CN207307401U - The liquid charging unit of electret - Google Patents
The liquid charging unit of electret Download PDFInfo
- Publication number
- CN207307401U CN207307401U CN201720487677.1U CN201720487677U CN207307401U CN 207307401 U CN207307401 U CN 207307401U CN 201720487677 U CN201720487677 U CN 201720487677U CN 207307401 U CN207307401 U CN 207307401U
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- Prior art keywords
- electret
- liquid
- inner cylinder
- outer barrel
- charging unit
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- 239000007788 liquid Substances 0.000 title claims abstract description 99
- 239000000463 material Substances 0.000 claims abstract description 51
- 239000000758 substrate Substances 0.000 claims abstract description 37
- 238000001035 drying Methods 0.000 claims abstract description 12
- 239000004745 nonwoven fabric Substances 0.000 claims description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 22
- 238000007664 blowing Methods 0.000 claims description 9
- 238000004804 winding Methods 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 8
- 239000003792 electrolyte Substances 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- 239000012528 membrane Substances 0.000 claims description 5
- 229920005989 resin Polymers 0.000 claims description 5
- 239000011347 resin Substances 0.000 claims description 5
- 239000007921 spray Substances 0.000 claims description 5
- 238000007493 shaping process Methods 0.000 claims description 4
- 239000007864 aqueous solution Substances 0.000 claims description 3
- 239000002759 woven fabric Substances 0.000 claims description 2
- 238000002242 deionisation method Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 12
- 238000009690 centrifugal atomisation Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 32
- -1 Polyethylene Polymers 0.000 description 24
- 239000004743 Polypropylene Substances 0.000 description 13
- 229920001155 polypropylene Polymers 0.000 description 12
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 8
- 239000008367 deionised water Substances 0.000 description 8
- 229910021641 deionized water Inorganic materials 0.000 description 8
- 239000004744 fabric Substances 0.000 description 7
- WSSSPWUEQFSQQG-UHFFFAOYSA-N 4-methyl-1-pentene Chemical compound CC(C)CC=C WSSSPWUEQFSQQG-UHFFFAOYSA-N 0.000 description 6
- 239000000835 fiber Substances 0.000 description 6
- 239000002994 raw material Substances 0.000 description 5
- 239000000443 aerosol Substances 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 229920000139 polyethylene terephthalate Polymers 0.000 description 4
- 239000005020 polyethylene terephthalate Substances 0.000 description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 description 4
- 239000011780 sodium chloride Substances 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- 239000004952 Polyamide Substances 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 3
- 239000004642 Polyimide Substances 0.000 description 3
- 239000004734 Polyphenylene sulfide Substances 0.000 description 3
- 230000035515 penetration Effects 0.000 description 3
- 229920000747 poly(lactic acid) Polymers 0.000 description 3
- 229920002647 polyamide Polymers 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 229920001721 polyimide Polymers 0.000 description 3
- 239000004626 polylactic acid Substances 0.000 description 3
- 229920000069 polyphenylene sulfide Polymers 0.000 description 3
- 229920005992 thermoplastic resin Polymers 0.000 description 3
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010041 electrostatic spinning Methods 0.000 description 2
- XUCNUKMRBVNAPB-UHFFFAOYSA-N fluoroethene Chemical compound FC=C XUCNUKMRBVNAPB-UHFFFAOYSA-N 0.000 description 2
- 239000004750 melt-blown nonwoven Substances 0.000 description 2
- 229920001707 polybutylene terephthalate Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- WSQZNZLOZXSBHA-UHFFFAOYSA-N 3,8-dioxabicyclo[8.2.2]tetradeca-1(12),10,13-triene-2,9-dione Chemical compound O=C1OCCCCOC(=O)C2=CC=C1C=C2 WSQZNZLOZXSBHA-UHFFFAOYSA-N 0.000 description 1
- 229920000089 Cyclic olefin copolymer Polymers 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 229920001410 Microfiber Polymers 0.000 description 1
- 238000001467 acupuncture Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- ZSDJVGXBJDDOCD-UHFFFAOYSA-N benzene dioctyl benzene-1,2-dicarboxylate Chemical compound C(C=1C(C(=O)OCCCCCCCC)=CC=CC1)(=O)OCCCCCCCC.C1=CC=CC=C1 ZSDJVGXBJDDOCD-UHFFFAOYSA-N 0.000 description 1
