CN106149206A - A kind of preparation method of nanofiber acupuncture PTFE base fabric filter material - Google Patents
A kind of preparation method of nanofiber acupuncture PTFE base fabric filter material Download PDFInfo
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- CN106149206A CN106149206A CN201610687918.7A CN201610687918A CN106149206A CN 106149206 A CN106149206 A CN 106149206A CN 201610687918 A CN201610687918 A CN 201610687918A CN 106149206 A CN106149206 A CN 106149206A
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- base fabric
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- acupuncture
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H13/00—Other non-woven fabrics
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/0007—Electro-spinning
- D01D5/0015—Electro-spinning characterised by the initial state of the material
- D01D5/003—Electro-spinning characterised by the initial state of the material the material being a polymer solution or dispersion
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/0007—Electro-spinning
- D01D5/0061—Electro-spinning characterised by the electro-spinning apparatus
- D01D5/0076—Electro-spinning characterised by the electro-spinning apparatus characterised by the collecting device, e.g. drum, wheel, endless belt, plate or grid
- D01D5/0084—Coating by electro-spinning, i.e. the electro-spun fibres are not removed from the collecting device but remain integral with it, e.g. coating of prostheses
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/44—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds
- D01F6/48—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds of polymers of halogenated hydrocarbons
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
- D06M11/36—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
- D06M11/46—Oxides or hydroxides of elements of Groups 4 or 14 of the Periodic System; Titanates; Zirconates; Stannates; Plumbates
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/73—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with carbon or compounds thereof
- D06M11/74—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with carbon or compounds thereof with carbon or graphite; with carbides; with graphitic acids or their salts
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/347—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated ethers, acetals, hemiacetals, ketones or aldehydes
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/18—Synthetic fibres consisting of macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/22—Polymers or copolymers of halogenated mono-olefins
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
Abstract
The present invention relates to the preparation method of a kind of nanofiber acupuncture PTFE base fabric filter material, belong to electrostatic spinning technique field, comprise the following steps: step one, PTFE base fabric pre-treatment；Step 2, electrostatic spinning；Step 3, the preparation of superfine nano fiber dispersion；Step 4, composite filtering material immersion treatment.In this technical scheme, PTFE base fabric uses PTFE fiber and PPS fiber to mix, more traditional glass mat pliability is more preferable, filter material spinnability, wearability are all greatly improved, effects in 8 months of the glass fibre felt that service life is more common rise to 1 year～2 years, wide market.
Description
Technical field
The present invention relates to the preparation method of a kind of nanofiber-acupuncture PTFE base fabric filter material, belong to electrostatic spinning technique neck
Territory.
Background technology
Polytetrafluoroethylene (PTFE) synthetic fibers filter material is one of a kind of material the most high-end in filtering material, it is possible to
The continuous running temperature of 240 DEG C, under the moment temperature conditions of 260 DEG C, the soda acid being resistant in whole pH range corrodes.Polytetrafluoro
Ethylene synthase fiber self-lubricity is splendid, nonhygroscopic, can bear ultraviolet radiation.But the wearability of PTFE fiber filtrate is general, mistake
Filter effect still has much room for improvement.
Static Spinning is a kind of nanofiber technology of preparing utilizing high voltage to carry out spinning, is also a kind of nanofiber simultaneously
A large amount of space charges can be injected in the middle of fiber during spinning by electret technology, space charge easily deep by fibrous inside
Trap captures, and can polarize and produces polarization charge by induced dipole simultaneously, can pass through electrostatic during filtering particle
Adsorption promotes filter efficiency.
Summary of the invention
For solving problems of the prior art, the invention provides a kind of nanofiber-acupuncture PTFE base fabric filter material
Preparation method, concrete technical scheme is as follows:
The preparation method of a kind of nanofiber-acupuncture PTFE base fabric filter material, comprises the following steps: step one, locates before PTFE base fabric
Reason；Step 2, electrostatic spinning；Step 3, the preparation of superfine nano fiber dispersion；Step 4, composite filtering material immersion treatment；
In described step one,
(1) titanium dioxide nanofiber or nanometer activated carbon fiber are added in ethanol, and ultrasonic disperse, disperseed uniformly
Liquid A；
(2) take out after PTFE base fabric being soaked in dispersion liquid A and dry, it is thus achieved that surface deposition of titanium oxide nanofiber or nanometer
The PTFE base fabric base material A of activated carbon fiber；
In described step 2,
(1) inorganic nanoparticles is joined ultrasonic disperse in solvent, obtain uniform dispersion liquid B；
(2) adding polymer in dispersion liquid B, preparation obtains uniform spinning liquid B；
(3) spinning liquid B is carried out Multi needle electrostatic spinning, use PTFE base fabric base material A to be received, be obtain a homogeneously deposited quiet
The composite filtering material B of electric spinning polymer nanofiber；
In described step 3, first prepare polyvinyl butyral solution, then by polyvinyl butyral solution and superfine nano
Fiber adds in blender and disperses, and obtains uniform dispersion liquid C；
In described step 4, composite filtering material B step 2 obtained immerses in the dispersion liquid C that step 3 obtains, and takes out post-drying,
Obtain electrostatic weaving composite filtering material: nanofiber-acupuncture PTFE base fabric filter material.
