CN109364579A - A kind of air purifier electret nanofiber filtration material and preparation method thereof - Google Patents
A kind of air purifier electret nanofiber filtration material and preparation method thereof Download PDFInfo
- Publication number
- CN109364579A CN109364579A CN201811317106.9A CN201811317106A CN109364579A CN 109364579 A CN109364579 A CN 109364579A CN 201811317106 A CN201811317106 A CN 201811317106A CN 109364579 A CN109364579 A CN 109364579A
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- polymer
- air purifier
- electret
- fiber
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- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 claims description 2
- MHABMANUFPZXEB-UHFFFAOYSA-N O-demethyl-aloesaponarin I Natural products O=C1C2=CC=CC(O)=C2C(=O)C2=C1C=C(O)C(C(O)=O)=C2C MHABMANUFPZXEB-UHFFFAOYSA-N 0.000 claims description 2
- 240000007594 Oryza sativa Species 0.000 claims description 2
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- JRPBQTZRNDNNOP-UHFFFAOYSA-N barium titanate Chemical compound [Ba+2].[Ba+2].[O-][Ti]([O-])([O-])[O-] JRPBQTZRNDNNOP-UHFFFAOYSA-N 0.000 claims description 2
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/02—Loose filtering material, e.g. loose fibres
- B01D39/04—Organic material, e.g. cellulose, cotton
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- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
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- 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
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- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/02—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D01F6/04—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polyolefins
- D01F6/06—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polyolefins from polypropylene
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- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
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- D01F6/08—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polymers of halogenated hydrocarbons
- D01F6/12—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polymers of halogenated hydrocarbons from polymers of fluorinated hydrocarbons
-
- 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
- D01F6/02—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D01F6/16—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polymers of unsaturated carboxylic acids or unsaturated organic esters, e.g. polyacrylic esters, polyvinyl acetate
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- D—TEXTILES; PAPER
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- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/02—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D01F6/18—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polymers of unsaturated nitriles, e.g. polyacrylonitrile, polyvinylidene cyanide
-
- 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
- D01F6/02—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D01F6/20—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polymers of cyclic compounds with one carbon-to-carbon double bond in the side chain
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- D—TEXTILES; PAPER
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- 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
- D01F6/50—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 polyalcohols, polyacetals or polyketals
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- 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
- D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
- D01F6/62—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyesters
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- 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
- D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
- D01F6/66—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyethers
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- 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
- D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
- D01F6/76—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from other polycondensation products
-
- 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
- B01D2239/04—Additives and treatments of the filtering material
- B01D2239/0435—Electret
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- 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
- B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
- B01D2239/0604—Arrangement of the fibres in the filtering material
- B01D2239/0631—Electro-spun
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- 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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
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- B01D2258/06—Polluted air
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Abstract
The present invention relates to a kind of air purifier electret nanofiber filtration material and preparation method thereof, preparation method: quickly it is heating and curing in the liquid mixture dissolved with polymer of the electrostatic spinning process to die orifice exit, is quickly cooled down solidification or fast phase is heating and curing obtained air purifier electret nanofiber filtration material；It is quickly heating and curing and refers to and rise to T1 in 0.1~0.9ms at 3~5cm of die orifice exit, T1 >=solvent boiling point t, be quickly cooled down solidification and refer to and be cooled to -40~-20 DEG C in 0.1~0.9ms at 3~5cm of die orifice exit, fast phase be heating and curing refer to t/2 ± 5 DEG C are risen in 0.1~0.9ms at 3~5cm of die orifice exit after 3/4*t ± 10 DEG C are risen in 0.1~0.9ms at 9~10cm of die orifice exit.Preparation method of the present invention is simple, and finally it is undamped to save a month charge for obtained product.
Description
Technical field
The invention belongs to fiber electret Material Field, be related to a kind of air purifier electret nanofiber filtration material and
Preparation method.
Background technique
High-performance static electro spinning nano fiber filtering material need to have the characteristics that high efficiency, lower resistance, but conventional filter material
Material realizes effective filtering to particle by the design feature (aperture size, bulk density etc.) of material itself, usually has
It is efficient while also there is very high pressure drag, cause strainability poor, thus be only difficult by the design feature of fiber itself
Realize the active balance and high efficiency of filter efficiency and pressure drag, the target of lower resistance.Electrostatic adsorption (electret material)
The interception function that electrostatic adsorption force can be increased substantially on the basis of original filter structure efficiency to particle is introduced to mention
Filtration efficiency, while guaranteeing the characteristics of low pressure hinders again.
The research, exploitation and production of fiber electret material mainly use the technology of high-voltage corona discharge at present, although the skill
Art can preferably prepare electret fiber filtering, but it is simultaneously there is also shortcomings, such as electret performance are unstable, generated
Charge based on the space charge in fiber sheath and it is vulnerable, the device is complicated, at high cost etc., therefore for developing low-cost and
The fiber filter material that permanent electret is capable of in dynamical electret technology and preparation becomes research emphasis.
Static Spinning is a kind of nanofiber technology of preparing while and a kind of nanofiber that spinning is carried out using high-voltage electricity
Electret technology, compared to corona discharge electret technology advantage be spinning during a large amount of space charges can be injected
In fiber, and space charge is easily captured by the deep trap of fibrous inside, while be can induce dipole polarization and being generated polarization charge,
Electret effect is long-acting persistently, thus can one-step shaping prepare electret filtering material, and there is excellent electret effect.It is open at present
Prepare a kind of the having of electrostatic spinning nano fiber electret material " electrostatic spinning nano fiber electret filtering material and preparation method thereof (ZL
201410452788.X) ", " a kind of Static Spinning for purifying PM2.5/electret composite fibre filtering material and its preparation side
Method (CN201610998771.3) ", " a kind of Static Spinning of high abrasion/electret composite cellulosic membrane filtering material and its preparation side
Method (CN201610846156.0) " but above-mentioned preparation method have that jet stream curing time is long during electrostatic spinning and solvent is big
Residual solvent, which slowly volatilizees, after the problems such as amount residual causes fiber solidifying preceding a large amount of charge dissipations, charge to solidify causes dipole polarization electricity
Lotus depolarization, space charge further dissipate, and eventually lead to that tunica fibrosa electret effect is poor, stability is poor.
All indoors, occupancy is numerous for modern's Working Life, and air purifier is mostly used to improve indoor air quality,
The filtering material that air purifier uses at present is mostly melt-blown filter materials, and electret is vulnerable under high humidity environment and makes for the material
Short with the service life, this severely limits air purifiers to the improvement of air quality.
Therefore, the air purifier electret that a kind of stability is good, at low cost, equipment requirement is small and has excellent performance is studied
Nanofiber filtration material and preparation method thereof becomes at present the urgently technical issues that need to address.
Summary of the invention
The purpose of the present invention is overcoming problems of the prior art, a kind of air purifier electret Nanowire is provided
Dimensional filter material and preparation method thereof.Keep the liquid dissolved with polymer mixed using quick-setting method during electrostatic spinning
It closes object and is converted into non-streaming dynamic from flowable state, with quick " freezing " strand, prevent the generation of depolarization phenomenon, it is subsequent to polymerization
Object carries out instantaneous temperature reduction processing, so that the kinetic energy for the space charge that polymer has trapped reduces, reduces electron escape ability, can
Moment strengthens the storage of the charge in space, strengthens electret effect, in addition, the present invention is gone back in the liquid mixture dissolved with polymer
Inorganic nanoparticles are added to, have very big humidification to electret effect, and inorganic electret is mixed with organic polymer
The interface of generation can generate interfacial polarization in the presence of external electric field, generate polarization charge, further enhance electret effect.
