CN108097066A - A kind of efficient low-resistance antibacterial of sandwich style removes the preparation method of formaldehyde composite Nano filtering material - Google Patents
A kind of efficient low-resistance antibacterial of sandwich style removes the preparation method of formaldehyde composite Nano filtering material Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/06—Organic material
- B01D71/30—Polyalkenyl halides
- B01D71/32—Polyalkenyl halides containing fluorine atoms
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- B01D46/0001—Making filtering elements
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0027—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
- B01D46/0028—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions provided with antibacterial or antifungal means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/54—Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms
- B01D46/543—Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms using membranes
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/54—Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms
- B01D46/546—Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms using nano- or microfibres
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
- B01D67/0079—Manufacture of membranes comprising organic and inorganic components
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/02—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor characterised by their properties
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/12—Composite membranes; Ultra-thin membranes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/02—Inorganic material
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/06—Organic material
- B01D71/38—Polyalkenylalcohols; Polyalkenylesters; Polyalkenylethers; Polyalkenylaldehydes; Polyalkenylketones; Polyalkenylacetals; Polyalkenylketals
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/06—Organic material
- B01D71/54—Polyureas; Polyurethanes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
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Abstract
The present invention discloses a kind of preparation method of the efficient low-resistance antibacterial except formaldehyde composite Nano filtering material of sandwich style, comprises the following steps, preparation of nano bind particles solution；Coated nanoparticles；Prepare spinning solution；Electrostatic spinning forms layers of nanofibers；The attached last layer coating in layers of nanofibers forms the stereo multi-dimensinal sandwich structure that the supporting layer containing nano-particle, layers of nanofibers and coating are formed.Design technology of the present invention is simple, have many advantages, such as to PM2.5 filtration efficiencies and low-drag, pressure drop is small, dedusting, overcomes the problem of conventional air scavenging material poorly efficient high resistant, can make a variety of harmful substances sedimentations such as harmful PM2.5 in the interior space or Newly decorated rooms, formaldehyde in a short time；There is excellent anti-microbial property and except formaldehyde performance simultaneously.
Description
Technical field
The present invention relates to Material Field, more particularly, to a kind of sandwich style efficient low-resistance antibacterial except formaldehyde it is compound
The preparation method of nanofiltration material.
Background technology
Common air filting material generally all depends only on mechanical stop effect, i.e., is sunk by inertial deposition, gravity
The mechanism such as product, diffusion effect carry out interception function, to reach filtering purpose to flowing dust in gas.
Filtering material prepared by method of electrostatic spinning is due to, large specific surface area ultra-fine with fiber, and porosity is high, as air
Filtering material has efficient in-depth filtration performance, low-drag and good processing performance, it is considered to be presently the most
The preparation method of preferable filtering material.The electret with consistent electric field is formed especially by certain physico-chemical process
Afterwards, efficiency can improve 30%~40%.However, the problem of due to technology, Electrospun nano-fibers filtering material is producing
The uniformity of product and the stability of electret bulk electric field etc. can't reach practical requirement, the single varieties of filtering material,
Its application is still restricted.
Conventional air filter material is made of micron order even millimetre-sized fiber, and fibre number is big, and filter efficiency is low, is needed
It wants the techniques such as electret that could increase its strainability, is not suitable for the filtering of the particles such as similar PM2.5, and it produces grammes per square metre
It is the 2 times or more of nanofiber, energy consumption is high.The material selectivity produced at present is single, is main material generally by PP.Institute
With, in the filtering material of air purification, using electrostatic spinning process prepare nanofiber, be that novel filter material develops
Trend.Electrostatic spinning is the technology that uniquely can continuously and largely prepare nanofiber now.Its nanofiber prepared has
The features such as fiber number is small, large specific surface area and draw ratio are big, by the nano fibrous membrane of its structure with nano level micropore and mutually
The porous channel of perforation.Therefore, high porosity and good air permeability are possessed, material is alternative big, and technology has become
Dominant technology in high-efficiency air filtering developing material of new generation, application prospect are inestimable.
