CN105771427B - A kind of air filtration non-woven electret filtering material - Google Patents
A kind of air filtration non-woven electret filtering material Download PDFInfo
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- CN105771427B CN105771427B CN201610233859.6A CN201610233859A CN105771427B CN 105771427 B CN105771427 B CN 105771427B CN 201610233859 A CN201610233859 A CN 201610233859A CN 105771427 B CN105771427 B CN 105771427B
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
- B01D39/1607—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous
- B01D39/1623—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
- D01D5/30—Conjugate filaments; Spinnerette packs therefor
- D01D5/34—Core-skin structure; Spinnerette packs therefor
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
- D01D5/30—Conjugate filaments; Spinnerette packs therefor
- D01D5/36—Matrix structure; Spinnerette packs therefor
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
- D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
- D06C7/00—Heating or cooling textile fabrics
- D06C7/02—Setting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/02—Types of fibres, filaments or particles, self-supporting or supported materials
- B01D2239/0216—Bicomponent or multicomponent fibres
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/10—Filtering material manufacturing
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Materials (AREA)
Abstract
The invention discloses a kind of air filtration non-woven electret filtering material, equally distributed three-dimensional space network structure is formed by the PET superfine fibres of 0.06D and the PE/PET core-skin composite fibers of 3D, the fiber that core-skin composite fiber is in contact with it forms connection node, and PTFE coats are set on the surface of superfine fibre and core-skin composite fiber.The preparation method of the non-woven electret filtering material is：PET/PET figured sea-island staple fibres and PE/PET core-skin types composite short fiber are mixed with certain mass ratio, after combing, are formed through acupuncture networking, lye ablation, roll compacting washing, PTFE emulsion dipping, tentering thermal finalization and cooling and solidifying.The non-woven electret filtering material of the present invention has the advantages that intensity height, dimensionally stable, resistance are small；The porosity of filtering material is high, aperture is small and uniform, good permeability；Electron work functon is high, dielectric constant is low, good for the Electrostatic Absorption effect of PM2.5 dust；With ultra-hydrophobicity, connect the effect that wet air can not weaken its Electrostatic Absorption.
Description
Technical field
The present invention relates to Material Field, is specifically a kind of air filtration non-woven electret filtering material.
Background technology
People are for PM2.5 in air（Fine particle of the particle diameter below 2.5 microns）Index growing interest.PM2.5
The residue discharged during industrial production and motor vehicle exhaust emission etc. is mainly derived from, mostly containing Toxics such as heavy metals
Matter, bronchus can be directly entered after being inhaled into human body, disturb the gas exchanges of lung, and initiation includes asthma, bronchitis and the heart
The disease of angiosis etc..In addition, floating particle is also inhalant allergens in the air such as pollen of about 20 ~ 40 μm of particle diameter
Main source, easily leads to allergic disease, the allergic symptoms such as nose is itched, skin is itched, eyes are itched, asthma and cough occurs.How to remove
Go these dusty gases become one it is in the urgent need to address the problem of.
Non-woven filter material has been widely used for air filtration industry because its work flow is short, cost is low.Existing market
Upper air filtration is with non-woven electret filtering material based on acupuncture cotton nonwoven fabrics and heat bonding non-woven fabrics.Acupuncture cotton nonwoven fabrics
Last a long time, but its arresting efficiency is than relatively low, and intensity is not high, is especially subject to Inter-fiber voids during high air quantity to become larger,
Poor filtration effect.It is thermally bonded non-woven fabrics to reinforce generally by hot rolling roller mode, in Chinese publication CN101058960
A kind of heat bonding non-woven fabrics is disclosed, although refer to use " 10~25 microns of small diameter fibers " and " 30~50 microns
The blended structure of large-diameter fiber ", and the core-skin composite fiber in " low-melting-point resin portion " is refer to, so-called height can be reached
The advantages of rigidity, high-tensile, but it is not specifically described the proportioning and thickness requirement of specific each kinds of fibers, Er Qiere
The mode that roll is reinforced causes outer layer fiber to be bonded, and for inner fiber without the phenomenon being bonded, shortcoming is venting quality decline, resistance
Increase, permeability and filter efficiency are relatively low.What is more important, the aperture of filtering material is with respect to that made of conventional fibre
For a little fine particles or bigger than normal, dust particale cannot be obstructed effectively, therefore conventional fibre non-woven filter material is difficult
Reach the index request of filtering PM2.5.