In order to achieve the above object, the present invention adopts the following technical scheme that:
A kind of preparation method of air purifier electret nanofiber filtration material, to the liquid mixing dissolved with polymer
Object carries out electrostatic spinning and obtains air purifier electret nanofiber filtration material, to spinneret orifice during electrostatic spinning
Outlet the liquid mixture dissolved with polymer be quickly heating and curing, be quickly cooled down solidify or fast phase be heating and curing；
Described be quickly heating and curing refer to and be warming up to T1 in 0.1~0.9ms at 3~5cm of die orifice exit, T1 >=dissolved with polymer
Liquid mixture solvent boiling point t, the rapid cooling solidification refers at 3~5cm of die orifice exit in 0.1~0.9ms
- 40~-20 DEG C are inside cooled to, the fast phase, which is heating and curing, to be referred at 3~5cm of die orifice exit in 0.1~0.9ms
It is warming up to after T2 and is warming up to T3 in 0.1~0.9ms at 9~10cm of die orifice exit, t/2+5 DEG C >=T2 >=t/2-5 DEG C, 3/
4*t+10℃≥T3≥3/4*t-10℃.Quickly be heating and curing: heating temperature is too low, and the liquid that not can guarantee dissolved with polymer mixes
The solvent closed in object quickly volatilizees；Heating rate is excessively slow, it is difficult to which it is excessively slow to meet the quick-setting i.e. solvent evaporation rate of requirement, penetrates
Remaining solvent is excessive in stream；Heating rate is too fast, will lead to fibre diameter and slightly becomes fragile excessively with fiber.It is quickly cooled down solidification: cold
But temperature is too low, and energy consumption is excessively high, increases cost；Cooling temperature is excessively high, not can guarantee in the liquid mixture dissolved with polymer
Solvent quickly volatilizees；Cooling rate is too fast, will lead to fibre diameter and slightly becomes fragile excessively with fiber；Cooling rate is excessively slow, it is difficult to meet
It is quickly cooled down that the cured i.e. solvent evaporation rate of requirement is excessively slow, and remaining solvent is excessive in jet stream.Fast phase is heating and curing: making
T2 is warming up in 0.1~0.9ms at 3~5cm of die orifice exit dissolved with the liquid mixture of polymer, so that solvent portion
The phenomenon that volatilization avoids fibre diameter caused by fiber rapid curing excessive, temperature at this time is excessively high or heating rate is too fast, molten
Agent is volatilized, and the too fast fibre diameter that will cause is excessive, and temperature is too low or heating rate is excessively slow, can not solvent be volatilized；In spinneret orifice
9~10cm of outlet is in 0.1~0.9ms and is warming up to T3, on the one hand avoids that fibre diameter is excessive and fiber is excessively crisp, another party
Face guarantees to volatilize completely dissolved with the solvent in the liquid mixture of polymer, and reheating temperature is too low or heating rate is excessively slow,
It not can guarantee the solvent in the liquid mixture dissolved with polymer to volatilize completely, the excessively high waste that will cause cost, heating rate
It is too fast, it will lead to fibre diameter and slightly become fragile excessively with fiber.
During electrostatic spinning, dissolved with polymer liquid mixture under the action of electrostatic field, a large amount of polarization can be generated
Charge, polarization charge at this time are easy due to being influenced by molecular chain movement, environment temperature and humidity etc., so that pole
The molecule of change will appear depolarization phenomenon, cause electret effect poor, and rapid curing can make in a very short period of time dissolved with poly-
The liquid mixture for closing object is converted into non-streaming dynamic from flowable state, with quick " freezing " strand, prevents the hair of depolarization phenomenon
It is raw, strengthen electret effect.Protection scope of the present invention is not limited to that, is consolidated to the liquid mixture dissolved with polymer
Change, as long as guaranteeing that fiber is not in that diameter is excessive or excessively crisp.
As a preferred technical scheme:
A kind of preparation method of air purifier electret nanofiber filtration material as described above, the electrostatic spinning
Technological parameter are as follows: dissolved with 30~120 DEG C of liquid mixture temperature of polymer, 5~70KV of voltage, receive 3~40cm of distance,
0.1~10mL/h of rate of flooding, 15~35 DEG C of environment temperature, humidity 5~90%；In the liquid mixture dissolved with polymer
The mass concentration of polymer is 3~40%.Control spinning temperature is that the temperature control device in the spinneret module by electrostatic spinning is real
Existing, it is equipped with temperature control device and online agitating device in spinneret module, is made by the i.e. control spinning temperature of heating dissolved with polymer
Liquid mixture in the polymer molecular chain " defrosting " freezed, under the action of this is conducive to subsequent additional electric field, dipole point
Sub preferably polarization generates more polarization charges, contains online agitating device in spinneret module, keep inorganic nanoparticles uniform
It is scattered in polymer, prevents from reuniting.
A kind of preparation method of air purifier electret nanofiber filtration material as described above, electrostatic spinning are made
Fiber with receive substrate receive after carry out instantaneous temperature reduction processing, the space charge that instantaneous temperature reduction has trapped polymer
Kinetic energy reduces, and reduces electron escape ability, can strengthen the storage of the charge in space moment, strengthens electret effect, the moment drop
Temperature refer to institute's spinning nano fibre and receive substrate at a distance from be less than 1mm when, nanofiber contacted with liquid nitrogen after be less than 5s when
It is interior to be reduced to 0 DEG C or less；The instantaneous temperature reduction is set at 1~100mm of substrate by receiving in the back side distance for receiving substrate
There is a liquid nitrogen constant release device to realize, the rate of release of the liquid nitrogen constant release device is 1~100L/min, nitrogen
With certain speed by substrate, a reaction force can be generated to nanofiber in-flight, hinder fiber and interfibrous tight
Solid matter column, are conducive to molding nanofiber and form fluffy structure, with formed between fiber without adhesion, it is fluffy it is three-dimensional netted mutually
Logical structure.Liquid nitrogen rate of release is too fast, and the reaction force that nanofiber receives is excessive, it is caused to be difficult to be attached to reception substrate
On；Liquid nitrogen rate of release is excessively slow, and active force is too small, can not be formed between fiber without adhesion, fluffy three-dimensional netted interworking architecture.
A kind of preparation method of air purifier electret nanofiber filtration material as described above, it is described dissolved with polymerization
Polymer in the liquid mixture of object includes the mixing of homopolymer, block copolymer, random copolymer, a variety of different homopolymers
The mixture of object, the mixture of homopolymer and block copolymer or homopolymer and random copolymer.Due to block copolymer difference
Molecule chain part will form different crystal region and amorphous area during Static Spinning, electronics or ion under the action of external electric field
The polarization to form interface is assembled in meeting in interface, generates polarization charge；And the mixture of two or more polymerizations passes through Static Spinning
The nanofiber of silk preparation can be grouped as by multiple polymers group, and will form interface between different polymers compositions, added outside
Point equally will form interfacial polarization under the action of, generate polarization charge, enhance electret effect.
A kind of preparation method of air purifier electret nanofiber filtration material as described above, it is described dissolved with polymerization
Polymer in the liquid mixture of object be polytetrafluoroethylene (PTFE), FEP fluorinated ethylene propylene copolymer, polyfluorinated ethylene propylene, polypropylene, can
Dissolubility polytetrafluoroethylene (PTFE), Kynoar, polystyrene, polybutylene terephthalate, polyester, polyvinyl acetate, nylon 6,
Polystyrene, polyvinyl alcohol, polymethyl methacrylate, polyaniline, polyethylene glycol oxide, polyvinylpyrrolidone, polyacrylonitrile,
Polycaprolactone, polyethylene terephthalate, polyethylene glycol, polyurethane, polysulfones, polyether sulfone, Kynoar-hexafluoropropene,
Appoint in Kynoar-tetrafluoroethylene-perfluoro methyl vinyl ether, Kynoar-chlorotrifluoroethylene and the above polymer
It anticipates the mixture of two or three of polymer；Dissolved with solvent in the liquid mixture of polymer according to type of polymer described in wherein
It respectively corresponds are as follows:
Kynoar: N,N-dimethylformamide (DMF), N-Methyl pyrrolidone (NMP), dimethyl acetamide
(DMAc), triethyl phosphate or dimethyl sulfoxide (DMSO)；
Polypropylene: normal heptane, tetrahydro fluoronaphthalene or dimethylbenzene；
Polybutylene terephthalate: methylene chloride, tetrahydrofuran (THF), chloroform or acetone；
Polyethylene terephthalate: methylene chloride, tetrahydrofuran, chloroform or acetone；
Polyarylate: methylene chloride, tetrahydrofuran, chloroform or acetone；
Polyvinyl acetate: toluene, acetone, ethyl alcohol, acetic acid, ethyl acetate or chloroform；
Nylon 6: formic acid；
Polyvinyl alcohol: water, ethyl alcohol, N,N-dimethylformamide or tetrahydrofuran；
Polymethyl methacrylate: chloroform, acetic acid, ethyl acetate, acetone or toluene；
Polyaniline: N,N-dimethylformamide or N-Methyl pyrrolidone；
Polyethylene glycol oxide: N,N-dimethylformamide, ethyl alcohol, water or chloroform；
Polyvinylpyrrolidone: water, ethyl alcohol, DMAC N,N' dimethyl acetamide or N,N-dimethylformamide；
Polyacrylonitrile: N,N-dimethylformamide or dimethyl sulfoxide；
Polycaprolactone: N,N-dimethylformamide or acetone；
Polyethylene glycol: water, ethyl alcohol or N,N-dimethylformamide；
Polyurethane: N,N-dimethylformamide, acetone or N-Methyl pyrrolidone；
Fluorinated polyurethane: N,N-dimethylformamide, acetone or N-Methyl pyrrolidone；
Polysulfones and polyether sulfone: N,N-dimethylformamide, acetone, N-Methyl pyrrolidone, dimethyl acetamide or tetrahydro
Furans；
Kynoar-hexafluoropropene: N,N-dimethylformamide, N-Methyl pyrrolidone, dimethyl acetamide, phosphoric acid
Triethyl or dimethyl sulfoxide；
Kynoar-tetrafluoroethylene-perfluoro methyl vinyl ether: N,N-dimethylformamide, N-Methyl pyrrolidone,
Dimethyl acetamide, triethyl phosphate or dimethyl sulfoxide；
Kynoar-chlorotrifluoroethylene: N,N-dimethylformamide, N-Methyl pyrrolidone, dimethyl acetamide, phosphorus
Triethylenetetraminehexaacetic acid ester or dimethyl sulfoxide；
The mixture solvent for use of above-mentioned any two or three of polymer: all polymerizations can be dissolved in above-mentioned solvent simultaneously
The mixture of the solvent of the single solvent of object or every kind of polymer；
Dissolved with the liquid mixture process for preparation of polymer are as follows: add a polymer in corresponding solvent, and use magnetic force
Agitating device continuously stirs 3~20h, it is ensured that polymer is completely dissolved.