But because nanofiltration material prepared by method of electrostatic spinning cannot be met the requirements in mechanical property, and add drop
The nano-particle of solution formaldehyde can make increase prepare the big difficulty of fibre technology, be subject to certain restrictions its application.
The content of the invention
It is a primary object of the present invention to provide a kind of efficient low-resistance antibacterial of sandwich style except formaldehyde composite Nano filters
The preparation method of material, comprises the following steps：
S1, preparation of nano bind particles solution：Adhesive is weighed, water is added to dissolve by heating and is stirred into adhesive solution, is weighed
Nano-particle adds water ultrasonic dissolution to form nano-particle solution, then adhesive solution and nano-particle solution are mixed evenly,
Obtain nano-particle adhesive solution；
S2, coated nanoparticles：The nano-particle adhesive solution that step S1 is obtained, is coated uniformly on support layer material surface,
Form one layer of film containing uniform nanoparticles；
S3, spinning solution is prepared：High molecular polymer solubilizer is stirred by ultrasonic to high molecular polymer and is completely dissolved, is configured to spin
Silk liquid；
S4, electrostatic spinning：The step S3 spinning solutions prepared are poured into syringe, deaeration carries out electrostatic spinning afterwards completely, will spin
Silk liquid is weaved by way of electrostatic spinning on the film of step S2, forms layers of nanofibers；
After drying, attached last layer coating, forms the support containing nano-particle in layers of nanofibers for S5, layers of nanofibers
The stereo multi-dimensinal sandwich structure that layer, layers of nanofibers and coating are formed.
Further, in step S1, adhesive is weighed as 5 ~ 20g, 100g is added water to and dissolves by heating and stir evenly bonding
Solution weighs 3 ~ 10g nano-particles and water ultrasonic dissolution is added to form nano-particle solution, then by adhesive solution and nano-particle solution
It is mixed evenly, obtains the nano-particle adhesive solution that nano-particle mass fraction is 3 ~ 10wt%.
Further, in step S4, spinneret flow velocity is controlled during electrostatic spinning as 1-3 ml/h, the electricity of electrostatic spinning
It presses as 15-36 kV, spinning spacing is 10-20cm, and air flow rate is 7-9 L/min, and nozzle lateral displacement speed is 100-
400mm/s prepares the layers of nanofibers.
Further, described adhesive is polyethylene glycol or epoxy resin.
Further, in step S2, by the nano-particle adhesive solution, using smearing or the method for spraying, uniformly
Coated in support layer material surface, one layer of film containing uniform nanoparticles is formed.
Further, in the step S2, received while coated nanoparticles using the method quickening of tengsten lamp heating
Rice grain film cures or naturally dry air-dry rear for use.
Further, the supporting layer, coating can be pin thorn or melt spraying non-woven fabrics.The addition of supporting layer and coating is not
The mechanical property of the nanofiltration material prepared by method of electrostatic spinning is only enhanced, also increases its strainability, greatly improves
Filter efficiency.
Further, in step S3, the spinning solution is settled to 100g by the high molecular polymer of 7 ~ 18g with solvent, surpasses
Sound is stirred to the high molecular polymer and is completely dissolved, the spinning solution for the 7 ~ 18wt% of mass fraction being configured to.
Further, the high molecular polymer includes polylactic acid（PLA）, polyurethane and its polymer-modified（PA6、
PA11）, polymethyl methacrylate（PMMA）, polyethylene terephthalate（PET）Or Kynoar（PVDF）；It is described
Solvent includes acetic acid, N,N-dimethylformamide, DMAC N,N' dimethyl acetamide, dichloroethanes, chloroform, acetone, butanone, isopropyl
Alcohol, water or its mixed solvent.
Further, in step S5, the drying is to be dried using tungsten lamp or infrared heating.
