CN107097474A - A kind of filtering material and its production method and purposes containing perforated membrane - Google Patents
A kind of filtering material and its production method and purposes containing perforated membrane Download PDFInfo
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- CN107097474A CN107097474A CN201610093254.1A CN201610093254A CN107097474A CN 107097474 A CN107097474 A CN 107097474A CN 201610093254 A CN201610093254 A CN 201610093254A CN 107097474 A CN107097474 A CN 107097474A
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- 239000000463 material Substances 0.000 title claims abstract description 233
- 238000001914 filtration Methods 0.000 title claims abstract description 182
- 239000012528 membrane Substances 0.000 title claims abstract description 168
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 239000010410 layer Substances 0.000 claims abstract description 183
- 239000004745 nonwoven fabric Substances 0.000 claims abstract description 143
- 238000010422 painting Methods 0.000 claims abstract description 8
- 239000000843 powder Substances 0.000 claims abstract description 8
- 239000002344 surface layer Substances 0.000 claims abstract description 5
- 239000004566 building material Substances 0.000 claims abstract description 4
- 230000035699 permeability Effects 0.000 claims description 81
- 239000002245 particle Substances 0.000 claims description 34
- 238000002360 preparation method Methods 0.000 claims description 25
- 239000006185 dispersion Substances 0.000 claims description 22
- 238000007731 hot pressing Methods 0.000 claims description 16
- 230000003068 static effect Effects 0.000 claims description 13
- 238000002347 injection Methods 0.000 claims description 8
- 239000007924 injection Substances 0.000 claims description 8
- 238000007639 printing Methods 0.000 claims description 7
- 238000005507 spraying Methods 0.000 claims description 5
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 3
- 239000004965 Silica aerogel Substances 0.000 claims description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 2
- 239000000428 dust Substances 0.000 abstract description 23
- 239000011248 coating agent Substances 0.000 abstract description 4
- 238000000576 coating method Methods 0.000 abstract description 4
- 229940058401 polytetrafluoroethylene Drugs 0.000 description 26
- 239000004810 polytetrafluoroethylene Substances 0.000 description 26
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 25
- 239000006229 carbon black Substances 0.000 description 23
- -1 polytetrafluoroethylene Polymers 0.000 description 21
- 239000007788 liquid Substances 0.000 description 20
- 239000008188 pellet Substances 0.000 description 20
- 239000000835 fiber Substances 0.000 description 19
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- NIXOWILDQLNWCW-UHFFFAOYSA-N Acrylic acid Chemical compound OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 9
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- 238000012545 processing Methods 0.000 description 9
- 150000001875 compounds Chemical class 0.000 description 8
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- 238000012360 testing method Methods 0.000 description 6
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 239000011148 porous material Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 150000001336 alkenes Chemical class 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 229920000620 organic polymer Polymers 0.000 description 4
- 230000006798 recombination Effects 0.000 description 4
- 238000005215 recombination Methods 0.000 description 4
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- 239000007921 spray Substances 0.000 description 4
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- 238000011068 loading method Methods 0.000 description 3
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- 230000008018 melting Effects 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000003973 paint Substances 0.000 description 3
- 229920000728 polyester Polymers 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 2
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- 239000004922 lacquer Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000003746 surface roughness Effects 0.000 description 2
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical compound FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 2
- 206010020852 Hypertonia Diseases 0.000 description 1
- 229920006266 Vinyl film Polymers 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000000498 ball milling Methods 0.000 description 1
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- 229910052799 carbon Inorganic materials 0.000 description 1
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- 239000004020 conductor Substances 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
- B32B5/022—Non-woven fabric
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
- B32B27/322—Layered products comprising a layer of synthetic resin comprising polyolefins comprising halogenated polyolefins, e.g. PTFE
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/30—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being formed of particles, e.g. chips, granules, powder
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
- B32B9/005—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising one layer of ceramic material, e.g. porcelain, ceramic tile
- B32B9/007—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising one layer of ceramic material, e.g. porcelain, ceramic tile comprising carbon, e.g. graphite, composite carbon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/03—3 layers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
- B32B2264/10—Inorganic particles
- B32B2264/107—Ceramic
- B32B2264/108—Carbon, e.g. graphite particles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2305/00—Condition, form or state of the layers or laminate
- B32B2305/02—Cellular or porous
- B32B2305/026—Porous
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2305/00—Condition, form or state of the layers or laminate
- B32B2305/10—Fibres of continuous length
- B32B2305/20—Fibres of continuous length in the form of a non-woven mat
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2327/00—Polyvinylhalogenides
- B32B2327/12—Polyvinylhalogenides containing fluorine
- B32B2327/18—PTFE, i.e. polytetrafluoroethylene
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Textile Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Filtering Materials (AREA)
Abstract
The present invention discloses a kind of filtering material containing perforated membrane and its production method and purposes, the filtering material includes spun-bonded non-woven fabrics fid layer, conductive black layer, polytetrafluoroethylporous porous membrane layer, contain conductive black layer at least one side of the spun-bonded non-woven fabrics fid layer, and it is polytetrafluoroethylporous porous membrane layer that air, which flows into surface layer, the thickness of the spun-bonded non-woven fabrics fid layer is continuously homogeneous, and the peak of spun-bonded non-woven fabrics supporting layer and the thickness difference of minimum point are less than 30 μm.The filtering material containing perforated membrane of the present invention has arresting efficiency height, running resistance is low, resistance to deashing is good, the caducous feature of dust, can be applied to painting dressing automobiles, building materials application, Hardware fitting powder body coating line field.
Description
Technical field
The present invention relates to a kind of filtering material containing perforated membrane and its production method and purposes.
Background technology
With Chinese society, the economic continuous improvement continued to develop with living standards of the people, people are to atmospheric environment
Quality requirement also more and more higher, the requirement that country discharges to waste gas is also increasingly stricter, and the application of filtering material is also more and more wider
It is general.Recovery such as the useless paint of painting workshop needs to use filtering material, filtering material in the market have only with organic poly-
Compound non-woven fabrics is as fid, but organic polymer nonwoven cloth filter only has not reached use requirement, on the one hand, by
It is higher in organic polymer non-woven fabrics resistance, charge accumulation is easily produced in use, easily causes fire in inflammable and explosive place
, there is potential safety hazard in calamity；On the other hand, in face of now strict discharge standard, simple organic polymer non-woven fabrics is not up to
To required filtering accuracy.Therefore, in order to improve these defects, given up in automotive lacquer and paint the inflammable and explosive occasions such as recovery, mainly
By carried out again after organic polymer nonwoven surface carries out conductive processing the technique of porous polytetrafluoroethyl-ne film Compound Machining come
Obtain required conducting filtration material.But do not consider conductive black particle size to mistake in conductive process
The influence of filter material material air permeability so that the conductive non-woven fabrics air permeability of preparation is low, and this non-woven fabrics is adapted for use with electric heating appliance
And in the electric heating products such as electric blanket, be not appropriate in filtering material field.
In addition, filament spunbond nonwoven cloth in the market is mainly by rough hot steel rider to laying length into the net
Silk non-woven fabrics is reinforced, and makes obtained spun-bonded continuous yarn non-woven fabrics in this way, due to the hot steel rod in constantly use
Projection reinforces weaker, so that lamination easily occurs in non-woven fabrics, reduces its service life.
Such as China publication CN2052141U discloses one kind will be with acetylene carbon black, water, 107 glue ball millings into conduction
Slurry, is applied on non-woven fabrics using applying or turning round roll coating by hand, conductive non-woven fabrics is made after drying, but due to acetylene carbon black
Particle diameter it is larger, make that obtained conductive base fabric air permeability is small, not only crushing is big in actual use but also filter efficiency is also poor,
It is not appropriate for using in filtration art.