At present, non-woven cloth finished product is made through acupuncture or spun lacing in islands-in-sea bicomponent fibre, is then reduced fibrillation by caustic soda
Superfine fibre filtrate can be obtained, filtering accuracy increases, but still bad for the effect of PM2.5 dust-filterings.It is Chinese public
Open and a kind of PET/PET sea-island fibres floor height refined filtration material is disclosed in patent CN202654812, for PM2.5 dust-filtering problems
Make moderate progress, but since the diameter of superfine fibre is thinner, yielding in high air quantity, there are dimensional stability, filtering accuracy
The problem of undesirable.A kind of system of well-pressed Ding Dao islands woven fabric Wiping material is disclosed in Chinese publication CN101058960
Make method, the dimensional stability that the method mixed using island fiber with figured sea-island and polypropylene short fiber improves non-woven material will
Ask, but the patented method is only capable of solving the fluffy and well-pressed characteristic that Wiping material needs, and still can not solve air filtration
Filtering accuracy problem needed for material.To find out its cause, the filter hole as the superfine fibre filtrate prepared by islands-in-sea bicomponent fibre
Footpath comparatively PM2.5 particles or bigger than normal, dust particale is still easy to permeable material and gets in.
Grit is trapped using electrostatic force, has the advantages that filter efficiency is high, resistance is small and antibacterial, air filting material
Electret fiber is commonly used to achieve the purpose that Electrostatic Absorption micronic dust, however conventional electret method for example corona discharge method, thermal poling method,
It is the complex process such as low-energy electron beam blast technique, with high costs.A kind of high-performance is disclosed in Chinese publication CN203862028
Terylene filtrate, its filtrate pass through PTFE lotion impregnations, make use of the corrosion resistance of PTFE and filter deashing, but
Terylene base cloth layer warp thread adds a polyester filament with stainless steel wire mixed yarn to eliminate electrostatic at interval of 10mm, obtains antistatic
Terylene filtrate, can not realize the purpose of Electrostatic Absorption micronic dust.
Therefore, for the requirement for crossing PM2.5 dust in air filtering, it is badly in need of exploitation and is suitable for automobile air conditioner filter, family
With air purifier, building filter for air condition, toilet, filtration system used for vehicle non-woven electret material.
The content of the invention
It is an object of the invention to provide a kind of air filtration non-woven electret filtering material, to solve above-mentioned background
The problem of being proposed in technology.
To achieve the above object, the present invention provides following technical solution：
A kind of air filtration non-woven electret filtering material, by the PET superfine fibres of 0.06D and the PE/PET skins of 3D
Core composite fibre forms equally distributed three-dimensional space network structure, and the fiber that core-skin composite fiber is in contact with it forms joint
Point, PTFE coats are set on the surface of superfine fibre and core-skin composite fiber.
As the further scheme of the present invention：The preparation method of air filtration non-woven electret filtering material
For：PET/PET figured sea-island staple fibres and PE/PET core-skin types composite short fiber are mixed with certain mass ratio, after combing, warp
Acupuncture networking, lye ablation, roll compacting washing, PTFE emulsion dipping, tentering thermal finalization and cooling and solidifying form.
As further scheme of the invention：The PET/PET figured sea-island staple fibres are fixed for 3.5D × 51mm
Island sea-island staple fiber, wherein sea component are water-soluble modified PET, and island component is routine PET, and Hai Yu islands ratio is 30: 70, island number
For 37.
As further scheme of the invention：The PE/PET core-skin types composite short fiber is 3.5D × 51mm core-skins
Type composite short fiber, wherein skin component are PE, and core component is that routine PET, Pi Yuxin ratio are 20: 80.
As further scheme of the invention：The PET/PET figured sea-island staple fibres and PE/PET core-skin types
The mass ratio of composite short fiber is 20:80.
As further scheme of the invention：Described lye ablation refer to web containing being immersed in containing 8%NAOH and
In the aqueous solution of 0.6wt% cetyl trimethylammonium bromides, then by 95 DEG C of steam box be reduced within 30 minutes.
As further scheme of the invention：In the PTFE emulsion dipping, the solid increment of web is 10%.
As further scheme of the invention：The tentering heat setting temperature is 135 DEG C -180 DEG C.
