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High-efficiency and low-resistance air filter material made of special-shaped melt-blown fibers

An air filter material and melt-blown fiber technology, applied in the field of industrial textiles, can solve the problems of inability to meet PM2.5 fine filtration requirements, inability to realize industrial production, general efficiency and resistance, and achieve low production cost, High feasibility, the effect of little change in rate resistance

Inactive Publication Date: 2017-01-11
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the filter material prepared by electrospinning nanofibers, although the filtration efficiency is high, the filtration resistance is quite large; the material strength is extremely low, not strong, and easy to damage; and the efficiency and output are low, and industrial production cannot be realized.
Conventional melt-blown fibers are used as raw materials to prepare filter materials, and the efficiency and resistance are average, which cannot meet the fine filtration requirements of PM2.5

Method used

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  • High-efficiency and low-resistance air filter material made of special-shaped melt-blown fibers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A high-efficiency and low-resistance air filter material prepared from special-shaped melt-blown fibers. The preparation method is: the surface density is 60g / m 2 The cross-section is triangular PET chemical fiber with 80g / m 2 The cross-section of the PET chemical fiber is triangular to prepare a fluffy fiber web by carding, which is used as a coarse filter layer and a fine filter layer in turn. Prepare the middle layer with an area density of 20g / m 2 PP triangular meltblown fibers. The coarse filter part 1, the support part 2, and the fine filter part 3 are arranged in order from top to bottom, and the acupuncture depth is 7 mm, and the acupuncture density is 432 needles / cm 2 Acupuncture reinforcement is carried out under certain conditions, and the various parts of the filter material are connected to form a high-efficiency and low-resistance air filter material. Its structure is as follows: figure 1 shown.

[0022] Use (LZC-K 1 Filter material comprehensive perf...

Embodiment 2

[0024] A high-efficiency and low-resistance air filter material prepared from special-shaped melt-blown fibers. The preparation method is: the surface density is 50g / m 2 The cross-section is triangular and circular mixed with PET chemical fiber and 75g / m 2 The cross-section is triangular and circular mixed with PET chemical fibers to prepare fluffy webs by carding, which are used as coarse filter layer and fine filter layer in turn. Prepare the middle layer with an area density of 30g / m 2 PP dumbbell-shaped melt-blown fibers. The coarse filter part 1, the support part 2, and the fine filter part 3 are arranged in order from top to bottom, and the acupuncture depth is 6 mm, and the acupuncture density is 450 needles / cm 2 Acupuncture reinforcement is carried out under certain conditions, and the various parts of the filter material are connected to form a high-efficiency and low-resistance air filter material. Its structure is as follows: figure 1 shown.

[0025] Use (LZC-K ...

Embodiment 3

[0027] A high-efficiency and low-resistance air filter material prepared from special-shaped melt-blown fibers. The preparation method is: the surface density is 65g / m 2 The cross-section is triangular PET chemical fiber with 80g / m 2 The cross-section is triangular and circular mixed with PET chemical fibers to prepare fluffy webs by carding, which are used as coarse filter layer and fine filter layer in turn. Prepare the middle layer with an area density of 25g / m 2 PP trilobal melt blown fiber. The coarse filter part 1, the support part 2, and the fine filter part 3 are arranged in order from top to bottom, and the acupuncture depth is 5 mm, and the needle density is 420 needles / cm 2 Acupuncture reinforcement is carried out under certain conditions, and the various parts of the filter material are connected to form a high-efficiency and low-resistance air filter material. Its structure is as follows: figure 1 shown.

[0028] Use (LZC-K 1 Filter material comprehensive per...

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Abstract

The invention discloses a high-efficiency low-resistance air filter material prepared form special-shaped melt-blown fiber and a preparation method of the high-efficiency low-resistance air filter material. The high-efficiency low-resistance air filter material is characterized in that a coarse filtration part, a supporting part and a fine filtration part are sequentially arranged from top to bottom to form a filter material adopting a sandwich structure; needling is performed under the conditions that the needling depth ranges from 5 mm to 7 mm and the needling density ranges from 390 needles per cm<2> to 480 needles per cm<2>, and all parts of the filter material are connected to form the high-efficiency low-resistance air filter material; the coarse filtration part and the fine filtration part are made from chemical fiber and combed into net-shaped structure, and the supporting part is made from the special-shaped melt-blown fiber. The high-efficiency low-resistance air filter material has high filter efficiency, the filter resistance is lower, the manufacturing cost is low, and the process is simple and environment-friendly; the special-shaped melt-blown fiber is used for preparing the filter material for the first time, and a great breakthrough is made in the field of filter materials.

Description

technical field [0001] The invention relates to a high-efficiency and low-resistance air filter material prepared by special-shaped melt-blown fibers, which belongs to the technical field of industrial textiles. Background technique [0002] With the rapid development of transportation and industry, pollution also occurs, especially air pollution has been listed as one of the three major pollutions in the world, with great harm and impact. Inhalation of low-quality air damages health and induces various diseases, especially the sub-health caused by smog hotspots has attracted much attention recently. Filter materials have become a necessary product in industry and life. The techniques for producing filter materials include: weaving, knitting, non-woven, and electrospinning. At present, the types of fibers used to prepare air filter materials are mainly melt-blown fibers, spunbond fibers, and electrospun fibers. Among them, the cross-sectional shape of melt-blown fibers is r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D39/16B32B5/06
Inventor 张小林张初阳
Owner DONGHUA UNIV
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