A kind of preparation method of air purifier electret nanofiber filtration material as described above, it is described dissolved with polymerization
The liquid mixture of object is dispersed at least one inorganic nanoparticles, and the inorganic nanoparticles are silica, three oxidations two
Aluminium, zinc oxide, barium monoxide, titanium dioxide, tantalum pentoxide, barium titanate, lead zirconate titanate, silicon nitride, tourmaline, boehmite or again
Half siloxanes, the additive amount of inorganic nanoparticles are 0.1~10wt% dissolved with the liquid mixture of polymer；Its process for preparation
Are as follows: first inorganic nanoparticles are added in solvent, then it will be added dissolved with the liquid mixture of polymer in 0.5~15h of ultrasound
In, 3~20h is continuously stirred with magnetic stirring apparatus.Inorganic nanoparticles exist as a kind of inorganic electret material in external electric field
Under conditions of have the injection of space charge and the generation of polarization charge, have very big humidification to electret effect, and
Inorganic electret mixes the interface generated with organic polymer can generate interfacial polarization in the presence of external electric field, generate polarization electricity
Lotus, it is same to enhance electret effect.
A kind of preparation method of air purifier electret nanofiber filtration material as described above, the rapid curing
Mode be to be equipped with temperature control device I above the spinning nozzle at 3~5cm, the temperature of temperature control device I is -60~300 DEG C, in spinneret
Temperature control device II is equipped with above hole at 9~10cm, the temperature of temperature control device II is 20~300 DEG C, mixed dissolved with the liquid of polymer
It is nanofiber that it is fast curing-formed after temperature control device, which to close object jet stream,.
A kind of preparation method of air purifier electret nanofiber filtration material, the reception substrate are wood
Pulp cellulose substrate, fiber base material or mixed fiber base material；
The wood pulp cellulose substrate is 0.5~5mNm of stiffness, 8~400g/m of grammes per square metre2Wood pulp cellulose filter paper or
Wood pulp cellulose non-woven cloth, wood pulp cellulose filter paper are the corrugation filter paper that corrugation depth is 0.1~3mm；
The fiber base material is the filter paper or non-woven cloth of containing cellulose fiber, polyester fiber or polyolefine fiber, is endured
Degree is 0.5~5mNm, and grammes per square metre is 6~350g/m2；Filter paper is corrugation filter paper, wherein the corrugation of cellulose fibre corrugation filter paper
Depth is 0.1~3mm；
The mixed fiber base material is the two or more compositions in containing cellulose fiber, polyester fiber and polyolefine fiber
Composite fibre filter paper or non-woven cloth, stiffness be 0.5~5mNm, grammes per square metre be 6~350g/m2, the composite fibre
Filter paper be corrugation filter paper, wherein the corrugation depth of the corrugation filter paper of containing cellulose fiber be 0.1~3mm.
The present invention also provides a kind of using air purifier electret nanofiber made from preparation method as described above
Filtering material, the air purifier with electret nanofiber filtration material be fiber between without adhesion and it is fluffy it is three-dimensional netted mutually
Logical structure, including substrate layer and layers of nanofibers；Substrate layer is porous wood pulp cellulose substrate, fiber base material or mixed fibre
Wiki material, fibre diameter are 10~50 μm, and aperture size is 3~120 μm；The nanofiber diameter of layers of nanofibers is 0.5
~0.8 μm, nanofiber grammes per square metre is 0.01~70g/m2, porosity of=80%；Air purifier electret nanofiber
Filtering material Surface electrostatic potential is 1700~2300V, and 150 ° of hydrophobic angle >, the filter efficiency to 0.006~1 μm of particle is 50
~99.999%, pressure drag is less than 20Pa, and dust containing capacity is 50~3600g/m2, air purifier electret Nanofiber filter
One month charge of material preservation is undamped, hence it is evident that better than material (3~5 days charge decay 30 without the preparation of " rapid curing " technology
~40%).
Invention mechanism:
Since the liquid mixture dissolved with polymer is under the action of electrostatic field, a large amount of polarization charges can be generated, at this time
Polarization charge is easy due to being influenced by molecular chain movement, environment temperature and humidity etc., and polarized molecule is easy
Existing depolarization phenomenon, causes electret effect poor, and rapid curing can make the liquid dissolved with polymer mixed in a very short period of time
It closes object and is converted into non-streaming dynamic from flowable state, with quick " freezing " strand, prevent the generation of depolarization phenomenon, promote electret effect
Fruit reduces electron escape ability in addition, instantaneous temperature reduction provides so that the kinetic energy for the space charge that polymer has trapped reduces,
The storage of the charge in space can be strengthened moment, strengthen electret effect, electret nanofiber filtration material charge produced by the present invention
Decaying is slow, compared with the prior art 3~5 days charge decay 30~40% of product obtained, and product of the present invention performance boost is huge,
It is undamped that product of the present invention can be reserved for a month charge.
The utility model has the advantages that
(1) a kind of air purifier electret nanofiber filtration material prepared by the present invention is handled through " rapid curing "
Static Spinning electret material, it is 1700~2300V that Surface electrostatic potential, which is remarkably reinforced, and common electrostatic spins electret material surface
Electrostatic potential generally only 300~1200V；The electret service life greatly enhances, and preservation one month charge is undamped, and common quiet
One month charge decay 50% of electrospinning electret material；
(2) preparation method of a kind of air purifier electret nanofiber filtration material of the invention has operation letter
The advantages that single, at low cost, small to equipment requirement, great application prospect.
Specific embodiment
The invention will be further elucidated with reference to specific embodiments.It should be understood that these embodiments are merely to illustrate this hair
It is bright rather than limit the scope of the invention.In addition, it should also be understood that, after reading the content taught by the present invention, art technology
Personnel can make various changes or modifications the present invention, and such equivalent forms equally fall within the application the appended claims and limited
Fixed range.
Embodiment 1
A kind of preparation method of air purifier electret nanofiber filtration material, the specific steps of which are as follows:
(1) it prepares the liquid mixture dissolved with polymer: Kynoar is added in n,N-Dimethylformamide, and
11h is continuously stirred with magnetic stirring apparatus；
(2) electrostatic spinning is carried out after the liquid mixture dissolved with polymer that mass concentration is 22% being heated to 50 DEG C,
Rapid curing is carried out to the liquid mixture dissolved with polymer of spinneret orifice during electrostatic spinning, wherein rapid curing refers to
The liquid mixture dissolved with polymer is set to be warming up to 153 DEG C in 0.3ms at die orifice exit 3cm, the technique of electrostatic spinning
Parameter are as follows: voltage 50KV, receiving distance is 20cm, and rate of flooding 0.1mL/h, temperature is 20 DEG C, humidity 55%；
(3) instantaneous temperature reduction is used to 0 DEG C hereinafter, air purifier is made after fiber obtained by electrostatic spinning is received with reception substrate
Electret nanofiber filtration material, wherein the mode of instantaneous temperature reduction is that a liquid nitrogen perseverance is equipped at the back side 30mm for receiving substrate
Fast release device, the rate of release of liquid nitrogen constant release device are 20L/min, and it is 3.2mNm, grammes per square metre that reception substrate, which is stiffness,
210g/m2, corrugation depth is the wood pulp cellulose filter paper of 1.5mm.
