CN104722216B - Preparation method for composite air filter membrane - Google Patents
Preparation method for composite air filter membrane Download PDFInfo
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- CN104722216B CN104722216B CN201510111643.8A CN201510111643A CN104722216B CN 104722216 B CN104722216 B CN 104722216B CN 201510111643 A CN201510111643 A CN 201510111643A CN 104722216 B CN104722216 B CN 104722216B
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- 239000012528 membrane Substances 0.000 title claims abstract description 64
- 239000002131 composite material Substances 0.000 title claims abstract description 57
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 229920000642 polymer Polymers 0.000 claims abstract description 110
- 239000000463 material Substances 0.000 claims abstract description 86
- 239000004744 fabric Substances 0.000 claims abstract description 46
- 238000000034 method Methods 0.000 claims abstract description 24
- 239000002121 nanofiber Substances 0.000 claims abstract description 18
- 239000000758 substrate Substances 0.000 claims description 83
- 238000009987 spinning Methods 0.000 claims description 71
- 238000009941 weaving Methods 0.000 claims description 42
- 238000001914 filtration Methods 0.000 claims description 41
- 239000004743 Polypropylene Substances 0.000 claims description 32
- 229920001155 polypropylene Polymers 0.000 claims description 31
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 30
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 27
- 239000000835 fiber Substances 0.000 claims description 26
- 238000003466 welding Methods 0.000 claims description 25
- 229920004933 Terylene® Polymers 0.000 claims description 22
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 22
- -1 Merlon Polymers 0.000 claims description 18
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims description 18
- 239000002904 solvent Substances 0.000 claims description 17
- 238000005374 membrane filtration Methods 0.000 claims description 16
- 239000002184 metal Substances 0.000 claims description 16
- 230000005611 electricity Effects 0.000 claims description 14
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 12
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 claims description 10
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 claims description 9
- 239000004677 Nylon Substances 0.000 claims description 9
- 235000019253 formic acid Nutrition 0.000 claims description 9
- 229920001778 nylon Polymers 0.000 claims description 9
- 150000001875 compounds Chemical class 0.000 claims description 7
- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 claims description 5
- 239000004793 Polystyrene Substances 0.000 claims description 5
- 238000001467 acupuncture Methods 0.000 claims description 5
- 229920002492 poly(sulfone) Polymers 0.000 claims description 5
- 229920002239 polyacrylonitrile Polymers 0.000 claims description 5
- 239000004814 polyurethane Substances 0.000 claims description 5
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 3
- OHLUUHNLEMFGTQ-UHFFFAOYSA-N N-methylacetamide Chemical compound CNC(C)=O OHLUUHNLEMFGTQ-UHFFFAOYSA-N 0.000 claims description 2
- 239000004695 Polyether sulfone Substances 0.000 claims 1
- 229920006393 polyether sulfone Polymers 0.000 claims 1
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- 229920002635 polyurethane Polymers 0.000 claims 1
- 238000013329 compounding Methods 0.000 abstract description 32
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- 239000007921 spray Substances 0.000 description 12
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- 229920002981 polyvinylidene fluoride Polymers 0.000 description 5
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- 239000002105 nanoparticle Substances 0.000 description 4
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- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000005253 cladding Methods 0.000 description 2
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 2
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Landscapes
- Filtering Materials (AREA)
- Nonwoven Fabrics (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
Abstract
The invention relates to a preparation method for a composite air filter membrane, and belongs to the technical field of air filter. The method comprises the following steps: loading a layer of a high-molecular polymer nanofibre membrane material on a non-woven cloth material as a filter layer through a processing method of electrostatic spinning, then loading a layer of a breathable support material made from the same material or other materials on the surface of the composite material by virtue of ultrasonic compounding, thus forming the efficient composite air filter membrane, and producing a pleating filter through pleat processing. The efficient composite air filter membrane prepared by the method disclosed by the invention is good in pleating performance, low in air resistance and long in service life, has an excellent PM0.3-PM10 filtrability, and can be used for a respirator material under atrocious weather conditions. According to the method, the low-density nano-membrane provides great particle filterability, and the breathable support material provides rigidity, so that the composite material is easily subjected to the pleat processing.
Description
Technical field
The present invention relates to a kind of preparation method of composite air filtering film, belong to air filtration technical field.
Background technology
With the pay attention to day by day to atmospheric environment and IAQ for the people, environmental standard is increasingly strict, height to be reached
The air purity of grade, selected filtering material needs exist for superior strainability.In recent years, all kinds of highly effective air mistakes
Filter material material has made great progress.High-efficiency air filtering material has that filter efficiency is high, gas-flow resistance is little, mechanical strength is big and equal
The features such as even property is good, can meet the filter material to air filting material special functional demands for the specific industry.
Commercial filtering material mainly has at present: (1) melt-blown electret non-woven fabric material, such as patent us4874659,
Us4178157, and melt-blowing nonwoven combined with all-glass paper, such as patent cn101352631；(2) nano-sized membrane,
As patent cn101795747 discloses a kind of nanofiber filtration material being made up of fiber and microballon, patent cn03129430
A kind of polytetrafluoroethylcomposite composite film filtering material announced.
In order to effectively improve the filter efficiency of filtering material, generally filtering material is carried out with pleating processing, increase filtering surface
Amass thus improving its filter efficiency.