The present invention has the following advantages：
A kind of preparation method of present invention offer is simple, energy consumption is low and the composite fibre filter membrane of easy batch production (industrialization), melts
Spraying and eedle-punched non-wovens are typically all micron-sized structure, and the core layer of the present invention is nano-scale fiber prepared by electrostatic spinning,
With big specific surface area, it is easier to intercept small particle；The composite fibre filter membrane design technology is simple, eliminates fusion spray cloth
The technique for needing electrostatic electret with non-woven fabrics such as eedle-punched non-wovens；With to PM2.5 filtration efficiencies and low-drag, pressure drop it is small,
Dedusting overcomes the problem of conventional air scavenging material poorly efficient high resistant, can occupy the interior space or new finishing in a short time
The advantages that a variety of harmful substances such as indoor harmful PM2.5, formaldehyde settle；Simultaneously have excellent anti-microbial property and
Except formaldehyde performance.Using this composite fibre filter membrane as the leading filter layer in air filter unit, make the mask or sky of making
Gas filter plant, removes air PM2.5 and formaldehyde is efficient, protects people from PM2.5 pollutions and formaldehyde poisoning, effectively carries
High human habitat quality.
Description of the drawings
Fig. 1 is to remove the preparation of formaldehyde composite Nano filtering material using the efficient low-resistance antibacterial of sandwich style in embodiment 1
Stereo multi-dimensinal sandwich style composite structure schematic diagram made of method；
Fig. 2 is Degradation Formaldehyde experimental provision schematic diagram；
Fig. 3 is the test result of composite Nano filtering material, acupuncture filter material and melt-blown filter materials in embodiment 1；
Fig. 4 is the test result of composite Nano filtering material, acupuncture filter material and melt-blown filter materials in embodiment 2；
Fig. 5 loads polylactic acid for embodiment 2（PLA）The composite fibre filter membrane PET melt spraying non-woven fabrics of Electrospun nano-fibers
Scheme as basal layer SEM；
Fig. 6 is the SEM figures of the nano-particle of photocatalytic degradation.
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
Presently preferred embodiments of the present invention is described in detail below in conjunction with the accompanying drawings so that advantages and features of the invention be more easy to by
It will be appreciated by those skilled in the art that so as to make apparent define to protection scope of the present invention.
Embodiment 1
（1）Preparation of nano bind particles solution：Weigh 5g polyethylene glycol, add water to 100g dissolve by heating and stir evenly bonding it is molten
Liquid will weigh 3g nano-titania particles and a small amount of water ultrasonic dissolution added to form nano-particle solution, then by adhesive solution and receives
Rice corpuscles solution is mixed evenly, and obtains the nano-particle adhesive solution that nano-particle mass fraction is 3wt%；
（2）Spray nano-particle：It will（1）The obtained Japanese Mingzhi's A-100 spray guns of nano-particle adhesive solution（Bore 0.5-
2.0mm, operating pressure 5Mpa, 110 DEG C of operating temperature）It is sprayed on PET melt spraying non-woven fabrics backing material surfaces or is sprayed with spray canister
It applies repeatedly, forms uniform film, and be dried for standby under tengsten lamp；
（3）Prepare spinning solution：Weigh the Kynoar of 14g（PVDF）Particle uses n,N-Dimethylformamide（DMF）And acetone
Mixed solvent (volume ratio V/V=1:1）100g is settled in conical flask；Heating stirring is placed in 60 DEG C of water-baths to completely molten
Solution is configured to the PVDF solution that mass concentration is 14wt%.
（4）Electrostatic spinning process：
By step（3）The spinning solution of preparation is poured into syringe, and deaeration carries out electrostatic spinning afterwards completely.Spinning solution is passed through into electrostatic
The mode of spinning is weaved in step（2）On obtained film, electrospinning parameters are set：Spinneret flow velocity be 2ml/h, spinning spacing
For 15cm, the voltage of electrostatic spinning is 30kV, air flow rate 8L/min, and nozzle lateral displacement speed is 250mm/s, environmental wet
It spends for 60%, temperature is 25 DEG C, prepares layers of nanofibers（Interlayer）, most afterwards after tungsten lamp or infrared heating drying, in centre
The top of layer, attached last layer coating（Protective layer）, form by the basal layer containing nano-particle, layers of nanofibers, coating
The sandwich structure of composition.
