until fu...

Embodiment 3

[0048] A preparation method of nano spider web / beaded fiber composite air filter membrane, the specific preparation process is as follows:

[0049] (1) Add 0.24g of polyacrylonitrile to 1.73g of N-N dimethylformamide solvent at room temperature, then add 0.03g of potassium chloride, stir continuously with a magnetic stirrer until fully dissolved, and obtain a 12% mass fraction containing Potassium chloride polyacrylonitrile spinning solution; under the conditions of spinning voltage 30kV, receiving distance 20cm, spinning speed 1mL / h, temperature 25°C, and relative humidity 45%, carry out electrostatic spraying, and the two-dimensional net The polyacrylonitrile nano-spider web of the shape fiber and the one-dimensional nano-fiber is deposited on the surface of the aluminum foil of the receiving drum to obtain the polyacrylonitrile nano-spider web receiving layer.

[0050] (2) Add 0.36g of polyacrylonitrile to 5.64g of N-N dimethylformamide solvent at room temperature, stir con...

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Abstract

The invention relates to a nanometer spider-web / bead fiber composite air filtration film and a preparation method thereof. The filtration film comprises a nanometer spider-web receiving layer, a bead fiber layer and a nanometer spider-web covering layer which are arranged from bottom to top. The preparation method comprises the following steps: preparing a nanometer spider-web film containing a two-dimensional netty fiber film and one-dimensional nanometer fiber through a static net spraying technology, and depositing the nanometer spider-web film on the surface of an aluminum foil of a receiving roller to obtain a nanometer spider-web receiving layer; preparing bead fiber consisting of continuous nanometer fiber and beads with micron-scale diameters distributed on the continuous nanometer fiber through a static spinning technology, and depositing the bead fiber on the surface of the nanometer spider-web receiving layer; preparing the nanometer spider-web film through the static net spraying technology and depositing the nanometer spider-web film on the surface of the bead fiber layer so as to obtain a nanometer spider-web covering layer; and carrying out sufficient drying to obtain the nanometer spider-web / bead fiber composite air filtration film. The preparation process is simple, the structure adjustability of the filtration film is high, the filter efficiency is high, the resistance pressure drop is small, and the clogging capacity is high.

Description

technical field [0001] The invention belongs to the technical field of air filter material preparation, and relates to a nano-spider web / beaded fiber composite air filter membrane and a preparation method thereof. In particular, different types of polymer materials are used as raw materials, and electrostatic spraying technology and electrostatic spinning technology are combined. Nano spider web / beaded fiber composite air filter membrane and preparation method thereof. Background technique [0002] With the rapid development of industrialization and urbanization in our country, the problem of air pollution is becoming more and more serious, especially the haze pollution that frequently occurs in most parts of our country in recent years, which has caused serious harm to people's health and living environment. The use of fiber filter materials to strengthen the filtration of fine particles in the air is an effective way to solve the above problems. However, the currently used...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D71/56B01D71/42B01D69/12B01D67/00B01D46/54
CPCB01D46/543B01D67/0002B01D69/12B01D71/42B01D71/56B01D2311/2649B01D2323/39
Inventor 刘兆麟王欣张威马晓红
Owner XINJI HUARUI FILTER PAPER CO LTD
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