Melt-blown electret non-woven fabric material is the effective seizure realizing particle based on electrostatic charge, this filtering material
Performance is had a strong impact on by air humidity, produces charge loss, when electrostatic charge is because adsorbing under its performance when molecule is neutralized
Fall.And melt-blown non-woven cloth material thickness of thin itself, soft, poor rigidity, are not suitable for pleating processing.But use glass
The melt-blown non-woven cloth material of fiber composite, because glass fibre paper structure is intensive, space is little and few, can lead to filtration resistance
Greatly, and glass fibre is relatively brittle during rivel, cause loss of yield.
Nano-sized membrane, especially electrospun fiber membrane low intensity, and prepare the electrospinning film shortage economy of high areal density, because
This is used simple nano-sized membrane to be unable to reach its optimum filtration effect as filtering material when using.But other membrane materials
Processing mode, such as patent cn03129430 use phase in version mode pore-creating film forming, and the aperture of film is uncontrollable, thus causing its mistake
The uncontrollability of filter precision.
Method of electrostatic spinning is chemical fibre conventional solution dry spinning and the new development of melt spinning, is current nanofiber
Manufacture topmost method Deng superfine fibre.Have significantly different from traditional method, it is by polymer solution or melt band
Upper thousand of to up to ten thousand volt high-pressure electrostatics.The core of this technology, is to make charged Polymer Solution or melt in electrostatic field
Flowing and deformation, when electric field force is sufficiently large, polymer drop can overcome surface tension to form injection thread.Then steam through solvent
Send out or melt cooling and solidify and obtain fibrous material, therefore this process is referred to as electrostatic spinning.Electrostatic spinning nano fiber at present
It is difficult to be collected separately, typically finally all fall on the reception device, form the fibrofelt being similar to non-woven cloth-like.
Because electrostatic spinning nano fiber diameter is thin, specific surface area big, shown excellent by this fibroplastic non-weaving cloth
Good absorption property, can be used as adsorbing medium, cladding activated carbon, biocide etc., the biochemistry making of these fibers
Protective garment, can be efficiently absorbed and degrade harmful liquid and gas.This electro-spinning nano fibre nonwoven is also simultaneously
The excellent filtration material of efficient low-resistance, a size of 0.3 μm of fine particle can be captured by such filtering material easily；Except
Meet conventional filtration, after this polymer nanofiber selective body composite coatings with other, can also be applied to as molecule
Isolation of filtration, chemistry and biochemical drug etc..Because nanofiber has very high specific surface area so as to application obtains more
Big expansion, also acts as bio-medical material, cell culture medium, implantation organ, the basic substance of tissue carrier.
Content of the invention:
The purpose of the present invention is to propose to a kind of preparation method of composite air filtering film, by the processing side of electrostatic spinning
Method, loads a floor height Molecularly Imprinted Polymer micro/nano fibrous membrane material on non-woven fabric material as filter layer, then utilizes ultrasonic
The method that ripple is combined loads on the surface of this composite that one layer identical or the gas permeability backing material of other materials again, thus structure
Become efficient compound air filter membrane, discounting filter is made by pleating processing.
The preparation method of composite air filtering film proposed by the present invention, comprises the following steps:
(1) nonwoven substrate is laid on the metallic plate of inner ground, described nonwoven substrate is washed for spun lacing
Synthetic fibre/polypropylene (pet/pp) or PLA (pla), the surface density of described non-weaving cloth is 40～85g/m2；
(2) nanofiber membrane polymer is dissolved in solvent, obtains polymer solution, the percent mass of polymer solution
Specific concentration is 10～20wt%, described nanofiber membrane polymer is nylon (pa), polyacrylonitrile (pan), polysulfones (psu),
In Kynoar (pvdf) or polyether sulfone (pes), polyurethane (pu), Merlon (pc), polystyrene (ps) any one
Kind, solvent be formic acid, acetic acid, chloroform, n, n- dimethylformamide (dmf), dimethylacetylamide (dmac), acetone (ac), four
One of hydrogen furans (thf), CTAB (ctab) or two kinds are mixed with certain proportion, described molten
The mixed proportion of agent is 1:1～1:199；
(3) above-mentioned polymer solution is added in micro syringe, controls ambient humidity to be 30～60%, make micro note
Emitter is connected by pipeline with spinning syringe needle, makes spinning syringe needle be placed in the top that above-mentioned tiling has the metallic plate of non-weaving cloth, spins
Silk syringe needle is 10～40cm with the spacing of metallic plate, applies one 12～33 kilovolts of high pressure between spinning syringe needle and metallic plate
Electricity, is made to be reached the polymer solution spinning syringe needle from micro syringe by pipeline, is sprayed with the flow of 0.1～4ml/h super
Thin polymer fiber, ultra-fine polymer fibre drops on the nonwoven substrate of metal sheet surface, collects nonwoven substrate
On ultra-fine polymer fibre, obtain nano fibrous membrane filter layer material；
(4) nonwoven substrate having loaded nano fibrous membrane filtration layer material is taken off from metallic plate, upper strata is non-
Woven cloths are covered in the above-mentioned nano fibrous membrane that loaded and filter on the nonwoven substrate of layer material, using ultrasonic wave composite square
Method, 3-layer composite material is welded into composite air filtering film, the ultrasonic frequency of ultrasonic wave compound tense is 20khz, welding pressure
Power is 50～200 newton, and described upper strata nonwoven substrate is acupuncture terylene (pet), spun lacing terylene/polypropylene (pet/pp)
Or spunbond polypropylene (pp), the surface density of described upper strata non-weaving cloth is 50～85g/m2.
