CN109367165A - A kind of LiNbO3/ PAN composite nano fiber electret haze window screening and preparation method thereof - Google Patents

A kind of LiNbO3/ PAN composite nano fiber electret haze window screening and preparation method thereof Download PDF

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Publication number
CN109367165A
CN109367165A CN201811052187.4A CN201811052187A CN109367165A CN 109367165 A CN109367165 A CN 109367165A CN 201811052187 A CN201811052187 A CN 201811052187A CN 109367165 A CN109367165 A CN 109367165A
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linbo
composite nano
nano fiber
pan
pan composite
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CN109367165B (en
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邵伟力
何建新
刘凡
周玉嫚
崔世忠
于书淳
王芳芳
李梦营
王琳琳
张景
李方
陶雪姣
翁凯
岳万里
陈元昆
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Zhongyuan University of Technology
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Zhongyuan University of Technology
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/022—Non-woven fabric
    • 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
    • B01D46/0027—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
    • B01D46/0036—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions by adsorption or absorption
    • 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
    • B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B9/047—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material made of fibres or filaments
    • 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
    • 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
    • D01F6/44—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
    • D01F6/54—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds of polymers of unsaturated nitriles
    • 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
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
    • D04H1/542—Adhesive fibres
    • D04H1/548—Acrylonitrile series
    • 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
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/52—Devices affording protection against insects, e.g. fly screens; Mesh windows for other purposes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0276—Polyester fibres
    • B32B2262/0284—Polyethylene terephthalate [PET] or polybutylene terephthalate [PBT]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/412—Transparent

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
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  • Dispersion Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Insects & Arthropods (AREA)
  • Pest Control & Pesticides (AREA)
  • Architecture (AREA)
  • Ceramic Engineering (AREA)
  • Civil Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Nonwoven Fabrics (AREA)
  • Artificial Filaments (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)

Abstract

The invention discloses a kind of LiNbO with high efficiency filter performance3/ PAN composite nano fiber electret haze window screening and preparation method thereof, the present invention include three layers of tunica fibrosa, and three layers of tunica fibrosa include sandwich layer, substrate and upper layer, and the sandwich layer is LiNbO3/ PAN composite nano fiber, the silver-plated macromolecule reticular structure of substrate, upper layer are black terylene non-woven fabrics, LiNbO3/ PAN composite nano fiber is adhered on silver-plated macromolecule reticular structure by electrostatic spinning and obtains being stained with LiNbO3The silver-plated reticular structure of/PAN composite nano fiber, is stained with LiNbO3The silver-plated reticular structure of/PAN composite nano fiber is by ultrasonic bonds on black terylene non-woven fabrics.The present invention prepares PAN/LiNbO by electrostatic spinning3Composite nano fiber, average diameter is in 100nm or so, and intensity is high, filter effect is good, is easy and macromolecule non-woven fabrics docile.

Description

A kind of LiNbO3/ PAN composite nano fiber electret haze window screening and its preparation Method
Technical field
The present invention relates to field of air filtration, and in particular to a kind of LiNbO3/ PAN composite nano fiber electret haze Window screening and preparation method thereof is applied to the fine particles such as filtering PM2.5.
Background technique
Many people know that haze is, but can cause huge harm without clear why to body haze Understanding.It is to be understood that haze is mainly to be made of air particles pollutant (particulate matter, PM), in environment PM aerodynamic diameter range be about 0.001-100um, wherein to respiratory tract injury it is maximum be aerodynamic diameter The fine particle PM2.5 of the pellet PM10 and≤2.5um of≤10 um, the main source of the two are dust, building Clast and the waste of dyestuff burning, industrial air emission etc., they carry the fungi, bacterium, disease being harmful to the human body The pernicious gases such as poison even sulfur dioxide, carbon monoxide, carbon dioxide.The particulate matters such as PM10, PM2.5 in haze carry thorn Property pernicious gas, bacterium, virus etc. are swashed as breathing enters the respiratory system, stimulates respiratory mucosa before this, generate inflammatory reaction； Secondly heavy metal, micronic dust etc. can be deposited on throat, bronchus, bronchioli terminales and alveolar even into body, influence to breathe System and health;Last winter is exactly the high-incidence season of respiratory tract infectious disease originally, and viral multi-pass crosses respiratory tract biography It broadcasts, and haze sky atmospheric density is big, medium is abundant, provides extremely convenient condition for viral transmission, so such as influenza, stream The respiratory infectious disease illness rate of row parotitis, varicella etc. is also just high.Common window screening does not have anti- Haze function, and electret electrostatic nanofiber haze window screening because its to PM2.5 filter efficiency can reach 85% or more thus by Extensive concern.
