CN106512556A - Dendritic electrostatic spinning/electret composite nanofiber membrane filter material and preparation method thereof - Google Patents
Dendritic electrostatic spinning/electret composite nanofiber membrane filter material and preparation method thereof Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
- B01D39/1607—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous
- B01D39/1623—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- 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
- B01D46/543—Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms using membranes
-
- 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
- D01D5/0069—Electro-spinning characterised by the electro-spinning apparatus characterised by the spinning section, e.g. capillary tube, protrusion or pin
-
- 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
- D01D5/0092—Electro-spinning characterised by the electro-spinning apparatus characterised by the electrical field, e.g. combined with a magnetic fields, using biased or alternating fields
-
- 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
- D01F6/88—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds
- D01F6/94—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of other polycondensation products
-
- 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
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
- D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
- D04H1/728—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged by electro-spinning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/10—Filtering material manufacturing
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Dispersion Chemistry (AREA)
- Filtering Materials (AREA)
- Artificial Filaments (AREA)
- Multicomponent Fibers (AREA)
Abstract
The invention discloses a dendritic electrostatic spinning/electret composite nanofiber membrane filter material. The material is composed of the following raw materials of, by weight, 75 to 90 parts of polythioetherimide, 7 to 13 parts of silicon monoxide, 10 to 16 parts of powdered activated carbon, 2 to 3 parts of a 3-aminopropyltriethoxysilane coupling agent, 0.8 to 2 parts of glacial acetic acid, a proper amount of deionized water, 4 to 7 parts of metatitanic acid, a proper amount of a 0.6 mol/L AgNO3 solution, a proper amount of N-methyl pyrrolidone, 0.5 to 2 parts of dibutyl phthalate and 1 to 3 parts of tetra-n-propylammonium chloride. Silicon nanowires containing alpha-quartz are prepared, the electrostatic spinning/electret composite fiber filter material is prepared through the electrostatic spinning technique and has the excellent electric charge storage performance, and the filter efficiency of the filter material is greatly improved. In addition, nano-silver is added, nano-titanium dioxide is loaded, the antibacterial endurance property of the filter material is improved, and the long-time high-efficiency filter effect is achieved.
Description
Technical field
The invention belongs to field of air filtration, and in particular to a kind of dendritic Static Spinning/electret composite nano fiber
Membrane filtration material and preparation method thereof.
Technical background
With going deep into and fast-developing for process of industrialization, the dust granules thing being discharged in air is sharply increased, wherein
PM2.5（Particulate pollutant of the particle diameter less than 2.5 m）The health of the mankind can be caused serious injury, which is inhaled into meeting after human body
Bronchus are directly entered, cause the diseases such as asthma, bronchitis, pneumoconiosis and cardiovascular diseasess, this is to cause China's patients with lung cancer urgency
Increase severely the one of the main reasons for adding.Therefore air filter unit becomes study hotspot, the research of its core filtering material and opens
Send out to be even more and become the most important thing.
Through electret process, in surface band, electric charge makes it have higher filtration effect to traditional melt-blown non-woven electret material
Rate, but its charge stability is easily affected by environment, and charge decay rate is very fast, filter efficiency is declined to a great extent therewith.Additionally, staying
Pole process also increased production cost to a certain extent as a necessary aftertreatment technology.
Electrostatic spinning process needs to apply high pressure, adds the inorganic electret of excellent performance, by quiet in spinning solution
Electrospun, makes fiber and electrodeless electret all take electric charge, can greatly enhance Static Spinning/electret bluk recombination using Electrostatic Absorption
The filter efficiency of fibrous membrane, and resistance pressure drop is reduced, PM2.5 can effectively be protected.
Li little Qi, high crystalline substance pair et al. exist《Electret Polyetherimide-silica nano fibrous membrane answering in air filtration
With》Electrostatic spinning technique is adopted in one text, first with Polyetherimide（PEI）For raw material, the PEI for preparing variable concentrations is molten
The electrets such as liquid, addition silicon dioxide, silicon nitride, Barium metatitanate., the addition of electret make big quantity space on electrostatic spinning fiber film band
Electric charge so as to which filter efficiency is greatly improved.