- 238000009954 braiding Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 150000005690 diesters Chemical class 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000003658 microfiber Substances 0.000 description 1
- 238000012946 outsourcing Methods 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical compound FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- 238000005491 wire drawing Methods 0.000 description 1
Landscapes
- Filtering Materials (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
Abstract
It the utility model is related to the liquid charging unit of electret.The liquid charging unit of electret, the device include：(1) charging equipment, the charging equipment include liquid tank and roller；Wherein, the liquid tank accommodates liquid, the roller, which includes inner cylinder and surface, has the outer barrel of through hole, the outer barrel and inner cylinder are at least partially immersed in the liquid of liquid tank, with the inner cylinder rotating, the liquid in liquid tank is ejected under the influence of centrifugal force by the through hole of outer barrel can be on the porous substrate of electret；And (2) drying equipment.Can the porous substrate (3) of electret when passing through liquid charging equipment (II), the inner cylinder rotating of roller (5) causes liquid centrifugal atomization to base material and is impregnated with its thickness direction, base material after the drying, can carry substantial amounts of electric charge.The electret produced by this device has the characteristics that cost is low, performance is good and production efficiency is high, the filter medium being particularly suitable in mask, air purifier.
Description
Technical field
It the utility model is related to a kind of liquid charging unit of electret, and in particular to a kind of liquid of electret
Body centrifugal atomization charging method, and the liquid charging unit of electret that this method uses.
Background technology
The electret processing of electret material refers to by electrostatic spinning, corona discharge, triboelectrification, liquid charging, thermal poling
With low-energy electron beam bombardment etc. mode, make electret material have contain charge capability for a long time.Wherein, the liquid charging of electret material
Method is come so that electret material has the ability of long-term storage electric charge, this charging method is thrown with equipment using liquid knockout
Provide the features such as low, production safety, production efficiency are high, good product quality and strainability are excellent.
Liquid charging method as this electret material, it is known that have, water droplet is sprayed with sprayer under a certain pressure
It is mapped to a kind of nonwoven substrates for the non-conductive microfibre of thermoplasticity that can largely capture electric charge up, there is the base material and improve
The electric charge of filtration (referring to Chinese patent application publication number CN1129963A).But the method for this " spraying charging "
Penetration power is inadequate in a thickness direction, is easy to cause direction charging inequality, and in order to reach higher filter efficiency, usually need
To spray to the upper and lower surface of base material, add the complexity of technique.Another known method is " water suction charging " side
Method, i.e., contact while non-conductive fibers sheet stock is divided a word with a hyphen at the end of a line the crosscutting sheet stock width of suction nozzle, and makes the contact site
The sheet stock surface of opposite side contact or be impregnated in water with the water surface, carrying out suction to water with the suction nozzle makes water along sheet stock thickness
Direction passes through, so that being impregnated with water in the non-conductive fibers sheet stock so that fibre sheet material is with substantial amounts of electric charge (referring to China
Patent application publication number CN 1518619A).Should " water suction charging " method have the characteristics that liquid penetrates that abundant, performance is high,
But since contact area is small, penetration power is big, it is easily destroyed the structure of non-woven fabrics.
Accordingly, it is desirable to provide the liquid charging method and device of a kind of new electret, this method cost is low, property
Can good and production efficiency height.
Utility model content
The purpose of the utility model example embodiment is to solve above and other deficiency existing in the prior art,
A kind of liquid charging unit of new electret is provided.