There is electret electrostatic nano-fiber material the advantages that filtration efficiency, lower resistance, the electret time is long to make it all Show one's talent in air filting material, electret filter material has become the hot spot of filtration art research.Traditional fiber mistake Filter material material is the interception that particulate matter is realized by the mechanism mechanism of fiber, however electret electrostatic nanofiber filtration material Electrostatic Absorption mode trap particulate matter is utilized.This allows for its filter efficiency and compares traditional filtering material greatly promoting.
Electret filter material is made by non-woven fabrics dry process for forming, such as meltblown etc..In dry-press process In technique, fiber can be made to charge by certain methods.The method of electrostatic electret mainly has method of electrostatic spinning, corona discharge at present Method, triboelectrification method, thermal poling method, low-energy electron beam blast technique, fibrillation tearing etc..It is prepared compared to existing electret fiber Technology, electrostatic spinning technique can utilize high-voltage electricity during high molecular material develops into solid fabric by fluid state solution Injection charge compared with traditional electret technology, is expected to mention in situ so as to keep the energy level depth of charge injection bigger for the effect of field The stability of electret effect after liter fiberizing, and a kind of mature technology that can prepare nanofibers.
Lithium niobate (LiNbO3, abbreviation LN) and crystal is colourless or yellowish transparent crystal, 1240 DEG C of fusing point, density is 4.70X103kg·m-3.Mohs' hardness is 6, ferroelectricity phase structure category point group 3m, two para-electric phase structure category point group 3m.LN crystal collection A variety of effects such as electric light, acousto-optic, photoelastic, non-linear, Preset grating are.This is rare in artificial lens.It is brilliant to grow LN Body has preferable feasibility, as raw material sources it is abundant, it is cheap, be easy to grow into bulky crystal, and pass through difference Doping means, which can also show, leans on a kind special flight of steps leading to a palace hall and can wait.Therefore, L/N crystal be people are had found so far optical property at most, The best crystal of overall target.
With the update and development of electrostatic spinning technique, there is now over one hundred kind of high polymer can be prepared into nanofiber whereby. Wherein, polyacrylonitrile (PAN) is one of most common polymer raw material in electrostatic spinning process.Polyacrylonitrile fibre refers to by gathering Fiber made of the copolymer that the fiber or acrylonitrile content of acrylonitrile spinning account for 85% or more spins.Pp In The World in 2000 Nitrile fiber production 2.6685Mt, China polyacrylonitrile fibre yield 473.7kt.In the electrospinning process, due to its preparation Nano fibrous membrane has that intensity is high, and draftability is good and good dielectricity, thus air filtration aspect have it is more wide Application potential.
Summary of the invention
In view of the above technical problems, the present invention provides a kind of LiNbO with high efficiency filter performance3/ PAN composite Nano Fibrous electret haze window screening and preparation method thereof.LiNbO3/ PAN composite nano-fiber material has charge, has low stream The advantages that resistance, high efficiency, high air penetrability, long-life, high dust collecting capability and saving energy, not only strainability is excellent, but also right There are also inhibition and killing effects for common bacterium.Combined by electrostatic spinning technique with electret greatly improve material absorption it is micro- Fine grain ability makes this haze window screening can achieve 85% or more to the filter efficiency of PM2.5.Substrate is silver-plated PP The advantages that melt spraying non-woven fabrics make haze window screening obtained have intensity big, and filter efficiency is high, and translucency is good, good permeability.