The present invention is added to silicon nanowires as inorganic electret in Polyetherimide spinning liquid, prepares Polyetherimide
Composite fibre filtering material, adds the antimicrobial form that Ag-carried nanometer titanium dioxide improves composite fibre filtering material, improves electret
The strainability of filtering material.
The content of the invention
Not enough for prior art, the present invention provides a kind of dendritic Static Spinning/electret composite nano-fiber membrane mistake
Filter material material and preparation method thereof.
A kind of dendritic Static Spinning/electret composite nano-fiber membrane filtering material, by the raw material group of following weight portion
Point：Polyetherimide 75-90 part, silicon monoxide 7-13 parts, Powdered Activated Carbon 10-16 parts, 3- aminopropyl triethoxysilane idols
Connection agent 2-3 parts, glacial acetic acid 0.8-2 parts, appropriate deionized water, metatitanic acid 4-7 parts, the AgNO of 0.6mol/L3Appropriate solution, N- first
Base ketopyrrolidine is appropriate, dibutyl phthalate 0.5-2 parts, four n-pro-pyl ammonium chloride 1-3 parts.
Comprise the following steps that：
（1）The preparation of Ag-carried nanometer titanium dioxide：
Metatitanic acid is added in deionized water, in 0.4-0.7mol/L, be heated to 105-125 DEG C maintains which to control solution concentration
, there are hydrolysis and generate white metatitanic acid precipitation in boiling, centrifugal filtration, wash into precipitation and no longer detect SO4 2-Ion, leaching
AgNO of the stain in 0.6mol/L3In solution, after drying at 70-90 DEG C, 1-2 hours are calcined at 460-490 DEG C, obtain carrying silver
Nano titanium oxide；
（2）The preparation of silicon nanowires：
The little porcelain boat that will be equipped with silicon monoxide powder is placed horizontally in the middle of alumina tube, and the pipe is placed on high temperature process furnances then
In, evacuation then temperature is increased to 100-200,800-1100 DEG C respectively and 50-70 point is incubated respectively in 80-100Pa
Clock, is warmed up to 1300-1400 DEG C of insulation 3-5 hour afterwards；550-650 DEG C is cooled to the speed of 1-3 DEG C/min afterwards and is protected
Warm 20-40 minutes, while air is blasted to furnace chamber with 50sccm, naturally cool to room temperature, obtain silicon nanowires, it is standby；
（3）The preparation of activated carbon supported silicon nanowires：
1. 3- aminopropyl triethoxysilane coupling agents are added to into deionized water, and pH to 4 are adjusted with a small amount of glacial acetic acid,
Stir 20-40 minutes under room temperature, add step afterwards（1）The silicon nanowires for obtaining is little in 80-100 DEG C of back flow reaction 11-13
When, sucking filtration, washing, drying obtain silicon amide nanowire composite；
2. the silicon amide nanowire composite for obtaining, Powdered Activated Carbon are added to into deionized water, with ultrasound wave 40 DEG C,
20-40 minutes are mixed under conditions of 150W, static aging 24 hours under room temperature, during deionized water cleaning to effluent is in repeatedly
Property, 110-120 DEG C of drying 10-14 hour is to constant weight, then is placed in 380-420 DEG C of roasting 3-5 hour in Muffle furnace, cools down, is dried,
Activated carbon supported silicon nanowires is obtained；
（4）The preparation of spinning solution：
1., by step（1）Obtain Ag-carried nanometer titanium dioxide, step（3）Activated carbon supported silicon nanowires is obtained and adds N- methyl
In ketopyrrolidine, ultrasound 1-3 hours in ultrasonic cleaner are placed on, solution A is set to；
2., at ambient temperature, by Polyetherimide and N-Methyl pyrrolidone with 1:The ratio mixing of 3-4, adds adjacent benzene two
Formic acid dibutyl ester is stirred continuously dissolves which, uses ParafilmTM bottleneck, is placed on 55-65 DEG C of heating 18-22 hour in oil bath, if
For solution B, it is placed on magnetic stirring apparatuss and stirs, be slowly added to above-mentioned solution A, continue stirring 7-9 hours, adds four positive third afterwards
Ammonium chloride stirs 10-30 minutes, is configured to the spinning liquid of good fluidity；
（5）Above-mentioned spinning solution is carried out into electrostatic spinning, electrostatic spinning nano fiber electret filtering material is obtained.