On the one hand, the utility model embodiment provides a kind of liquid charging method of electret, the method
Including：
(1) make can the porous substrate of electret immerse in liquid and be covered on outer surface of cylinder, the roller include inner cylinder and
Outer barrel, at least part outer barrel and inner cylinder leaching are in a liquid；
(2) inner cylinder of rotating cylinder so that in liquid centrifugal atomization to base material and be impregnated with its thickness direction；With
(3) base material is dried.
In one embodiment of the utility model, the outer barrel surface has equally distributed through hole, and the area in hole accounts for
Than not less than about 50%, the preferred area accounting not less than about 70% in hole；With
The inner cylindrical surface has equally distributed protrusion, and preferred cross-sections shape is gear shape.
In one embodiment of the utility model, the rotating speed of the inner cylinder is about 5~2000 revs/min, preferably from about 50
~1000 revs/min.
In one embodiment of the utility model, it is described can the porous substrate translational speed in a liquid of electret be about
1~100 m/min, preferably from about 10~50 ms/min.
In one embodiment of the utility model, the cornerite that can be between the porous substrate and outer barrel of electret is not less than about
30 °, preferably from about 60~120 °.
In one embodiment of the utility model, it is described can the porous substrate of electret be selected from the group：It is non-woven fabrics, woven
Cloth, perforated membrane and their compositions.
In one embodiment of the utility model, it is described can the material of porous substrate of electret be selected from the group：Polypropylene,
Polyethylene, poly- 4-methyl-1-pentene, polyethylene terephthalate, polybutylene terephthalate, Kynoar, poly- four
The combination of vinyl fluoride, polylactic acid, polyamide, polyphenylene sulfide, polyimides and above-mentioned substance, preferably polypropylene.
In one embodiment of the utility model, the liquid is deionized water, pure water or contains the water-soluble of electrolyte
Liquid, preferably deionized water.
On the other hand, the utility model embodiment provides a kind of liquid charging unit of electret, the device
Including：
(1) charging equipment, the charging equipment include liquid tank and roller；
Wherein, the liquid tank accommodates liquid,
The roller, which includes inner cylinder and surface, has the outer barrel of through hole, and the outer barrel and inner cylinder are at least partially immersed in liquid tank
Liquid in, and
The inner cylinder rotating, the liquid in liquid tank is ejected under the influence of centrifugal force by the through hole of outer barrel can stay
On the porous substrate of pole；And
(2) drying equipment.
In one embodiment of the utility model, described device further includes melt-blowing equipment and/or winding device；
Wherein, the resin of melting sprays in melt-blowing equipment, after trapping formed described in can electret porous substrate；Dry
Can the porous substrate of electret shaping is wound on winding device.
In one embodiment of the utility model, the speed of the inner cylinder rotating is 5~2000 revs/min.
In one embodiment of the utility model, the outer barrel surface has equally distributed through hole；With
On the basis of the surface area of outer barrel surface, the area accounting of the through hole is not less than 50%.
In one embodiment of the utility model, the surface of the inner cylinder has equally distributed protrusion, the inner cylinder
Cross sectional shape be gear shape.
In one embodiment of the utility model, it is described can the porous substrate translational speed in a liquid of electret be 1
~100 ms/min.
In one embodiment of the utility model, the cornerite that can be between the porous substrate and outer barrel of electret is not less than
30°。
In one embodiment of the utility model, it is described can the porous substrate of electret be selected from the group：It is non-woven fabrics, woven
Cloth, perforated membrane and their compositions.
In one embodiment of the utility model, it is described can the material of porous substrate of electret be selected from the group：Polypropylene,
Polyethylene, poly- 4-methyl-1-pentene, polyethylene terephthalate, polybutylene terephthalate, Kynoar, poly- four
The combination of vinyl fluoride, polylactic acid, polyamide, polyphenylene sulfide, polyimides and above-mentioned substance.
In one embodiment of the utility model, the liquid is deionized water, pure water or contains the water-soluble of electrolyte
Liquid.
