Filter material for air purification and preparation method thereof

A filter material and air purification technology, applied in chemical instruments and methods, filtration separation, separation methods, etc., can solve the problems of submicron particle effects are not very obvious, and achieve simple preparation process, small air resistance, and easy disassembly Effect

Active Publication Date: 2014-04-09
HARBIN INST OF TECH AT WEIHAI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the commonly used air purification materials use a large amount of activated carbon, relying on the adsorption of activated carbon to adsorb these solid particles and toxic gas molecules, but the effect of using activated carbon alone to adsorb submicron particles is not very obvious

Method used

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  • Filter material for air purification and preparation method thereof

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preparation example Construction

[0016] The preparation method of the above-mentioned filter material for air purification of the present invention comprises the following steps: firstly prepare the central layer of nano-polyacrylonitrile fiber non-woven fabric, dissolve the polyacrylonitrile particles in N-N dimethylformamide (DMF), and prepare A polyacrylonitrile solution with a mass percentage of 12-16%, and then inject the prepared polyacrylonitrile solution into the multi-nozzle electrospinning equipment, adjust the voltage value to 22kV, and continuously spin for 4-6 hours to prepare a uniform White nano-polyacrylonitrile fiber non-woven fabric, polyacrylonitrile fiber diameter 150-200nm. The nano-polyacrylonitrile fiber non-woven fabric can be prepared in large quantities for standby use. The thickness of one layer of polyacrylonitrile fiber nonwoven fabric is 3-5mm; Then the prepared nanofiber nonwoven fabric is cut into sheets; Nano activated carbon particles are dispersed in polyvinyl alcohol aqueou...

Embodiment 1

[0023] A filter material for air purification, which is a multi-layer composite structure, consisting of a central layer, a symmetrically arranged polyester fiber felt middle layer, and a stainless steel protective net outer layer. The thickness of the central layer is 15mm, and it is made of nano activated carbon particles The coated nano-polyacrylonitrile (PAN) fiber non-woven fabric layer is superimposed, in which the diameter of the nano-PAN fiber is 150-200 nanometers, the diameter of the nano-activated carbon particle is 30nm, the thickness of the middle layer of polyester fiber felt is 10mm, and the outer layer of stainless steel mesh For the protective layer, five layers of material are compressed and fixed by bolts. The thickness of the single-layer nano-polyacrylonitrile fiber non-woven fabric is 3mm, and the single-layer nano-polyacrylonitrile fiber non-woven fabric per square meter is coated with 35-45g activated carbon, and the nano-polyacrylonitrile fiber non-wove...

Embodiment 2

[0029] A filter material for air purification, which is a multi-layer composite structure, consisting of a central layer, a symmetrically arranged polyester fiber felt middle layer, and a stainless steel protective net outer layer. The thickness of the central layer is 32mm, and it is made of nano activated carbon particles The coated nano-polyacrylonitrile (PAN) fiber non-woven fabric layer is superimposed. The diameter of the nano-PAN fiber is 150-200 nanometers, the diameter of the nano-activated carbon particle is 40nm, the thickness of the middle layer of polyester fiber felt is 15mm, and the outer layer of stainless steel mesh For the protective layer, five layers of material are compressed and fixed by bolts. The thickness of the single-layer nano-polyacrylonitrile fiber non-woven fabric is 4mm, and the single-layer nano-polyacrylonitrile fiber non-woven fabric per square meter is coated with 35-45g activated carbon, and the nano-polyacrylonitrile fiber non-woven fabric ...

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Abstract

The invention relates to a filter material for air purification and a preparation method thereof. The filter material is of a multi-layer composite structure and formed by a center layer, a middle polyester fiber mat layer and an outer stainless steel retainer layer, wherein the middle polyester fiber mat layer and the outer stainless steel retainer layer are symmetrically arranged; the thickness of the center layer is 15-50mm; the center layer is formed by a nano polyacrylonitrile (PAN) fiber non-woven layer coated by nano active carbon particles; the diameter of the nano PAN fiber is 150-200nm; the diameters of the nano active carbon particles are 30-50nm; the thickness of the middle polyester fiber mat layer is 10-25mm; the outer stainless steel retainer layer is a protective layer; five layers of materials are fixed by a bolt after being pressed. The filter material disclosed by the invention can be used for adsorbing fine particles which have great risks on a human body, and are 1.5-5 microns in particle size, the filtering efficiency is over 98%, and the filter material is applied to an air filter core in an indoor air purifier.

Description

technical field [0001] The invention relates to a composite filter material and a preparation method thereof, in particular to a filter material for air purification and a preparation method thereof. Background technique [0002] With the increasingly serious environmental pollution, coupled with the pollution of many interior decoration and decoration materials, air quality has aroused widespread concern in society. 68% of human diseases are related to air pollution; the World Health Organization lists indoor air pollution as the first of 18 types of carcinogens. Harmful particulate matter in the air generally refers to MP2.5 (solid particulate matter with a particle size of 2.5 microns) and finer particles, and it is difficult for traditional filter materials to filter such particulate matter. Therefore, a filter material capable of filtering MP2.5 and finer is the key to solving air pollution. At present, most of the commonly used air purification materials use a large ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/14B32B27/06B32B33/00B32B9/04B32B15/09
Inventor 张涛温广武范明王景泽
Owner HARBIN INST OF TECH AT WEIHAI
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