Wherein, described electrostatic spinning process parameter is：Voltage is 1-50KV, and syringe needle is 0.1- to template distance is received
2m, spinnerette diameters are 1 μm of -2mm, and spinning speed is 0.1-20mL/h, and the spinning time is 8-10 hours, and ambient temperature is 20-
60 DEG C, envionmental humidity is 20-80%.
Compared with prior art, the present invention has advantages below：
（1）The present invention prepares the silicon nanowires containing alpha-quartz, as the volumetric expansion in alpha-quartz forming process is by outer layer
Amorphous silica limit and make alpha-quartz generate piezoelectric effect, while by the electric charge of generation be stored in outer layer have it is good
In the amorphous silica layer of good electric charge storge quality, so as to show good electret behavior, by electrostatic spinning skill
One step of art prepares Static Spinning/electret composite fibre filtering material, have that aperture is little, porosity is high when PM2.5 particles are purified,
The advantages of low-drag, and with excellent Charge Storage Stability energy, greatly improve the filter efficiency of filter material.
（2）Activated carbon has the chemical functional group of abundant pore structure and uniqueness, is environmentally friendly superior adsorbent,
The present invention improves load of the activated carbon to silicon nanowires using the activated carbon supported silicon nanowires Jing after silane coupler process
Amount, both compounding uses improve absorption of the filter material to harmful substance in air.
（3）Surface is carried out using nanometer silver loading nano titanium oxide to be modified, can expand to the utilization scope of light can
See light, the harmful substances such as the micronic dust in the air of filtering material Long-Term Sorption are decomposed in the realization under conditions of visible light catalytic, and
And antibacterial, the microorganism such as virus grown on filtering materials is decomposed in both collaborations, improves self-cleaning performance, the antibacterial of filtering material
Enduring quality, reaches long-term efficient filter effect.
（4）The present invention adds four n-pro-pyl ammonium chloride as organic salt dissolving, carries relatively long alkane chain in its structure,
Can control its dispersion in spinning liquid to a certain extent uneven, under electrostatic spinning effect, organic branched salt content is higher
Region cleaves into branch part as its larger electrical conductivity causes which to be subject to bigger electric field force, i.e. branched fiber, organic
The branch trunk that the less region of branched salt content is formed after being subject to electric field force drawing-off refinement, i.e. trunk fiber, general performance are a kind of
The nanofiber of dendritic structure, gives the more excellent obstruct of composite nano-fiber membrane filtering material, absorption property, in air
Filtration art has more wide application prospect.
Specific embodiment
A kind of dendritic Static Spinning/electret composite nano-fiber membrane filtering material, by the raw material group of following weight portion
Point：Polyetherimide 85, silicon monoxide 11, Powdered Activated Carbon 15,3- aminopropyl triethoxysilanes coupling agent 2, glacial acetic acid
1.5, appropriate deionized water, metatitanic acid 6, the AgNO of 0.6mol/L3Appropriate solution, appropriate N-Methyl pyrrolidone, O-phthalic
Dibutyl phthalate 2, four n-pro-pyl ammonium chloride 3.