The air purifier as made from above-mentioned preparation method with electret nanofiber filtration material be fiber between without adhesion and
Fluffy three-dimensional netted interworking architecture, including substrate layer and layers of nanofibers；Substrate layer is porous wood pulp cellulose substrate,
Fibre diameter is 13 μm, and aperture size is 50 μm；The nanofiber diameter of layers of nanofibers is 0.5 μm, and nanofiber grammes per square metre is
60.2g/m2, porosity 90%；Air purifier is 2000V with electret nanofiber filtration material Surface electrostatic potential, hydrophobic
Angle is 190 °, to the filter efficiency of 0.006~1 μm of particle up to 88.2%, pressure drag 15Pa, dust containing capacity 50g/m2, protect
It is undamped to deposit a month charge.
Comparative example 1
A kind of preparation method of air purifier electret nanofiber filtration material, specific steps and 1 base of embodiment
This is identical, the difference is that the flash cure process without step (2), will directly carry out quiet dissolved with the liquid mixture of polymer
The filtering material is made in instantaneous temperature reduction after fiber obtained by Electrospun is received with fiber base material, final Nanofiber filter material obtained
Electret effect, that is, strainability of material is poor, Surface electrostatic potential 1200V, and hydrophobic angle is 100 °, to 0.006~1 μm of
The filter efficiency of grain is 45%, pressure drag 24Pa, saves 3 days charge decay 40%, hence it is evident that receive lower than electret prepared by the present invention
Rice fiber filter material.Compared with the filtering material made from the embodiment of the present invention 1, air purifier of the present invention electret Nanowire
The filtering material electret effect that dimensional filter material is prepared is good, has excellent performance, and charge decay is slow, great application prospect.
Embodiment 2~24
A kind of preparation method of air purifier electret nanofiber filtration material, specific steps and embodiment 1 one
Cause, unlike step (1) when preparing the liquid mixture dissolved with polymer the type of selected polymer and solvent and
The performance of final product obtained, specifically see the table below, and in table, A indicates that Surface electrostatic potential, B indicate the particle to 0.006~1 μm
Filter efficiency, fibre diameter unit be μm, aperture size unit be μm；The nanofiber diameter unit of layers of nanofibers is μ
M, nanofiber grammes per square metre unit are g/m2, porosity unit is %；A unit is V, and hydrophobic angular unit is (°), and B unit is %, pressure
Resistance unit is Pa, and dust containing capacity unit is g/m2:
Embodiment 25
A kind of preparation method of air purifier electret nanofiber filtration material, the specific steps of which are as follows:
(1) it prepares the liquid mixture dissolved with polymer: Kynoar being added in N-Methyl pyrrolidone, is used in combination
Magnetic stirring apparatus continuously stirs 18h；
(2) electrostatic spinning is carried out after the liquid mixture dissolved with polymer that mass concentration is 36% being heated to 85 DEG C,
Rapid curing is carried out to the liquid mixture dissolved with polymer of spinneret orifice during electrostatic spinning, wherein rapid curing refers to
The liquid mixture dissolved with polymer is set to be warming up to 220 DEG C in 0.1ms at die orifice exit 4cm, the technique of electrostatic spinning
Parameter are as follows: voltage 20KV, receiving distance is 10cm, and rate of flooding 5.2mL/h, temperature is 15 DEG C, humidity 60%；
(3) instantaneous temperature reduction is used to 0 DEG C hereinafter, air purifier is made after fiber obtained by electrostatic spinning is received with reception substrate
Electret nanofiber filtration material, wherein the mode of instantaneous temperature reduction is that a liquid nitrogen perseverance is equipped at the back side 1mm for receiving substrate
Fast release device, the rate of release of liquid nitrogen constant release device are 60L/min, and it is 5mNm, grammes per square metre that reception substrate, which is stiffness,
400g/m2, corrugation depth is the wood pulp cellulose filter paper of 0.1mm.
The air purifier as made from above-mentioned preparation method with electret nanofiber filtration material be fiber between without adhesion and
Fluffy three-dimensional netted interworking architecture, including substrate layer and layers of nanofibers；Substrate layer is porous wood pulp cellulose substrate,
Fibre diameter is 20 μm, and aperture size is 80 μm；The nanofiber diameter of layers of nanofibers is 0.7 μm, and nanofiber grammes per square metre is
0.08g/m2, porosity 85.0%；Air purifier is 1900V with electret nanofiber filtration material Surface electrostatic potential, is dredged
Water angle is 160 °, to the filter efficiency of 0.006~1 μm of particle up to 50%, pressure drag 10Pa, dust containing capacity 1200g/m2,
It is undamped to save a month charge.
Embodiment 26
A kind of preparation method of air purifier electret nanofiber filtration material, the specific steps of which are as follows:
(1) it prepares the liquid mixture dissolved with polymer: Kynoar being added in dimethyl acetamide, and uses magnetic
Power agitating device continuously stirs 5h；
(2) electrostatic spinning is carried out after the liquid mixture dissolved with polymer that mass concentration is 12% being heated to 30 DEG C,
Rapid curing is carried out to the liquid mixture dissolved with polymer of spinneret orifice during electrostatic spinning, wherein rapid curing refers to
The liquid mixture dissolved with polymer is set to be warming up to 170 DEG C in 0.9ms at die orifice exit 5cm, the technique of electrostatic spinning
Parameter are as follows: voltage 15KV, receiving distance is 28cm, and rate of flooding 10mL/h, temperature is 30 DEG C, humidity 5%；
(3) instantaneous temperature reduction is used to 0 DEG C hereinafter, air purifier is made after fiber obtained by electrostatic spinning is received with reception substrate
Electret nanofiber filtration material, wherein the mode of instantaneous temperature reduction is that a liquid nitrogen perseverance is equipped at the back side 60mm for receiving substrate
Fast release device, the rate of release of liquid nitrogen constant release device are 90L/min, and it is 5mNm, grammes per square metre that reception substrate, which is stiffness,
100g/m2, corrugation depth is the wood pulp cellulose filter paper of 2.5mm.
The air purifier as made from above-mentioned preparation method with electret nanofiber filtration material be fiber between without adhesion and
Fluffy three-dimensional netted interworking architecture, including substrate layer and layers of nanofibers；Substrate layer is porous wood pulp cellulose substrate,
Fibre diameter is 28 μm, and aperture size is 100 μm；The nanofiber diameter of layers of nanofibers is 0.5 μm, and nanofiber grammes per square metre is
0.15g/m2, porosity 83%；Air purifier is 2100V with electret nanofiber filtration material Surface electrostatic potential, hydrophobic
Angle is 200 °, to the filter efficiency of 0.006~1 μm of particle up to 60.8%, pressure drag 19Pa, dust containing capacity 100g/m2, protect
It is undamped to deposit a month charge.
Embodiment 27
A kind of preparation method of air purifier electret nanofiber filtration material, the specific steps of which are as follows:
(1) it prepares the liquid mixture dissolved with polymer: Kynoar being added in triethyl phosphate, and uses magnetic force
Agitating device continuously stirs 3h；
(2) electrostatic spinning is carried out after the liquid mixture dissolved with polymer that mass concentration is 10% being heated to 100 DEG C,
Rapid curing is carried out to the liquid mixture dissolved with polymer of spinneret orifice during electrostatic spinning, wherein rapid curing refers to
The liquid mixture dissolved with polymer is set to be warming up to 230 DEG C in 0.5ms at die orifice exit 5cm, the technique of electrostatic spinning
Parameter are as follows: voltage 5KV, receiving distance is 3cm, and rate of flooding 0.5mL/h, temperature is 35 DEG C, humidity 62%；
(3) instantaneous temperature reduction is used to 0 DEG C hereinafter, air purifier is made after fiber obtained by electrostatic spinning is received with reception substrate
Electret nanofiber filtration material, wherein the mode of instantaneous temperature reduction is that a liquid nitrogen perseverance is equipped at the back side 90mm for receiving substrate
Fast release device, the rate of release of liquid nitrogen constant release device are 1L/min, and it is 2.5mNm, grammes per square metre that reception substrate, which is stiffness,
8g/m2Wood pulp cellulose non-woven cloth.
The air purifier as made from above-mentioned preparation method with electret nanofiber filtration material be fiber between without adhesion and
Fluffy three-dimensional netted interworking architecture, including substrate layer and layers of nanofibers；Substrate layer is porous wood pulp cellulose substrate,
Fibre diameter is 30 μm, and aperture size is 3 μm；The nanofiber diameter of layers of nanofibers is 0.8 μm, and nanofiber grammes per square metre is
23.8g/m2, porosity 92%；Air purifier is 1700V with electret nanofiber filtration material Surface electrostatic potential, hydrophobic
Angle is 175 °, to the filter efficiency of 0.006~1 μm of particle up to 99.2%, pressure drag 19Pa, dust containing capacity 300g/m2, protect
It is undamped to deposit a month charge.
