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Self-cleaning type air filtering material and preparation method thereof

An air filter material, self-cleaning technology, applied in the field of filtration, can solve problems such as easy peeling or damage, weak electrospinning layer strength, delamination, peeling, etc., to achieve good processing and use performance, wide performance control range, Restoring the effect of filter performance

Active Publication Date: 2012-08-22
FIBRWAY MATERIALS SCI & TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The strength of the electrospun layer formed by the existing electrospinning technology is too weak, it is easy to peel off or be damaged, and the durability is not good; while the strength of the melt-blown fiber layer formed by the melt-blown technology is not good, and it is easy to fluff during processing damaged
In addition, the melt-blown fiber layer formed by the melt-blown technology is combined by forming the base material and the melt-blown layer separately and then recombining them. The bonding strength between layers is not good, and it is prone to delamination and peeling during processing and use.

Method used

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  • Self-cleaning type air filtering material and preparation method thereof
  • Self-cleaning type air filtering material and preparation method thereof
  • Self-cleaning type air filtering material and preparation method thereof

Examples

Experimental program
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Embodiment 1

[0031] Example 1 Self-cleaning air filter material provided by the invention

[0032] This embodiment provides a preparation method of a self-cleaning air filter material.

[0033] The preparation process of self-cleaning air filter material can be found in image 3 , the specific details are as follows:

[0034] 1) Mix the fibrillated tencel fiber slurry and the fibrillated aramid fiber slurry used to form the submicron fiber layer in the stock tank at a weight ratio of 1:9 to obtain a submicron fiber layer with a certain concentration fiber suspension;

[0035] 2) Mixing the wood fiber slurry and the polyester fiber slurry used to form the support area in another slurry tank at a weight ratio of 6:4 to obtain a fiber suspension of a certain concentration in the support area;

[0036] 3) The submicron fiber layer fiber suspension and the support region fiber suspension are respectively sent to the forming wire through the double-layer headbox, and the support region fibe...

Embodiment 2

[0050] Example 2 Research on the self-cleaning air filter material provided by the invention

[0051] With reference to the preparation method provided in Example 1, the quantification of the submicron fiber layer of the self-cleaning air filter material was studied, wherein the supporting regions all used 60% wood fibers and 40% polyester fibers with a diameter of 9 μm, and the quantification was 90g / m 2 . The results are shown in Table 1.

[0052] Table 1

[0053]

[0054] It can be seen from Table 1 that although the filtration efficiency increases with the increase of the submicron fiber layer weight, the increase speed of the filtration efficiency is significantly lower than the increase speed of the filtration resistance. Excessive resistance is very detrimental to the filtration process. Therefore described submicron fiber layer quantification should not exceed 10g / m 2 .

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Abstract

The invention provides a self-cleaning type air filtering material and a preparation method thereof. The air filtering material comprises an inflow surface sub-micron fiber layer with a surface filtering effect, a supporting region with a supporting effect and a mixed region located between the sub-micron filter layer and the supporting region. The mixed region is formed when the sub-micron fiber layer and the supporting region are formed at one step via a double-layer headbox. The sub-micron fiber layer and the supporting region of the self-cleaning type air filtering material are combined in a natural interweaving mode, the self-cleaning type air filtering material has certain bonding strength and is not easy to be damaged and fall, sub-micron fibers realize high-precision filtering, simultaneously, particles filtered by the sub-micron fibers can be easily blown away via reversely blowing airflow, and accordingly a filtering performance is recovered. Accordingly, the air filtering material is quite applicable to a self-cleaning type filtering system.

Description

technical field [0001] The invention belongs to the technical field of filtration, and relates to a self-cleaning air filter material and a preparation method thereof. Background technique [0002] Air filter materials are commonly used in air purification systems such as air circulation systems and internal combustion engine air filters. With the rapid development of modern industry, the requirements for the cleanliness of the environment are getting higher and higher. In order to achieve a high level of air cleanliness, the requirements for the filtration performance of the selected filter materials are also getting higher and higher. In order to meet the demand, some composite filter materials have appeared. The strength of the electrospun layer formed by the existing electrospinning technology is too weak, it is easy to peel off or be damaged, and the durability is not good; while the strength of the melt-blown fiber layer formed by the melt-blown technology is not good...

Claims

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Application Information

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IPC IPC(8): B01D39/16
Inventor 胡健梁云王宜曾靖山
Owner FIBRWAY MATERIALS SCI & TECH DEV CO LTD
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