As the improvement of technique scheme, in (1) of described step one, the titanium dioxide nanofiber in dispersion liquid A
Or the mass fraction of nanometer activated carbon fiber is 0.2%～4%, described titanium dioxide nanofiber or nanometer activated carbon fiber are straight
Footpath is 30nm～80nm, a length of 300nm～600nm.
As the improvement of technique scheme, in (1) of described step 2, inorganic nanoparticles is silicon dioxide, dioxy
Changing titanium, tantalum pentoxide, Barium metatitanate., tourmaline, boehmite or silsesquioxane nano granule, solvent is N, N-dimethyl formyl
Amine.
As the improvement of technique scheme, in (2) of described step 2, described polymer is Kynoar, polyoxy
Change ethylene, polyvinylpyrrolidone, polyacrylonitrile, polycaprolactone, polyurethane, fluorinated polyurethane, polysulfones, polyether sulfone, poly-inclined fluorine
In ethylene-hexafluoropropene, Kynoar-tetrafluoroethylene-perfluoro methyl vinyl ether, Kynoar-CTFE
The mixture of one or more compositions.
As the improvement of technique scheme, in (3) of described step 2, between the syringe needle of Multi needle electrostatic spinning absolutely
Edge, and the surrounding of each syringe needle have insulant formed isolation groove, the degree of depth of groove is 2 times～4 times of needle length.
As the improvement of technique scheme, in (3) of described step 2, the process conditions of Multi needle electrostatic spinning are:
Supply voltage 20KV～50KV, spinning environment condition is temperature 25 DEG C～35 DEG C, relative humidity 25%～80%；Multi needle spray webbing
Unit syringe needle spacing 5cm～30cm, spray webbing unit syringe needle quantity is 20～90.
As the improvement of technique scheme, in described step 3, superfine nano fiber is Kynoar, polyoxyethylene
Alkene, polyvinylpyrrolidone, polyacrylonitrile, polycaprolactone, polyurethane, fluorinated polyurethane, polysulfones, polyether sulfone, Kynoar-
One in hexafluoropropene, Kynoar-tetrafluoroethylene-perfluoro methyl vinyl ether, Kynoar-CTFE or
The mixture of more than one compositions.
As the improvement of technique scheme, in described step 3, in dispersion liquid C, the content of superfine nano fiber is
0.01wt%～4wt%, superfine nano fibre diameter is 10nm～150nm, a length of 100nm～200nm.
As the improvement of technique scheme, in described step 3, the rotating speed of blender is 6000r/min～8000r/
min。
As the improvement of technique scheme, in (2) of described step one, PTFE base fabric uses PTFE fiber and PPS fine
Dimension mixes according to mass ratio 20～50:50～80, through shredding, combing, lapping and needling process, then carries out at immersion
Reason and surface deposition.
Technique scheme has a technique effect of following three aspects:
First, by depositing high-flexibility, superfine nano fiber on the nano fibrous membrane obtained at electrostatic spinning and PTFE base fabric,
To form on main fibre the composite filter material containing " fractal secondary structure ", main body crude fibre is for the bigger granule of particle diameter
There is preferable filter effect, concurrently form passing through of larger aperture structure beneficially air-flow, and two grades of fractal structures pair
There is the strainability of excellence, simultaneously its more soft characteristic in ultra-fine grain so that will not be right when having high velocity air to pass through
Air-flow produces barrier effect, thus is not result in the increase of resistance pressure drop, and the filtering material using the manner to obtain has high
Filtration efficiency；
Second, the present invention, by being attached between PTFE base fabric by the nano fibrous membrane with electret effect, hinders to have and stays
The electrostatic spinning fiber of pole effect directly contacts with external environment, and the electrostatic spinning fiber obtained/PTFE composite for base fabric filtrate has good
Good Charge Storage Stability, thus filter effect maintenance is good, after testing, this filter material to cement industry dust size is
The filter efficiency of the granule of 0.05 μm～15 μm reaches 99.999%；
3rd, PTFE base fabric uses PTFE fiber and PPS fiber to mix, and more traditional glass mat pliability is more preferable,
Filter material spinnability, wearability are all greatly improved, and effects in 8 months of the glass fibre felt that service life is more common promote
By 1 year～2 years, wide market.
