CN106890506A - A kind of low impedance high efficient energy air filting material and preparation method thereof - Google Patents
A kind of low impedance high efficient energy air filting material and preparation method thereof Download PDFInfo
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- CN106890506A CN106890506A CN201710237033.1A CN201710237033A CN106890506A CN 106890506 A CN106890506 A CN 106890506A CN 201710237033 A CN201710237033 A CN 201710237033A CN 106890506 A CN106890506 A CN 106890506A
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- air filting
- filting material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
-
- 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
- B32B5/14—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 a layer differing constitutionally or physically in different parts, e.g. denser near its faces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/10—Filtering material manufacturing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
Abstract
The invention discloses a kind of low impedance high efficient energy air filting material and preparation method thereof, belong to filtering material field..The air filting material and preparation method thereof reduces resistance when air filting material works while filter efficiency is ensured, reduces energy consumption.Air filting material of the invention, including basic unit and film layer, film layer are fixedly connected on substrate surface, and the basic unit is nonwoven needled filter felt, and film layer is repeatedly to move in circles to be sprayed on the nano-fiber nonwoven layer of substrate surface using electrostatic spinning process.
Description
Technical field
The present invention relates to a kind of air filting material, it particularly relates to a kind of low impedance high efficient energy air filting material
And preparation method thereof.
Background technology
The effect of air filting material is to be intercepted by fiber and catch dust, to reach gas solid separation purpose.Air mistake
Filter material material can intercept the dust in air.As a rule, in order to improve filter efficiency, air filting material is prepared very
It is fine and close.Although the air filting material of densification can improve filter efficiency, resistance when air filting material works is very big,
Cause energy consumption very high.The air filting material of application is mostly with high efficiency, the performance characteristic of high energy consumption now.
The content of the invention
The technical problems to be solved by the invention are：A kind of low impedance high efficient energy air filting material and its preparation side are provided
Method, while filter efficiency is ensured, reduces resistance when air filting material works, and reduces energy consumption.
In order to solve the above technical problems, the embodiment of the present invention uses following technical scheme：
On the one hand, the embodiment of the present invention provides a kind of low impedance high efficient energy air filting material, including basic unit and film layer, film
Layer is fixedly connected on substrate surface, and the basic unit is nonwoven needled filter felt, and film layer is multiple using electrostatic spinning process
Move in circles and be sprayed on the nano-fiber nonwoven layer of substrate surface.
On the other hand, the embodiment of the present invention provides a kind of preparation method of low impedance high efficient energy air filting material, the party
Method includes：
Step 10）The fiber of two kinds of different melting points is fed intake and enters hopper, mix is uniform, and net is carded to through carding machine；Through acupuncture
After consolidation, needle fabric is formed；
Step 20）Needling non-woven is arranged into baking oven, needle fabric is penetrated using hot blast, and make needle fabric
In semi-molten state；Then needle fabric is sent to cold roll in the presence of convoying curtain, carries out quick cold shock and determine
Type, forms as the nonwoven needled filter felt of basic unit；
Step 30）Basic unit is wound with storage cloth holder, storage cloth is placed at the cm of electrospinning device front end 50~75, by base
Layer sprays the carrier of silk as electrostatic spinning；
Step 40）Using needle-less electrospinning device, using solution electrostatic spinning process, nanofiber is sprayed to basic unit's table
Face, nanofiber is settled down to substrate surface, by the injection that repeatedly moves in circles, micro/nano-fibre non-woven is formed in substrate surface
Layer；Basic unit containing nano-fiber nonwoven layer is extruded and rapid condensation, and hot rolled compound, made that nanofiber is non-to be knitted
Layer is made chimeric with basic unit, so as to be made air filting material.
As preference, the step 10）In, the fiber of two kinds of different melting points refers to PET chopped fibers and PP chopped fibers.
Used as preference, the thickness of the PET chopped fibers is 1.5D, and the thickness of PP chopped fibers is 1.35D, and the short fibres of PET
The PP chopped fibers of peacekeeping 1.35D are according to mass ratio 1:1 is mixed.
As preference, the step 20）In, needle fabric is inserted in baking oven according to 3 meters per minute of speed；
The melting temperature of the temperature of the hot blast fiber more relatively low than fusing point is low 8~12 DEG C.
As preference, the step 20）In, the grammes per square metre of basic unit is 80~150g/ ㎡.
As preference, the step 30）In, basic unit is wound with storage cloth holder by speed 2.5m/min.