Comprise the following steps that：
（1）The preparation of Ag-carried nanometer titanium dioxide：
Metatitanic acid is added in deionized water, in 0.6mol/L, be heated to 115 DEG C makes which maintain boiling to control solution concentration, sends out
Raw hydrolysis generate white metatitanic acid precipitation, centrifugal filtration, wash into precipitation and no longer detect SO4 2-Ion, is immersed in
The AgNO of 0.6mol/L3In solution, calcine 1 hour at 480 DEG C after drying at 80 DEG C, obtain Ag-carried nanometer titanium dioxide；
（2）The preparation of silicon nanowires：
The little porcelain boat that will be equipped with silicon monoxide powder is placed horizontally in the middle of alumina tube, and the pipe is placed on high temperature process furnances then
In, evacuation then temperature is increased to 200,900 DEG C respectively and 60 minutes is incubated respectively, 1350 are warmed up to afterwards in 90Pa
DEG C insulation 4 hours；600 DEG C are cooled to the speed of 2 DEG C/min afterwards and 30 minutes are incubated, while air is blasted with 50sccm arriving
Furnace chamber, naturally cools to room temperature, obtains silicon nanowires, standby；
（3）The preparation of activated carbon supported silicon nanowires：
1. 3- aminopropyl triethoxysilane coupling agents are added to into deionized water, and pH to 4 are adjusted with a small amount of glacial acetic acid,
Stir 30 minutes under room temperature, add step afterwards（1）The silicon nanowires for obtaining, in 95 DEG C of back flow reaction 12 hours, sucking filtration, washes
Wash, be dried, obtain silicon amide nanowire composite；
2. the silicon amide nanowire composite for obtaining, Powdered Activated Carbon are added to into deionized water, with ultrasound wave 40 DEG C,
Mix 30 minutes under conditions of 150W, static aging 24 hours under room temperature, deionized water is cleaned repeatedly to effluent in neutrality,
115 DEG C of drying 12 hours are to constant weight, then are placed in Muffle furnace 400 DEG C of roastings 4 hours, cooling, are dried, and activated carbon supported silicon is obtained
Nano wire；
（4）The preparation of spinning solution：
1., by step（1）Obtain Ag-carried nanometer titanium dioxide, step（3）Activated carbon supported silicon nanowires is obtained and adds N- methyl
In ketopyrrolidine, ultrasound 2 hours in ultrasonic cleaner are placed on, solution A is set to；
2., at ambient temperature, by Polyetherimide and N-Methyl pyrrolidone with 1:4 ratio mixing, adds O-phthalic
Dibutyl phthalate is stirred continuously dissolves which, uses ParafilmTM bottleneck, is placed in oil bath 60 DEG C and heats 20 hours, is set to solution B,
It is placed on magnetic stirring apparatuss and stirs, be slowly added to above-mentioned solution A, continues stirring 8 hours, add four n-pro-pyl ammonium chloride to stir afterwards
Mix 20 minutes, be configured to the spinning liquid of good fluidity；
（5）Above-mentioned spinning solution is carried out into electrostatic spinning, electrostatic spinning nano fiber electret filtering material is obtained.
Wherein, described electrostatic spinning process parameter is：Voltage is 12KV, and syringe needle is 20cm to template distance is received, and is sprayed
Silk a diameter of 0.5mm, spinning speed are 0.6mL/h, and the spinning time is 9 hours, and ambient temperature is 25 DEG C, envionmental humidity
For 55%.
Properties of product test result：
Breathability：188.06L/m2S, porosity：>80%, pressure drag：<20Pa, can to the filter efficiency of 0.006-1 μm of granule
Up to more than 99.999%.
Claims (3)
1. a kind of dendritic Static Spinning/electret composite nano-fiber membrane filtering material, it is characterised in that by following weight portion
Raw material components：Polyetherimide 75-90 part, silicon monoxide 7-13 parts, Powdered Activated Carbon 10-16 parts, three ethoxy of 3- aminopropyls
Base silane coupling agent 2-3 parts, glacial acetic acid 0.8-2 parts, appropriate deionized water, metatitanic acid 4-7 parts, the AgNO of 0.6mol/L3Solution
In right amount, appropriate N-Methyl pyrrolidone, dibutyl phthalate 0.5-2 parts, four n-pro-pyl ammonium chloride 1-3 parts.