Detailed description of the invention
The invention provides the preparation method of a kind of nanofiber-acupuncture PTFE base fabric filter material, comprise the following steps, step
One, PTFE base fabric pre-treatment:
(1) titanium dioxide nanofiber or nanometer activated carbon fiber are added in ethanol, and ultrasonic disperse, disperseed uniformly
Liquid A, titanium dioxide nanofiber or the mass fraction of nanometer activated carbon fiber in dispersion liquid A are 0.2%～4%, described two
TiOx nano fiber or a diameter of 30nm～80nm of nanometer activated carbon fiber, a length of 300nm～600nm；
(2) take out after PTFE base fabric being soaked in dispersion liquid A and dry, it is thus achieved that surface deposition of titanium oxide nanofiber or nanometer
The PTFE base fabric base material A of activated carbon fiber；
Step 2, electrostatic spinning:
(1) inorganic nanoparticles is joined ultrasonic disperse in solvent, obtain uniform dispersion liquid B, wherein inorganic nanoparticles
For silicon dioxide, titanium dioxide, tantalum pentoxide, Barium metatitanate., tourmaline, boehmite or silsesquioxane nano granule, solvent
For N,N-dimethylformamide；
(2) adding polymer in dispersion liquid B, carry out magnetic agitation, preparation obtains uniform spinning liquid B, and wherein polymer is
Kynoar, polyethylene glycol oxide, polyvinylpyrrolidone, polyacrylonitrile, polycaprolactone, polyurethane, fluorinated polyurethane, poly-
Sulfone, polyether sulfone, Kynoar-hexafluoropropene, Kynoar-tetrafluoroethylene-perfluoro methyl vinyl ether, polyvinylidene fluoride
The mixture of one or more compositions in alkene-CTFE；
(3) spinning liquid B is carried out Multi needle electrostatic spinning, use PTFE base fabric base material A to be received, be obtain a homogeneously deposited quiet
The composite filtering material B of electric spinning polymer nanofiber；Wherein insulate between the syringe needle of Multi needle electrostatic spinning, and the four of each syringe needle
Having insulant to form isolation groove in week, the degree of depth of groove is 2 times～4 times of needle length, the technique of this Multi needle electrostatic spinning
Condition is: supply voltage 20KV～50KV, and spinning environment condition is temperature 25 DEG C～35 DEG C, relative humidity 25%～80%；Many
Syringe needle spray webbing unit syringe needle spacing 5cm～30cm, spray webbing unit syringe needle quantity is 20～90；
Step 3, the preparation of superfine nano fiber dispersion: first prepare polyvinyl butyral solution, then polyvinyl alcohol is contracted
Butyraldehyde solution adds in blender with superfine nano fiber and disperses, and the rotating speed of blender is 6000r/min～8000r/
Min, obtains uniform dispersion liquid C, wherein superfine nano fiber be Kynoar, polyethylene glycol oxide, polyvinylpyrrolidone,
Polyacrylonitrile, polycaprolactone, polyurethane, fluorinated polyurethane, polysulfones, polyether sulfone, Kynoar-hexafluoropropene, polyvinylidene fluoride
Mixing of one or more compositions in alkene-tetrafluoroethylene-perfluoro methyl vinyl ether, Kynoar-CTFE
Compound, in dispersion liquid C, the content of superfine nano fiber is 0.01wt%～4wt%, superfine nano fibre diameter be 10nm～
150nm, a length of 100nm～200nm；
Step 4, composite filtering material immersion treatment: composite filtering material B step 2 obtained immerses in the dispersion liquid C that step 3 obtains,
Take out post-drying, obtain electrostatic weaving composite filtering material: nanofiber-acupuncture PTFE base fabric filter material.