As further scheme of the invention：The grammes per square metre of the non-woven electret filtering material is 330g/m2。
Compared with prior art, the beneficial effects of the invention are as follows：
（1）By the minor diameter superfine fibre of 0.06D and the major diameter core-sheath of 3D in non-woven electret filtering material
Fiber forms equally distributed three-dimensional space network structure, and wherein the PE in major diameter core-skin composite fiber is under heat setting temperature
Connection node is formed with the fiber that other are contacted, plays the supporting function of three-dimensional space network, thus has filtering material strong
The advantages of spending height, dimensionally stable, small resistance；
（2）The diameter of sea-island fibre obtained superfine fibre after the molten processing of over-subtraction in non-woven electret filtering material
It is small, specific surface area is big, therefore the porosity of filtering material is high, aperture is small and uniform, good permeability；
（3）Non-woven electret filtering material forms one layer due to passing through PTFE emulsion impregnation, in fiber surface
PTFE coats, electron work functon is high, dielectric constant is low, big with the frictional static voltage of air, especially as air mistake
It is especially good for the Electrostatic Absorption effect of PM2.5 dust when filtering electret；When the electrostatic formed with windage can be long
Between do not cut down, the C-F key bond energys of PTFE are very strong, and free energy is low, have a ultra-hydrophobicity, and even wet air can not weaken
The effect of its Electrostatic Absorption.
Brief description of the drawings
Fig. 1 is the structure diagram of air filtration non-woven electret filtering material.
Fig. 2 is the structural representation of PE/PET core-sheath compound fibres in air filtration non-woven electret filtering material
Figure.
Fig. 3 is the structure diagram of superfine fibre in air filtration non-woven electret filtering material.
Embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment, belongs to the scope of protection of the invention.
Please refer to Fig.1~3, in the embodiment of the present invention, a kind of air filtration non-woven electret filtering material, electret
Non-woven filter material forms equally distributed three by the PET superfine fibres 2 of 0.06D and the PE/PET core-skin composite fibers 1 of 3D
Dimension space network structure, the fiber that core-skin composite fiber is in contact with it form connection node, fine in superfine fibre and core-sheath
There are PTFE coats on the surface of dimension.
The preparation method of non-woven electret filtering material is：3.5D × 51mm PET/PET figured sea-island staple fibres and
3.5D × 51mm PE/PET core-skin type composite short fibers are with 20:80 mass ratio mixing, after combing, disappear through acupuncture networking, lye
Melt, roll compacting washing, PTFE emulsion dipping, tentering thermal finalization and cooling and solidifying form, wherein extra large group of figured sea-island staple fibre
It is divided into water-soluble modified PET, island component is routine PET, and Hai Yu islands ratio is 30: 70, and island number is 37；Core-skin type composite short fiber
Skin component is PE, and core component is that routine PET, Pi Yuxin ratio are 20: 80；The web that acupuncture is formed, which contains, to be immersed in containing 8%NAOH
In the aqueous solution of 0.6wt% cetyl trimethylammonium bromides, then by 95 DEG C of steam box be reduced within 30 minutes, through roll compacting
PTFE emulsion is impregnated after washing, the solid increment for making web is 10%, then the thermal finalization at a temperature of 135 DEG C -180 DEG C；Electret
The grammes per square metre of body non-woven filter material is 330g/m2。
According to the Arizona micronic dust mensurations of international standard ISO 12103-1, non-woven electret filtering material of the present invention
Filter efficiency is significantly better than traditional filter material for PM1-PM3 for PM1-PM3 grade micronic dust stop rate >=99.99%, filter efficiency
The level of grade micronic dust stop rate ＜ 98%.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Profit requires rather than described above limits, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.Any reference numeral in claim should not be considered as to the involved claim of limitation.
Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each embodiment is only wrapped
Containing an independent technical solution, this narrating mode of specification is only that those skilled in the art should for clarity
Using specification as an entirety, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
It is appreciated that other embodiment.
Claims (6)
1. a kind of air filtration non-woven electret filtering material, it is characterised in that by the PET superfine fibres and 3D of 0.06D
PE/PET core-skin composite fibers form equally distributed three-dimensional space network structure, the fiber that core-skin composite fiber is in contact with it
Connection node is formed, PTFE coats are set on the surface of superfine fibre and core-skin composite fiber；The air filtration electret
The preparation method of non-woven filter material is：PET/PET figured sea-island staple fibres and PE/PET core-skin types composite short fiber with
Certain mass than mixing, comb after, through acupuncture networking, lye ablation, roll compacting washing, PTFE emulsion impregnate, tentering thermal finalization and
Cooling and solidifying forms, and the PET/PET figured sea-island staple fibres are 3.5D × 51mm figured sea-island staple fibres, wherein sea
Component is water-soluble modified PET, and island component is routine PET, and Hai Yu islands ratio is 30：70, island number is 37, the PE/PET core-skins
Type composite short fiber is 3.5D × 51mm core-skin type composite short fibers, and wherein skin component is PE, and core component is routine PET, skin with
Core ratio is 20：80.
2. air filtration according to claim 1 non-woven electret filtering material, it is characterised in that the PET/
The mass ratio of PET figured sea-island staple fibres and PE/PET core-skin type composite short fibers is 20：80.