Such as Chinese patent CN101861195A discloses a kind of filter filtration material, is compounded with gas permeability backing material poly-
Tetrafluoroethylene, so that the filtering accuracy to meet filtrate, but this filtrate resistance is larger, and filtrate in use is constantly and particle
Thing carries out friction and is also easy to produce charge accumulated, there is disaster hidden-trouble, and such a filter material can not meet the workshops such as automotive lacquer
Explosion-proof code requirement.
And for example US publication US005527569A discloses a kind of anti-static conductive filtering material, and this non-woven fabrics is by spinning
Bonded non-woven fabrics layer, metal conducting layer and conductive polytetrafluoroethylene floor are constituted, due to using metal or metal conductive oxide
Layer is directly fitted with conductive polytetrafluoroethylporous porous membrane, causes poly tetrafluoroethylene laminating fastness poor, in use constantly
Regurgitate under the effect of blowing, poly tetrafluoroethylene is easily split away off from the surface of fid, on the other hand due in polytetrafluoroethyl-ne film
In add conductive black particle so that the pore-size distribution of voided polytetrafluoroethylene film is uneven, causes final filter material filtering essence
Spend low, the defect of short life.
The content of the invention
It is an object of the invention to provide a kind of arresting efficiency is high, air permeability is high, the resistance to good mistake containing perforated membrane of deashing
Filter material material.
Another object of the present invention is to provide a kind of and polytetrafluoroethylporous porous membrane filtering easy to attach containing perforated membrane
The production method of material.
The technical solution of the present invention is as follows：The filtering material containing perforated membrane of the present invention is supported including spun-bonded non-woven fabrics
Contain conduction in material layer, conductive black layer, polytetrafluoroethylporous porous membrane layer, at least one side of the spun-bonded non-woven fabrics fid layer
Silica aerogel layer, and it is polytetrafluoroethylporous porous membrane layer that air, which flows into surface layer, the thickness of the spun-bonded non-woven fabrics fid layer is continuously equal
One, and the peak of spun-bonded non-woven fabrics supporting layer and the thickness difference of minimum point are less than 30 μm.
The confficient of static friction preferably 0.30 of spun-bonded non-woven fabrics fids layer in the filtering material containing perforated membrane of the present invention~
0.60, the coefficient of kinetic friction preferably 0.10~0.60.
The air permeability of spun-bonded non-woven fabrics fid layer is excellent under pressure 125Pa in the filtering material containing perforated membrane of the present invention
Select 30~50cm3/cm2/s。
The warp of spun-bonded non-woven fabrics fid layer, the firm softness of broadwise preferably 2800 in the filtering material containing perforated membrane of the present invention
~5000mg.
The air permeability of polytetrafluoroethylporous porous membrane is preferred under pressure 125Pa in the filtering material containing perforated membrane of the present invention
For 8~23cm3/cm2/s。
Under pressure 125Pa, the air permeability of the filtering material of the invention containing perforated membrane is preferably 4.5~15cm3/cm2/
s。
After the empty injection 1min of 2bar pressures, the air permeability conservation rate of the filtering material of the invention containing perforated membrane preferably exists
More than 95%.
The sheet resistance of the filtering material containing perforated membrane of the present invention is preferably 1.0 × 104Below Ω.
It is low that the filtering material containing perforated membrane of the present invention solves conventional conducting filtration material gas permeable degree, running resistance is big,
Resistance to deashing is poor, the problems such as dust difficulty comes off, and because supporting layer has used surfacing, the spun-bonded non-woven fabrics of no concave-convex sense are led
Electric layer employs particle diameter for micron-sized conductive black, and filter layer employs poly- the four of air permeability height and even aperture distribution
Fluoride porous film, obtained filtering material has arresting efficiency height, running resistance is low, resistance to deashing is good, dust is caducous
Feature.The filtering material containing perforated membrane of the present invention can be applied to painting dressing automobiles, building materials application, Hardware fitting powder body coating, family
The filtration arts such as electrical appliance application, apply also for the fields such as the dustless paint line of electronic product.
Embodiment
The filtering material containing perforated membrane of the present invention includes spun-bonded non-woven fabrics fid layer, conductive black layer, polytetrafluoroethyl-ne
Containing conductive black layer in alkene porous membrane layer, at least one side of the spun-bonded non-woven fabrics fid layer, and air inflow surface layer is
Polytetrafluoroethylporous porous membrane layer, the thickness of the spun-bonded non-woven fabrics fid layer is continuously homogeneous, and spun-bonded non-woven fabrics supporting layer
Peak and the thickness difference of minimum point are less than 30 μm.In view of filtering material use environment, in high wind speed, high deashing pressure
Under, it is desirable to filtering material itself have to have a certain degree of rigidity, so that filtrate will not be made because of wind speed, deashing pressure etc.
With and deform upon.The present invention improves the rigidity of filtering material, structure by using the core-sheath-type spun-bonded non-woven fabrics of highly-breathable
Sheath portion into the core sheath fibers spun-bonded non-woven fabrics is divided into the polyester of low melting point, and core is divided into dystectic polyester, so in nonwoven
In the manufacture of cloth, the partial melting of low melting point is bonded together between core sheath fibers and core sheath fibers, so as to further increase
The rigidity of spun-bonded non-woven fabrics, the core segment of another aspect core sheath fibers remains the pattern of original non-woven fabrics so that spunbond nonwoven
Cloth remains high gas permeability.If the non-woven fabrics using other materials is as supporting layer, such as needle punched non-woven fabrics, spun lacing without
Spin cloth, melt spraying non-woven fabrics, chemical adhesion non-woven fabrics.Because the firm softness of needle punched non-woven fabrics and spunlace non-woven cloth is low and not reaching makes
With requiring.It is small compared with thin and diameter additionally, due to the fiber for constituting melt spraying non-woven fabrics, close, fiber is arranged between fiber and fiber
Space is smaller between fiber, does not reach required air permeability, so will necessarily be saturating in the conductive product after conductive processing
Manner is low, and does not reach use requirement.If using chemical adhesion non-woven fabrics, adhesive will certainly be introduced, using there is adhesive
Chemical adhesion non-woven fabrics as fid after, due to final filtrate use in chemical environment, in such non-woven fabrics fid
Adhesive can go bad, support nonwoven layer be layered, so as to reduce the life-span of membrane filtering material.In addition, of the invention
Spun-bonded non-woven fabrics fids layer thickness it is continuously homogeneous, thickness here is continuous homogeneous to refer to that spun-bonded continuous yarn non-woven fabrics surface is in
Existing formation state, and without obvious sags and crests.The thickness of the spun-bonded non-woven fabrics fid layer peak of the present invention refers to entirety
The maximum value of section thickness in non-woven fabrics, the thickness of minimum point refers to the minimum value of section thickness in overall non-woven fabrics.The present invention
The thickness of spun-bonded non-woven fabrics peak and the thickness difference of minimum point must be in certain scopes, that is to say, that spun-bonded non-woven fabrics
Surface, which is visually seen up, is presented smooth state, if the thickness difference of spun-bonded non-woven fabrics surface highs and lows is more than 30
If μm, follow-up polytetrafluoroethylporous porous membrane it is compound in, on the one hand, it is uneven due to spun-bonded non-woven fabrics surface,
So that polytetrafluoroethylporous porous membrane surface tension is uneven, but also the yield rate of porous film composite filtering materials can be reduced；Separately
On the one hand, spun-bonded non-woven fabrics surface is uneven, reduces between polytetrafluoroethylporous porous membrane and spun-bonded non-woven fabrics supporting layer
Contact area so that polytetrafluoroethylporous porous membrane in actual use constantly pulse dust cleaning effect under, it is easier to from
Spun-bonded non-woven fabrics support layer surface is split away off, and reduces the service life of overall filter material.Contain perforated membrane in view of the present invention
Filtering material service life, preferably less than 25 μm of the peak of spun-bonded non-woven fabrics supporting layer and the thickness difference of minimum point.
