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Composite filtering material and applications thereof

A composite filtration and substrate technology, applied in filtration and separation, dispersed particle filtration, synthetic resin layered products, etc., can solve the problems of reducing filtration resistance, low specific surface area of ​​blanking materials, poor filtration efficiency, etc., and achieves less cleaning times. , The effect of good dust collection efficiency and long service life

Inactive Publication Date: 2013-03-06
TORAY FIBER RES INST(CHINA) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the filter material of composite ultrafine short fibers described in publication number CN201643872U, glass ultrafine short fibers, polyphenylene sulfide ultrafine short fibers and polytetrafluoroethylene are melt-blown and hot-pressed on the end face of the surface layer. Although the composite layer formed by ethylene ultra-fine short fibers can also achieve good surface filtration of the filter material, reduce filtration resistance, reduce energy consumption, and prolong the service life of the filter material, the ultra-fine short fibers obtained by the melt-blown method The diameter of the fiber is higher than that of the electrospinning method, so that the specific surface area of ​​the blanking material is low, and the filtration efficiency is worse than that of the composite filter material obtained by the electrospinning method

Method used

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  • Composite filtering material and applications thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Spray the polyphenylene sulfide spinning liquid onto the upper surface of the following substrate by electrospinning to form polyphenylene sulfide fibers with an average diameter of 400 nm, and then make them pile up into a dust-repellent layer with an average pore diameter of 3 μm.

[0041] The preparation method of the base material that constitutes the composite filter material of the present invention is as follows: adopt the PPS staple fiber of denier 2.0dtex (13.8 μm of average fiber diameter), length 51mm to make warp direction density 36 / 2.54cm, weft density 15 / The 2.54cm plain weave fabric is used as the middle fabric reinforcement layer, and then the upper and lower layers are laminated at 190g / m 2 The staple fiber net layer of weight per unit area, the upper and lower two layers of staple fiber net layer are all made of 100wt% fineness 2.2dtex (fiber average diameter 14.5 μ m), after the PPS staple fiber with a length of 51mm is opened and carded. 50 pcs / cm ...

Embodiment 2

[0044] The polyphenylene sulfide spinning solution is sprayed onto the upper surface of the following substrates by electrospinning to form polyphenylene sulfide fibers with an average diameter of 600nm, and then pile them into polyphenylene sulfide with an average pore diameter of 4.2μm Fiber web layer, the prepared fiber web layer is used as the dust-receiving layer of the composite filter material of the present invention.

[0045] The difference between the preparation method of the base material constituting the composite filter material of the present invention and embodiment 1 is that the upper and lower two layers of short fiber web layers of the base material are all made of 100wt% fineness 3.0dtex (fiber mean diameter 16.9 μm), length 51mm After the PPS staple fiber is opened and carded, it is cut at 50 fibers / cm 2 It is obtained by needle punching at a needle density, and then the intermediate fabric reinforcement layer and the above-mentioned upper and lower layers...

Embodiment 3

[0048] The polyphenylene sulfide spinning liquid is sprayed onto the upper surface of the following substrates by electrospinning to form polyphenylene sulfide fibers with an average diameter of 800 nm, and then pile them into polyphenylene sulfide with an average pore diameter of 6.5 μm Fiber web layer, the prepared fiber web layer is used as the dust-receiving layer of the composite filter material of the present invention.

[0049] The difference between the preparation method of the base material that constitutes the composite filter material of the present invention and embodiment 1 is that the upper and lower two layers of short fiber web layers of the base material are all made of 100wt% fineness 7.8dtex (the average fiber diameter is 27.2 μm), and the length After the 76mm PPS staple fiber is opened and carded, the 2 It is obtained by needle punching at a needle density, and then the intermediate fabric reinforcement layer and the above-mentioned upper and lower layers...

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Abstract

The invention discloses a composite filtering material and applications thereof. The composite filtering material comprises an ahead dust layer and a base material, wherein the ahead dust layer is formed by directly piling up polyphenylene sulfide fiber into nets; and the base material comprises a fabric reinforced layer in the middle and heat-resistant short fiber nets laminated up and down. The composite filtering material has the characteristics of being high in collection efficiency, low in pressure loss, and long in service life and filtering atmospheric microparticles (PM2.5) in a city by 100%.

Description

technical field [0001] The invention relates to a composite filter material and its application. Background technique [0002] With the acceleration of my country's industrial process, the application of filter materials is becoming more and more extensive, and the requirements for them are also getting higher and higher. Because traditional filter materials have different difficulties in terms of filtration efficiency, filter layer resistance and dust particle size, this requires us to create new filter materials. As we all know, the filtration efficiency of the filter material is directly related to its pore size, and the pore size will directly affect the filtration efficiency. [0003] Although traditional film-coated filter materials have high filtration efficiency, the film production process is relatively complicated, and the microporous surface of the film is easily damaged, or the film may fall off, affecting the use effect. [0004] In the publication number CN29...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/14B01D46/02B32B27/02B32B27/12
Inventor 席群纪舜卿顾立霞
Owner TORAY FIBER RES INST(CHINA) CO LTD
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