2. a kind of dendritic Static Spinning according to claims 1/electret composite nano-fiber membrane filtering material
Preparation method, it is characterised in that comprise the following steps that：
（1）The preparation of Ag-carried nanometer titanium dioxide：
Metatitanic acid is added in deionized water, in 0.4-0.7mol/L, be heated to 105-125 DEG C maintains which to control solution concentration
, there are hydrolysis and generate white metatitanic acid precipitation in boiling, centrifugal filtration, wash into precipitation and no longer detect SO4 2-Ion, leaching
AgNO of the stain in 0.6mol/L3In solution, after drying at 70-90 DEG C, 1-2 hours are calcined at 460-490 DEG C, obtain carrying silver
Nano titanium oxide；
（2）The preparation of silicon nanowires：
The little porcelain boat that will be equipped with silicon monoxide powder is placed horizontally in the middle of alumina tube, and the pipe is placed on high temperature process furnances then
In, evacuation then temperature is increased to 100-200,800-1100 DEG C respectively and 50-70 point is incubated respectively in 80-100Pa
Clock, is warmed up to 1300-1400 DEG C of insulation 3-5 hour afterwards；550-650 DEG C is cooled to the speed of 1-3 DEG C/min afterwards and is protected
Warm 20-40 minutes, while air is blasted to furnace chamber with 50sccm, naturally cool to room temperature, obtain silicon nanowires, it is standby；
（3）The preparation of activated carbon supported silicon nanowires：
1. 3- aminopropyl triethoxysilane coupling agents are added to into deionized water, and pH to 4 are adjusted with a small amount of glacial acetic acid,
Stir 20-40 minutes under room temperature, add step afterwards（1）The silicon nanowires for obtaining is little in 80-100 DEG C of back flow reaction 11-13
When, sucking filtration, washing, drying obtain silicon amide nanowire composite；
2. the silicon amide nanowire composite for obtaining, Powdered Activated Carbon are added to into deionized water, with ultrasound wave 40 DEG C,
20-40 minutes are mixed under conditions of 150W, static aging 24 hours under room temperature, during deionized water cleaning to effluent is in repeatedly
Property, 110-120 DEG C of drying 10-14 hour is to constant weight, then is placed in 380-420 DEG C of roasting 3-5 hour in Muffle furnace, cools down, is dried,
Activated carbon supported silicon nanowires is obtained；
（4）The preparation of spinning solution：
1., by step（1）Obtain Ag-carried nanometer titanium dioxide, step（3）Activated carbon supported silicon nanowires is obtained and adds N- methyl
In ketopyrrolidine, ultrasound 1-3 hours in ultrasonic cleaner are placed on, solution A is set to；
2., at ambient temperature, by Polyetherimide and N-Methyl pyrrolidone with 1:The ratio mixing of 3-4, adds adjacent benzene two
Formic acid dibutyl ester is stirred continuously dissolves which, uses ParafilmTM bottleneck, is placed on 55-65 DEG C of heating 18-22 hour in oil bath, if
For solution B, it is placed on magnetic stirring apparatuss and stirs, be slowly added to above-mentioned solution A, continue stirring 7-9 hours, adds four positive third afterwards
Ammonium chloride stirs 10-30 minutes, is configured to the spinning liquid of good fluidity；
（5）Above-mentioned spinning solution is carried out into electrostatic spinning, electrostatic spinning nano fiber electret filtering material is obtained.
3. a kind of dendritic Static Spinning according to claims 2/electret composite nano-fiber membrane filtering material
Preparation method, it is characterised in that described electrostatic spinning process parameter is：Voltage is 1-50KV, and syringe needle is to reception template distance
For 0.1-2m, spinnerette diameters are 1 μm of -2mm, and spinning speed is 0.1-20mL/h, and the spinning time is 8-10 hours, ambient temperature
For 20-60 DEG C, envionmental humidity is 20-80%.
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| CN113797649A (en) * | 2021-08-12 | 2021-12-17 | 浙江大学 | Antibacterial and antivirus air filtering material and preparation method thereof |
| CN113413771A (en) * | 2021-08-20 | 2021-09-21 | 广东宜纳新材料科技有限公司 | Preparation method of quartz fiber filter membrane |
| CN113413771B (en) * | 2021-08-20 | 2021-11-16 | 广东宜纳新材料科技有限公司 | Preparation method of quartz fiber filter membrane |
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