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Oily air filtering material as well as preparation method and application thereof

An air filter material and oil-based technology, applied in the field of oil-based air filter material and its preparation, can solve the problems of low filtering oily particles, low filtering efficiency, short service life, etc., and achieve low air resistance, increase dust holding capacity, and improve use. effect of life

Pending Publication Date: 2021-08-06
上海柔维材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to propose a kind of oily air filter material with low air resistance, stable effect of filtering oily particles and high dust holding capacity and its Preparation method and application

Method used

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  • Oily air filtering material as well as preparation method and application thereof
  • Oily air filtering material as well as preparation method and application thereof

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preparation example Construction

[0038] The present invention also provides a method for preparing the oily air filter material as described above. The preparation process of the oily air filter material is relatively simple, and the prepared oily air filter material has high dust holding capacity, high filtration efficiency, and low air filtration resistance. And the advantage of being able to regenerate and reuse it many times. Such as figure 2 Shown, its preparation method specifically comprises the following steps:

[0039](1) Prepare the pre-solution: dissolve one or more of the polymer PVDF, PS, TPU, PA6, and PAN particles in the solvent, stir at 45-70°C for 2-4 hours, and prepare the pre-solution;

[0040] (2) Solution method air spinning: the pre-solution configured in step (1) is drafted by solution method air spinning process to form nanofibers with high aspect ratio, collected, adhered to the non-woven fabric layer, and oriented Or a nanofiber filter layer randomly arranged to form a non-woven f...

Embodiment 1

[0048] Provide an oily air filter material, the non-woven layer adopts 15g / m 2 PP spun-bonded non-woven fabric, the melt-blown cloth layer adopts melt-blown cloth with a filtration efficiency of 85%, and the hot-air cotton layer adopts 30g / m 2 The hot air cotton, the sponge layer adopts 20g / m 2 ordinary sponge. Specifically, its preparation method includes the following steps:

[0049] (1) Configure the pre-solution: add an appropriate amount of PAN powder into the DMF solvent, keep stirring at 60°C for 4 hours, and finally obtain a pre-solution of 13% PAN;

[0050] (2) Solution method air spinning: place the non-woven fabric layer on the collector, set the collection distance to 20cm, the wind force to 280m / min, and the single needle liquid supply speed to 2.0ml / h. The solution is drawn by the solution method air spinning process to form nanofibers with high aspect ratio, collected and adhered to the non-woven fabric layer, and oriented or randomly arranged to form a nanof...

Embodiment 2

[0055] Provide an oily air filter material, the non-woven layer adopts 15g / m 2 PP spunbonded non-woven fabric, the melt-blown cloth layer adopts melt-blown cloth with a filtration efficiency of 65%, and the hot-air cotton layer adopts 40g / m 2 The hot air cotton, the sponge layer adopts 40g / m 2 ordinary sponge. Specifically, its preparation method includes the following steps:

[0056] (1) Configure the pre-solution: add an appropriate amount of PVDF powder into the DMF solvent, keep stirring at 55°C for 4 hours, and prepare the pre-solution of 16% PVDF;

[0057] (2) Solution method air spinning: place the non-woven fabric layer on the collector, set the collection distance to 20cm, the wind force to 350m / min, and the single-needle liquid supply speed to 2.0ml / h. The solution is drawn by the solution method air spinning process to form nanofibers with high aspect ratio, collected and adhered to the non-woven fabric layer, and oriented or randomly arranged to form a nanofiber...

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Abstract

The invention discloses an oily air filtering material as well as a preparation method and application thereof. The oily air filtering material comprises a non-woven fabric layer, a nanofiber filtering layer, a melt-blown fabric layer and a hot air cotton layer which are sequentially stacked from top to bottom, the nanofiber filtering layer is of a nanofiber non-woven fiber net structure prepared by adopting a solution method airflow spinning process, and the non-woven fabric layer, the nanofiber filter layer, the melt-blown fabric layer and the hot air cotton layer are compounded into a whole in an ultrasonic welding manner. The nanofiber filter layer and the melt-blown cloth layer are adopted as an efficient filter layer, the filter mechanism is complementary, the air resistance is low, the filter effect is high, the attenuation of the filter effect is slow, and particularly the filter effect on oily particles is more stable. The preparation process is relatively simple, and the filtering material has the advantages of high dust holding capacity, high filtering efficiency, low air filtering resistance, low use cost, safety, environment friendliness and capability of being regenerated and repeatedly used for multiple times.

Description

technical field [0001] The invention relates to the technical field of air filtration, in particular to an oily air filter material and its preparation method and application. Background technique [0002] Moxa moxibustion covers a wide range of recuperation and has no toxic side effects. It is a reasonable treatment method in traditional Chinese medicine. It can reasonably regulate the physiological functions of the body, improve the body's resistance, treat diseases and prevent infectious diseases. The symptoms treated by moxibustion are common, and it has the wonderful effect of "one wick sticks to the skin until it hurts, and one moxibustion acupoint cures the ailment immediately". [0003] The moxibustion machines in the moxibustion room on the market generally have the characteristics of a large amount of smoke, and the oiliness of the moxibustion smoke makes the filtration efficiency of the conventional air filter material low, requiring frequent replacement of the fi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/16B01D46/00B32B27/02B32B27/32B32B27/36B32B27/40B32B27/34B32B27/30B32B27/08B32B27/12B32B5/02B32B5/26B32B5/18B32B33/00B32B37/00B32B37/12
CPCB01D39/16B01D39/1623B01D46/00B32B5/022B32B5/26B32B5/028B32B5/18B32B5/245B32B33/00B32B37/00B32B37/12B01D2239/065B01D2239/10B32B2262/0253B32B2262/0284B32B2262/0238B32B2262/023B32B2262/0292B32B2262/0261
Inventor 韩若冰王皓伍晖时楠刘正廉王海杨
Owner 上海柔维材料科技有限公司
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