Because polytetrafluoroethylene (PTFE) has good chemical stability, heat endurance, hydrophobicity, high-lubricity, non-stick etc.
Feature, therefore, the polytetrafluoroethylporous porous membrane being made up of polytetrafluoroethylene (PTFE) be that a kind of function admirable is flexible and high resilience it is micro-
Porous materials gas separation membrane material, it has, and ultra-thin light weight, membrane pore structure are uniform and stable, porosity is high, even aperture distribution, do not glue
The features such as property.The strainability of the invention that conducting filtration material is improved using polytetrafluoroethylporous porous membrane, and as
The air of filtering material flows into surface layer, forms one layer of both surface filtration layer, so that dust barrier is passed through on the top layer of filtering material
Dust will be split away off from top layer after pulse dust cleaning, reduce the blocking to whole filter material.Above-mentioned polytetrafluoroethylporous porous membrane
Thickness is between 5~15 μm, so that not only air permeability is high for obtained membrane filtering material, and service life is long.Such as
If the thickness of fruit polytetrafluoroethylporous porous membrane is excessively thin, so during prepared by membrane filtering material, due to porous poly-
Tetrafluoroethene film thickness is low so that membrane filtering finished material rate is low, and in follow-up discounting assembling process, polytetrafluoro
Vinyl film is easily damaged, and does not reach use requirement；If the thickness of poly tetrafluoroethylene is blocked up, it will certainly so make many
The air permeability reduction of pore membrane filtering material, does not reach use requirement yet.Further, since the filtering material containing perforated membrane of the present invention
Using in filtration art, it is necessary to meet the characteristic of high arresting efficiency, thus polytetrafluoroethylporous porous membrane pore size 5 μm with
Under, it is excessive if the aperture of polytetrafluoroethylporous porous membrane if, big powder dust particle easily through polytetrafluoroethylporous porous membrane,
The arresting efficiency of filtering material, which certainly will be caused, to be reduced.
The painting workshop in automobile etc. is used in view of filtering material of the present invention containing perforated membrane, it is necessary to reached certain anti-
Contain conductive black layer in quick-fried standard, therefore at least one side of above-mentioned spun-bonded non-woven fabrics fid layer.Here spun-bonded non-woven fabrics branch
At least one side of timbering layer contains conductive black layer and refers to that spun-bonded non-woven fabrics fid layer upper surface and/or lower surface set one layer
Conductive black layer is then more with polytetrafluoroethylene (PTFE) by the wherein one side on spun-bonded non-woven fabrics fid layer with conductive black particle
Pore membrane hot pressing is combined, i.e., the filtering material of the invention containing perforated membrane includes two kinds：（1）According to the order of ingress of air, it is followed successively by
The three-decker that polytetrafluoroethylporous porous membrane layer, conductive black layer, spun-bonded non-woven fabrics fid layer are formed；（2）It is empty according to contact
The order of gas, is followed successively by polytetrafluoroethylporous porous membrane layer, conductive black layer, spun-bonded non-woven fabrics fid layer, conductive black layer shape
Into four-layer structure.Due to（1）Kind of electric conductivity is compared with second of poorly conductive, and it is advantageous to the（2）Kind, the（1）Plant and be useful in
The not high occasion of conduction needs.
The confficient of static friction of the spun-bonded non-woven fabrics fids layer of the present invention is 0.30~0.60, the coefficient of kinetic friction is 0.10~
0.60.If the quiet of spun-bonded non-woven fabrics fid layer, the coefficient of kinetic friction are excessive, illustrate spun-bonded non-woven fabrics rough surface, this
Sample, due to spun-bonded non-woven fabrics surface irregularity, may result in polytetrafluoroethyl-ne when carrying out Compound Machining with poly tetrafluoroethylene
Composite contact area between alkene perforated membrane and spun-bonded non-woven fabrics reduces, and will certainly so bring poly tetrafluoroethylene laminating fastness
Difference, constantly friction causes coming off for poly tetrafluoroethylene to powder granule with poly tetrafluoroethylene in actual use, so that
Use requirement is not reached.In addition, if membrane filtering material surface is concavo-convex serious, powder granule in use is attached to filter material
The recess of material point, during pulse dust cleaning, dust is difficult for drop-off to get off, and the running resistance for further resulting in filter is continuous
Ground increase, reduces the service life of filter.If the quiet of spun-bonded non-woven fabrics fid layer, the coefficient of kinetic friction are too small,
So conductive black particle is poor in spun-bonded non-woven fabrics supporting layer adhesive force, easily comes off；On the other hand, given birth to by spun-bonded non-woven fabrics
The limitation of production condition, the current production capacity of the smaller spun-bonded non-woven fabrics of coefficient of friction does not reach.
The surface roughness of spun-bonded non-woven fabrics fid layer of the present invention is less than 15 μm.If spun-bonded non-woven fabrics support layer surface
If roughness is excessive, and conductive processing rear support layer surface roughness is further increased, and will certainly cause polytetrafluoroethyl-ne
During the compound fastness reduction of alkene perforated membrane, short life, and manufacture, the yield rate of membrane filtering material is low.
The air permeability of spun-bonded non-woven fabrics fid layer is 30 under pressure 125Pa in filtering material of the invention containing perforated membrane
~50cm3/cm2/s.If the air permeability of spun-bonded non-woven fabrics fid layer is too low, in follow-up conductive processing and poly- four
In the Compound Machining of fluoride porous film, the reduction of air permeability can be brought to whole filtering material so that final contains perforated membrane
The air permeability of filtering material is low, and running resistance is high in the filter for filter material, does not reach use requirement；If spun-bonded non-woven fabrics are supported
If the air permeability of material layer is excessive, it certainly will so need to reduce the bond degree between spun-bonded non-woven fabrics core sheath fibers, so as to increase
Space between fiber and fiber.But can thus cause spun-bonded non-woven fabrics not reach use requirement rigidly.In order to reach
The requirement that manner and firm softness are annexed, air permeability preferably 35~45cm of spun-bonded non-woven fabrics fid layer of the present invention3/cm2/s。
The warp of the spun-bonded non-woven fabrics fid layer of the present invention, the firm softness of broadwise are 2800~5000mg.Due in reality
In use, under the effect of continuous pulse dust cleaning, spun-bonded non-woven fabrics must reach certain rigidity, if spun-bonded non-woven fabrics are supported
If the warp of layer, the firm softness of broadwise are too small, the less stable of filter core is finally made by membrane filtering material, holds in use
Unbalance stress is easily caused, the service life of filter core is reduced；But the firm softness of spun-bonded non-woven fabrics can not be too big, if spunbond nonwoven
If the firm softness of the warp of cloth fid, broadwise is excessive, the discounting processing of conducting filtration material subsequently is difficult, that is, is enabled to meet and given a discount
Processing, but final filter core is also easily deformed in use, so as to reduce the service life of filtering material.In view of filter
The stability and discounting processability of core, the warp of spun-bonded non-woven fabrics fid of the present invention, the firm softness of broadwise preferably 2800~
4000mg。
Due to filtering material of the present invention containing perforated membrane be used for powder filtration art, it is necessary to satisfaction can give a discount processing and
Certain flexibility, and Cost Problems consideration is combined, the grammes per square metre of the spun-bonded non-woven fabrics fid layer is in 300g/m2Below；Separately
Outer impact resistance and the stability in use of final filter material in view of the filtering material use environment containing perforated membrane, the spunbond
The grammes per square metre of non-woven fabrics fid layer needs to be more than 180g/m2.Therefore, the grammes per square metre of spun-bonded non-woven fabrics fid layer of the present invention is preferably
180~300g/m2, more preferably 180~260g/m2。
Further, since membrane filtering material will subsequently pass through discounting assembling procedure, so spun-bonded non-woven fabrics supporting layer
Thickness between 0.40~0.80mm.If the thickness of spun-bonded non-woven fabrics fid layer is blocked up, filtering material does not reach
Certain firm softness, it is not easy to operate during discounting, and the filter core of shaping does not reach certain stability in use；If
Under the conditions of same grammes per square metre, if the thickness of spun-bonded non-woven fabrics fid layer is excessively thin, it is too dead that support is laminated so that air permeability drops
It is low, it will certainly reduce final conducting filtration material gas permeable degree, if making the grammes per square metre of filtering material by reducing grammes per square metre in addition
If reduction, the stability of filter core is bad in the use of filter material after so giving a discount.Air permeability, discounting in view of filtering material
Property and stability in use, between thickness preferably 0.45~0.70mm of above-mentioned spun-bonded non-woven fabrics fid layer.