In the utility model, this " liquid centrifugal atomization charging " method drives surrounding liquid when using roller inner cylinder rotating
Body produces centrifugal atomization, so as to cause that the penetration power of liquid is stronger, evenly when not destroying base material；At the same time can electret it is porous
Base material, which is covered in the outer barrel surface of roller and soaking and in a liquid, improves the contact area of liquid and base material, make it that charging is more equal
It is even, so as to improve production efficiency and product quality.
Brief description of the drawings
It is described in conjunction with the accompanying drawings for the exemplary embodiment of the utility model, this practicality may be better understood
It is new, in the accompanying drawings：
Fig. 1 is the production work that liquid charging method in one example embodiment of the utility model prepares electret
Program flow diagram.
Fig. 2 is roller (including outer barrel and inner cylinder) in the liquid charging unit in one example embodiment of the utility model
Schematic diagram.
Embodiment
Unless otherwise defined, the technical term or scientific terminology used in claims and specification should be this reality
With the ordinary meaning that there is the personage of general technical ability to be understood in new technical field.
Herein, for the amount of such as component, accounting, speed, process time and similar numerical value and its scope, or
The change for the numerical quantities for " about " referring to occurring that the scale of person's component and similar numerical value and its scope are modified, example
Such as, from being used to prepare material, composition, complex, concentrate, component parts, the manufacture of product or using used in preparation
General measure and operating process；From the accidental error during these；From for the manufacture of implementation, source or rise
The purity of beginning material or the difference of component；And similar factor.
Herein, when providing number range such as 5-25, this refer to more than or equal to 5 or not less than 5 and dividually and
Independently no more than 25 or less than or equal to 25.In certain embodiments, this scope can be independently defined to not less than 5, and
Separately and independently it is not more than 25.With this scope such as 10-15, or 10-20 value also separately and independently with phase
Same mode includes the lower limit and upper limit value of the scope.
Either the similar word such as "comprising" means to appear in the element before " comprising " or "comprising" term " comprising "
Either object covers the element for appearing in " comprising " or "comprising" presented hereinafter or object and its equivalent element, it is not excluded that
Other elements or object.
In the utility model, term " cornerite " refer to it is described can electret porous substrate and outer barrel contact arc to circle
Heart angle.The size of cornerite, described in reflection can between the porous substrate of electret and the circular surfaces of outer barrel contact arc length.
In the utility model, the liquid charging method of the electret include making can the porous substrate of electret immerse
In liquid and be moved to the roller being at least partially immersed in liquid, which has inner cylinder and outer barrel, its inner cylinder rotating so that
The liquid of inner cylindrical surface is ejected on base material and is impregnated with its thickness direction under the influence of centrifugal force, base material just band after the drying
There is substantial amounts of electric charge.
In the utility model, it is used can electret porous substrate can be online production porous substrate, also may be used
Think offline produced or the non-electret of commercial outsourcing or electric electret porous substrate.Porous substrate using thermoplastic resin as
Raw material produces, and thermoplastic resin includes polypropylene, polyethylene, poly- 4-methyl-1-pentene, polyethylene terephthalate, poly-
Butylene terephthalate, Kynoar, polytetrafluoroethylene (PTFE), polylactic acid, polyamide, polyphenylene sulfide, polyimides and on
State the composition of material.