3. air filtration according to claim 1 non-woven electret filtering material, it is characterised in that the lye
Ablation, which refers to contain web, to be immersed in the aqueous solution containing 8%NAOH and 0.6wt% cetyl trimethylammonium bromides, then is passed through
95 DEG C of steam box be reduced within 30 minutes.
4. air filtration according to claim 1 non-woven electret filtering material, it is characterised in that the PTFE
In lotion dipping, the solid increment of web is 10%.
5. air filtration according to claim 1 non-woven electret filtering material, it is characterised in that the tentering
Heat setting temperature is 135 DEG C -180 DEG C.
6. air filtration according to claim 1 non-woven electret filtering material, it is characterised in that the electret
The grammes per square metre of non-woven filter material is 330g/m2。
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610233859.6A CN105771427B (en) | 2016-04-16 | 2016-04-16 | A kind of air filtration non-woven electret filtering material |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610233859.6A CN105771427B (en) | 2016-04-16 | 2016-04-16 | A kind of air filtration non-woven electret filtering material |
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| CN105771427A CN105771427A (en) | 2016-07-20 |
| CN105771427B true CN105771427B (en) | 2018-05-15 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3585499A4 (en) * | 2017-02-21 | 2020-12-23 | Hollingsworth & Vose Company | Electret-containing filter media |
| CN107174868B (en) * | 2017-05-02 | 2019-06-04 | 杭州创克洛环境科技有限公司 | A kind of vehicle-mounted air purification piece and preparation method thereof |
| CN110812947B (en) * | 2019-10-18 | 2022-02-08 | 东莞市亿茂滤材有限公司 | Electret non-woven filter material with cavity structure and preparation method thereof |
| CN111467879A (en) * | 2020-04-09 | 2020-07-31 | 立赫产业有限公司 | Multifunctional electrostatic electret filter material and preparation method thereof |
| CN112387008B (en) * | 2020-10-26 | 2023-08-22 | 安徽中电环保材料股份有限公司 | Antioxidant PPS (polyphenylene sulfide) filter material and preparation process thereof |
| CN112191051B (en) * | 2020-11-19 | 2022-12-16 | 河南科高新材料有限公司 | Non-static mask filtering membrane and preparation method thereof |
| CN114150437A (en) * | 2021-12-10 | 2022-03-08 | 东莞市利韬过滤材料有限公司 | PET dry method skeleton composite melt-blown purification non-woven fabric and preparation process thereof |
| CN114504951B (en) * | 2022-01-24 | 2023-09-22 | 华南理工大学 | Recyclable electret filter membrane and preparation method, cleaning and charge regeneration method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202654812U (en) * | 2012-02-17 | 2013-01-09 | 抚顺恒益科技滤材有限公司 | PET/PET (polyethylene glycol terephthalate) high-precision filter material with sea-island fiber layer |
| CN103422254A (en) * | 2012-05-23 | 2013-12-04 | 东丽纤维研究所（中国）有限公司 | Heat-bonded non-woven fabric and manufacturing method and application thereof |
| CN103781956A (en) * | 2011-06-30 | 2014-05-07 | 3M创新有限公司 | Non-woven electret fibrous webs and methods of making same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3851894B2 (en) * | 2002-07-31 | 2006-11-29 | 大和紡績株式会社 | Meltblown nonwovens, laminated meltblown nonwovens, and wipers |
| CN1528500A (en) * | 2003-10-16 | 2004-09-15 | 同济大学 | Method for preparing porous filter membrane of polytetrafluoroethylene electret |
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| CN100509108C (en) * | 2007-06-12 | 2009-07-08 | 桐乡市健民过滤材料有限公司 | Composite electret fiber filtering material |
| CN103866485B (en) * | 2012-12-11 | 2017-07-28 | 东丽纤维研究所（中国）有限公司 | One kind heat bonding non-woven fabrics and its production method and purposes |
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2016
- 2016-04-16 CN CN201610233859.6A patent/CN105771427B/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103781956A (en) * | 2011-06-30 | 2014-05-07 | 3M创新有限公司 | Non-woven electret fibrous webs and methods of making same |
| CN202654812U (en) * | 2012-02-17 | 2013-01-09 | 抚顺恒益科技滤材有限公司 | PET/PET (polyethylene glycol terephthalate) high-precision filter material with sea-island fiber layer |
| CN103422254A (en) * | 2012-05-23 | 2013-12-04 | 东丽纤维研究所（中国）有限公司 | Heat-bonded non-woven fabric and manufacturing method and application thereof |
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