Embodiment 28
A kind of preparation method of air purifier electret nanofiber filtration material, the specific steps of which are as follows:
(1) it prepares the liquid mixture dissolved with polymer: Kynoar being added in dimethyl sulfoxide, and uses magnetic force
Agitating device continuously stirs 17h；
(2) electrostatic spinning is carried out after the liquid mixture dissolved with polymer that mass concentration is 3% being heated to 55 DEG C,
Rapid curing is carried out to the liquid mixture dissolved with polymer of spinneret orifice during electrostatic spinning, wherein rapid curing is to instigate
218 DEG C are warming up in 0.8ms at die orifice exit 3.5cm dissolved with the liquid mixture of polymer, the technique of electrostatic spinning
Parameter are as follows: voltage 35KV, receiving distance is 32cm, and rate of flooding 0.1mL/h, temperature is 15 DEG C, humidity 48%；
(3) instantaneous temperature reduction is used to 0 DEG C hereinafter, air purifier is made after fiber obtained by electrostatic spinning is received with reception substrate
Electret nanofiber filtration material, wherein the mode of instantaneous temperature reduction is that a liquid nitrogen perseverance is equipped at the back side 60mm for receiving substrate
Fast release device, the rate of release of liquid nitrogen constant release device are 100L/min, and it is 4mNm that reception substrate, which is stiffness, and grammes per square metre is
6g/m2, corrugation depth is the corrugation filter paper of the containing cellulose fiber of 1mm.
The air purifier as made from above-mentioned preparation method with electret nanofiber filtration material be fiber between without adhesion and
Fluffy three-dimensional netted interworking architecture, including substrate layer and layers of nanofibers；Substrate layer is porous fiber base material, and fiber is straight
Diameter is 10 μm, and aperture size is 40 μm；The nanofiber diameter of layers of nanofibers is 0.8 μm, and nanofiber grammes per square metre is 70g/m2,
Porosity is 80%；Air purifier is 2300V with electret nanofiber filtration material Surface electrostatic potential, and hydrophobic angle is 190 °,
To the filter efficiency of 0.006~1 μm of particle up to 99.999%, pressure drag 8Pa, dust containing capacity 3600g/m2, save one
Month charge is undamped.
Embodiment 29~49
A kind of preparation method of air purifier electret nanofiber filtration material, specific steps and embodiment 28 1
Cause, unlike step (1) when preparing the liquid mixture dissolved with polymer the type of selected polymer and solvent and
The performance of final product obtained, specifically see the table below, and in table, A indicates that Surface electrostatic potential, B indicate the particle to 0.006~1 μm
Filter efficiency, fibre diameter unit be μm, aperture size unit be μm；The nanofiber diameter unit of layers of nanofibers is μ
M, nanofiber grammes per square metre unit are g/m2, porosity unit is %；A unit is V, and hydrophobic angular unit is (°), and B unit is %, pressure
Resistance unit is Pa, and dust containing capacity unit is g/m2:
Embodiment 50
A kind of preparation method of air purifier electret nanofiber filtration material, the specific steps of which are as follows:
(1) it prepares the liquid mixture dissolved with polymer: nylon 6 being added in formic acid, and is connected with magnetic stirring apparatus
Continuous stirring 6h；
(2) electrostatic spinning is carried out after the liquid mixture dissolved with polymer that mass concentration is 33% being heated to 120 DEG C,
Rapid curing is carried out to the liquid mixture dissolved with polymer of spinneret orifice during electrostatic spinning, wherein rapid curing refers to
The liquid mixture dissolved with polymer is set to be warming up to 170 DEG C in 0.9ms at die orifice exit 4cm, the technique of electrostatic spinning
Parameter are as follows: voltage 70KV, receiving distance is 40cm, and rate of flooding 5mL/h, temperature is 30 DEG C, humidity 90%；
(3) instantaneous temperature reduction is used to 0 DEG C hereinafter, air purifier is made after fiber obtained by electrostatic spinning is received with reception substrate
Electret nanofiber filtration material, wherein the mode of instantaneous temperature reduction is that a liquid nitrogen is equipped at the back side 100mm for receiving substrate
Constant release device, the rate of release of liquid nitrogen constant release device are 20L/min, and it is 0.5mNm that reception substrate, which is stiffness, gram
Weight is 350g/m2The non-woven cloth containing polyester fiber.
The air purifier as made from above-mentioned preparation method with electret nanofiber filtration material be fiber between without adhesion and
Fluffy three-dimensional netted interworking architecture, including substrate layer and layers of nanofibers；Substrate layer is porous fiber base material, and fiber is straight
Diameter is 40 μm, and aperture size is 10 μm；The nanofiber diameter of layers of nanofibers is 0.6 μm, and nanofiber grammes per square metre is 0.88g/
m2, porosity 84%；Air purifier is 1800V with electret nanofiber filtration material Surface electrostatic potential, and hydrophobic angle is
180 °, to the filter efficiency of 0.006~1 μm of particle up to 92.558%, pressure drag 10Pa, dust containing capacity 1000g/m2, protect
It is undamped to deposit a month charge.
Embodiment 51
A kind of preparation method of air purifier electret nanofiber filtration material, the specific steps of which are as follows:
(1) it prepares the liquid mixture dissolved with polymer: polyvinyl alcohol being added to the water, and is connected with magnetic stirring apparatus
Continuous stirring 8h；
(2) electrostatic spinning is carried out after the liquid mixture dissolved with polymer that mass concentration is 20% being heated to 110 DEG C,
Rapid curing is carried out to the liquid mixture dissolved with polymer of spinneret orifice during electrostatic spinning, wherein rapid curing refers to
The liquid mixture dissolved with polymer is set to be warming up to 165 DEG C in 0.3ms at die orifice exit 4cm, the technique of electrostatic spinning
Parameter are as follows: voltage 60KV, receiving distance is 5cm, and rate of flooding 0.1mL/h, temperature is 20 DEG C, humidity 63%；
(3) instantaneous temperature reduction is used to 0 DEG C hereinafter, air purifier is made after fiber obtained by electrostatic spinning is received with reception substrate
Electret nanofiber filtration material, wherein the mode of instantaneous temperature reduction is that a liquid nitrogen perseverance is equipped at the back side 50mm for receiving substrate
Fast release device, the rate of release of liquid nitrogen constant release device are 10L/min, and it is 5mNm that reception substrate, which is stiffness, and grammes per square metre is
200g/m2The non-woven cloth containing polyolefine fiber.
The air purifier as made from above-mentioned preparation method with electret nanofiber filtration material be fiber between without adhesion and
Fluffy three-dimensional netted interworking architecture, including substrate layer and layers of nanofibers；Substrate layer is porous fiber base material, and fiber is straight
Diameter is 50 μm, and aperture size is 3 μm；The nanofiber diameter of layers of nanofibers is 0.7 μm, and nanofiber grammes per square metre is 0.01g/
m2, porosity 91%；Air purifier is 1700V with electret nanofiber filtration material Surface electrostatic potential, and hydrophobic angle is
175 °, to the filter efficiency of 0.006~1 μm of particle up to 50.88%, pressure drag 10Pa, dust containing capacity 3200g/m2, save
Charge is undamped within one month.
Embodiment 52
A kind of preparation method of air purifier electret nanofiber filtration material, the specific steps of which are as follows:
(1) it prepares the liquid mixture dissolved with polymer: polyvinyl alcohol being added in ethyl alcohol, and uses magnetic stirring apparatus
Continuously stir 18h；
(2) electrostatic spinning is carried out after the liquid mixture dissolved with polymer that mass concentration is 31% being heated to 50 DEG C,
Rapid curing is carried out to the liquid mixture dissolved with polymer of spinneret orifice during electrostatic spinning, wherein rapid curing refers to
The liquid mixture dissolved with polymer is set to be warming up to 220 DEG C in 0.2ms at die orifice exit 5cm, the technique of electrostatic spinning
Parameter are as follows: voltage 40KV, receiving distance is 40cm, and rate of flooding 2mL/h, temperature is 30 DEG C, humidity 5%；
(3) instantaneous temperature reduction is used to 0 DEG C hereinafter, air purifier is made after fiber obtained by electrostatic spinning is received with reception substrate
Electret nanofiber filtration material, wherein the mode of instantaneous temperature reduction is that a liquid nitrogen perseverance is equipped at the back side 80mm for receiving substrate
Fast release device, the rate of release of liquid nitrogen constant release device are 35L/min；It is 2.5mNm, grammes per square metre that reception substrate, which is stiffness,
For 95g/m2, the corrugation filter paper and stiffness for the containing cellulose fiber that corrugation depth is 3mm are 2.5mNm, grammes per square metre 120g/m2's
The composite fibre substrate of non-woven fabric of polyester fiber composition.