Under pressure 125Pa, the air permeability of polytetrafluoroethylporous porous membrane of the invention is 8~23cm3/cm2/s.Due to this
The filtering material containing perforated membrane of invention is applied to filtration art, so the filtering material must is fulfilled under certain wind speed,
Crushing can not be too big, if crushing is too big, not only increase operating cost, and reach and easily cause entirely mistake after certain limit
The blast of filter system.And the air permeability of poly tetrafluoroethylene can not be too high, it is too high if, poly tetrafluoroethylene will certainly be brought
Thickness is reduced, and so poly tetrafluoroethylene is easily damaged in use, and does not reach required filtering accuracy.Therefore,
In view of the crushing and filtering accuracy of the filtering material of the present invention, the air permeability preferably 10 of polytetrafluoroethylporous porous membrane~
23cm3/cm2/ s, if the air permeability of polytetrafluoroethylporous porous membrane is too big, virtually causes polytetrafluoroethylporous porous membrane former
Space increase between fiber, although reduce the crushing of membrane filtering material, but certainly will so cause filtering material
Arresting efficiency is reduced, and the exit concentration of dust is high after such as filtering, and does not reach use requirement；If polytetrafluoroethylporous porous membrane is saturating
If manner is too small, although can so improve the arresting efficiency of filtering material, filtering material in the filter, certain
Wind speed under, crushing rise quickly, running resistance increase, dust cost increase, if crushing is reached after certain limit in addition,
Easily cause filter to explode, there is very big potential safety hazard.
Under pressure 125Pa, the air permeability of the filtering material of the invention containing perforated membrane is in 4.5~15cm3/cm2/s.In reality
Border is used in filter, under certain wind speed, and it is poor that the two sides of filtering material can form certain crushing, if containing perforated membrane
If the air permeability of filtering material is too low, the crushing difference increase on non-woven fabrics supporting layer both sides so that the overall operation pressure of filter
Increase is damaged, so as to reduce the operation crushing of filter core；It is so right if the air permeability of the filtering material containing perforated membrane is excessive
The air permeability of poly tetrafluoroethylene and spun-bonded non-woven fabrics supporting layer requires higher, but the air permeability of poly tetrafluoroethylene increases,
The thickness of poly tetrafluoroethylene must be reduced.Once if the thickness reduction of poly tetrafluoroethylene, dust in use is continuous
Ground, which washes away poly tetrafluoroethylene, can cause it damaged, so as to not reach required filtering accuracy.If exceedingly improved
If spun-bonded non-woven fabrics supporting layer air permeability, it certainly will need to make the space increase between fiber and fiber in spun-bonded non-woven fabrics, and
It so may result in the firm softness reduction of spun-bonded non-woven fabrics and do not reach the rigidity required for filter core.
Filtering material of the invention containing perforated membrane is because using in the fields such as painting dressing automobiles dedusting, the filtering material makes
During, dust can constantly wash away the surface of filtrate, so the surface of filtrate must is fulfilled for certain wearability, according to
JISL1096 standards, using Crockmeter, conducting filtration material of the present invention is under the loading of 2N power, and Rubbing number exists back and forth
More than 20 times, preferably more than 50 times.If Rubbing number is too low, the easy on sale and group of polytetrafluoroethylporous porous membrane
It is damaged during dress, so as to reduce the strainability of filtering material, and do not reach use requirement.In addition, membrane filtering material
Material is in use, irregular can carry out dust cleaning to filtering material surface with pressure sky, therefore, filtering material surface needs one
Fixed compression resistance injection property, membrane filtering material of the present invention is after the empty injection 1min of 2bar pressures, the air permeability of the filtering material
Conservation rate is more than 95%.Air permeability conservation rate is to weigh the whether damaged parameter of polytetrafluoroethylporous porous membrane, if filtering material
Air permeability it is too small if, illustrate that polytetrafluoroethylporous porous membrane is damaged, it is contemplated that the influence that test error is brought, the present invention
The air permeability conservation rate preferably more than 98% of filtering material.
Filtering material of the invention containing perforated membrane is used as the filtering material for painting dressing automobiles dedusting, it is necessary to meet conduction
It is required that, if the sheet resistance of filtering material is too big, the easy flashing of electrostatic friction in use causes the hair of fire
It is raw, thus the filtering material of the invention containing perforated membrane sheet resistance preferably 1.0 × 104Below Ω.
The production method of filtering material of the invention containing perforated membrane, comprises the following steps：
（1）The preparation of conductive supporting material layer：By particle size for 2~20 μm conductive black particle dispersion spraying, printing or
At least one side of peak and spun-bonded non-woven fabrics of the thickness difference less than 30 μm of minimum point is impregnated in, then in 120~160 DEG C of bakings
Dried in case, conductive supporting material layer is made；
（2）The preparation of membrane filtering material：By wherein one side and the polytetrafluoro in conductive supporting material with conductive black particle
Ethene perforated membrane temperature be 150~280 DEG C, pressure be to carry out hot pressing under 150~350KPa, 10~30m/min of linear velocity to answer
Close, final finished product.
Above-mentioned steps（1）In spun-bonded non-woven fabrics fids layer be made by petchem during spinning it is continuous
Filament fiber is laid after networking, after being cooled down through air stream, and it is continuously homogeneous to obtain thickness in the smooth steel roll reinforcing by heating
Spun-bonded non-woven fabrics.
Above-mentioned steps（1）Described in carbon black dispersion liquid in, it is necessary to add the adhesive necessarily matched, in order to it is anti-
The carbon black pellet for only spraying, printing or being impregnated in spun-bonded non-woven fabrics surface comes off, so that the requirement of conduction required for reaching.No matter
It is to be processed or impregnation processability by spray process, printing, as long as conductive black amount of the processing on spun-bonded non-woven fabrics surface is uniform,
And in the case where reaching same conductance, conductive black adhesion amount is more few better.Although during using impregnation processability, spunbond nonwoven
Cloth is immersed in the air permeability of the conducting spunbond non-woven fabrics obtained in conductive black dispersion liquid, the conductive spinning obtained during with spray process
The air permeability of bonded non-woven fabrics is low, but the conducting filtration material crushing in use of impregnation processability is larger, causes operating cost
Rise.During printing processing, although can control the quantity for spray of conductive black, but printing production line cost is high so that final
The production cost of conducting filtration material is improved.In summary, the present invention preferably spray process, so as to carry out adding for conductive black
Work.
Above-mentioned steps（1）Described in drying temperature be 120~160 DEG C between, if drying temperature be less than 120 DEG C if,
Described conductive support layer can not be dried thoroughly；If drying temperature is more than 160 DEG C, because temperature is too high, wherein shape
Core sheath fibers shape into spun-bonded non-woven fabrics changes, and virtually causes the air permeability reduction of conductive support layer, on the other hand,
Temperature is too high, causes to waste the energy.
Above-mentioned steps（2）Wherein one side and polytetrafluoroethylstephanoporate stephanoporate containing conductive black particle in the middle material by conductive supporting
Film is combined hot pressing.If the two sides of conductive black particle be all combined with polytetrafluoroethylporous porous membrane, it certainly will so cause whole
The air permeability reduction of conducting filtration material, running resistance rise, crushing is excessive.