In such scheme, in (2) of step one, PTFE base fabric uses PTFE fiber and PPS fiber according to mass ratio 20
～50:50～80 mixes, through shredding, combing, lapping and needling process, then carry out immersion treatment and surface deposition.
It is described in detail below in conjunction with specific embodiment.
Embodiment one
Carry out the preparation of nanofiber-acupuncture PTFE base fabric filter material in accordance with the following methods:
Step one, PTFE base fabric pre-treatment:
(1) first 2.6g titanium dioxide nanofiber is added ultrasonic disperse in 130ml ethanol, obtain uniform dispersion liquid A；
(2) PTFE fiber and PPS fiber are mixed according to mass ratio 5:8, through shredding, combing, lapping and needling process,
Then in dispersion liquid A, soak 6min, then take out 72 DEG C of drying, it is thus achieved that the PTFE of surface deposition of titanium oxide nanofiber
Base fabric base material A；
Step 2, electrostatic spinning:
(1) inorganic nanoparticles joining ultrasonic disperse in solvent, the ultrasonic disperse time is 30min, is disperseed uniformly
Liquid B, wherein inorganic nanoparticles is silicon dioxide, and solvent is DMF；
(2) adding polymer in dispersion liquid B, carry out magnetic agitation, mixing time 2h, preparation obtains uniform spinning liquid B, its
Middle polymer is Kynoar；
(3) spinning liquid B is carried out Multi needle electrostatic spinning, use PTFE base fabric base material A to be received, be obtain a homogeneously deposited quiet
The composite filtering material B of electric spinning polymer nanofiber, wherein insulate between the syringe needle of Multi needle electrostatic spinning, and the four of each syringe needle
Having insulant to form isolation groove in week, the degree of depth of groove is 3 times of needle length, the process conditions of this Multi needle electrostatic spinning
For: supply voltage 50KV, spinning environment condition is temperature 30 DEG C, relative humidity 40%；Multi needle spray webbing unit syringe needle spacing
20cm, spray webbing unit syringe needle quantity is 90；
Step 3, the preparation of superfine nano fiber dispersion: first prepare polyvinyl butyral solution, then polyvinyl alcohol is contracted
Butyraldehyde solution adds in blender with superfine nano fiber and disperses, and the rotating speed of blender is 6000r/min, obtains uniform
Dispersion liquid C, wherein superfine nano fiber is polycaprolactone；
Step 4, composite filtering material immersion treatment: composite filtering material B step 2 obtained immerses in the dispersion liquid C that step 3 obtains,
Soak time be 30min, 25 DEG C of drying after taking-up, obtain electrostatic weave composite filtering material: nanofiber-acupuncture PTFE base fabric
Filter material.
Embodiment two
Carry out the preparation of nanofiber-acupuncture PTFE base fabric filter material in accordance with the following methods:
Step one, PTFE base fabric pre-treatment:
(1) first 1.1g nanometer activated carbon fiber is added ultrasonic disperse in 70ml ethanol, obtain uniform dispersion liquid A；
(2) PTFE fiber and PPS fiber are mixed according to mass ratio 5:16, through shredding, combing, lapping and acupuncture work
Skill, then soaks 4min in dispersion liquid A, then takes out 80 DEG C of drying, it is thus achieved that surface deposition nanometer activated carbon fiber
PTFE base fabric base material A；
Step 2, electrostatic spinning:
(1) inorganic nanoparticles joining ultrasonic disperse in solvent, the ultrasonic disperse time is 40min, is disperseed uniformly
Liquid B, wherein inorganic nanoparticles is silicon dioxide, and solvent is DMF；
(2) adding polymer in dispersion liquid B, carry out magnetic agitation, mixing time 2h, preparation obtains uniform spinning liquid B, its
Middle polymer is Kynoar；
(3) spinning liquid B is carried out Multi needle electrostatic spinning, use PTFE base fabric base material A to be received, be obtain a homogeneously deposited quiet
The composite filtering material B of electric spinning polymer nanofiber, wherein insulate between the syringe needle of Multi needle electrostatic spinning, and the four of each syringe needle
Having insulant to form isolation groove in week, the degree of depth of groove is 3 times of needle length, the process conditions of this Multi needle electrostatic spinning
For: supply voltage 20KV, spinning environment condition is temperature 35 DEG C, relative humidity 40%；Multi needle spray webbing unit syringe needle spacing
10cm, spray webbing unit syringe needle quantity is 90；
Step 3, the preparation of superfine nano fiber dispersion: first prepare polyvinyl butyral solution, then polyvinyl alcohol is contracted
Butyraldehyde solution adds in blender with superfine nano fiber and disperses, and obtains uniform dispersion liquid C, wherein superfine nano fiber
For polyethylene glycol oxide；
Step 4, composite filtering material immersion treatment: composite filtering material B step 2 obtained immerses in the dispersion liquid C that step 3 obtains,
Soak time be 5min, 50 DEG C of drying after taking-up, obtain electrostatic weave composite filtering material: nanofiber-acupuncture PTFE base fabric
Filter material.