The air purifier as made from above-mentioned preparation method with electret nanofiber filtration material be fiber between without adhesion and
Fluffy three-dimensional netted interworking architecture, including substrate layer and layers of nanofibers；Substrate layer is porous mixed fiber base material,
Fibre diameter is 28 μm, and aperture size is 55 μm；The nanofiber diameter of layers of nanofibers is 0.5 μm, and nanofiber grammes per square metre is
0.08g/m2, porosity 81%；Air purifier is 1900V with electret nanofiber filtration material Surface electrostatic potential, hydrophobic
Angle is 160 °, to the filter efficiency of 0.006~1 μm of particle up to 84.21%, pressure drag 12Pa, dust containing capacity 2000g/m2,
It is undamped to save a month charge.
Embodiment 53~83
A kind of preparation method of air purifier electret nanofiber filtration material, specific steps and embodiment 52 1
Cause, unlike step (1) when preparing the liquid mixture dissolved with polymer the type of selected polymer and solvent and
The performance of final product obtained, specifically see the table below, and in table, A indicates that Surface electrostatic potential, B indicate the particle to 0.006~1 μm
Filter efficiency, fibre diameter unit be μm, aperture size unit be μm；The nanofiber diameter unit of layers of nanofibers is μ
M, nanofiber grammes per square metre unit are g/m2, porosity unit is %；A unit is V, and hydrophobic angular unit is (°), and B unit is %, pressure
Resistance unit is Pa, and dust containing capacity unit is g/m2:
Embodiment 84
A kind of preparation method of air purifier electret nanofiber filtration material, the specific steps of which are as follows:
(1) it prepares the liquid mixture dissolved with polymer: polyvinyl alcohol being added in n,N-Dimethylformamide, is used in combination
Magnetic stirring apparatus continuously stirs 20h；
(2) electrostatic spinning is carried out after the liquid mixture dissolved with polymer that mass concentration is 40% being heated to 75 DEG C,
Rapid curing is carried out to the liquid mixture dissolved with polymer of spinneret orifice during electrostatic spinning, wherein rapid curing refers to
The liquid mixture dissolved with polymer is set to be warming up to 155 DEG C in 0.6ms at die orifice exit 4.5cm, the work of electrostatic spinning
Skill parameter are as follows: voltage 70KV, receiving distance is 30cm, and rate of flooding 10mL/h, temperature is 15 DEG C, humidity 12%；
(3) instantaneous temperature reduction is used to 0 DEG C hereinafter, air purifier is made after fiber obtained by electrostatic spinning is received with reception substrate
Electret nanofiber filtration material, wherein the mode of instantaneous temperature reduction is that a liquid nitrogen is equipped at the back side 100mm for receiving substrate
Constant release device, the rate of release of liquid nitrogen constant release device are 1L/min；It is 1.5mNm, grammes per square metre that reception substrate, which is stiffness,
For 80g/m2, the corrugation filter paper and stiffness for the containing cellulose fiber that corrugation depth is 0.1mm are 4.0mNm, grammes per square metre 200g/m2
Polyolefine fiber non-woven cloth composition composite fibre substrate.
The air purifier as made from above-mentioned preparation method with electret nanofiber filtration material be fiber between without adhesion and
Fluffy three-dimensional netted interworking architecture, including substrate layer and layers of nanofibers；Substrate layer is porous mixed fiber base material,
Fibre diameter is 15 μm, and aperture size is 42 μm；The nanofiber diameter of layers of nanofibers is 0.6 μm, and nanofiber grammes per square metre is
50.0g/m2, porosity 80%；Air purifier is 2100V with electret nanofiber filtration material Surface electrostatic potential, hydrophobic
Angle is 190 °, to the filter efficiency of 0.006~1 μm of particle up to 50%, pressure drag 3Pa, dust containing capacity 50g/m2, save one
Charge is undamped within a month.
Embodiment 85
A kind of preparation method of air purifier electret nanofiber filtration material, the specific steps of which are as follows:
(1) it prepares the liquid mixture dissolved with polymer: polyvinyl alcohol being added in tetrahydrofuran, and uses magnetic agitation
Device continuously stirs 4h；
(2) electrostatic spinning is carried out after the liquid mixture dissolved with polymer that mass concentration is 14% being heated to 90 DEG C,
Rapid curing is carried out to the liquid mixture dissolved with polymer of spinneret orifice during electrostatic spinning, wherein rapid curing refers to
The liquid mixture dissolved with polymer is set to be warming up to 170 DEG C in 0.9ms at die orifice exit 5cm, the technique of electrostatic spinning
Parameter are as follows: voltage 10KV, receiving distance is 3cm, and rate of flooding 10mL/h, temperature is 25 DEG C, humidity 30%；
(3) instantaneous temperature reduction is used to 0 DEG C hereinafter, air purifier is made after fiber obtained by electrostatic spinning is received with reception substrate
Electret nanofiber filtration material, wherein the mode of instantaneous temperature reduction is that a liquid nitrogen perseverance is equipped at the back side 50mm for receiving substrate
Fast release device, the rate of release of liquid nitrogen constant release device are 100L/min；It is 3mNm that reception substrate, which is stiffness, and grammes per square metre is
310g/m2, the corrugation filter paper and stiffness for the containing cellulose fiber that corrugation depth is 2.4mm are 1mNm, grammes per square metre 300g/m2's
Polyolefine fiber non-woven cloth and stiffness are 0.5mNm, grammes per square metre 350g/m2Non-woven fabric of polyester fiber composition it is mixed
Condensating fiber substrate.
The air purifier as made from above-mentioned preparation method with electret nanofiber filtration material be fiber between without adhesion and
Fluffy three-dimensional netted interworking architecture, including substrate layer and layers of nanofibers；Substrate layer is porous mixed fiber base material,
Fibre diameter is 20 μm, and aperture size is 8 μm；The nanofiber diameter of layers of nanofibers is 0.5 μm, and nanofiber grammes per square metre is
33.8g/m2, porosity 80%；Air purifier is 2200V with electret nanofiber filtration material Surface electrostatic potential, hydrophobic
Angle is 210 °, to the filter efficiency of 0.006~1 μm of particle up to 96.5%, pressure drag 15Pa, dust containing capacity 100/m2, protect
It is undamped to deposit a month charge.
Embodiment 86
A kind of preparation method of air purifier electret nanofiber filtration material, specific steps and 85 base of embodiment
This is consistent, contains inorganic nanoparticles, process for preparation in the liquid mixture dissolved with polymer that different steps (1) is prepared
Are as follows: first silica is added in tetrahydrofuran, ultrasonic 15h, then by prepare with embodiment 94 obtain dissolved with polymer
Liquid mixture is added thereto, and continuously stirs 3h with magnetic stirring apparatus, and wherein the content of silica in the solution is poly- second
Enol and silica total amount 5.8wt%.
The air purifier as made from above-mentioned preparation method with electret nanofiber filtration material be fiber between without adhesion and
Fluffy three-dimensional netted interworking architecture, including substrate layer and layers of nanofibers；Substrate layer is porous mixed fiber base material,
Fibre diameter is 40 μm, and aperture size is 100 μm；The nanofiber diameter of layers of nanofibers is 0.5 μm, and nanofiber grammes per square metre is
1.8g/m2, porosity 88%；Air purifier is 1800V, hydrophobic angle with electret nanofiber filtration material Surface electrostatic potential
It is 160 °, to the filter efficiency of 0.006~1 μm of particle up to 60%, pressure drag 19Pa, dust containing capacity 3300g/m2, save
Charge is undamped within one month.
Embodiment 87
A kind of preparation method of air purifier electret nanofiber filtration material, specific steps and 85 base of embodiment
This is consistent, contains inorganic nanoparticles, process for preparation in the liquid mixture dissolved with polymer that different steps (1) is prepared
Are as follows: first by aluminum oxide be added tetrahydrofuran in, ultrasonic 0.5h, then by with embodiment 94 prepare obtain dissolved with polymer
Liquid mixture be added thereto, continuously stir 3h with magnetic stirring apparatus, wherein the content of aluminum oxide in the solution is
Polyvinyl alcohol and aluminum oxide total amount 0.1wt%.