Salt particle filtration efficiency：By the use of 2%NaCl as aerosol, its filter efficiency is tested with TSI8130 equipment；
Oily particle filter efficiency：Its oiliness filter efficiency is detected with 0.28 ~ 0.34mm paraffin oils with BigDipper mist of oil instrument；
Antibacterial experiment：According to《The evaluation method of AATCC 100-2012 antibacterial fabrics》, experimental strain is using golden yellow Portugal
Grape coccus（ATCC 6538）；
Except formaldehyde efficiency：Experiment is measured the concentration of formaldehyde of air in system using ZY10-CH2O methylene oxide detecting instruments.Nanometer
The design of photocatalysis functional air filtrate formaldehyde degradation by photocatalytic oxidation process test dynamic experiment platform has references to actual air-conditioning system, simulates
The ventilating system of air-conditioned room, this experimental bench are equipped with air-supply, return air and exhaust system, during test air by fillter section in system
Interior continuous cycling.There to be pernicious gas source (such as formalin) to be put into babinet, and first formalin be allowed to volatilize, then made by wind turbine
A cabins room air constantly cycles, so that the uniform reading of concentration of formaldehyde in the room air of A cabins, opens ultraviolet lamp, contain formaldehyde
Air-flow start universal test filtering material and enter B cabins and reading, structure diagram as shown in Fig. 2, formaldehyde removing rate such as
Under：
As what is compareed it is that commercially available electret eedle-punched non-wovens and fusion spray cloth, result of the test are as shown in Figure 3 with it：
According to Fig. 3, composite filter material prepared by the present invention salt particle filtration efficiency, oily particle filter efficiency, pressure drop,
Anti-microbial property and Degradation Formaldehyde rate are superior to commercially available electret eedle-punched non-wovens and fusion spray cloth.
The filtering material formed with the composite filter material（Strainer）, there is the mistake that 99.9% is up to PM2.5 in air
Efficiency is filtered, and resistance pressure drop is low under the test flow velocity of 32L/min.Composite fibre filter membrane preparation is simple, low energy consumption, has
The advantages of high low with air drag pressure drop, the washable, pyroelectricity of filter efficiency is reused, is a kind of small of preferable air
Grain object（Pollutant）Filtration, purification material can be applied to make the air filter units such as air purifier.
Embodiment 2
（1）Preparation of nano bind particles solution：Weigh 5g polyethylene glycol, add water to 100g dissolve by heating and stir evenly bonding it is molten
Liquid will weigh 3g nano-titania particles and a small amount of water ultrasonic dissolution added to form nano-particle solution, then by adhesive solution and receives
Rice corpuscles solution is mixed evenly, and obtains the nano-particle adhesive solution that nano-particle mass fraction is 3wt%；
（2）Spray nano-particle：It will（1）The obtained Japanese Mingzhi's A-100 spray guns of nano-particle adhesive solution（Bore 0.5-
2.0mm, operating pressure 5Mpa, 110 DEG C of operating temperature）It is sprayed on PET melt spraying non-woven fabrics backing material surfaces or is sprayed with spray canister
It applies repeatedly, forms uniform film, and be dried for standby under tengsten lamp；
（3）Prepare spinning solution：Weigh the polylactic acid of 14g（PLA）Particle is settled to 100g with chloroform in conical flask；It is placed in super
Ultrasound is configured to the PLA spinning solutions that mass concentration is 14wt% to being completely dissolved in sound instrument.