In order to solve the above technical problems, the present invention adopts the following technical solutions: a kind of LiNbO3/ PAN composite nano fiber Electret haze window screening, including three layers of tunica fibrosa, three layers of tunica fibrosa include sandwich layer, substrate and upper layer, the core Layer is LiNbO3/ PAN composite nano fiber, substrate are the silver-plated macromolecule reticular structure of 500-700 mesh, and upper layer is 50-150 mesh Black terylene non-woven fabrics, LiNbO3/ PAN composite nano fiber adheres to silver-plated macromolecule reticular structure by electrostatic spinning On obtain being stained with LiNbO3The silver-plated reticular structure of/PAN composite nano fiber, is stained with LiNbO3/ PAN composite nano fiber Silver-plated reticular structure by ultrasonic bonds on black terylene non-woven fabrics.
The LiNbO3/ PAN composite nano fiber is by LiNbO3Nanocrystal and PAN nanofiber are combined, wherein LiNbO3The mass ratio of nanocrystal and PAN nanofiber is (1-5): (1000-3000).LiNbO3Nanocrystal particle is in single Farmland ferroelectric phase mono-crystalline structures.
The LiNbO3Nanocrystal diameter of particle is 20-50 nm, LiNbO3The diameter of/PAN composite nano fiber fiber For 100-200 nm, porosity is 0.20-0.85 cm3/g。
The LiNbO3The preparation method of/PAN composite nano fiber electret haze window screening, comprising the following steps: (1) LiNbO that partial size is 20-50 nm is prepared3Nanocrystal；
(2) LiNbO obtained in step (1) is weighed3Nanocrystal 0.01-0.05 g is put into clean vial, then weighs The DMF of 30-50 g is added in corresponding vial and LiNbO is made with magnetic stirrer3/ DMF dispersion liquid；
(3) the PAN powder for weighing 10-30 g is added to step (2) resulting LiNbO3It is molten that PAN is made in/DMF dispersion liquid Liquid；PAN solution is heated to 60-80 C with water-bath, is vigorously stirred 15-24 h, until polymer is completely dissolved and disperses Even obtained mixed solution；
(4) electrostatic spinning is carried out using the resulting mixed solution of step (3), is spinned silver-plated macromolecule reticular structure On, it obtains being stained with LiNbO3The silver-plated reticular structure of/PAN composite nano fiber；
(5) LiNbO is stained with by what step (4) obtained3The silver-plated reticular structure and black terylene of/PAN composite nano fiber without Woven fabric is by ultrasonic bonds to both obtaining LiNbO together3/ PAN composite nano fiber electret haze window screening.
Preparation LiNbO described in step (1)3Nanocrystal the following steps are included: a, by load weighted Li2CO3And Nb2O5? Enter and prepares Li in beaker2CO3And Nb2O5Mixed solution, Li2CO3And Nb2O5Molal weight ratio be (1.0-5.0): (1.0- 4.0), Li2CO3Molar concentration be 0.1-1.0 mol/L；
B, the surfactant (SDS) that mass concentration is 0.1%-0.5% is added in the mixed solution made from step (1), in magnetic It is poured into reaction kettle after stirring 10-60 min on power blender, heating obtains reaction product after reaction kettle sealing, and reaction kettle adds Hot temperature is 200-300 DEG C, and heating time is 12-24 h；Surfactant (SDS) is lauryl sodium sulfate；
C, reaction product made from step (2) is taken out, uses distilled water and washes of absolute alcohol 2~5 times respectively；After cleaning Product is put into freeze drying box, and dry 2-5 h, obtains LiNbO at subzero 60-80 DEG C3Nanocrystal.
It is to ensure LiNbO in step (2)3Nanocrystal particle can be uniformly dispersed in DMF, use ultrasonic cleaning machine pair It carries out the processing of 30-60 min ultrasonic disperse.