The preparation method of composite air filtering film proposed by the present invention, its advantage is:
1st, the efficient compound air filter membrane of the inventive method preparation, its pleating performance is good, and windage is low, long service life,
There is the filterability of superior pm0.3～pm10, can be used for the mask material under adverse weather condition.
2nd, the nano fibrous membrane of the electrostatic spinning in the inventive method, fibre diameter is controlled, thereby may be ensured that good
Pore size and porosity, be that composite provides good particulate blocking, nonwoven substrate is as matrix simultaneously
Material provides good bursting and fracture strength, low-density nanometer film can be made to provide particulate filtered well, breathes freely
Property backing material then provide rigidity so that composite is easy to carry out pleating processing.
Brief description
Fig. 1 is the structural representation of the electrostatic spinning apparatus that preparation method of the present invention is related to.
Fig. 2 is the electromicroscopic photograph of the composite air filtering film of the inventive method preparation.
In Fig. 1,1 is syringe, and 2 is spinning syringe needle, and 3 is high-voltage DC power supply, and 4 is non-weaving cloth, and 5 is metal plate.
Specific embodiment
The preparation method of composite air filtering film proposed by the present invention, comprises the following steps:
(1) nonwoven substrate is laid on the metallic plate of inner ground, described nonwoven substrate is washed for spun lacing
Synthetic fibre/polypropylene (pet/pp) or PLA (pla), the surface density of described non-weaving cloth is 40～85g/m2；
(2) nanofiber membrane polymer is dissolved in solvent, obtains polymer solution, the percent mass of polymer solution
Specific concentration is 10～20wt%, described nanofiber membrane polymer is nylon (pa), polyacrylonitrile (pan), polysulfones (psu),
In Kynoar (pvdf) or polyether sulfone (pes), polyurethane (pu), Merlon (pc), polystyrene (ps) any one
Kind, solvent be formic acid, acetic acid, chloroform, n, n- dimethylformamide (dmf), dimethylacetylamide (dmac), acetone (ac), four
One of hydrogen furans (thf), CTAB (ctab) or two kinds are mixed with certain proportion, described molten
The mixed proportion of agent is 1:1～1:199；
(3) above-mentioned polymer solution is added in micro syringe, controls ambient humidity to be 30～60%, make micro note
Emitter is connected by pipeline with spinning syringe needle, makes spinning syringe needle be placed in the top that above-mentioned tiling has the metallic plate of non-weaving cloth, spins
Silk syringe needle is 10～40cm with the spacing of metallic plate, applies one 12～33 kilovolts of high pressure between spinning syringe needle and metallic plate
Electricity, is made to be reached the polymer solution spinning syringe needle from micro syringe by pipeline, is sprayed with the flow of 0.1～4ml/h super
Thin polymer fiber, ultra-fine polymer fibre drops on the nonwoven substrate of metal sheet surface, collects nonwoven substrate
On ultra-fine polymer fibre, obtain nano fibrous membrane filter layer material, the schematic diagram of electrostatic spinning such as Fig. 1 institute in this step
Show, in Fig. 1,1 is syringe, 2 is spinning syringe needle, and 3 is high-voltage DC power supply, and 4 is non-weaving cloth, and 5 is metal plate；
(4) nonwoven substrate having loaded nano fibrous membrane filtration layer material is taken off from metallic plate, upper strata is non-
Woven cloths are covered in the above-mentioned nano fibrous membrane that loaded and filter on the nonwoven substrate of layer material, using ultrasonic wave composite square
Method, 3-layer composite material is welded into composite air filtering film, the ultrasonic frequency of ultrasonic wave compound tense is 20khz, welding pressure
Power is 50～200 newton, and described upper strata nonwoven substrate is acupuncture terylene (pet), spun lacing terylene/polypropylene (pet/pp)
Or spunbond polypropylene (pp), the surface density of described upper strata non-weaving cloth is 50～85g/m2.
In the inventive method, can be according to the difficulty or ease of non-weaving cloth aeration, the surface topography of nonwoven substrate, Rong Chen
Amount to select nonwoven substrate with mechanical strength.Nonwoven substrate can be that acupuncture terylene (pet) non-weaving cloth, spun lacing are washed
Synthetic fibre/polypropylene (pet/pp) non-weaving cloth, PLA (pla) non-weaving cloth, spunbond polypropylene (pp) non-weaving cloth, from economy
Consider with machinability, preferably spun lacing terylene/polypropylene (pet/pp) non-weaving cloth, surface density controls in 40～85g/m2.
In the inventive method, the polymeric material of nano fibrous membrane can be nylon (pa), polyacrylonitrile (pan), polysulfones
(psu), in Kynoar (pvdf) or polyether sulfone (pes), polyurethane (pu), Merlon (pc), polystyrene (ps)
Any one, solvent is formic acid, acetic acid, chloroform, n, n- dimethylformamide (dmf), dimethylacetylamide (dmac), acetone
(ac), one of oxolane (thf), CTAB (ctab) or two kinds are mixed with certain proportion
Close.Consider that polymeric material is preferably nylon (pa) from economy and environment friendly, solvent is formic acid, acetic acid.
Polymer solution concentration less than during 5wt% cannot fibrillatable, then cannot spray from slinning cabinet more than during 20wt%,
The concentration of therefore preferred polymers solution is 10～20%.
During electrostatic spinning processing, the polymer solution extrusion too small tunica fibrosa that is easily caused of flow is uneven, causes filterability
Difference, the excessive dropping liquid that easily causes of extrusion flow leads to tunica fibrosa damaged, therefore electrospinning when polymer solution extrusion flow be 0.1～
4ml/h.