The air purifier as made from above-mentioned preparation method with electret nanofiber filtration material be fiber between without adhesion and
Fluffy three-dimensional netted interworking architecture, including substrate layer and layers of nanofibers；Substrate layer is porous mixed fiber base material,
Fibre diameter is 33 μm, and aperture size is 95 μm；The nanofiber diameter of layers of nanofibers is 0.8 μm, and nanofiber grammes per square metre is
40.8g/m2, porosity 84%；Air purifier is 1700V with electret nanofiber filtration material Surface electrostatic potential, hydrophobic
Angle is 200 °, to the filter efficiency of 0.006~1 μm of particle up to 90.59%, pressure drag 5Pa, dust containing capacity 2500g/m2,
It is undamped to save a month charge.
Embodiment 88
A kind of preparation method of air purifier electret nanofiber filtration material, specific steps and 85 base of embodiment
This is consistent, contains inorganic nanoparticles, process for preparation in the liquid mixture dissolved with polymer that different steps (1) is prepared
Are as follows: first zinc oxide is added in tetrahydrofuran, ultrasonic 5h, then will prepare the obtained liquid dissolved with polymer with embodiment 94
Mixture is added thereto, and continuously stirs 5h with magnetic stirring apparatus, wherein the content of zinc oxide in the solution be polyvinyl alcohol and
Zinc oxide total amount 10wt%.
The air purifier as made from above-mentioned preparation method with electret nanofiber filtration material be fiber between without adhesion and
Fluffy three-dimensional netted interworking architecture, including substrate layer and layers of nanofibers；Substrate layer is porous mixed fiber base material,
Fibre diameter is 27 μm, and aperture size is 120 μm；The nanofiber diameter of layers of nanofibers is 0.7 μm, and nanofiber grammes per square metre is
0.01g/m2, porosity 86%；Air purifier is 1900V with electret nanofiber filtration material Surface electrostatic potential, hydrophobic
Angle is 180 °, to the filter efficiency of 0.006~1 μm of particle up to 63.999%, pressure drag 11Pa, dust containing capacity 50g/m2,
It is undamped to save a month charge.
Embodiment 89~97
A kind of preparation method of air purifier electret nanofiber filtration material, specific steps and 88 base of embodiment
This is consistent, the difference is that preparing the type and final system dissolved with the inorganic nanoparticles being added in the liquid mixture of polymer
The performance of the product obtained, specifically see the table below, and in table, A indicates that Surface electrostatic potential, B indicate the filtering to 0.006~1 μm of particle
Efficiency, fibre diameter unit be μm, aperture size unit be μm；The nanofiber diameter unit of layers of nanofibers be μm, nanometer
Fiber grammes per square metre unit is g/m2, porosity unit is %；A unit is V, and hydrophobic angular unit is (°), and B unit is %, pressure drag unit
For Pa, dust containing capacity unit is g/m2:
Embodiment 98
A kind of preparation method of air purifier electret nanofiber filtration material, the specific steps of which are as follows:
(1) it prepares the liquid mixture dissolved with polymer: polyvinyl alcohol being added in tetrahydrofuran, and uses magnetic agitation
Device continuously stirs 4h；
(2) electrostatic spinning is carried out after the liquid mixture dissolved with polymer that mass concentration is 14% being heated to 90 DEG C,
Rapid curing is carried out to the liquid mixture dissolved with polymer of spinneret orifice during electrostatic spinning, wherein rapid curing refers to
The liquid mixture dissolved with polymer is set to be warming up to 170 DEG C in 0.9ms at die orifice exit 5cm, the technique of electrostatic spinning
Parameter are as follows: voltage 10KV, receiving distance is 3cm, and rate of flooding 10mL/h, temperature is 25 DEG C, humidity 30%；
(3) air purifier electret Nanofiber filter material is made after being received with reception substrate in fiber obtained by electrostatic spinning
Material；It is 3mNm, grammes per square metre 310g/m that reception substrate, which is stiffness,2, corrugation depth is the corrugation filter of the containing cellulose fiber of 2.1mm
Paper and stiffness are 1mNm, grammes per square metre 300g/m2Polyolefine fiber non-woven cloth and stiffness be 0.1mNm, grammes per square metre is
350g/m2Non-woven fabric of polyester fiber composition composite fibre substrate.
The air purifier as made from above-mentioned preparation method with electret nanofiber filtration material be fiber between without adhesion and
Fluffy three-dimensional netted interworking architecture, including substrate layer and layers of nanofibers；Substrate layer is porous mixed fiber base material,
Fibre diameter is 20 μm, and aperture size is 8 μm；The nanofiber diameter of layers of nanofibers is 0.5 μm, and nanofiber grammes per square metre is
33.8g/m2, porosity 80%；Air purifier is 2100V with electret nanofiber filtration material Surface electrostatic potential, hydrophobic
Angle is 200 °, to the filter efficiency of 0.006~1 μm of particle up to 92.5%, pressure drag 10Pa, dust containing capacity 90/m2, save
Charge is undamped within one month.
Embodiment 99
A kind of preparation method of air purifier electret nanofiber filtration material, specific steps and 1 base of embodiment
This is consistent, the difference is that the performance of quick-setting mode and final product obtained, rapid curing is made dissolved with polymer
Liquid mixture -40 DEG C are cooled in 0.3ms at die orifice exit 3cm, final obtained air purifier electret
Nanofiber filtration material Surface electrostatic potential is 2200V, and hydrophobic angle is 200 °, can to the filter efficiency of 0.006~1 μm of particle
Up to 88.5%, pressure drag 16Pa, dust containing capacity 60g/m2, it is undamped to save a month charge.
Embodiment 100~122
A kind of preparation method of air purifier electret nanofiber filtration material, specific steps and embodiment 99 1
Cause, unlike step (1) when preparing the liquid mixture dissolved with polymer the type of selected polymer and solvent and
The performance of final product obtained, specifically see the table below, and in table, A indicates that Surface electrostatic potential, B indicate the particle to 0.006~1 μm
Filter efficiency, fibre diameter unit be μm, aperture size unit be μm；The nanofiber diameter unit of layers of nanofibers is μ
M, nanofiber grammes per square metre unit are g/m2, porosity unit is %；A unit is V, and hydrophobic angular unit is (°), and B unit is %, pressure
Resistance unit is Pa, and dust containing capacity unit is g/m2:
Embodiment 123
A kind of preparation method of air purifier electret nanofiber filtration material, specific steps and 1 base of embodiment
This is consistent, the difference is that the performance of quick-setting mode and final product obtained, rapid curing is made dissolved with polymer
Liquid mixture 80 DEG C are warming up in 0.1ms at die orifice exit 3cm, at die orifice exit 10cm in 0.9ms
125 DEG C are warming up to, final air purifier obtained is 2100V with electret nanofiber filtration material Surface electrostatic potential, hydrophobic
Angle is 160 °, to the filter efficiency of 0.006~1 μm of particle up to 85%, pressure drag 16Pa, dust containing capacity 50g/m2, save
Charge is undamped within one month.
Embodiment 124~146
A kind of preparation method of air purifier electret nanofiber filtration material, specific steps and embodiment 123
Unanimously, step (1) prepares the type of polymer and solvent selected when the liquid mixture dissolved with polymer, rank unlike
The performance of the temperature of Duan Shengwen and final product obtained, specifically see the table below, and in table, T1 (DEG C) indicates the temperature of first segment heating
Degree, T2 (DEG C) indicate the temperature of second segment heating, and A indicates that Surface electrostatic potential, B indicate that the filtering to 0.006~1 μm of particle is imitated
Rate, fibre diameter unit be μm, aperture size unit be μm；The nanofiber diameter unit of layers of nanofibers be μm, Nanowire
Dimension grammes per square metre unit is g/m2, porosity unit is %；A unit is V, and hydrophobic angular unit is (°), and B unit is %, and pressure drag unit is
Pa, dust containing capacity unit are g/m2:
Claims (8)
1. a kind of air purifier preparation method of electret nanofiber filtration material, it is characterized in that: to dissolved with polymer
Liquid mixture carries out electrostatic spinning and obtains air purifier electret nanofiber filtration material, during electrostatic spinning
Quickly be heating and curing to the liquid mixture dissolved with polymer of die orifice exit, be quickly cooled down solidification or fast phase add
Heat cure；Described be quickly heating and curing refer to and be warming up to T1 in 0.1~0.9ms at 3~5cm of die orifice exit, T1 >=molten
Have a boiling point t of solvent in the liquid mixture of polymer, the rapid cooling solidification refer at 3~5cm of die orifice exit
Be cooled to -40~-20 DEG C in 0.1~0.9ms, the fast phase be heating and curing refer at 3~5cm of die orifice exit
It is warming up in 0.1~0.9ms after T2 and is warming up to T3 in 0.1~0.9ms at 9~10cm of die orifice exit, t/2+5 DEG C >=T2
>=t/2-5 DEG C, 3/4*t+10 DEG C >=T3 >=3/4*t-10 DEG C.