In the utility model, the base material can be using the non-woven fabrics obtained by various non-woven fabrics formers, nothing
Woven fabric former includes the equipment such as melt-blown, spunbond, wet method, acupuncture, electrostatic spinning, such as uses melt-blowing equipment, high fluidity
Polypropylene (MFI=200-2000) is the grammes per square metre 10-100g/m of raw material production2Polypropylene non-woven fabric；Base material can also serve as reasons
The composition that spunbond layer and meltblown layer are combined, such as the polypropylene melt blown non-woven fabric produced and poly terephthalic acid second two
The compound nonwoven cloth that ester spun-bonded non-woven fabrics are bonded by adhesive, in another example using spunbond-melt blown unit equipment, gathering to benzene
Dioctyl phthalate second diester and polypropylene are respectively the polypropylene melt blown non-woven fabric and polyethylene terephthalate spunbond of raw material production
The compound nonwoven cloth of non-woven fabrics；Base material can also be the Woven that thermoplastic resin is obtained by wire drawing, braiding, such as by gathering
Propylene material pulls into the continuous filament yarn of diameter 0.2mm, then weave, thread count be 40/cm plain weave structure silk
Net；Base material can also be perforated membrane, such as the perforated membrane that polyvinylidene difluoride film is formed after mechanical stretching；Base material can be with
The composition being combined for above-mentioned material.
In one embodiment of the utility model, it is used can the material of porous substrate of electret be selected from the group：It is poly-
Ethene, polypropylene, poly- (4- methyl isophthalic acids amylene), polytetrafluoroethylene (PTFE), Kynoar, tetrafluoroethene and olefin copolymer and
Their mixture.In one preferred embodiment of the utility model, it is described can electret porous substrate material be poly- third
Alkene.
Suitable for the utility model can electret porous substrate can use liquid charging unit shown in Fig. 1 melt-blowing equipment
(I) manufacture.As shown in Fig. 2, melting resin by spinneret (1) spray, just formd after trapping sheet can electret it is more
Hole base material (3), is drawn by series of drums (2), is sent into liquid charging equipment (II) and is carried out charging process.
The liquid charging method of the electret of the utility model includes：Make can electret porous substrate immerse liquid in
And outer surface of cylinder is covered on, the roller includes inner cylinder and outer barrel, and at least part outer barrel and inner cylinder soak in a liquid, roller
Inner cylinder rotating causes liquid centrifugal atomization to base material and is impregnated with its thickness direction, and base material is dried afterwards.By this
Charging method can be such that liquid is fully impregnated with the thickness direction of base material.Pass through whole electret material after fully drying
A large amount of uniform electric charges on material strip.Aforesaid liquid is deionized water, pure water or the aqueous solution containing electrolyte.
In the utility model, used roller includes inner cylinder and outer barrel.Outer barrel can not be driven by motor, and outer barrel can
Passively rotated with the movement with the porous substrate, or the outer barrel can also be fixed.Inner cylinder can be by horse
Up to or other means driving, the rotating speed of inner cylinder be 5~2000 revs/min, 10~2000 revs/min, 50~2000 revs/min,
100~2000 revs/min, 200~2000 revs/min, 500~2000 revs/min, 800~2000 revs/min, 1000~
2000 revs/min, 1500~2000 revs/min, 5~1500 revs/min, 5~1000 revs/min, 5~500 revs/min, 5
~300 revs/min, 50~1500 revs/min, 50~800 revs/min, 50~600 revs/min, 50~500 revs/min,
100~1500 revs/min, 100~1000 revs/min, 100~500 revs/min, 100~300 revs/min.It is new in this practicality
In type, when the rotating speed of inner cylinder is less than 5 revs/min, liquid centrifugal force is relatively low, causes base material electret effect poor.But work as inner cylinder
Rotating speed be higher than 2000 revs/min when, centrifugal force is excessive, and matrix structure has destroyed risk.
In one embodiment of the utility model, the surface of inner cylinder has equally distributed protrusion, the section shape of inner cylinder
Shape is gear shape.The raised section can be selected from semicircle, rectangle, half elliptic, triangle and combinations thereof.
In one embodiment of the utility model, outer barrel surface has equally distributed through hole, the area accounting of through hole
Not less than 50%, not less than 55%, not less than 60%, not less than 65%, not less than 70%.In one embodiment party of the utility model
In formula, in the case where considering not damaging outer tube structure intensity, preferably the area accounting of through hole not less than 60% or is not less than
70%.