Silver-plated macromolecule reticular structure described in step (4) is PP/ polyamide fibre/terylene, silver-plated macromolecule reticular structure Hole count be 500-700 mesh.
When electrostatic spinning apparatus works in step (4), the voltage of high pressure generator is 0-80 kV；Nozzle is to the reception The distance of base fabric is 10-15 cm；Nozzle diameter is 0.1-10 cm；The electrostatic spinning flow quantity of ejection is 0.5-3.0 mL/h； Receiving time 0.5-15 min.
The LiNbO that step (4) obtains3The diameter of/PAN composite nano fiber is 100-200 nm, porosity 0.20- 0.85 cm3/ g, surface density are 1.25-5.0 g/m2。
The hole count of black terylene non-woven fabrics described in step (5) is 50-150 mesh.
The invention has the advantages that (1) prepares PAN/LiNbO by electrostatic spinning3Composite nano fiber, average diameter exist 100nm or so, intensity is high, filter effect is good, is easy and macromolecule non-woven fabrics docile.
(2) electrostatic spinning process is combined with electret, material is greatly increased to subparticle by Electrostatic Absorption mode Filter efficiency, and the addition of electret can make fiber keep fiber electrification time long, and filter effect is good.
(3) composite nano fiber of preparation is weaved and passes through ultrasonic wave with black terylene on silver-plated macromolecule non-woven fabrics Bonding obtains the electret electrostatic nanofiber haze window screening that filter efficiency is high, air drag is small, translucency is good.Entire stream Journey is simple, easy to operate, can mass production, the condition that haze is provided convenience.
Detailed description of the invention
Fig. 1 is LiNbO prepared by the present invention3The Flied emission electron microscopic picture of/PAN composite nano-fiber membrane；
Fig. 2 is the LiNbO of hydro-thermal method of the present invention preparation3Nano particle；
Fig. 3 is LiNbO3/ PAN composite nano fiber electret haze window screening pictorial diagram.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, those of ordinary skill in the art are obtained every other under that premise of not paying creative labor Embodiment shall fall within the protection scope of the present invention.
Embodiment 1
A kind of LiNbO3/ PAN composite nano fiber electret haze window screening, including three layers of tunica fibrosa, three layers of fiber Film includes sandwich layer, substrate and upper layer, and the sandwich layer is LiNbO3/ PAN composite nano fiber, substrate are the silver-plated height of 500 mesh Molecular network, upper layer are the black terylene non-woven fabrics of 50 mesh, LiNbO3/ PAN composite nano fiber is viscous by electrostatic spinning It is attached on silver-plated macromolecule reticular structure and obtains being stained with LiNbO3The silver-plated reticular structure of/PAN composite nano fiber, adherency There is LiNbO3The silver-plated reticular structure of/PAN composite nano fiber is by ultrasonic bonds on black terylene non-woven fabrics.
The LiNbO3/ PAN composite nano fiber is by LiNbO3Nanocrystal and PAN nanofiber are combined.LiNbO3 Nanocrystal particle is in poling ferroelectric phase mono-crystalline structures.The LiNbO3Nanocrystal diameter of particle is 20-50 nm, LiNbO3The diameter of/PAN composite nano fiber fiber is 100-200 nm, and porosity is 0.20-0.85 cm3/g。
The LiNbO3The preparation method of/PAN composite nano fiber electret haze window screening, comprising the following steps: (1) LiNbO is prepared3Nanocrystal: the following steps are included: a, by load weighted Li2CO3And Nb2O5It pours into beaker and prepares Li2CO3And Nb2O5Mixed solution, Li2CO3And Nb2O5Molal weight ratio be 1.0:1.1, Li2CO3Molar concentration be 0.1 mol/L；
B, the surfactant (SDS) that mass concentration is 0.1% is added in the mixed solution made from step (1), in magnetic agitation It is poured into reaction kettle after stirring 20min on device, heating obtains reaction product after reaction kettle sealing, and the heating temperature of reaction kettle is 220 DEG C, heating time is 12 h；Surfactant (SDS) is lauryl sodium sulfate；
C, reaction product made from step (2) is taken out, uses distilled water and washes of absolute alcohol 2 times respectively；By the production after cleaning Object is put into freeze drying box, and the dry 2h at subzero 50 DEG C obtains the LiNbO that partial size is 20 nm3Nanocrystal.