During electrostatic spinning, voltage is 10～40 kilovolts；Ambient humidity is 30～60%.Spinning syringe needle with receive storeroom away from
For 10～40cm.
Control the fibre diameter that can make to be 0.01～0.3 μm by process above；Thickness is 0.5～5 μm of nanofiber
Membrane filtration layer material.Nano-sized membrane aperture is 0.1～2.5 μm.The porosity of membrane material is 70～98%.
The Compound Machining of composite
By hot pressing, ultrasonic wave be combined etc. post-processing technology by nonwoven substrate, layers of nanofibers and skeleton strengthen
Material cladding sandwiches the composite filter material of sandwich structure, is allowed to meet the use requirement of Filterses further.
In order to increase the pleating processing performance of composite and protect layers of nanofibers further, must be in above-mentioned technique manufacture
Composite basis on increase by one layer of skeleton non-woven fabric material, improve composite rigidity, be easy to pleating processing, this bone
Frame material can be glass fiber reinforcement non-weaving cloth, wet laid nonwovens, thermal non-woven fabric, considers from machinability,
It is preferably wet laid nonwovens.
Combination process can be that roller pricks hot pressing, ultrasonic wave is combined, in order to ensure micro/nano fibrous membrane material integrality, preferably super
Sound wave combination process.
The composite air filtering membrane material being processed into by above-mentioned each technique, has that pleating performance is good, and windage is low, uses
Life-span length, has the filterability of superior pm0.3～pm10.It is 150m in air quantity3Under/h test condition, windage is less than
100pa, pm0.3 filterability is more than 99.6%.
The embodiment of the inventive method introduced below:
Embodiment 1
(1) surface density is 85g/m2Spun lacing terylene/polypropylene (pet/pp) nonwoven substrate be laid in inside and connect
On the metallic plate on ground；
(2) nano fibrous membrane polymer nylon (pa) is dissolved in formic acid, acetic acid mixed proportion is in the solvent of 4:1, obtains
To polymer solution, the mass percent concentration of polymer solution is 12wt%；
(3) above-mentioned polymer solution is added in micro syringe, controls ambient humidity to be 60%, make micro syringe
It is connected by pipeline with spinning syringe needle, make spinning syringe needle be placed in the top that above-mentioned tiling has the metallic plate of non-weaving cloth, spinning pin
Head is 15cm with the spacing of metallic plate, applies one 33 kilovolts of high-tension electricity, make by pipe between spinning syringe needle and metallic plate
Road reaches the polymer solution spinning syringe needle from micro syringe, sprays ultra-fine polymer fibre with the flow of 0.1ml/h, surpasses
Thin polymer fiber drops on the nonwoven substrate of metal sheet surface, and the ultra-fine polymer collected on nonwoven substrate is fine
Dimension, obtains nano fibrous membrane and filters layer material；
(4) nonwoven substrate having loaded nano fibrous membrane filtration layer material is taken off from metallic plate, by face layer
Density is 85g/m2Spun lacing terylene/polypropylene (pet/pp) non-weaving cloth be covered in and above-mentioned loaded nano fibrous membrane filter layer
On the nonwoven substrate of material, using ultrasonic wave complex method, 3-layer composite material welding is obtained composite air filtering film,
In embodiments of the invention, ultrasonic wave composition operation adopts the jp-60s type that Changzhou Jing Pu automation equipment Co., Ltd produces
Ultrasonic wave compounding machine, the operating frequency of ultrasonic wave is 20khz, and welding pressure is 50 newton.
The electron microscope of composite air filtering film manufactured in the present embodiment is as shown in Figure 2.
Embodiment 2
(1) surface density is 85g/m2Spun lacing terylene/polypropylene (pet/pp) nonwoven substrate be laid in inside and connect
On the metallic plate on ground；
(2) nano fibrous membrane polymer nylon (pa) is dissolved in formic acid, the mixed proportion of acetic acid is in the solvent of 4:1,
Obtain polymer solution, the mass percent concentration of polymer solution is 12wt%；
(3) above-mentioned polymer solution is added in micro syringe, controls ambient humidity to be 60%, make micro syringe
It is connected by pipeline with spinning syringe needle, make spinning syringe needle be placed in the top that above-mentioned tiling has the metallic plate of non-weaving cloth, spinning pin
Head is 15cm with the spacing of metallic plate, applies one 33 kilovolts of high-tension electricity, make by pipe between spinning syringe needle and metallic plate
Road reaches the polymer solution spinning syringe needle from micro syringe, sprays ultra-fine polymer fibre with the flow of 0.1ml/h, surpasses
Thin polymer fiber drops on the nonwoven substrate of metal sheet surface, and the ultra-fine polymer collected on nonwoven substrate is fine
Dimension, obtains nano fibrous membrane and filters layer material；
(4) nonwoven substrate having loaded nano fibrous membrane filtration layer material is taken off from metallic plate, by another layer
Surface density is 50g/m2Spunbond polypropylene (pp) non-weaving cloth be covered in the above-mentioned nano fibrous membrane that loaded and filter layer material
On nonwoven substrate, using ultrasonic wave compounding machine, 3-layer composite material welding is obtained composite air filtering film, described is super
Sound wave compounding machine is Changzhou Jing Pu automation equipment Co., Ltd jp-60s type ultrasonic wave compounding machine, described ultrasonic wave work frequency
Rate is 20khz, and welding pressure is 50 newton.