Embodiment three
Carry out the preparation of nanofiber-acupuncture PTFE base fabric filter material in accordance with the following methods:
Step one, PTFE base fabric pre-treatment:
(1) first 1.9g titanium dioxide nanofiber is added ultrasonic disperse in 90ml ethanol, obtain uniform dispersion liquid A；
(2) PTFE fiber and PPS fiber are mixed according to mass ratio 1:1, through shredding, combing, lapping and needling process,
Then in dispersion liquid A, soak 4min, then take out 80 DEG C of drying, it is thus achieved that the PTFE of surface deposition of titanium oxide nanofiber
Base fabric base material A；
Step 2, electrostatic spinning:
(1) inorganic nanoparticles joining ultrasonic disperse in solvent, the ultrasonic disperse time is 40min, is disperseed uniformly
Liquid B, wherein inorganic nanoparticles is silicon dioxide, and solvent is DMF；
(2) adding polymer in dispersion liquid B, carry out magnetic agitation, mixing time 3h, preparation obtains uniform spinning liquid B, its
Middle polymer is Kynoar；
(3) spinning liquid B is carried out Multi needle electrostatic spinning, use PTFE base fabric base material A to be received, be obtain a homogeneously deposited quiet
The composite filtering material B of electric spinning polymer nanofiber, wherein insulate between the syringe needle of Multi needle electrostatic spinning, and the four of each syringe needle
Having insulant to form isolation groove in week, the degree of depth of groove is 3 times of needle length, the process conditions of this Multi needle electrostatic spinning
For: supply voltage 50KV, spinning environment condition is temperature 30 DEG C, relative humidity 40%；Multi needle spray webbing unit syringe needle spacing
10cm, spray webbing unit syringe needle quantity is 90；
Step 3, the preparation of superfine nano fiber dispersion: first prepare polyvinyl butyral solution, then polyvinyl alcohol is contracted
Butyraldehyde solution adds in blender with superfine nano fiber and disperses, and obtains uniform dispersion liquid C, wherein superfine nano fiber
For polyethylene glycol oxide；
Step 4, composite filtering material immersion treatment: composite filtering material B step 2 obtained immerses in the dispersion liquid C that step 3 obtains,
Soak time be 5min, 50 DEG C of drying after taking-up, obtain electrostatic weave composite filtering material: nanofiber-acupuncture PTFE base fabric
Filter material.
After testing, this filter material reaches to the filter efficiency of the granule that cement industry dust size is 0.05 μm～15 μm
99.999%, filter effect is excellent.
Claims (10)
1. a preparation method for nanofiber-acupuncture PTFE base fabric filter material, comprises the following steps: step one, before PTFE base fabric
Process；Step 2, electrostatic spinning；Step 3, the preparation of superfine nano fiber dispersion；Step 4, composite filtering material immersion treatment；
It is characterized in that,
In described step one,
(1) titanium dioxide nanofiber or nanometer activated carbon fiber are added in ethanol, and ultrasonic disperse, disperseed uniformly
Liquid A；
(2) take out after PTFE base fabric being soaked in dispersion liquid A and dry, it is thus achieved that surface deposition of titanium oxide nanofiber or nanometer
The PTFE base fabric base material A of activated carbon fiber；
In described step 2,
(1) inorganic nanoparticles is joined ultrasonic disperse in solvent, obtain uniform dispersion liquid B；
(2) adding polymer in dispersion liquid B, preparation obtains uniform spinning liquid B；
(3) spinning liquid B is carried out Multi needle electrostatic spinning, use PTFE base fabric base material A to be received, be obtain a homogeneously deposited quiet
The composite filtering material B of electric spinning polymer nanofiber；
In described step 3, first prepare polyvinyl butyral solution, then by polyvinyl butyral solution and superfine nano
Fiber adds in blender and disperses, and obtains uniform dispersion liquid C；
In described step 4, composite filtering material B step 2 obtained immerses in the dispersion liquid C that step 3 obtains, and takes out post-drying,
Obtain electrostatic weaving composite filtering material: nanofiber-acupuncture PTFE base fabric filter material.