(2) LiNbO obtained in step (1) is weighed30.01 g of nanocrystal is put into clean vial, then weighs The DMF of 30 g is added in corresponding vial and LiNbO is made with magnetic stirrer3/ DMF dispersion liquid；To ensure LiNbO3Nanocrystal particle can be uniformly dispersed in DMF, be carried out at 30min ultrasonic disperse using ultrasonic cleaning machine to it Reason.
(3) the PAN powder for weighing 10 g is added to step (2) resulting LiNbO3It is molten that PAN is made in/DMF dispersion liquid Liquid；PAN solution is heated to 60 C with water-bath, is vigorously stirred 15 h, until polymer is completely dissolved and is uniformly dispersed obtained Mixed solution；
(4) electrostatic spinning is carried out using the resulting mixed solution of step (3), is spinned silver-plated macromolecule reticular structure On, it obtains being stained with LiNbO3The silver-plated reticular structure of/PAN composite nano fiber；The silver-plated macromolecule reticular structure It is terylene, the hole count of silver-plated macromolecule reticular structure is 500 mesh；When electrostatic spinning apparatus works, the voltage of high pressure generator For 20 kV；The distance of nozzle to the reception base fabric is 10 cm；Nozzle diameter is 0.5 cm；The electrostatic spinning flow quantity of ejection For 0.5 mL/h；Receiving time 1min；The LiNbO that step (4) obtains3The diameter of/PAN composite nano fiber is 100 nm, hole Gap rate is 0.25 cm3/ g, surface density are 1.3 g/m2。
(5) LiNbO is stained with by what step (4) obtained3The silver-plated reticular structure of/PAN composite nano fiber is washed with black Synthetic fibre non-woven fabrics is by ultrasonic bonds to both obtaining LiNbO together3/ PAN composite nano fiber electret haze window screening.It is described Black terylene non-woven fabrics hole count be 50 mesh.
Embodiment 2
A kind of LiNbO3/ PAN composite nano fiber electret haze window screening, including three layers of tunica fibrosa, three layers of fiber Film includes sandwich layer, substrate and upper layer, and the sandwich layer is LiNbO3/ PAN composite nano fiber, substrate are the silver-plated height of 550 mesh Molecular network, upper layer are the black terylene non-woven fabrics of 80 mesh, LiNbO3/ PAN composite nano fiber is viscous by electrostatic spinning It is attached on silver-plated macromolecule reticular structure and obtains being stained with LiNbO3The silver-plated reticular structure of/PAN composite nano fiber, adherency There is LiNbO3The silver-plated reticular structure of/PAN composite nano fiber is by ultrasonic bonds on black terylene non-woven fabrics.
A kind of LiNbO3The preparation method of/PAN composite nano fiber electret haze window screening, comprising the following steps: (1) Prepare LiNbO3Nanocrystal: the following steps are included: a, by load weighted Li2CO3And Nb2O5It pours into and prepares Li in beaker2CO3With Nb2O5Mixed solution, Li2CO3And Nb2O5Molal weight ratio be 1.5:2, Li2CO3Molar concentration be 0.3mol/L；
B, the surfactant (SDS) that mass concentration is 0.2% is added in the mixed solution made from step (1), in magnetic agitation It is poured into reaction kettle after stirring 50 min on device, heating obtains reaction product after reaction kettle sealing, and the heating temperature of reaction kettle is 240 DEG C, heating time is 14 h；Surfactant (SDS) is lauryl sodium sulfate；
C, reaction product made from step (2) is taken out, uses distilled water and washes of absolute alcohol 3 times respectively；By the production after cleaning Object is put into freeze drying box, and dry 3 h at subzero 60 DEG C obtain the LiNbO that partial size is 30 nm3Nanocrystal.