Above-mentioned steps（2）Described in conductive support layer and polytetrafluoroethylporous porous membrane in temperature be 150~280 DEG C, pressure
Power is to carry out hot pressing under 150~350Kpa, 10~30m/min of linear velocity to be combined, why above-mentioned combined temp select 150~
280 DEG C, be, because combined temp is less than 150 DEG C, not reach PTFE film and be combined required energy so that the patch of final PTFE film
Close fastness low, cause the service life of monolithic conductive filtering material to reduce；If combined temp is higher than 280 DEG C, it was combined
Cause the core sheath fibers flattening for forming spun-bonded non-woven fabrics layer in journey, so that causing the air permeability of integral filter material reduces,
The running resistance of filter material will certainly be caused to increase in last use, increase filtering cost.In view of the saturating of conducting filtration material
The factor such as manner and crushing, preferably 180~250 DEG C of hot pressing temperature.Why above-mentioned composite pressure select 150~
350KPa, is because if composite pressure is less than 150KPa so that the laminating fastness reduction of polytetrafluoroethylporous porous membrane, is not reached
The requirement used；If composite pressure is higher than 350KPa, in the recombination process of polytetrafluoroethylporous porous membrane, due to polytetrafluoroethyl-ne
The hypertonia of alkene perforated membrane, it may occur that the probability increase of rupture, production efficiency reduction.In view of polytetrafluoroethylporous porous membrane
The factor, pressure preferably 170~280Kpa such as fastness of fitting and the qualification rate of composite finished product.Above-mentioned polytetrafluoroethylporous porous membrane
Why recombination velocity selects 10~30m/min, is to be less than 10m/min because of recombination velocity, not only low production efficiency, Er Qiefu
Top and bottom rolls action time increases during conjunction so that the possibility increase of spun-bonded non-woven fabrics fiber deformation；If recombination velocity
More than 30m/min, can so cause the compound fastness of polytetrafluoroethylporous porous membrane reduces, so as to reduce conducting filtration material
Service life.
The present invention is explained in more detail below by embodiment, but the present invention is not restricted by the embodiments, this hair
The assay method of each physical property of the bright filtering material containing perforated membrane is as follows.
【The thickness difference of spun-bonded non-woven fabrics】
It is 10mm to take 10 pieces of length, and width is 2mm sample, carries out SEM fractograph analysis to 10 pieces of samples, every piece of sample takes
20 points, measure the maximum value of section thickness in the section thickness of 20 points, 20 points of 1 piece of sample and are designated as h1, break respectively
The minimum value of face thickness is designated as h2, and 10 pieces of samples are tested respectively, finally take 10 pieces of samples section thickness maximum average value and
Section thickness minimum average B configuration value.The calculation formula of thickness difference is as follows：
Thickness difference=section thickness maximum average value-section thickness minimum average B configuration value.
【Grammes per square metre】
Filtering material containing perforated membrane is cut into 200 × 200mm square, the grammes per square metre of filtering material is calculated from weight.
【Thickness】
Use thickness amesdial（Extruding force 0.000245Pa）The thickness of filtering material is determined, 6 points of random selection is measured,
Obtain average value.
【Air permeability】
The Air permenbility of filtering material, measurement site are determined based on frazier type fabric breathability method of testing as defined in JISL 1096
It is that 6 points of random selection is measured.
【VDI3926 arresting efficiencies ＆ exports dust concentration】
The performance of standard test filtering material based on VDI3926, the size of laboratory sample is diameter 150mm, the dust of feeding
Concentration is in 5.0 ± 0.5g/m3, filtration velocity is 2m/min（Air quantity 1.85m3/h）.The order of experiment is, initial stage 30 times+steady
Surely change 5000 times+it is last 30 times.Here initial stage, the method for 30 times and last 30 times was, with the extension of run time, filtering
The pressure difference on material two sides can be raised gradually, when reaching 1000Pa, and pulse of air carries out deashing to the dust on filtering material surface,
Then next process is carried out, the process is carried out 30 times altogether, pressure and time t is recorded during experiment（Second）Change
Change, while weighing the weight M through filtering material dust（g）.Stabilization procedures refer to during operation, using 5s as the time
Interval carries out deashing to filtering material, carries out 5000 times altogether.The pressure of deashing referred to here is 5bar.While in order to compare
Long-term influence of the deashing to filter cloth, cleaning cycle is increased respectively to 10000 times, 20000 times,
Export the weight M/ of dust concentration C=transmission filtering material dust（1.85* time t/3600）,
Arresting efficiency=（1- outlets dust concentration C/5）*100%.
【Remaining crushing】
After VDI 3926 determination test, the residual pressure loss of conducting filtration material is measured.
【Firm softness】
The firm softness assay method of the gringnard type permeability according to as defined in JISL 1096, determines the firm softness of filtering material.Clip is long through broadwise
Degree 25mm × 38mm each 5 pieces of sample is averaged after being measured.
【Crock fastness】
Tested according to colorfastness to rubbing in JIS L1096, filtering material 30mm × 120mm of the clip present invention containing perforated membrane sample
Each 5 pieces through broadwise of product, under the loading of 2N power, are rubbed and are tested back and forth with 10cm distance, the different number of times by rubbing
Amplify the pattern of 100 times of observation membrane filtering material surfaces afterwards, the friction time when membrane filtering material starts to rupture
Number is recorded as the crock fastness of the filtering material.The present invention is when the Rubbing number of membrane filtering material is more than or equal to 50 times
It is excellent, when the Rubbing number of membrane filtering material is more than or equal to 30 times and is good less than 50 times, when rubbing for membrane filtering material
Wiping number of times is more than or equal to 20 times and is general less than 30 times, less than 20 times to be poor.
【Sheet resistance】
Provided to determine the sheet resistance of conductive material according to DIN94345, clip 120mm × 120mm each 5 pieces of sample is surveyed
Averaged after fixed.
【Coefficient of friction】
According to measuring friction coefficient method B in FZ/T0105402012, under the effect of loading 405g power, test speed is 50mm/
Min, using byssus as friction cloth, clip 70mm × 21mm each 3 pieces of sample is averaged after being measured.
【Pressure sky blows experiment】
The test of clip 120mm × 120mm 3 pieces of progress air permeabilities of filtering material containing perforated membrane, then presses sky perpendicular to many
After pore membrane filtering material 3cm, injection 1min, the test of air permeability is then carried out again to the membrane filtering material after injection,
Then show that the conservation rate of air permeability is averaged.The calculation formula of the conservation rate of air permeability is as follows：It is saturating before conservation rate=injection
Air permeability × 100% after manner/injection.
Embodiment 1
（1）The preparation of conductive supporting material：By the parts by weight of conductive black particle 17 that particle size is 8 μm, 3 parts by weight of acrylic acid
Resin adds water to 100 parts by weight, and progress is sufficiently stirred for being prepared into conductive black dispersion liquid, and obtained conductive black dispersion liquid is equal
PFY spun-bonded non-woven fabrics are sprayed at evenly（TORAY, AXTAR, N2200, the thickness of peak and the thickness difference of minimum point are
15 μm, grammes per square metre 200g/m2, thickness 0.62mm, air permeability 41.0cm3/cm2The firm softness 3612mg of/s, warp-wise, the firm softness of broadwise
2071mg, confficient of static friction are 0.38, and the coefficient of kinetic friction is 0.17）Tow sides, make carbon black pellet in PFY spunbond
The adhesion amount of non-woven fabrics tow sides is 8g/m altogether2, then two sides is had to the PFY spun-bonded non-woven fabrics of carbon black pellet
Length is placed in for 24m, conductive supporting material layer is made in 130 DEG C of baking oven, to be dried with 12m/min speed in temperature, and
It is crimped；
（2）The preparation of membrane filtering material：By above-mentioned steps（1）In the one side of obtained conductive supporting material be with air permeability
12.8cm3/cm2/ s, thickness are combined for 9 μm of polytetrafluoroethylporous porous membrane, then by hot pressing temperature be 200 DEG C, pressure be
150KPa, linear velocity are to carry out heat lamination under 10m/min to make its integration, and finally obtained thickness is that 0.57mm, grammes per square metre are 208g/
m2, air permeability be 8.24cm3/cm2/ s the filtering material containing perforated membrane.According to the order of ingress of air, this contains the mistake of perforated membrane
The first layer of filter material material be polytetrafluoroethylporous porous membrane layer, the second layer be conductive black layer, third layer be PFY spunbond without
Spin cloth fid layer, the 4th layer be conductive black layer, form four-layer structure from top to bottom.Filtering material of the invention containing perforated membrane
Each physical property referring to table 1.