As preference, the step 40）In, nano-fiber nonwoven layer is to be superimposed 2 in substrate surface by nanofiber
~4 layers of formation.
As preference, the step 40）In, using in solution electrostatic spinning process, the winding speed of basic unit is 2.5m/
min。
As preference, the step 40）In, film layer grammes per square metre is 3~12g/ ㎡, air filting material grammes per square metre≤200
Ke/㎡.
Compared with prior art, air filting material of the embodiment of the present invention and preparation method thereof, is ensuring filter efficiency
While, resistance when air filting material works is reduced, reduce energy consumption.
The embodiment of the present invention by two kinds of melting-point fibers consolidate the high-intensity low-gramweight nonwoven needled filter felt to be formed with it is molten
Nano-fiber film prepared by liquid method it is compound.Nonwoven needled filter felt porosity as supporter is high, it is impossible to used as mistake
Filter medium form is present.But nonwoven needled filter felt solves the problems, such as Electrospun nano-fibers low intensity well.
By jockey pulley extruding and condensation rollers chilling but, can strengthen nano-fiber film layer fitted with nonwoven needled filter felt
Power, further avoids nano-fiber film layer from coming off.
Specific embodiment
The technical scheme of embodiment of the present invention use is described in detail below.
A kind of low impedance high efficient energy air filting material provided in an embodiment of the present invention, including basic unit and film layer.Film
Layer is fixedly connected on substrate surface, and the basic unit is nonwoven needled filter felt, and film layer is multiple using electrostatic spinning process
Move in circles and be sprayed on the nano-fiber nonwoven layer of substrate surface.
In the embodiment, the dust in air is filtered by basic unit and film layer.The grammes per square metre of basic unit be 80~
150g/ ㎡, film layer grammes per square metre is 3~12g/ ㎡, air filting material grammes per square metre≤200 Ke/㎡.So, compared to more existing gram
The great dust removal and filtration Nomex in 450g/ ㎡, the air filting material of the application is the material of ultralow gram weight.Therefore, this Shen
Please air filting material filter efficiency it is higher, meanwhile, impedance is smaller.
The preparation method of the air filting material of above-described embodiment, including：
Step 10）The fiber of two kinds of different melting points is fed intake and enters hopper, mix is uniform, and net is carded to through carding machine；Through acupuncture
After consolidation, needle fabric is formed.
Wherein, step 10）In, the fiber of two kinds of different melting points refers to PET chopped fibers and PP chopped fibers.Preferably, institute
The thickness of PET chopped fibers is stated for 1.5D, the thickness of PP chopped fibers is 1.35D, and the PP chopped fibers of PET chopped fibers and 1.35D are pressed
According to mass ratio 1:1 is mixed.
Step 20）Needling non-woven is arranged into baking oven, needle fabric is penetrated using hot blast, and make that acupuncture is non-to knit
Make cloth and be in semi-molten state；Then needle fabric is sent to cold roll in the presence of convoying curtain, carries out fast quickly cooling
Swash sizing, formed as the nonwoven needled filter felt of basic unit.
Wherein, step 20）In, preferably, needle fabric is inserted in baking oven according to 3 meters per minute of speed.
The melting temperature of the temperature of the hot blast fiber more relatively low than fusing point is low 8~12 DEG C.When hot blast temperature is set and melting temperature phase
When melting temperature, fiber can be melted, so the melting temperature of the temperature of the hot blast fiber more relatively low than fusing point is low by 8
~12 DEG C, when needle fabric is in semi-molten state, form did not both change, also easily bonding between fiber.Basic unit gram
80~150g/ ㎡ are preferably again.
Needle fabric is sent to cold roll in the presence of convoying curtain, quick cold shock sizing is carried out.In this process
In, the low-melting fiber by condensation can form rapidly consolidation obvolvent with high-melting fibre, and fiber is made because melt bonded
Net consolidation, high intensity can be realized under the low grammes per square metre state of formation.And can make between bicomponent fibers by cold roll chilling
Obvolvent is even closer, and intensity is further improved, and reduces elongation, it is possessed the support as nano-fiber film material
Body form is present.The effect of cold roll also makes needle fabric surface more smooth, and is nanofiber uniform on its surface
Sedimentation provides condition.
Step 30）Basic unit is wound with storage cloth holder, storage cloth is placed at the cm of electrospinning device front end 50~75,
Basic unit is sprayed the carrier of silk as electrostatic spinning.
Preferably, step 30）In, basic unit is wound with storage cloth holder by speed 2.5m/min.