(2) LiNbO obtained in step (1) is weighed30.02 g of nanocrystal is put into clean vial, then weighs The DMF of 40g is added in corresponding vial and LiNbO is made with magnetic stirrer3/ DMF dispersion liquid；To ensure LiNbO3Nanocrystal particle can be uniformly dispersed in DMF, be carried out at 40 min ultrasonic disperses using ultrasonic cleaning machine to it Reason.
(3) the PAN powder for weighing 15 g is added to step (2) resulting LiNbO3It is molten that PAN is made in/DMF dispersion liquid Liquid；PAN solution is heated to 70 C with water-bath, is vigorously stirred 20h, until polymer, which is completely dissolved and is uniformly dispersed, is made mixing Solution；
(4) electrostatic spinning is carried out using the resulting mixed solution of step (3), is spinned silver-plated macromolecule reticular structure On, it obtains being stained with LiNbO3The silver-plated reticular structure of/PAN composite nano fiber；The silver-plated macromolecule reticular structure It is PP, the hole count of silver-plated macromolecule reticular structure is 550 mesh；When electrostatic spinning apparatus works, the voltage of high pressure generator is 30kV；The distance of nozzle to the reception base fabric is 11 cm；Nozzle diameter is 1 cm；The electrostatic spinning flow quantity of ejection is 1mL/h；2 min of receiving time；The LiNbO that step (4) obtains3The diameter of/PAN composite nano fiber is 120 nm, porosity For 0.30cm3/ g, surface density 2.0g/m2。
(5) LiNbO is stained with by what step (4) obtained3The silver-plated reticular structure of/PAN composite nano fiber is washed with black Synthetic fibre non-woven fabrics is by ultrasonic bonds to both obtaining LiNbO together3/ PAN composite nano fiber electret haze window screening.It is described Black terylene non-woven fabrics hole count be 80 mesh.
Embodiment 3
A kind of LiNbO3/ PAN composite nano fiber electret haze window screening, including three layers of tunica fibrosa, three layers of fiber Film includes sandwich layer, substrate and upper layer, and the sandwich layer is LiNbO3/ PAN composite nano fiber, substrate are the silver-plated height of 600 mesh Molecular network, upper layer are the black terylene non-woven fabrics of 120 mesh, LiNbO3/ PAN composite nano fiber is viscous by electrostatic spinning It is attached on silver-plated macromolecule reticular structure and obtains being stained with LiNbO3The silver-plated reticular structure of/PAN composite nano fiber, adherency There is LiNbO3The silver-plated reticular structure of/PAN composite nano fiber is by ultrasonic bonds on black terylene non-woven fabrics.
The LiNbO3The preparation method of/PAN composite nano fiber electret haze window screening, comprising the following steps: (1) LiNbO is prepared3Nanocrystal: the following steps are included: a, by load weighted Li2CO3And Nb2O5It pours into beaker and prepares Li2CO3And Nb2O5Mixed solution, Li2CO3And Nb2O5Molal weight ratio be 3:2, Li2CO3Molar concentration be 0.5 mol/L；
B, the surfactant (SDS) that mass concentration is 0.3% is added in the mixed solution made from step (1), in magnetic agitation It is poured into reaction kettle after stirring 30min on device, heating obtains reaction product after reaction kettle sealing, and the heating temperature of reaction kettle is 260 DEG C, heating time is 18 h；Surfactant (SDS) is lauryl sodium sulfate；
C, reaction product made from step (2) is taken out, uses distilled water and washes of absolute alcohol 3 times respectively；By the production after cleaning Object is put into freeze drying box, and the dry 4h at subzero 70 DEG C obtains the LiNbO that partial size is 40 nm3Nanocrystal.