Embodiment 2
（1）The preparation of conductive supporting material：By the parts by weight of conductive black particle 17 that particle size is 10 μm, 3 parts by weight of acrylic acid
Resin adds water to 100 parts by weight, and progress is sufficiently stirred for being prepared into conductive black dispersion liquid, and obtained conductive black dispersion liquid is equal
PFY spun-bonded non-woven fabrics are sprayed at evenly（TORAY, AXTAR, N2220, the thickness of peak and the thickness difference of minimum point are
8 μm, grammes per square metre 217g/m2, thickness 0.63mm, air permeability be 39.4cm3/cm2The firm softness 3842mg of/s, warp-wise, the firm softness of warp-wise
2621mg, confficient of static friction are 0.31, and the coefficient of kinetic friction is 0.12）Tow sides, make carbon black pellet in PFY spunbond
The adhesion amount of non-woven fabrics tow sides is 8g/m altogether2, then two sides is had to the PFY spun-bonded non-woven fabrics of carbon black pellet
Length is placed in for 24m, temperature is made conductive supporting material, gone forward side by side in 150 DEG C of baking oven, to be dried with 12m/min speed
Row curling；
（2）The preparation of membrane filtering material：By above-mentioned steps（1）In the one side of obtained conductive supporting material be with air permeability
23.5cm3/cm2/ s, thickness are combined for 6 μm of polytetrafluoroethylporous porous membrane, then by hot pressing temperature be 265 DEG C, pressure be
180KPa, linear velocity are to carry out heat lamination under 20m/min to make its integration, and finally obtained thickness is that 0.57mm, grammes per square metre are 224g/
m2, air permeability be 13.6cm3/cm2/ s the filtering material containing perforated membrane.According to the order of ingress of air, this contains the mistake of perforated membrane
The first layer of filter material material be polytetrafluoroethylporous porous membrane layer, the second layer be conductive black layer, third layer be PFY spunbond without
Spin cloth fid layer, the 4th layer be conductive black layer, form four-layer structure from top to bottom.Filtering material of the invention containing perforated membrane
Each physical property referring to table 1.
Embodiment 3
（1）The preparation of conductive supporting material：By the parts by weight of conductive black particle 17 that particle size is 15 μm, 3 parts by weight of acrylic acid
Resin adds water to 100 parts by weight, and progress is sufficiently stirred for being prepared into conductive black dispersion liquid, and obtained conductive black dispersion liquid is equal
PFY spun-bonded non-woven fabrics are sprayed at evenly（TORAY, AXTAR, N2260, the thickness of peak and the thickness difference of minimum point are
25 μm, grammes per square metre 260g/m2, thickness 0.70mm, air permeability be 32.5cm3/cm2The firm softness 4976mg of/s, warp-wise, the firm softness of broadwise
2625mg, confficient of static friction are 0.43, and the coefficient of kinetic friction is 0.15）Tow sides, make carbon black pellet in PFY spunbond
The adhesion amount of non-woven fabrics tow sides is 12g/m altogether2, then two sides is had to the PFY spun-bonded non-woven fabrics of carbon black pellet
Length is placed in for 24m, temperature is made conductive supporting material, gone forward side by side in 140 DEG C of baking oven, to be dried with 12m/min speed
Row curling；
（2）The preparation of membrane filtering material：By above-mentioned steps（1）In the one side of obtained conductive supporting material layer be with air permeability
20.0cm3/cm2/ s, thickness are combined for 8 μm of polytetrafluoroethylporous porous membrane, then by hot pressing temperature be 200 DEG C, pressure be
150KPa, linear velocity are to carry out heat lamination under 10m/min to make its integration, and finally obtained thickness is that 0.67mm, grammes per square metre are 270g/
m2, air permeability be 10.4cm3/cm2/ s the filtering material containing perforated membrane.According to the order of ingress of air, this contains the mistake of perforated membrane
The first layer of filter material material be polytetrafluoroethylporous porous membrane layer, the second layer be conductive black layer, third layer be PFY spunbond without
Spin cloth fid layer, the 4th layer be conductive black layer, form four-layer structure from top to bottom.Filtering material of the invention containing perforated membrane
Each physical property referring to table 1.
Embodiment 4
（1）The preparation of conductive supporting material：By the parts by weight of conductive black particle 17 that particle size is 15 μm, 3 parts by weight of acrylic acid
Resin adds water to 100 parts by weight, and progress is sufficiently stirred for being prepared into conductive black dispersion liquid, and obtained conductive black dispersion liquid is equal
PFY spun-bonded non-woven fabrics are sprayed at evenly（TORAY, AXTAR, N2200, the thickness of peak and the thickness difference of minimum point are
15 μm, grammes per square metre 200g/m2, thickness 0.62mm, air permeability 41.0cm3/cm2The firm softness 3612mg of/s, warp-wise, the firm softness of broadwise
2071mg, confficient of static friction are 0.38, and the coefficient of kinetic friction is 0.17）Wherein one side, the carbon black pellet is in PFY spunbond
The adhesion amount of non-woven fabrics is 12g/m2, the PFY spun-bonded non-woven fabrics with carbon black pellet are then placed in length for 24m, temperature
Spend in the baking oven for 160 DEG C, dried with 12m/min speed, conductive supporting material is made, and be crimped；
（2）The preparation of membrane filtering material：It is 23.0cm by the one side with carbon black pellet and air permeability3/cm2/ s, thickness
It is compound for 6 μm of polytetrafluoroethylporous porous membranes, then by hot pressing temperature be 200 DEG C, pressure be that 150KPa, linear velocity are 10m/
Heat lamination is carried out under min makes its integration, and finally obtained thickness is that 0.57mm, grammes per square metre are 214g/m2, air permeability be 14.2cm3/
cm2/ s the filtering material containing perforated membrane.According to the order of ingress of air, the first layer for containing the filtering material of perforated membrane is poly-
Tetrafluoroethene porous membrane layer, the second layer are that conductive black layer, third layer are PFY spun-bonded non-woven fabrics fids layer, from upper
Lower formation three-decker.Each physical property of filtering material of the invention containing perforated membrane is referring to table 1.
Embodiment 5
（1）The preparation of conductive supporting material：By the parts by weight of conductive black particle 17 that particle size is 8 μm, 3 parts by weight of acrylic acid
Resin adds water to 100 parts by weight, and progress is sufficiently stirred for being prepared into conductive black dispersion liquid, and obtained conductive black dispersion liquid is equal
PFY spun-bonded non-woven fabrics are sprayed at evenly（TORAY, AXTAR, N2260, the thickness of peak and the thickness difference of minimum point are
25 μm, grammes per square metre 260g/m2, thickness 0.70mm, air permeability be 32.5cm3/cm2The firm softness 4976mg of/s, warp-wise, the firm softness of broadwise
2625mg, confficient of static friction are 0.43, and the coefficient of kinetic friction is 0.15）Wherein one side, make carbon black pellet in PFY spunbond
The adhesion amount of non-woven fabrics is 8g/m2, the PFY spun-bonded non-woven fabrics with carbon black pellet are then placed in length for 24m, temperature
Spend in the baking oven for 150 DEG C, dried with 12m/min speed, conductive supporting material is made, and be crimped；
（2）The preparation of membrane filtering material：By above-mentioned steps（1）In the one side of obtained conductive supporting material be with air permeability
15.8cm3/cm2/ s, thickness are combined for 8 μm of polytetrafluoroethylporous porous membrane, then by hot pressing temperature be 200 DEG C, pressure be
150KPa, linear velocity are to carry out heat lamination under 10m/min to make its integration, and finally obtained thickness is that 0.67mm, grammes per square metre are 268g/
m2, air permeability be 9.81cm3/cm2/ s the filtering material containing perforated membrane.According to the order of ingress of air, this contains the mistake of perforated membrane
The first layer of filter material material be polytetrafluoroethylporous porous membrane layer, the second layer be conductive black layer, third layer be PFY spunbond without
Cloth fid layer is spun, three-decker is formed from top to bottom.Each physical property of filtering material of the invention containing perforated membrane is referring to table 1.