（4）Electrostatic spinning process：
By step（3）The spinning solution of preparation is poured into syringe, and deaeration carries out electrostatic spinning afterwards completely.Spinning solution is passed through into electrostatic
The mode of spinning is weaved in step（2）On obtained film, by setting electrospinning parameters：Spinneret flow velocity be 3ml/h, spinning
Spacing is 10cm, and the voltage of electrostatic spinning is 20kV, air flow rate 8L/min, and nozzle lateral displacement speed is 330mm/s, ring
Border humidity is 50%, and temperature is 25 DEG C, prepares layers of nanofibers（Interlayer）, most afterwards after tungsten lamp or infrared heating drying,
The top in interlayer, attached last layer coating（Protective layer）, form by the basal layer containing nano-particle, layers of nanofibers, cover
The sandwich structure that cap rock is formed.
With embodiment 1, the salt particle filtration efficiency of test compound nanofiltration material, oily particle filter efficiency, pressure
Drop, anti-microbial property and Degradation Formaldehyde rate；
As what is compareed it is that commercially available electret eedle-punched non-wovens and fusion spray cloth, result of the test are as shown in Figure 4 with it：
According to Fig. 4, composite Nano filtering material prepared by the present invention salt particle filtration efficiency, oily particle filter efficiency,
Pressure drop, anti-microbial property and Degradation Formaldehyde rate are superior to commercially available electret eedle-punched non-wovens and fusion spray cloth.
The present invention in fusion spray cloth/pin by piercing filter cloth（Supporting layer）Surface, the very thin nano particle of spraying last layer, then
Above this layer, using electrospinning process, three-dimensional multilayer composite fiber filter membrane is prepared（Interlayer）, one is finally covered again
Layer fusion spray cloth（Protective layer）, form the NEW TYPE OF COMPOSITE filter membrane material of sandwiched type structure, the filtering material made of the filter membrane
（Strainer）, there is the filter efficiency that 99.9% is up to PM2.5 in air, and the resistance pressure under the test flow velocity of 32L/min
It reduces.Composite fibre filter membrane preparation is simple, low energy consumption, has filter efficiency height is low with air drag pressure drop, washable, hot to release
The advantages of electricity is reused, is a kind of preferable air finely ground particles（Pollutant）Filtration, purification material can be applied to make
The air filter units such as air purifier.
It these are only the preferred embodiment of the present invention, be not intended to limit the scope of the invention, it is every to utilize this hair
The equivalent structure or equivalent flow shift that bright specification and accompanying drawing content are made directly or indirectly is used in other relevant skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of efficient low-resistance antibacterial of sandwich style removes the preparation method of formaldehyde composite Nano filtering material, it is characterised in that：
Comprise the following steps,
S1, preparation of nano bind particles solution：Adhesive is weighed, water is added to dissolve by heating and is stirred into adhesive solution, is weighed
Nano-particle adds water ultrasonic dissolution to form nano-particle solution, then adhesive solution and nano-particle solution are mixed evenly,
Obtain nano-particle adhesive solution；
S2, coated nanoparticles：The nano-particle adhesive solution that step S1 is obtained, is coated uniformly on support layer material surface,
Form one layer of film containing uniform nanoparticles；
S3, spinning solution is prepared：High molecular polymer solubilizer is stirred by ultrasonic to high molecular polymer and is completely dissolved, is configured to spin
Silk liquid；
S4, electrostatic spinning：The step S3 spinning solutions prepared are poured into syringe, deaeration carries out electrostatic spinning afterwards completely, will spin
Silk liquid is weaved by way of electrostatic spinning on the film of step S2, forms layers of nanofibers；
After drying, attached last layer coating, forms the support containing nano-particle in layers of nanofibers for S5, layers of nanofibers
The stereo multi-dimensinal sandwich structure that layer, layers of nanofibers and coating are formed.
2. a kind of efficient low-resistance antibacterial of sandwich style according to claim 1 is except formaldehyde composite Nano filtering material
Preparation method, it is characterised in that：In step S1, adhesive is weighed as 5 ~ 20g, 100g is added water to and dissolves by heating and stir evenly
Adhesive solution weighs 3 ~ 10g nano-particles and water ultrasonic dissolution is added to form nano-particle solution, then by adhesive solution and nano-particle
Solution is mixed evenly, and obtains the nano-particle adhesive solution that nano-particle mass fraction is 3 ~ 10wt%.