Embodiment 3
(1) surface density is 85g/m2Spun lacing terylene/polypropylene (pet/pp) nonwoven substrate be laid in inside and connect
On the metallic plate on ground；
(2) nano fibrous membrane polymer nylon (pa) is dissolved in formic acid, the mixed proportion of acetic acid is in the solvent of 4:1,
Obtain polymer solution, the mass percent concentration of polymer solution is 12wt%；
(3) above-mentioned polymer solution is added in micro syringe, controls ambient humidity to be 60%, make micro syringe
It is connected by pipeline with spinning syringe needle, make spinning syringe needle be placed in the top that above-mentioned tiling has the metallic plate of non-weaving cloth, spinning pin
Head is 15cm with the spacing of metallic plate, applies one 33 kilovolts of high-tension electricity, make by pipe between spinning syringe needle and metallic plate
Road reaches the polymer solution spinning syringe needle from micro syringe, sprays ultra-fine polymer fibre with the flow of 0.1ml/h, surpasses
Thin polymer fiber drops on the nonwoven substrate of metal sheet surface, and the ultra-fine polymer collected on nonwoven substrate is fine
Dimension, obtains nano fibrous membrane and filters layer material；
(4) nonwoven substrate having loaded nano fibrous membrane filtration layer material is taken off from metallic plate, by another layer
Surface density is 60g/m2Acupuncture terylene (pet) non-weaving cloth be covered in above-mentioned loaded nano fibrous membrane filter layer material non-
On weaving cloth base material, using ultrasonic wave compounding machine, 3-layer composite material welding is obtained composite air filtering film, described is ultrasonic
Ripple compounding machine is Changzhou Jing Pu automation equipment Co., Ltd jp-60s type ultrasonic wave compounding machine, described ultrasound working frequency
For 20khz, welding pressure is 50 newton.
Embodiment 4
(1) surface density is 40g/m2PLA (pla) nonwoven substrate be laid on the metallic plate of inner ground；
(2) nano fibrous membrane polymer nylon (pa) is dissolved in formic acid, the mixed proportion of acetic acid is in the solvent of 4:1,
Obtain polymer solution, the mass percent concentration of polymer solution is 12wt%；
(3) above-mentioned polymer solution is added in micro syringe, controls ambient humidity to be 60%, make micro syringe
It is connected by pipeline with spinning syringe needle, make spinning syringe needle be placed in the top that above-mentioned tiling has the metallic plate of non-weaving cloth, spinning pin
Head is 15cm with the spacing of metallic plate, applies one 33 kilovolts of high-tension electricity, make by pipe between spinning syringe needle and metallic plate
Road reaches the polymer solution spinning syringe needle from micro syringe, sprays ultra-fine polymer fibre with the flow of 0.1ml/h, surpasses
Thin polymer fiber drops on the nonwoven substrate of metal sheet surface, and the ultra-fine polymer collected on nonwoven substrate is fine
Dimension, obtains nano fibrous membrane and filters layer material；
(4) nonwoven substrate having loaded nano fibrous membrane filtration layer material is taken off from metallic plate, by another layer
Surface density is 85g/m2Spun lacing terylene/polypropylene (pet/pp) non-weaving cloth be covered in and above-mentioned loaded nanofiber membrane filtration
On the nonwoven substrate of layer material, using ultrasonic wave compounding machine, 3-layer composite material welding is obtained composite air filtering film,
Described ultrasonic wave compounding machine is Changzhou Jing Pu automation equipment Co., Ltd jp-60s type ultrasonic wave compounding machine, described ultrasonic
Ripple operating frequency is 20khz, and welding pressure is 50 newton.
Embodiment 5
(1) surface density is 85g/m2Spun lacing terylene/polypropylene (pet/pp) nonwoven substrate be laid in inside and connect
On the metallic plate on ground；
(2) nano fibrous membrane polymer poly acrylonitrile (pan) is dissolved in n, n- dimethylformamide (dmf) or dimethyl
Any one in acetamide (dmac), obtains polymer solution, the mass percent concentration of polymer solution is 10wt%；
(3) above-mentioned polymer solution is added in micro syringe, controls ambient humidity to be 35%, make micro syringe
It is connected by pipeline with spinning syringe needle, make spinning syringe needle be placed in the top that above-mentioned tiling has the metallic plate of non-weaving cloth, spinning pin
Head is 25cm with the spacing of metallic plate, applies one 22.5 kilovolts of high-tension electricity, make to pass through between spinning syringe needle and metallic plate
Pipeline reaches the polymer solution spinning syringe needle from micro syringe, sprays ultra-fine polymer fibre with the flow of 1ml/h, surpasses
Thin polymer fiber drops on the nonwoven substrate of metal sheet surface, and the ultra-fine polymer collected on nonwoven substrate is fine
Dimension, obtains nano fibrous membrane and filters layer material；
(4) nonwoven substrate having loaded nano fibrous membrane filtration layer material is taken off from metallic plate, by another layer
Surface density is 50g/m2Spunbond polypropylene (pp) non-weaving cloth be covered in the above-mentioned nano fibrous membrane that loaded and filter layer material
On nonwoven substrate, using ultrasonic wave compounding machine, 3-layer composite material welding is obtained composite air filtering film, described is super
Sound wave compounding machine is Changzhou Jing Pu automation equipment Co., Ltd jp-60s type ultrasonic wave compounding machine, described ultrasonic wave work frequency
Rate is 20khz, and welding pressure is 150 newton.