In one embodiment of the utility model, it is described can the porous substrate of electret by the speed of charging equipment be 1
~100 ms/min, preferably 10~50 ms/min.In one embodiment of the utility model, it is described can electret porous base
Material is covered in outer barrel surface and immerses in liquid when by liquid charging equipment, wherein, this can electret porous substrate with it is outer
Cornerite between cylinder is not less than 30 °, not less than 35 °, not less than 40 °, not less than 45 °, not less than 50 °, not less than 60 °, is not less than
70 °, not less than 80 °, not less than 90 °, not less than 100 °, not less than 110 ° or not less than 110 °, it is preferable that this can electret
Cornerite between porous substrate and outer barrel is 40~120 °, 50~120 °, 60~120 °, 70~120 °, 80~120 °, 90~
120 °, 40~110 °, 40~100 °, 40~90 ° or 40~80 °.
On the other hand, the utility model embodiment provides a kind of liquid charging unit of electret, the device
Including：
Optional, melt-blowing equipment (I),
Charging equipment (II),
Drying equipment (III) and
Optional, winding device (IV).
The resin of melting is sprayed by spinneret (1) in the melt-blowing equipment (I), formed after trapping sheet can electret it is more
Hole base material (3), is drawn by series of drums (2) and is sent into progress charging process in liquid charging equipment (II).Liquid charging equipment
(II) liquid tank (4) and roller (5) are included, liquid tank (4) is used to store treatment liquid (6), and roller (5) includes outer barrel (5-1)
With inner cylinder (5-2), inner cylinder (5-2) high-speed rotation is so that liquid (6) passes through the hole (5-1-1) of outer barrel under the influence of centrifugal force
It is ejected on base material.It is fully dry in drying oven (7) of the base material in drying equipment (III), finally on winding roller (8)
Winding shaping.
As shown in Figure 1, the device includes following four equipment：Melt-blowing equipment (I), charging equipment (II), drying equipment
(III) and winding device (IV).
In device for melt blowing (I), the resin of melting is sprayed by spinneret (1), and form sheet after trapping can electret
Porous substrate (3), drawn by series of drums (2), be sent into charging equipment (II) and carry out charging process.
Charging equipment (II) includes liquid tank (4) and roller (5), and liquid tank is used to store treatment liquid (6), the liquid
Body is deionized water, pure water or the aqueous solution containing electrolyte.Roller includes outer barrel (5-1) and inner cylinder (5-2), wherein, outer barrel
Can be coaxially also not coaxial with inner cylinder, spacing between the two is without particular requirement.
In one embodiment of the utility model, outer barrel surface has equally distributed through hole, the area accounting of through hole
Not less than 50%, not less than 55%, not less than 60%, not less than 65%, not less than 70%.In one embodiment party of the utility model
In formula, in the case where considering not damaging outer tube structure intensity, preferably the area accounting of through hole not less than 60% or is not less than
70%.
In one embodiment of the utility model, the surface of inner cylinder has equally distributed protrusion, the section shape of inner cylinder
Shape is gear shape.The raised section can be selected from semicircle, rectangle, half elliptic, triangle and combinations thereof.
In one embodiment of the utility model, it is described can the porous substrate of electret by the speed of charging equipment be 1
~100 ms/min, preferably 10~50 ms/min.In one embodiment of the utility model, it is described can electret porous base
Material is covered in outer barrel surface and immerses in liquid when by liquid charging equipment, wherein, this can electret porous substrate with it is outer
Cornerite between cylinder is not less than 30 °, not less than 35 °, not less than 40 °, not less than 45 °, not less than 50 °, not less than 60 °, is not less than
70 °, not less than 80 °, not less than 90 °, not less than 100 °, not less than 110 ° or not less than 110 °, it is preferable that this can electret
Cornerite between porous substrate and outer barrel is 40~120 °, 50~120 °, 60~120 °, 70~120 °, 80~120 °, 90~
120 °, 40~110 °, 40~100 °, 40~90 ° or 40~80 °.