3. a kind of efficient low-resistance antibacterial of sandwich style according to claim 1 is except formaldehyde composite Nano filtering material
Preparation method, it is characterised in that：In step S4, spinneret flow velocity is controlled during electrostatic spinning as 1-3 ml/h, electrostatic spinning
Voltage for 15-36 kV, spinning spacing is 10-20cm, and air flow rate is 7-9 L/min, and nozzle lateral displacement speed is 100-
400mm/s prepares the layers of nanofibers.
4. a kind of efficient low-resistance antibacterial of sandwich style according to claim 2 removes the system of formaldehyde composite Nano filtering material
Preparation Method, it is characterised in that：Described adhesive is polyethylene glycol or epoxy resin.
5. a kind of efficient low-resistance antibacterial of sandwich style according to claim 1 removes the system of formaldehyde composite Nano filtering material
Preparation Method, it is characterised in that：In step S2, by the nano-particle adhesive solution, using smearing or the method for spraying, uniformly
Coated in support layer material surface, one layer of film containing uniform nanoparticles is formed.
6. a kind of efficient low-resistance antibacterial of sandwich style according to claim 5 removes the system of formaldehyde composite Nano filtering material
Preparation Method, it is characterised in that：In the step S2, received while coated nanoparticles using the method quickening of tengsten lamp heating
Rice grain film cures or naturally dry air-dry rear for use.
7. a kind of efficient low-resistance antibacterial of sandwich style according to claim 1 removes the system of formaldehyde composite Nano filtering material
Preparation Method, it is characterised in that：The supporting layer, coating can be pin thorn or melt spraying non-woven fabrics.
8. a kind of efficient low-resistance antibacterial of sandwich style according to claim 1 removes the system of formaldehyde composite Nano filtering material
Preparation Method, it is characterised in that：In step S3, the spinning solution is settled to 100g by the high molecular polymer of 7 ~ 18g with solvent, surpasses
Sound is stirred to the high molecular polymer and is completely dissolved, the spinning solution for the 7 ~ 18wt% of mass fraction being configured to.
9. a kind of efficient low-resistance antibacterial of sandwich style according to claim 8 removes the system of formaldehyde composite Nano filtering material
Preparation Method, it is characterised in that：The high molecular polymer includes polylactic acid, polyurethane and its polymer-modified, polymethyl
Sour methyl esters, polyethylene terephthalate or Kynoar；The solvent includes acetic acid, N,N-dimethylformamide, N,
N- dimethyl acetamides, dichloroethanes, chloroform, acetone, butanone, isopropanol, water or its mixed solvent.
10. a kind of efficient low-resistance antibacterial of sandwich style according to claim 1 is except formaldehyde composite Nano filtering material
Preparation method, it is characterised in that：In step S5, the drying is to be dried using tungsten lamp or infrared heating.
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| CN109361325A (en) * | 2018-09-10 | 2019-02-19 | 中原工学院 | A kind of high-performance wave mode electret nano friction generator and preparation method thereof |
| CN111330355A (en) * | 2020-02-28 | 2020-06-26 | 厦门理工学院 | Electret nanofiber high-efficiency filter material and preparation method thereof |
| CN111545074A (en) * | 2020-05-18 | 2020-08-18 | 上海格瑞菲英科技有限公司 | Fluid separation membrane and manufacturing method and application thereof |
| CN111841133A (en) * | 2019-04-30 | 2020-10-30 | 科劲市场管理有限公司 | Fluid filter for treating a fluid, container comprising a fluid filter and an air release device |
| CN112370866A (en) * | 2020-10-28 | 2021-02-19 | 美埃(南京)纳米材料有限公司 | Degradable antibacterial nanofiber non-woven fabric composite filter material and preparation method thereof |
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