Self-cleaning type air filter membrane and manufacturing method thereof

An air filtration and self-cleaning technology, which is applied in separation methods, dispersed particle filtration, chemical instruments and methods, etc., can solve problems such as difficult, high-efficiency, low-resistance, and filtration of ultrafine particles, and achieve low cost, simple preparation method, high-efficiency self-cleaning The effect of cleaning and reuse

Inactive Publication Date: 2018-01-05
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, traditional fiber filter materials are facing the bottleneck problem of being difficult to filter ultrafine particles with high efficiency and low resistance.

Method used

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  • Self-cleaning type air filter membrane and manufacturing method thereof
  • Self-cleaning type air filter membrane and manufacturing method thereof
  • Self-cleaning type air filter membrane and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] In this example, an electrospun polyacrylonitrile fiber membrane PAN was composited with dichlorodimethylsilane-modified silica nanoparticles to prepare a self-cleaning air filter membrane. Specific steps are as follows:

[0023] (1) Preparation of electrospun polyacrylonitrile fiber membrane:

[0024] Take polyacrylonitrile powder, dissolve it in the organic solvent N,N-dimethylformamide, stir sufficiently to dissolve the polyacrylonitrile, and prepare a transparent and clear polyacrylonitrile solution with a mass concentration of 11%;

[0025] The electrospun polyacrylonitrile fiber membrane was obtained by electrospinning electrospinning technology using polyacrylonitrile solution as the spinning solution. The optimal electrospinning process was as follows: the injection rate was 1.0mL / h, the electrospinning voltage was 13kV, and the collection distance was 15cm, aluminum foil as a conductive collection device;

[0026] (2) preparing silica nanoparticles modified w...

Embodiment 2

[0032] In this example, a self-cleaning air filter membrane was prepared by compounding electrospun polystyrene fiber membrane PS with dichlorodimethylsilane-modified silica nanoparticles. Specific steps are as follows:

[0033] (1) Preparation of electrospun polystyrene fiber membrane:

[0034] Take polystyrene particles, dissolve them in the organic solvent N,N-dimethylformamide, stir well to dissolve the polystyrene, and prepare a transparent and clear polystyrene solution with a mass concentration of 11%;

[0035] The polystyrene solution was used as the spinning solution to obtain the electrospun polystyrene fiber membrane by electrospinning technology. The optimal process of electrospinning is: the injection rate is 1.0mL / h, the electrospinning voltage is 14kV, and the collection distance is 22cm, copper mesh as a conductive collection device;

[0036] (2) preparing silica nanoparticles modified with dichlorodimethylsilane into an ethanol suspension with a mass concent...

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Abstract

The invention discloses a self-cleaning type air filter membrane and a manufacturing method thereof. The self-cleaning type air filter membrane is formed by compounding an electrostatic spinning polymer based fiber membrane and hydrophobic nano paint. The preparation method is simple, is low in cost, is low in requirement on equipment, and is suitable for large-scale production; and the obtained product has very good self-cleaning performance, can effectively reduce the cost of the current air filter membrane, and prolongs the service life of the product.

Description

technical field [0001] The invention relates to an air filter membrane, in particular to a self-cleaning air filter membrane and a preparation method thereof, and belongs to the technical field of air filter membranes. Background technique [0002] Airborne particulate matter (particulate matter, PM) pollution has recently become one of the most serious environmental problems, posing a huge threat to public health. Long-term exposure to particulate pollution can lead to heart disease, stroke and lung disease, including cancer, while short-term exposure to high concentrations can trigger asthma. Due to its serious impact on public health, it is necessary and urgent to deploy effective protection for the public from the current haze weather. While personal protection outdoors can be achieved with face protection, indoor air typically relies on expensive and energy-intensive air filtration devices. An important part of particle removal technology is the filter membrane. Idea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D67/00B01D71/26B01D71/28B01D71/34B01D71/38B01D71/42B01D71/48B01D71/56B01D46/54
Inventor 曹付虎赵越张传玲张华然卢红磊钟贻满朱恒诚
Owner HEFEI UNIV OF TECH
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