Embodiment 6
（1）The preparation of conductive supporting material：By the parts by weight of conductive black particle 17 that particle size is 10 μm, 3 parts by weight of acrylic acid
Resin adds water to 100 parts by weight, carries out being sufficiently stirred for being prepared into conductive black dispersion liquid, obtained conductive black dispersion liquid is led to
The mode for crossing printing is applied to PFY spun-bonded non-woven fabrics（TORAY, AXTAR, N2200, the thickness of peak and the thickness of minimum point
Degree difference is 15 μm, grammes per square metre 200g/m2, thickness 0.62mm, air permeability 41.0cm3/cm2The firm softness 3612mg of/s, warp-wise, broadwise are firm
Softness 2071mg, confficient of static friction are 0.38, and the coefficient of kinetic friction is 0.17）Tow sides, make carbon black pellet in PFY
The adhesion amount of spun-bonded non-woven fabrics tow sides is 8g/m altogether2, then by two sides with carbon black pellet PFY spunbond without
Spinning is arranged in length for 24m, and conductive supporting material is made in 130 DEG C of baking oven, to be dried with 12m/min speed in temperature
Layer, and be crimped；
（2）The preparation of membrane filtering material：By above-mentioned steps（1）In the one side of obtained conductive supporting material be with air permeability
12.8cm3/cm2/ s, thickness are combined for 9 μm of polytetrafluoroethylporous porous membrane, then by hot pressing temperature be 200 DEG C, pressure be
150KPa, linear velocity are to carry out heat lamination under 10m/min to make its integration, and finally obtained thickness is that 0.58mm, grammes per square metre are 209g/
m2, air permeability be 9.04cm3/cm2/ s the filtering material containing perforated membrane.According to the order of ingress of air, this contains the mistake of perforated membrane
The first layer of filter material material be polytetrafluoroethylporous porous membrane layer, the second layer be conductive black layer, third layer be PFY spunbond without
Spin cloth fid layer, the 4th layer be conductive black layer, form four-layer structure from top to bottom.Filtering material of the invention containing perforated membrane
Each physical property referring to table 1.
Embodiment 7
（1）The preparation of conductive supporting material：By the parts by weight of conductive black particle 17 that particle size is 12 μm, 3 parts by weight of acrylic acid
Resin adds water to 100 parts by weight, and progress is sufficiently stirred for being prepared into conductive black dispersion liquid, by PFY spun-bonded non-woven fabrics
（TORAY, AXTAR, N2200, the thickness of peak and the thickness difference of minimum point are 15 μm, grammes per square metre 200g/m2, thickness 0.62mm,
Air permeability 41.0cm3/cm2The firm softness 3612mg of/s, warp-wise, the firm softness 2071mg of broadwise, confficient of static friction are 0.38, dynamic friction
Coefficient is 0.17）It is impregnated in conductive black dispersion liquid, makes carbon black pellet in the attached of PFY spun-bonded non-woven fabrics tow sides
The amount of wearing is 8g/m altogether2, it is 24m, temperature that then the PFY spun-bonded non-woven fabrics by two sides with carbon black pellet, which are placed in length,
In 130 DEG C of baking ovens, to be dried with 12m/min speed, conductive supporting material layer is made, and be crimped；
（2）The preparation of membrane filtering material：By above-mentioned steps（1）In the one side of obtained conductive supporting material be with air permeability
12.8cm3/cm2/ s, thickness are combined for 9 μm of polytetrafluoroethylporous porous membrane, then by hot pressing temperature be 200 DEG C, pressure be
150KPa, linear velocity are to carry out heat lamination under 10m/min to make its integration, and finally obtained thickness is that 0.57mm, grammes per square metre are 207g/
m2, air permeability be 7.92cm3/cm2/ s the filtering material containing perforated membrane.According to the order of ingress of air, this contains the mistake of perforated membrane
The first layer of filter material material be polytetrafluoroethylporous porous membrane layer, the second layer be conductive black layer, third layer be PFY spunbond without
Spin cloth fid layer, the 4th layer be conductive black layer, form four-layer structure from top to bottom.Filtering material of the invention containing perforated membrane
Each physical property referring to table 1.
Filtering material containing perforated membrane made from embodiment 1~7 can be applied to painting dressing automobiles, building materials application, Hardware fitting
Powder body coating line filtration art.
Comparative example 1
（1）The preparation of conductive supporting material：Thickness is plated in by the method for evaporation by spunbond polyester non-woven fabrics for 3.5nm aluminium film
（TORAY, AXTAR, N2200, the thickness of peak and the thickness difference of minimum point are 15 μm, grammes per square metre 200g/m2, thickness 0.62mm,
Air permeability 41.0cm3/cm2The firm softness 3612mg of/s, warp-wise, the firm softness 2071mg of broadwise, confficient of static friction are 0.38, dynamic friction
Coefficient is 0.17）Tow sides on, be prepared into conductive support layer, be then crimped；
（2）The preparation of membrane filtering material：By above-mentioned steps（1）In the one side of obtained conductive supporting material be with air permeability
14.2cm3/cm2/ s, the polytetrafluoroethylporous porous membrane that 8 μm of thickness is combined, then by hot pressing temperature be 200 DEG C, pressure be
150KPa, linear velocity make its integration to carry out heat lamination under 10m/min, thickness are made for 0.61mm, grammes per square metre is 203g/m2's
Conducting filtration material, each physical property of the conducting filtration material is referring to table 2.
Comparative example 2
（1）The preparation of conductive supporting material：By the parts by weight of conductive black particle 17 that particle size is 50 μm, 3 parts by weight of acrylic acid
Resin adds water to 100 parts by weight, and progress is sufficiently stirred for being prepared into conductive black dispersion liquid, and obtained conductive black dispersion liquid is equal
PFY spun-bonded non-woven fabrics are sprayed at evenly（TORAY, AXTAR, N2200, the thickness of peak and the thickness difference of minimum point are
15 μm, grammes per square metre 200g/m2, thickness 0.62mm, air permeability be 41.0cm3/cm2The firm softness 3612mg of/s, warp-wise, the firm softness of broadwise
2071mg, confficient of static friction are 0.38, and the coefficient of kinetic friction is 0.17）Tow sides on, make carbon black pellet PFY spin
The adhesion amount of bonded non-woven fabrics is 10g/m2, the PFY spun-bonded non-woven fabrics with carbon black pellet are then placed in length for 24m,
In 150 DEG C of baking oven, to be dried with 12m/min speed conductive supporting material is made, and be crimped in temperature；
（2）The preparation of membrane filtering material：By above-mentioned steps（1）In the one side of obtained conductive supporting material be with air permeability
7.36cm3/cm2/ s, average thickness for 15 μm polytetrafluoroethylporous porous membrane be combined, then by hot pressing temperature be 200 DEG C, pressure
It is to carry out heat lamination under 10m/min to make its integration for 150KPa, linear velocity, finally obtained thickness is that 0.63mm, grammes per square metre are
212g/m2, air permeability be 1.89cm3/cm2/ s conducting filtration material.According to the order of ingress of air, the conducting filtration material
First layer be polytetrafluoroethylporous porous membrane layer, the second layer be conductive black layer, third layer be PFY spun-bonded non-woven fabrics branch
Timbering layer, the 4th layer be conductive black layer, form four-layer structure from top to bottom.Each physical property of the conducting filtration material is referring to table 2.