Step 40）Using needle-less electrospinning device, using solution electrostatic spinning process, nanofiber is sprayed to base
Layer surface, nanofiber is settled down to substrate surface, and by repeatedly moving in circles injection, in substrate surface formation, nanofiber is non-knits
Make layer；Basic unit containing nano-fiber nonwoven layer is extruded and rapid condensation, and it is hot rolled compound, make nanofiber non-
Weaving layer is chimeric with basic unit, so as to be made air filting material.
Preferably, the step 40）In, nano-fiber nonwoven layer is to be superimposed 2~4 in substrate surface by nanofiber
Layer is formed.Using in solution electrostatic spinning process, the winding speed of basic unit is 2.5m/min.Film layer grammes per square metre is 3~12g/ ㎡,
Air filting material grammes per square metre≤200 Ke/㎡.
Basic unit containing nano-fiber nonwoven layer is extruded, can be realized by jockey pulley.By squeezing action,
Nanofiber can be increased fully to be complexed with the fiber in nonwoven needled filter felt before condensation.Then by the urgency of condensation rollers
Cooling, is improved nano-fiber film drafting force.The filtering material of micro/nano-fibre non-woven film be will be covered with by heat
Roll hot rolling, makes micro/nano-fibre non-woven film be more firmly entrenched togather with basic unit, it is to avoid micro/nano-fibre non-woven is thin
Film comes off from substrate surface.
Air filting material prepared by above-described embodiment, the grammes per square metre of basic unit is 80~150g/ ㎡.Basic unit is that ultralow gram weight is high
Intensity Nomex.The basic unit solves the strength problem of nanofiber itself as the carrier of film layer.
Conventional air filter material is the filter element based on the non-weaving cloth prepared by acupuncture or spun lacing method, to increase
Plus material grammes per square metre and consistency reach high efficiency, grammes per square metre high and larger consistency cause gas permeability to decline, and resistance is big.In order to
Filter efficiency is further improved, the PTFE microporous membranes prepared using drawing method in film adhered one layer of non-woven surfaces are used as entering one
Step safeguard, makes resistance further be lifted, and microporous barrier prepared by drawing method is relative to Electrospun nano-fibers film
Speech, hole is uneven, also declines permeability, and resistance is big.The filter efficiency and resistance of film layer can in the embodiment of the present invention
Adjusted with as needed adjusting the superposition number of plies, and without by the needle fabric as support unit improve compactness and
Grammes per square metre is realized.This is greatly lowered the filter layer of air filting material, reduces material consumption and filtration resistance.
In the preparation method of the embodiment of the present invention, step 40）Using the injection that repeatedly moves in circles, formed in substrate surface and received
Rice fiber nonwoven layer.By rationally setting the superposition number of plies of the nanofiber in basic unit, it is ensured that the filtering of air filting material
The requirement of efficiency and reduction resistance.Step 40）In, nanofiber is directly sprayed and is deposited in substrate surface, applied before uncooled
The technique forced with machinery, enables uniformity, permeability and the hole mesh number of hole to ensure.By rapid condensation and hot rolled
It is compound, make nano-fiber nonwoven layer chimeric with basic unit, overcome the problem that film layer easily comes off from basic unit.
The air filting material of the embodiment of the present invention, in substrate surface there is provided film layer, relative to not passing through membrane filtration
For the general acupuncture and spun lacing filtering material of technique preparation, the air filting material filtering accuracy of the present embodiment is maintained more
High standard.
In the preparation method of the embodiment of the present invention, by the micro/nano-fibre non-woven prepared using solution electrostatic spinning process
Layer, compared to the PTFE membrane filtration materials prepared using drawing method for, hole is more uniform, and micropore hole mesh number is more and film pair
The permeability of air-flow is also higher.
Using solution electrospun film fiber, the nano-scale fiber particularly with diameter less than 60nm has well to particulate matter
Linear longitudinal slip effect feature, make filtering pressure drop reduction.
Inertial impaction different from common micron with higher level's fiber to particulate matter, the present embodiment reduces filtration pressure, institute
Other filter mediums are significantly lower than with overall drag.For the low energy consumption of high-efficient filter dirt equipment realizes guarantee on material.