Embodiment 6
(1) surface density is 85g/m2Spun lacing terylene/polypropylene (pet/pp) nonwoven substrate be laid in inside and connect
On the metallic plate on ground；
(2) nano fibrous membrane polymer polysulfones (psu) is dissolved in n, n- dimethylformamide (dmf) or dimethylacetamide
In the solvent that any one in amine (dmac) is 9:1 with acetone (ac) mixed proportion, obtain polymer solution, polymer solution
Mass percent concentration is 12wt%；
(3) above-mentioned polymer solution is added in micro syringe, controls ambient humidity to be 30%, make micro syringe
It is connected by pipeline with spinning syringe needle, make spinning syringe needle be placed in the top that above-mentioned tiling has the metallic plate of non-weaving cloth, spinning pin
Head is 20cm with the spacing of metallic plate, applies one 12 kilovolts of high-tension electricity, make by pipe between spinning syringe needle and metallic plate
Road reaches the polymer solution spinning syringe needle from micro syringe, sprays ultra-fine polymer fibre with the flow of 4ml/h, ultra-fine
Polymer fiber drops on the nonwoven substrate of metal sheet surface, and the ultra-fine polymer collected on nonwoven substrate is fine
Dimension, obtains nano fibrous membrane and filters layer material；
(4) nonwoven substrate having loaded nano fibrous membrane filtration layer material is taken off from metallic plate, by another layer
Surface density is 50g/m2Spunbond polypropylene (pp) non-weaving cloth be covered in the above-mentioned nano fibrous membrane that loaded and filter layer material
On nonwoven substrate, using ultrasonic wave compounding machine, 3-layer composite material welding is obtained composite air filtering film, described is super
Sound wave compounding machine is Changzhou Jing Pu automation equipment Co., Ltd jp-60s type ultrasonic wave compounding machine, described ultrasonic wave work frequency
Rate is 20khz, and welding pressure is 50 newton.
Embodiment 7
(1) surface density is 85g/m2Spun lacing terylene/polypropylene (pet/pp) nonwoven substrate be laid in inside and connect
On the metallic plate on ground；
(2) nano fibrous membrane polymer polyvinylidene fluoride (pvdf) is dissolved in n, n- dimethylformamide (dmf) or two
Any one in methylacetamide (dmac), obtains polymer solution, the mass percent concentration of polymer solution is 10wt%；
(3) above-mentioned polymer solution is added in micro syringe, controls ambient humidity to be 40%, make micro syringe
It is connected by pipeline with spinning syringe needle, make spinning syringe needle be placed in the top that above-mentioned tiling has the metallic plate of non-weaving cloth, spinning pin
Head is 40cm with the spacing of metallic plate, applies one 22.5 kilovolts of high-tension electricity, make to pass through between spinning syringe needle and metallic plate
Pipeline reaches the polymer solution spinning syringe needle from micro syringe, sprays ultra-fine polymer fibre with the flow of 3ml/h, surpasses
Thin polymer fiber drops on the nonwoven substrate of metal sheet surface, and the ultra-fine polymer collected on nonwoven substrate is fine
Dimension, obtains nano fibrous membrane and filters layer material；
(4) nonwoven substrate having loaded nano fibrous membrane filtration layer material is taken off from metallic plate, by another layer
Surface density is 50g/m2Spunbond polypropylene (pp) non-weaving cloth be covered in the above-mentioned nano fibrous membrane that loaded and filter layer material
On nonwoven substrate, using ultrasonic wave compounding machine, 3-layer composite material welding is obtained composite air filtering film, described is super
Sound wave compounding machine is Changzhou Jing Pu automation equipment Co., Ltd jp-60s type ultrasonic wave compounding machine, described ultrasonic wave work frequency
Rate is 20khz, and welding pressure is 200 newton.
Embodiment 8
(1) surface density is 85g/m2Spun lacing terylene/polypropylene (pet/pp) nonwoven substrate be laid in inside and connect
On the metallic plate on ground；
(2) nano fibrous membrane polymer poly ether sulfone (pes) is dissolved in n, n- dimethylformamide (dmf) or dimethyl second
In the solvent that any one in acid amides (dmac) is 8.5:1.5 with acetone (ac) mixed proportion, obtain polymer solution, polymer
The mass percent concentration of solution is 18wt%；
(3) above-mentioned polymer solution is added in micro syringe, controls ambient humidity to be 30%, make micro syringe
It is connected by pipeline with spinning syringe needle, make spinning syringe needle be placed in the top that above-mentioned tiling has the metallic plate of non-weaving cloth, spinning pin
Head is 10cm with the spacing of metallic plate, applies one 15 kilovolts of high-tension electricity, make by pipe between spinning syringe needle and metallic plate
Road reaches the polymer solution spinning syringe needle from micro syringe, sprays ultra-fine polymer fibre with the flow of 0.5ml/h, surpasses
Thin polymer fiber drops on the nonwoven substrate of metal sheet surface, and the ultra-fine polymer collected on nonwoven substrate is fine
Dimension, obtains nano fibrous membrane and filters layer material；
(4) nonwoven substrate having loaded nano fibrous membrane filtration layer material is taken off from metallic plate, by another layer
Surface density is 50g/m2Spunbond polypropylene (pp) non-weaving cloth be covered in the above-mentioned nano fibrous membrane that loaded and filter layer material
On nonwoven substrate, using ultrasonic wave compounding machine, 3-layer composite material welding is obtained composite air filtering film, described is super
Sound wave compounding machine is Changzhou Jing Pu automation equipment Co., Ltd jp-60s type ultrasonic wave compounding machine, described ultrasonic wave work frequency
Rate is 20khz, and welding pressure is 100 newton.