In an embodiment of the utility model, outer barrel surface has equally distributed through hole, the area accounting in hole
Not less than 50%, preferably the area accounting of through hole is not less than 70%, and inner cylindrical surface has equally distributed protrusion, preferred cross-sections shape
Shape is gear shape.Inner cylinder high-speed rotation is ejected into base so as to drive liquid to produce centrifugal action by the hole (5-1-1) of outer barrel
So that base material is powered on material.
Finally, the base material after electret is sufficiently dried in the drying device (III) containing drying oven (7),
Finally it is wound on winding roller (8) and winds shaping.
The utility model is described further with reference to specific embodiment, but the utility model be not limited to it is following
Embodiment.With the following Examples as it can be seen that obtained electret material has excellent sky in the utility model embodiment
Gas strainability.
Embodiment 1
Process units according to figure 1, with the polypropylene (Borealis of melt flow index (MFI)=1200
HL512FB) it is raw material, it is 30g/m that grammes per square metre, which is made,2Melt spraying non-woven fabrics, average fibre diameter be 2.5 μm.
Liquid in charging equipment is deionized water.Inner cylinder rotating speed is 200 revs/min, and cross sectional shape is equally distributed 6
Gear shape.The speed that non-woven fabrics passes through charging equipment is 20m/ minutes, and the cornerite with outer barrel is 60 °.
Non-woven fabrics after charging process is by fully dry.
Strainability detection is carried out to obtained electret non-woven fabrics, it is Americanized using all approving in the global industry
8130 type check-out consoles of TSI and its test method tested (32L/ minutes, NaCl aerosols, 0.3 μm).
Strainability is：Resistance 32.5MPa, filter efficiency 93.2%.
Comparative example 1
Fusion spray cloth same as Example 1, it is unique the difference is that interior by liquid charging process same as Example 1
Cylinder rotating speed is 0 rev/min.
Obtained electret non-woven fabrics progress TSI 8130 is tested (32L/ minutes, NaCl aerosols, 0.3 μm), as a result
For：Resistance 32.1MPa, filter efficiency 52.35%.
Embodiment 2
Process units according to figure 1, uses the polypropylene (being purchased from Borealis HL512FB) of MFI=1200 as original
Material, it is 30g/m that grammes per square metre, which is made,2Melt spraying non-woven fabrics, average fibre diameter be 2.5 μm.
Liquid in charging equipment is deionized water.Inner cylinder rotating speed is 800 revs/min, and cross sectional shape is equally distributed 6
Gear shape.The speed that non-woven fabrics passes through charging equipment is 20 ms/min, and the cornerite with outer barrel is 90 °.
Non-woven fabrics after charging process is by fully dry.
Obtained electret non-woven fabrics progress TSI 8130 is tested (32L/ minutes, NaCl aerosols, 0.3 μm), as a result
For：Resistance 31.5MPa, efficiency 94.9%.
Embodiment 3
Process units according to figure 1, uses the polypropylene (Borealis HL512FB) of MFI=1200 as raw material,
It is 30g/m that grammes per square metre, which is made,2Melt spraying non-woven fabrics, average fibre diameter be 2.5 μm.
Liquid in charging equipment is deionized water.Inner cylinder rotating speed is 1500 revs/min, and cross sectional shape is equally distributed
6 gear shapes.The speed that non-woven fabrics passes through charging equipment is 50m/ minutes, and the cornerite with outer barrel is 90 °.
Non-woven fabrics after charging process is by fully dry.
Obtained electret non-woven fabrics progress TSI 8130 is tested (32L/ minutes, NaCl aerosols, 0.3 μm), as a result
For：Resistance 31.0MPa, efficiency 93.3%.
Although the utility model is described in conjunction with the specific embodiments, those skilled in the art can manage
Solution, can be with many modifications may be made and modification to the utility model.It is therefore contemplated that claims are intended to cover
All such modifications and modification in the utility model true spirit and scope.