The embodiment of the present invention, is heated and consolidated using two kinds of melting-point fibers through high temperature, and Electrospun nano-fibers are sprayed
To nonwoven fabric surface and superimposed layer is done, it is solidifying by chilling and surface negative pressure makes film fully chimeric with the fiber of basic unit, it is to avoid film
Material comes off.And prior art is to consolidate fiber by combing, acupuncture to be prepared into the non-woven of fine and close grammes per square metre high >=400g/ ㎡ high
Cloth, the function of the non-weaving cloth is to be filtered into main purpose.Overlay film will be avoided as entering in order to further improve filter efficiency
The option of one step, and the preparation technology of film is prepared by drawing method, hole is uneven.Filtering material manufactured in the present embodiment, be
The smooth effect of the nano-scale fiber prepared with solwution method, the resistance for causing air flow through is less than ordinary filter fiber（Diameter is big
In 500nm）Resistance to air-flow is intercepted.The embodiment of the present invention has overturned the structural of the efficient high resistant of conventional films filtering material
Problem, makes it possible high-effect, the lower resistance of filtrate.
The air filting material of the embodiment of the present invention can be used as the heart-filter bag of industrial sack cleaner, it is possible to resolve
The common fault of industrial bag-type dust collecting equipment high energy consumption, makes industrial pocket type dust filtration equipment while minimum discharge is realized, can more realize
Low energy consumption, reaches the purpose of real energy-conservation.The embodiment of the present invention can also be used for central ventilation system filter dirt and HVAC filtering,
Haze screen window and haze and industrial security protection mouth mask and industrial filter core, filter material for air filters can also be prepared.
Specific embodiment is enumerated below, has verified that the present invention has high intensity, lower resistance and high filtration performance.
Example 1
A kind of preparation method of low impedance high efficient energy air filting material, including：
Step 10）The fiber of two kinds of different melting points is fed intake and enters hopper, mix is uniform, and net is carded to through carding machine；Through acupuncture
After consolidation, needle fabric is formed；Described two different melting points are thickness for the PET chopped fibers and thickness of 1.5D are 1.35D
PP chopped fibers, and PET chopped fibers and 1.35D PP chopped fibers according to mass ratio 1:1 is mixed.
Step 20）Needle fabric is inserted in baking oven according to 3 meters per minute of speed, it is non-to penetrate acupuncture using hot blast
Woven cloths, and needle fabric is in semi-molten state；Then needle fabric is transmitted in the presence of convoying curtain
To cold roll, quick cold shock sizing is carried out, formed as the nonwoven needled filter felt of basic unit；The temperature of the hot blast compares fusing point
The melting temperature of relatively low fiber is low 8 DEG C.
Step 30）Basic unit is wound with storage cloth holder by speed 2.5m/min, before storage cloth is placed on electrospinning device
At 50~75 cm of end, basic unit is sprayed the carrier of silk as electrostatic spinning；
Step 40）Using needle-less electrospinning device, using solution electrostatic spinning process, the winding speed of basic unit is 2.5m/
Min, nanofiber is sprayed to substrate surface, and nanofiber is settled down to substrate surface, by the injection that repeatedly moves in circles, in base
Layer surface forms 4 layers of nano-fiber nonwoven layer；Basic unit containing nano-fiber nonwoven layer is extruded and rapid condensation,
And it is hot rolled compound, make nano-fiber nonwoven layer chimeric with basic unit, so as to be made air filting material.
The air filting material grammes per square metre that examples detailed above is made is 160 Ke/㎡.
Comparative example 1
Existing air filting material, material is terylene micropore film filtrate, and grammes per square metre is 460 Ke/㎡.
Carry out strength test, filter efficiency test and resistance measurement respectively to example 1 and comparative example 1.Wherein, strength test according to
The method of state label GB/T6719-2009 is carried out.Filter efficiency test is carried out according to the method for state label GB/T6719-2009.
Resistance measurement is carried out according to the method for state label GB/T6719-2009.Test result is as shown in table 1.
Table 1
As can be seen from Table 1：The intensity and filter effect of example 1 and comparative example 1 are essentially identical, but the resistance coefficient of example 1 is only
Have 1/3 or so of comparative example 1.It can be seen that, the resistance of the air filting material of this example 1 is substantially reduced.
The basic principles, principal features and advantages of the present invention have been shown and described above.Those skilled in the art should
Understand, the present invention do not limited by above-mentioned specific embodiment, the description in above-mentioned specific embodiment and specification be intended merely into
One step illustrates principle of the invention, without departing from the spirit and scope of the present invention, the present invention also have various change and
Improve, these changes and improvements all fall within the protetion scope of the claimed invention.The scope of protection of present invention will by right
Ask book and its equivalent thereof.