The preparation method of a kind of nanofiber the most as claimed in claim 1-acupuncture PTFE base fabric filter material, it is characterised in that institute
Stating in (1) of step one, titanium dioxide nanofiber or the mass fraction of nanometer activated carbon fiber in dispersion liquid A are 0.2%
～4%, described titanium dioxide nanofiber or a diameter of 30nm～80nm of nanometer activated carbon fiber, a length of 300nm～
600nm。
The preparation method of a kind of nanofiber the most as claimed in claim 1-acupuncture PTFE base fabric filter material, it is characterised in that institute
Stating in (1) of step 2, inorganic nanoparticles is silicon dioxide, titanium dioxide, tantalum pentoxide, Barium metatitanate., tourmaline, Bo Mu
Stone or silsesquioxane nano granule, solvent is DMF.
The preparation method of a kind of nanofiber the most as claimed in claim 1-acupuncture PTFE base fabric filter material, it is characterised in that institute
Stating in (2) of step 2, described polymer is Kynoar, polyethylene glycol oxide, polyvinylpyrrolidone, polyacrylonitrile, gathers
Caprolactone, polyurethane, fluorinated polyurethane, polysulfones, polyether sulfone, Kynoar-hexafluoropropene, Kynoar-tetrafluoroethene-
The mixture of one or more compositions in perfluoro methyl vinyl ether, Kynoar-CTFE.
The preparation method of a kind of nanofiber the most as claimed in claim 1-acupuncture PTFE base fabric filter material, it is characterised in that institute
State in (3) of step 2, insulate between the syringe needle of Multi needle electrostatic spinning, and the surrounding of each syringe needle has insulant to be formed
Isolation groove, the degree of depth of groove is 2 times～4 times of needle length.
The preparation method of a kind of nanofiber the most as claimed in claim 5-acupuncture PTFE base fabric filter material, it is characterised in that institute
Stating in (3) of step 2, the process conditions of Multi needle electrostatic spinning are: supply voltage 20KV～50KV, and spinning environment condition is
Temperature 25 DEG C～35 DEG C, relative humidity 25%～80%；Multi needle spray webbing unit syringe needle spacing 5cm～30cm, spray webbing unit pin
Head quantity is 20～90.
The preparation method of a kind of nanofiber the most as claimed in claim 1-acupuncture PTFE base fabric filter material, it is characterised in that institute
Stating in step 3, superfine nano fiber is Kynoar, polyethylene glycol oxide, polyvinylpyrrolidone, polyacrylonitrile, gathers in oneself
Ester, polyurethane, fluorinated polyurethane, polysulfones, polyether sulfone, Kynoar-hexafluoropropene, Kynoar-tetrafluoroethylene-perfluoro
The mixture of one or more compositions in methyl vinyl ether, Kynoar-CTFE.
The preparation method of a kind of nanofiber the most as claimed in claim 7-acupuncture PTFE base fabric filter material, it is characterised in that institute
Stating in step 3, in dispersion liquid C, the content of superfine nano fiber is 0.01wt%～4wt%, and superfine nano fibre diameter is
10nm～150nm, a length of 100nm～200nm.
The preparation method of a kind of nanofiber the most as claimed in claim 8-acupuncture PTFE base fabric filter material, it is characterised in that institute
Stating in step 3, the rotating speed of blender is 6000r/min～8000r/min.
The preparation method of a kind of nanofiber the most as claimed in any one of claims 1-9 wherein-acupuncture PTFE base fabric filter material, its
Be characterised by, in (2) of described step one, PTFE base fabric use PTFE fiber and PPS fiber according to mass ratio 20～50:50～
80 mix, and through shredding, combing, lapping and needling process, then carry out immersion treatment and surface deposition.
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| CN111111776A (en) * | 2019-11-28 | 2020-05-08 | 安徽元琛环保科技股份有限公司 | In-situ synthesis composite carrier loaded vanadium-tungsten catalyst and preparation method thereof |
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| CN114753058A (en) * | 2022-04-28 | 2022-07-15 | 昆山吉山会津塑料工业股份有限公司 | Lightweight high-strength automobile wheel cover plate and preparation method thereof |
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