Claims (9)
1. a kind of liquid charging unit of electret, the device include：
(1) charging equipment, the charging equipment include liquid tank and roller；
Wherein, the liquid tank accommodates liquid,
The roller, which includes inner cylinder and surface, has the outer barrel of through hole, and the outer barrel and inner cylinder are at least partially immersed in the liquid of liquid tank
In body, and
The inner cylinder rotating, the liquid in liquid tank is ejected under the influence of centrifugal force by the through hole of outer barrel can electret
On porous substrate；And
(2) drying equipment.
2. the liquid charging unit of electret as claimed in claim 1, it is characterised in that described device further includes melt-blown
Equipment and/or winding device；
Wherein, the resin of melting sprays in melt-blowing equipment, after trapping formed described in can electret porous substrate；Dry stays
The porous substrate of pole winds shaping on winding device.
3. the liquid charging unit of electret as claimed in claim 1, it is characterised in that the speed of the inner cylinder rotating
For 5~2000 revs/min.
4. the liquid charging unit of electret as claimed in claim 1, it is characterised in that the outer barrel surface has equal
The through hole of even distribution；With
On the basis of the surface area of outer barrel surface, the area accounting of the through hole is not less than 50%.
5. the liquid charging unit of electret as claimed in claim 1, it is characterised in that the surface of the inner cylinder has
Equally distributed protrusion, the cross sectional shape of the inner cylinder is gear shape.
6. the liquid charging unit of electret as claimed in claim 1, it is characterised in that it is described can electret porous base
The translational speed of material in a liquid is 1~100 m/min.
7. the liquid charging unit of electret as claimed in claim 1, it is characterised in that it is described can electret porous base
Cornerite between material and outer barrel is not less than 30 °.
8. the liquid charging unit of electret as claimed in claim 1 or 2, it is characterised in that it is described can electret it is more
Hole base material is selected from the group：Non-woven fabrics, woven fabric, perforated membrane and their compositions.
9. the liquid charging unit of the electret as described in claim 1, it is characterised in that the liquid is deionization
Water, pure water or the aqueous solution containing electrolyte.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720487677.1U CN207307401U (en) | 2017-05-04 | 2017-05-04 | The liquid charging unit of electret |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720487677.1U CN207307401U (en) | 2017-05-04 | 2017-05-04 | The liquid charging unit of electret |
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| CN207307401U true CN207307401U (en) | 2018-05-04 |
Family
ID=62436926
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| CN (1) | CN207307401U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106964199A (en) * | 2017-05-04 | 2017-07-21 | 浙江金海环境技术股份有限公司 | The liquid charging method and device of electret |
| CN110820174A (en) * | 2019-11-20 | 2020-02-21 | 邯郸恒永防护洁净用品有限公司 | Preparation method of polypropylene melt-blown non-woven fabric and electret equipment thereof |
-
2017
- 2017-05-04 CN CN201720487677.1U patent/CN207307401U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106964199A (en) * | 2017-05-04 | 2017-07-21 | 浙江金海环境技术股份有限公司 | The liquid charging method and device of electret |
| CN106964199B (en) * | 2017-05-04 | 2022-08-09 | 浙江金海高科股份有限公司 | Liquid charging method and device for electret material |
| CN110820174A (en) * | 2019-11-20 | 2020-02-21 | 邯郸恒永防护洁净用品有限公司 | Preparation method of polypropylene melt-blown non-woven fabric and electret equipment thereof |
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Address after: 311817, Zhejiang City, Shaoxing province Zhuji City Street Town Industrial Zone Patentee after: Zhejiang Jinhai High Tech Co., Ltd Address before: 311817 Industrial Zone, Ying Dian Jie Town, Zhuji City, Zhejiang, Shaoxing, Zhejiang Patentee before: ZHEJIANG GOLDENSEA ENVIRONMENT TECHNOLOGY Co.,Ltd. |