Embodiment 9
(1) surface density is 85g/m2Spun lacing terylene/polypropylene (pet/pp) nonwoven substrate be laid in inside and connect
On the metallic plate on ground；
(2) nano fibrous membrane polymer polyurethane (pu) is dissolved in n, n- dimethylformamide (dmf) and oxolane
(thf) mixed proportion is in the solvent of 1:1, obtains polymer solution, the mass percent concentration of polymer solution is 10wt%；
(3) above-mentioned polymer solution is added in micro syringe, controls ambient humidity to be 30%, make micro syringe
It is connected by pipeline with spinning syringe needle, make spinning syringe needle be placed in the top that above-mentioned tiling has the metallic plate of non-weaving cloth, spinning pin
Head is 20cm with the spacing of metallic plate, applies one 20 kilovolts of high-tension electricity, make by pipe between spinning syringe needle and metallic plate
Road reaches the polymer solution spinning syringe needle from micro syringe, sprays ultra-fine polymer fibre with the flow of 0.9ml/h, surpasses
Thin polymer fiber drops on the nonwoven substrate of metal sheet surface, and the ultra-fine polymer collected on nonwoven substrate is fine
Dimension, obtains nano fibrous membrane and filters layer material；
(4) nonwoven substrate having loaded nano fibrous membrane filtration layer material is taken off from metallic plate, by another layer
Surface density is 50g/m2Spunbond polypropylene (pp) non-weaving cloth be covered in the above-mentioned nano fibrous membrane that loaded and filter layer material
On nonwoven substrate, using ultrasonic wave compounding machine, 3-layer composite material welding is obtained composite air filtering film, described is super
Sound wave compounding machine is Changzhou Jing Pu automation equipment Co., Ltd jp-60s type ultrasonic wave compounding machine, described ultrasonic wave work frequency
Rate is 20khz, and welding pressure is 100 newton.
Embodiment 10
(1) surface density is 85g/m2Spun lacing terylene/polypropylene (pet/pp) nonwoven substrate be laid in inside and connect
On the metallic plate on ground；
(2) nano fibrous membrane polymer poly carbonic ether (pc) being dissolved in CTAB mass fraction is
In the chloroform of 0.5wt%, obtain polymer solution, the mass percent concentration of polymer solution is 14wt%；
(3) above-mentioned polymer solution is added in micro syringe, controls ambient humidity to be 30%, make micro syringe
It is connected by pipeline with spinning syringe needle, make spinning syringe needle be placed in the top that above-mentioned tiling has the metallic plate of non-weaving cloth, spinning pin
Head is 10cm with the spacing of metallic plate, applies one 20 kilovolts of high-tension electricity, make by pipe between spinning syringe needle and metallic plate
Road reaches the polymer solution spinning syringe needle from micro syringe, sprays ultra-fine polymer fibre with the flow of 1.5ml/h, surpasses
Thin polymer fiber drops on the nonwoven substrate of metal sheet surface, and the ultra-fine polymer collected on nonwoven substrate is fine
Dimension, obtains nano fibrous membrane and filters layer material；
(4) nonwoven substrate having loaded nano fibrous membrane filtration layer material is taken off from metallic plate, by another layer
Surface density is 50g/m2Spunbond polypropylene (pp) non-weaving cloth be covered in the above-mentioned nano fibrous membrane that loaded and filter layer material
On nonwoven substrate, using ultrasonic wave compounding machine, 3-layer composite material welding is obtained composite air filtering film, described is super
Sound wave compounding machine is Changzhou Jing Pu automation equipment Co., Ltd jp-60s type ultrasonic wave compounding machine, described ultrasonic wave work frequency
Rate is 20khz, and welding pressure is 100 newton.
Embodiment 11
(1) surface density is 85g/m2Spun lacing terylene/polypropylene (pet/pp) nonwoven substrate be laid in inside and connect
On the metallic plate on ground；
(2) nano fibrous membrane polymers polystyrene (ps) is dissolved in n, n- dimethylformamide, obtains polymer
Solution, the mass percent concentration of polymer solution is 20wt%；
(3) above-mentioned polymer solution is added in micro syringe, controls ambient humidity to be 30%, make micro syringe
It is connected by pipeline with spinning syringe needle, make spinning syringe needle be placed in the top that above-mentioned tiling has the metallic plate of non-weaving cloth, spinning pin
Head is 15cm with the spacing of metallic plate, applies one 15 kilovolts of high-tension electricity, make by pipe between spinning syringe needle and metallic plate
Road reaches the polymer solution spinning syringe needle from micro syringe, sprays ultra-fine polymer fibre with the flow of 2ml/h, ultra-fine
Polymer fiber drops on the nonwoven substrate of metal sheet surface, and the ultra-fine polymer collected on nonwoven substrate is fine
Dimension, obtains nano fibrous membrane and filters layer material；
(4) nonwoven substrate having loaded nano fibrous membrane filtration layer material is taken off from metallic plate, by another layer
Surface density is 50g/m2Spunbond polypropylene (pp) non-weaving cloth be covered in the above-mentioned nano fibrous membrane that loaded and filter layer material
On nonwoven substrate, using ultrasonic wave compounding machine, 3-layer composite material welding is obtained composite air filtering film, described is super
Sound wave compounding machine is Changzhou Jing Pu automation equipment Co., Ltd jp-60s type ultrasonic wave compounding machine, described ultrasonic wave work frequency
Rate is 20khz, and welding pressure is 100 newton.