Comparative example 3
（1）The preparation of conductive supporting material：By the parts by weight of conductive black particle 17 that particle size is 10 μm, 3 parts by weight of acrylic acid
Resin adds water to 100 parts by weight, and progress is sufficiently stirred for being prepared into conductive black dispersion liquid, and obtained conductive black dispersion liquid is equal
PFY spun-bonded non-woven fabrics are sprayed at evenly（TORAY, AXTAR, N2220, the thickness of peak and the thickness difference of minimum point are
60 μm, grammes per square metre 217g/m2, thickness 0.63mm, air permeability be 39.4cm3/cm2The firm softness 3987mg of/s, warp-wise, the firm softness of warp-wise
2911mg, confficient of static friction are 0.89, and the coefficient of kinetic friction is 0.45）Tow sides, make carbon black pellet in PFY spunbond
The adhesion amount of non-woven fabrics tow sides is 8g/m altogether2, then two sides is had to the PFY spun-bonded non-woven fabrics of carbon black pellet
Length is placed in for 24m, temperature is made conductive supporting material, gone forward side by side in 150 DEG C of baking oven, to be dried with 12m/min speed
Row curling；
（2）The preparation of membrane filtering material：By above-mentioned steps（1）In the one side of obtained conductive supporting material be with air permeability
23.5cm3/cm2/ s, thickness are combined for 6 μm of polytetrafluoroethylporous porous membrane, then by hot pressing temperature be 265 DEG C, pressure be
150KPa, linear velocity are to carry out heat lamination under 20m/min to make its integration, and finally obtained thickness is that 0.57mm, grammes per square metre are 223g/
m2, air permeability be 14.7cm3/cm2/ s conducting filtration material.According to the order of ingress of air, the first of the conducting filtration material
Layer be polytetrafluoroethylporous porous membrane layer, the second layer be conductive black layer, third layer be PFY spun-bonded non-woven fabrics fids layer,
4th layer is conductive black layer, forms four-layer structure from top to bottom.Each physical property of the conducting filtration material is referring to table 2.
Table 1
Table 2
Claims (10)
1. a kind of filtering material containing perforated membrane, it is characterised in that：The filtering material includes spun-bonded non-woven fabrics fid layer, conduction
Containing conductive black layer in silica aerogel layer, polytetrafluoroethylporous porous membrane layer, at least one side of the spun-bonded non-woven fabrics fid layer, and
It is polytetrafluoroethylporous porous membrane layer that air, which flows into surface layer, and the thickness of the spun-bonded non-woven fabrics fid layer is continuously homogeneous, and spunbond
The peak of non-woven fabrics supporting layer and the thickness difference of minimum point are less than 30 μm.
2. the filtering material containing perforated membrane according to claim 1, it is characterised in that：The spun-bonded non-woven fabrics fid layer
Confficient of static friction is 0.30~0.60, and the coefficient of kinetic friction is 0.10~0.60.
3. the filtering material according to claim 1 or claim 2 containing perforated membrane, it is characterised in that：It is described to spin under pressure 125Pa
The air permeability of bonded non-woven fabrics fid layer is 30~50cm3/cm2/s。
4. the filtering material according to claim 1 or claim 2 containing perforated membrane, it is characterised in that：The spun-bonded non-woven fabrics fid
The warp of layer, the firm softness of broadwise are 2800~5000mg.
5. the filtering material containing perforated membrane according to claim 1, it is characterised in that：Under pressure 125Pa, the polytetrafluoro
The air permeability of ethene perforated membrane is 8~23cm3/cm2/s。
6. the filtering material according to claim 1 or claim 2 containing perforated membrane, it is characterised in that：Under pressure 125Pa, the filtering
The air permeability of material is 4.5~15cm3/cm2/s。
7. the filtering material according to claim 1 or claim 2 containing perforated membrane, it is characterised in that：After the empty injection 1min of 2bar pressures,
The air permeability conservation rate of the filtering material is more than 95%.
8. the filtering material containing perforated membrane according to claim 1, it is characterised in that：The sheet resistance of the filtering material exists
1.0×104Below Ω.
9. the production method of the filtering material containing perforated membrane described in a kind of claim 1, it is characterised in that：Comprise the following steps：
（1）The preparation of conductive supporting material layer：By particle size for 2~20 μm conductive black particle dispersion spraying, printing or
At least one side of peak and spun-bonded non-woven fabrics of the thickness difference less than 30 μm of minimum point is impregnated in, then in 120~160 DEG C of bakings
Dried in case, conductive supporting material layer is made；
（2）The preparation of membrane filtering material：By wherein one side and the polytetrafluoro in conductive supporting material with conductive black particle
Ethene perforated membrane temperature be 150~280 DEG C, pressure be to carry out hot pressing under 150~350KPa, 10~30m/min of linear velocity to answer
Close, final finished product.
10. the filtering material containing perforated membrane described in a kind of claim 1 is applied in painting dressing automobiles, building materials application, Hardware fitting powder
Application in the filtration art of wiring.
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| CN201610093254.1A CN107097474A (en) | 2016-02-19 | 2016-02-19 | A kind of filtering material and its production method and purposes containing perforated membrane |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019174597A1 (en) * | 2018-03-14 | 2019-09-19 | 东丽纤维研究所（中国）有限公司 | Filter material |
| CN115845497A (en) * | 2022-12-24 | 2023-03-28 | 彭昭团 | Filtering material and filter element |
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| CN2052141U (en) * | 1989-04-27 | 1990-01-31 | 中国电子元件行业协会电子变压器协会 | New-type conductive adhesive-bonded cloth |
| JP2004230217A (en) * | 2003-01-28 | 2004-08-19 | Nitto Denko Corp | Filter medium for air filter, method for manufacturing the same and air filter unit using the same |
| CN101861196A (en) * | 2007-10-19 | 2010-10-13 | 日本奥亚特克斯股份有限公司 | Air filter and air filter assebly for cleaner made by using the filter |
| CN102380258A (en) * | 2011-09-01 | 2012-03-21 | 黄泽军 | Film-covered spunbonded nonwovens filter cloth |
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| CN2052141U (en) * | 1989-04-27 | 1990-01-31 | 中国电子元件行业协会电子变压器协会 | New-type conductive adhesive-bonded cloth |
| JP2004230217A (en) * | 2003-01-28 | 2004-08-19 | Nitto Denko Corp | Filter medium for air filter, method for manufacturing the same and air filter unit using the same |
| CN101861196A (en) * | 2007-10-19 | 2010-10-13 | 日本奥亚特克斯股份有限公司 | Air filter and air filter assebly for cleaner made by using the filter |
| CN102380258A (en) * | 2011-09-01 | 2012-03-21 | 黄泽军 | Film-covered spunbonded nonwovens filter cloth |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019174597A1 (en) * | 2018-03-14 | 2019-09-19 | 东丽纤维研究所（中国）有限公司 | Filter material |
| CN111741802A (en) * | 2018-03-14 | 2020-10-02 | 东丽纤维研究所（中国）有限公司 | Filtering material |
| US20210362101A1 (en) * | 2018-03-14 | 2021-11-25 | Toray Industries, Inc. | Filter material |
| EP3766565A4 (en) * | 2018-03-14 | 2021-12-08 | Toray Industries, Inc. | Filter material |
| CN115845497A (en) * | 2022-12-24 | 2023-03-28 | 彭昭团 | Filtering material and filter element |
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Application publication date: 20170829 |