2. a kind of preparation method of air purifier electret nanofiber filtration material according to claim 1, special
Sign is, the technological parameter of the electrostatic spinning are as follows: dissolved with 30~120 DEG C of liquid mixture temperature of polymer, voltage 5~
70KV, receive 3~40cm of distance, 0.1~10mL/h of rate of flooding, 15~35 DEG C of environment temperature, humidity 5~90%；It is described molten
The mass concentration for having polymer in the liquid mixture of polymer is 3~40%.
3. a kind of preparation method of air purifier electret nanofiber filtration material according to claim 2, special
Sign is that fiber made from electrostatic spinning carries out instantaneous temperature reduction processing after being received with reception substrate, and the instantaneous temperature reduction refers to institute
With when receiving at a distance from substrate less than 1mm, nanofiber reduces within the time less than 5s spinning nano fibre after contacting with liquid nitrogen
To 0 DEG C or less；The instantaneous temperature reduction is that a liquid nitrogen is arranged at 1~100mm of substrate by receiving in the back side distance for receiving substrate
What constant release device was realized, the rate of release of the liquid nitrogen constant release device is 1~100L/min.
4. a kind of preparation method of air purifier electret nanofiber filtration material according to claim 3, special
Sign is that the polymer in the liquid mixture dissolved with polymer is polytetrafluoroethylene (PTFE), FEP fluorinated ethylene propylene copolymer, gathers entirely
Fluorine second propylene, polypropylene, soluble poly tetrafluoroethene, Kynoar, polystyrene, polybutylene terephthalate, polyester,
Polyvinyl acetate, nylon 6, polystyrene, polyvinyl alcohol, polymethyl methacrylate, polyaniline, polyethylene glycol oxide, polyethylene
Pyrrolidones, polycaprolactone, polyethylene terephthalate, polyethylene glycol, polyurethane, polysulfones, polyether sulfone, gathers polyacrylonitrile
Biasfluoroethylene-hexafluoropropylene, Kynoar-tetrafluoroethylene-perfluoro methyl vinyl ether, Kynoar-chlorotrifluoroethylene
And in the above polymer any two or three of polymer mixture；It is wherein described dissolved in the liquid mixture of polymer
Solvent respectively corresponded according to type of polymer are as follows:
Kynoar: N,N-dimethylformamide, N-Methyl pyrrolidone, dimethyl acetamide, triethyl phosphate or diformazan
Base sulfoxide；
Polypropylene: normal heptane, tetrahydro fluoronaphthalene or dimethylbenzene；
Polybutylene terephthalate: methylene chloride, tetrahydrofuran, chloroform or acetone；
Polyethylene terephthalate: methylene chloride, tetrahydrofuran, chloroform or acetone；
Polyarylate: methylene chloride, tetrahydrofuran, chloroform or acetone；
Polyvinyl acetate: toluene, acetone, ethyl alcohol, acetic acid, ethyl acetate or chloroform；
Nylon 6: formic acid；
Polyvinyl alcohol: water, ethyl alcohol, N,N-dimethylformamide or tetrahydrofuran；
Polymethyl methacrylate: chloroform, acetic acid, ethyl acetate, acetone or toluene；
Polyaniline: N,N-dimethylformamide or N-Methyl pyrrolidone；
Polyethylene glycol oxide: N,N-dimethylformamide, ethyl alcohol, water or chloroform；
Polyvinylpyrrolidone: water, ethyl alcohol, DMAC N,N' dimethyl acetamide or N,N-dimethylformamide；
Polyacrylonitrile: N,N-dimethylformamide or dimethyl sulfoxide；
Polycaprolactone: N,N-dimethylformamide or acetone；
Polyethylene glycol: water, ethyl alcohol or N,N-dimethylformamide；
Polyurethane: N,N-dimethylformamide, acetone or N-Methyl pyrrolidone；
Fluorinated polyurethane: N,N-dimethylformamide, acetone or N-Methyl pyrrolidone；
Polysulfones and polyether sulfone: N,N-dimethylformamide, acetone, N-Methyl pyrrolidone, dimethyl acetamide or tetrahydrofuran；
Kynoar-hexafluoropropene: N,N-dimethylformamide, N-Methyl pyrrolidone, dimethyl acetamide, tricresyl phosphate second
Ester or dimethyl sulfoxide；
Kynoar-tetrafluoroethylene-perfluoro methyl vinyl ether: N,N-dimethylformamide, N-Methyl pyrrolidone, diformazan
Yl acetamide, triethyl phosphate or dimethyl sulfoxide；
Kynoar-chlorotrifluoroethylene: N,N-dimethylformamide, N-Methyl pyrrolidone, dimethyl acetamide, tricresyl phosphate
Ethyl ester or dimethyl sulfoxide；
The mixture solvent for use of above-mentioned any two or three of polymer: all polymer can be dissolved in above-mentioned solvent simultaneously
The mixture of the solvent of single solvent or every kind of polymer；
Dissolved with the process for preparation of the liquid mixture of polymer are as follows: add a polymer in corresponding solvent, and stirred with magnetic force
It mixes device and continuously stirs 3~20h.
5. a kind of preparation method of air purifier electret nanofiber filtration material according to claim 4, special
Sign is, at least one inorganic nanoparticles, the inorganic nano are dispersed in the liquid mixture dissolved with polymer
Grain is silica, aluminum oxide, zinc oxide, barium monoxide, titanium dioxide, tantalum pentoxide, barium titanate, lead zirconate titanate, nitrogen
SiClx, tourmaline, boehmite or silsesquioxane, the additive amount of inorganic nanoparticles are the liquid mixture dissolved with polymer
0.1~10wt%.
6. a kind of preparation method of air purifier electret nanofiber filtration material according to claim 5, special
Sign is, it is described be quickly heating and curing, be quickly cooled down solidification or fast phase is heating and curing be by 3 above spinning nozzle~
Temperature control device I is installed, the place 9~10cm installation temperature control device II realization, the temperature of temperature control device I above the spinneret orifice at 5cm
It is -60~300 DEG C, the temperature of temperature control device II is 20~300 DEG C.
7. a kind of preparation method of air purifier electret nanofiber filtration material according to claim 6, special
Sign is that the reception substrate is wood pulp cellulose substrate, fiber base material or mixed fiber base material；
The wood pulp cellulose filter paper or wood pulp cellulose non-woven cloth that the wood pulp cellulose substrate is, stiffness be 0.5~
5mNm, grammes per square metre are 8~400g/m2；Wood pulp cellulose filter paper is the corrugation filter paper that corrugation depth is 0.1~3mm；
The fiber base material is the filter paper or non-woven cloth of containing cellulose fiber, polyester fiber or polyolefine fiber, and stiffness is
0.5~5mNm, grammes per square metre are 6~350g/m2；Filter paper is corrugation filter paper, wherein the corrugation depth of cellulose fibre corrugation filter paper
For 0.1~3mm；
The mixed fiber base material is the mixing of the two or more compositions in cellulose fibre, polyester fiber and polyolefine fiber
The filter paper or non-woven cloth of fiber, stiffness are 0.5~5mNm, and grammes per square metre is 6~350g/m2, the filter paper of the composite fibre
For corrugation filter paper, wherein the corrugation depth of the corrugation filter paper of containing cellulose fiber is 0.1~3mm.
8. using air purifier electret nanofiber mistake made from preparation method as described in any one of claims 1 to 7
Filter material material, it is characterized in that: the air purifier with electret nanofiber filtration material be fiber between without adhesion and fluffy three
Tie up netted interworking architecture, including substrate layer and layers of nanofibers；Substrate layer be porous wood pulp cellulose substrate, fiber base material or
Mixed fiber base material, fibre diameter are 10~50 μm, and aperture size is 3~120 μm；The nanofiber of layers of nanofibers is straight
Diameter is 0.5~0.8 μm, and nanofiber grammes per square metre is 0.01~70g/m2, porosity of=80%；The air purifier is received with electret
Rice fiber filter material Surface electrostatic potential is 1700~2300V, 150 ° of hydrophobic angle >, is imitated to the filtering of 0.006~1 μm of particle
Rate is 50~99.999%, and pressure drag is less than 20Pa, and dust containing capacity is 50~3600g/m2, air purifier electret Nanowire
One month charge of dimensional filter material preservation is undamped.
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