Claims (10)
1. a kind of low impedance high efficient energy air filting material, it is characterised in that including basic unit and film layer, film layer is fixedly connected
In substrate surface, the basic unit is nonwoven needled filter felt, and film layer is the spray that repeatedly moved in circles using electrostatic spinning process
It is coated in the nano-fiber nonwoven layer of substrate surface.
2. a kind of preparation method of low impedance high efficient energy air filting material, it is characterised in that the method includes：
Step 10）The fiber of two kinds of different melting points is fed intake and enters hopper, mix is uniform, and net is carded to through carding machine；Through acupuncture
After consolidation, needle fabric is formed；
Step 20）Needling non-woven is arranged into baking oven, needle fabric is penetrated using hot blast, and make needle fabric
In semi-molten state；Then needle fabric is sent to cold roll in the presence of convoying curtain, carries out quick cold shock and determine
Type, forms as the nonwoven needled filter felt of basic unit；
Step 30）Basic unit is wound with storage cloth holder, storage cloth is placed at the cm of electrospinning device front end 50~75, by base
Layer sprays the carrier of silk as electrostatic spinning；
Step 40）Using needle-less electrospinning device, using solution electrostatic spinning process, nanofiber is sprayed to basic unit's table
Face, nanofiber is settled down to substrate surface, by the injection that repeatedly moves in circles, micro/nano-fibre non-woven is formed in substrate surface
Layer；Basic unit containing nano-fiber nonwoven layer is extruded and rapid condensation, and hot rolled compound, made that nanofiber is non-to be knitted
Layer is made chimeric with basic unit, so as to be made air filting material.
3. according to the preparation method of the low impedance high efficient energy air filting material described in claim 2, it is characterised in that the step
Rapid 10）In, the fiber of two kinds of different melting points refers to PET chopped fibers and PP chopped fibers.
4. according to the preparation method of the low impedance high efficient energy air filting material described in claim 3, it is characterised in that described
The thickness of PET chopped fibers is 1.5D, and the thickness of PP chopped fibers is 1.35D, and PET chopped fibers and 1.35D PP chopped fibers according to
Mass ratio 1:1 is mixed.
5. according to the preparation method of the low impedance high efficient energy air filting material described in claim 2, it is characterised in that the step
Rapid 20）In, needle fabric is inserted in baking oven according to 3 meters per minute of speed；The temperature of the hot blast is more relatively low than fusing point
Fiber melting temperature it is low 8~12 DEG C.
6. according to the preparation method of the low impedance high efficient energy air filting material described in claim 5, it is characterised in that the step
Rapid 20）In, the grammes per square metre of basic unit is 80~150g/ ㎡.
7. according to the preparation method of the low impedance high efficient energy air filting material described in claim 2, it is characterised in that the step
Rapid 30）In, basic unit is wound with storage cloth holder by speed 2.5m/min.
8. according to the preparation method of the low impedance high efficient energy air filting material described in claim 2, it is characterised in that the step
Rapid 40）In, nano-fiber nonwoven layer is to be superimposed 2~4 layers in substrate surface by nanofiber to be formed.
9. according to the preparation method of the low impedance high efficient energy air filting material described in claim 2, it is characterised in that the step
Rapid 40）In, using in solution electrostatic spinning process, the winding speed of basic unit is 2.5m/min.
10. according to the preparation method of the low impedance high efficient energy air filting material described in claim 2, it is characterised in that described
Step 40）In, film layer grammes per square metre is 3~12g/ ㎡, air filting material grammes per square metre≤200 Ke/㎡.
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| CN109572082A (en) * | 2019-01-15 | 2019-04-05 | 山东蓝色时光新材料有限公司 | A kind of composite cellulosic membrane and preparation method can be used for efficient low-resistance haze mask |
| CN110917727A (en) * | 2019-12-13 | 2020-03-27 | 上海博格工业用布有限公司 | Filter material with PET/COPET double-component low-melting-point fibers mixed in surface layer of polyester needled felt and preparation method of filter material |
| CN111038055A (en) * | 2019-12-30 | 2020-04-21 | 南通大学 | Lubricating oil filter felt for automobiles and industries and preparation method thereof |
| CN112376119A (en) * | 2020-11-11 | 2021-02-19 | 泉州师范学院(石狮)生态智能织物工程技术研究院 | High-efficiency and low-resistance filtering membrane and application thereof in mask fabric |
| CN113085320A (en) * | 2021-04-08 | 2021-07-09 | 泉州师范学院(石狮)生态智能织物工程技术研究院 | Biodegradable high-efficiency filtering mask fabric and preparation method thereof |
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