Claims (1)
1. a kind of preparation method of composite air filtering film is it is characterised in that this preparation method comprises the following steps:
(1) nonwoven substrate is laid on the metallic plate of inner ground, described nonwoven substrate is spun lacing terylene/poly-
Propylene, or described nonwoven substrate is PLA, the surface density of described non-weaving cloth is 40～85g/；
(2) nanofiber membrane polymer is dissolved in solvent, obtains polymer solution, the mass percent of polymer solution is dense
Spend for 10～20wt%, described nanofiber membrane polymer is nylon, polyacrylonitrile, polysulfones, Kynoar or polyether sulfone,
Any one of polyurethane, Merlon, polystyrene, solvent be formic acid, acetic acid, chloroform, n, n- dimethylformamide, two
One of methylacetamide, acetone, oxolane, CTAB or two kinds are mixed with certain proportion
Close, the mixed proportion of described solvent is 1:1～1:199；
(3) above-mentioned polymer solution is added in micro syringe, controls ambient humidity to be 30～60%, make micro syringe
It is connected by pipeline with spinning syringe needle, make spinning syringe needle be placed in the top that above-mentioned tiling has the metallic plate of non-weaving cloth, spinning pin
Head is 10～40cm with the spacing of metallic plate, applies one 12～33 kilovolts of high-tension electricity between spinning syringe needle and metallic plate,
Make to reach the polymer solution spinning syringe needle from micro syringe by pipeline, sprayed with the flow of 0.1～4ml/h ultra-fine poly-
Compound fiber, ultra-fine polymer fibre drops on the nonwoven substrate of metal sheet surface, collects on nonwoven substrate
Ultra-fine polymer fibre, obtains nano fibrous membrane and filters layer material；
(4) nonwoven substrate having loaded nano fibrous membrane filtration layer material is taken off from metallic plate, upper strata is non-woven
Cloth is covered in the above-mentioned nano fibrous membrane that loaded and filters on the nonwoven substrate of layer material, using ultrasonic wave complex method, will
3-layer composite material is welded into composite air filtering film, and the ultrasonic frequency of ultrasonic wave compound tense is 20khz, and welding pressure is 50
～200 newton, upper strata nonwoven substrate is acupuncture terylene, or upper strata nonwoven substrate is spun lacing terylene/polypropylene, or on
Layer nonwoven substrate is spunbond polypropylene, and the surface density of upper strata non-weaving cloth is 50～85g/.
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| CN105195028A (en) * | 2015-07-03 | 2015-12-30 | 东华大学 | Preparation method of composite nanofiber ultra-filtration membrane |
| CN105080355A (en) * | 2015-07-06 | 2015-11-25 | 南通百博丝纳米科技有限公司 | Nano fiber composite film and preparation method |
| CN106079759B (en) * | 2016-06-24 | 2018-10-26 | 崔建中 | Polyphenylene sulfide nanofiltration net and its Preparation equipment |
| CN106063600A (en) * | 2016-07-26 | 2016-11-02 | 苏州艾美医疗用品有限公司 | A kind of medical filtration type protective mask |
| CN105996230A (en) * | 2016-07-26 | 2016-10-12 | 苏州艾美医疗用品有限公司 | Super-high-moisture-absorption-and-filtration medical protective mask |
| CN106731328A (en) * | 2016-11-25 | 2017-05-31 | 浙江绿净环保科技有限公司 | A kind of two-layer compound air-filtering membrane and its preparation technology |
| CN106582124A (en) * | 2016-11-25 | 2017-04-26 | 浙江绿净环保科技有限公司 | Production process for dedusting filter bag |
| DE102016014894A1 (en) | 2016-12-15 | 2018-06-21 | Mann + Hummel Gmbh | Filter medium, process for its preparation and use of the filter medium in a filter element |
| CN108434898A (en) * | 2017-07-22 | 2018-08-24 | 浙江龙碧新材料有限公司 | A kind of nano-energy-saving filter and its manufacture craft |
| KR20210104882A (en) * | 2018-12-28 | 2021-08-25 | 닛토덴코 가부시키가이샤 | Filter Fleet Pack and Air Filter Unit |
| CN110126377A (en) * | 2019-05-24 | 2019-08-16 | 多凌洁净空气科技有限公司 | Absorbing sweat hydrofuge is ventilative and may filter that composite material, its preparation method and the application of particulate matter |
| CN111746076A (en) * | 2020-06-02 | 2020-10-09 | 张逸晖 | Filtering fabric, mask and production method of mask |
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| JP5209165B2 (en) * | 2000-03-22 | 2013-06-12 | ビクトレックス マニュファクチャリング リミテッド | Composite ion exchange material |
| CN101829454A (en) * | 2009-03-12 | 2010-09-15 | 北京服装学院 | Preparation method of electric spinning-based composite nano fiber material for filters |
| CN103111195A (en) * | 2013-03-13 | 2013-05-22 | 株洲时代新材料科技股份有限公司 | High-temperature resistance polyamide composite membrane and preparation method thereof |
| CN103480285B (en) * | 2013-09-06 | 2015-10-21 | 东华大学 | A kind of enhancing polysulfone nano-fiber air filter membrane and electrostatic spinning preparation method thereof |
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