(2) LiNbO obtained in step (1) is weighed30.03 g of nanocrystal is put into clean vial, then weighs The DMF of 45 g is added in corresponding vial and LiNbO is made with magnetic stirrer3/ DMF dispersion liquid；To ensure LiNbO3Nanocrystal particle can be uniformly dispersed in DMF, be carried out at 50 min ultrasonic disperses using ultrasonic cleaning machine to it Reason.
(3) the PAN powder for weighing 20 g is added to step (2) resulting LiNbO3It is molten that PAN is made in/DMF dispersion liquid Liquid；PAN solution is heated to 70 C with water-bath, is vigorously stirred 20h, until polymer, which is completely dissolved and is uniformly dispersed, is made mixed Close solution；
(4) electrostatic spinning is carried out using the resulting mixed solution of step (3), is spinned silver-plated macromolecule reticular structure On, it obtains being stained with LiNbO3The silver-plated reticular structure of/PAN composite nano fiber；The silver-plated macromolecule reticular structure It is polyamide fibre, the hole count of silver-plated macromolecule reticular structure is 600 mesh；When electrostatic spinning apparatus works, the voltage of high pressure generator For 30 kV；The distance of nozzle to the reception base fabric is 13cm；Nozzle diameter is 6.5 cm；The electrostatic spinning flow quantity of ejection For 2mL/h；10 min of receiving time；The LiNbO that step (4) obtains3The diameter of/PAN composite nano fiber is 160 nm, hole Rate is 0.5cm3/ g, surface density are 3.2 g/m2。
(5) LiNbO is stained with by what step (4) obtained3The silver-plated reticular structure of/PAN composite nano fiber is washed with black Synthetic fibre non-woven fabrics is by ultrasonic bonds to both obtaining LiNbO together3/ PAN composite nano fiber electret haze window screening.It is described Black terylene non-woven fabrics hole count be 120 mesh.
Embodiment 4
A kind of LiNbO3/ PAN composite nano fiber electret haze window screening, including three layers of tunica fibrosa, three layers of fiber Film includes sandwich layer, substrate and upper layer, and the sandwich layer is LiNbO3/ PAN composite nano fiber, substrate are the silver-plated height of 700 mesh Molecular network, upper layer are the black terylene non-woven fabrics of 150 mesh, LiNbO3/ PAN composite nano fiber is viscous by electrostatic spinning It is attached on silver-plated macromolecule reticular structure and obtains being stained with LiNbO3The silver-plated reticular structure of/PAN composite nano fiber, adherency There is LiNbO3The silver-plated reticular structure of/PAN composite nano fiber is by ultrasonic bonds on black terylene non-woven fabrics.
The LiNbO3The preparation method of/PAN composite nano fiber electret haze window screening, comprising the following steps: (1) LiNbO is prepared3Nanocrystal: the following steps are included: a, by load weighted Li2CO3And Nb2O5It pours into beaker and prepares Li2CO3And Nb2O5Mixed solution, Li2CO3And Nb2O5Molal weight ratio be 5.0:4.0, Li2CO3Molar concentration be 1.0 mol/L；
B, the surfactant (SDS) that mass concentration is -0.5% is added in the mixed solution made from step (1), is stirred in magnetic force It mixes and is poured into reaction kettle after stirring 60 min on device, heating obtains reaction product, the heating temperature of reaction kettle after reaction kettle sealing It is 300 DEG C, heating time is 24 h；Surfactant (SDS) is lauryl sodium sulfate；
C, reaction product made from step (2) is taken out, uses distilled water and washes of absolute alcohol 5 times respectively；By the production after cleaning Object is put into freeze drying box, and dry 5 h at subzero 80 DEG C obtain the LiNbO that partial size is 50 nm3Nanocrystal.
(2) LiNbO obtained in step (1) is weighed30.05 g of nanocrystal is put into clean vial, then weighs The DMF of 50 g is added in corresponding vial and LiNbO is made with magnetic stirrer3/ DMF dispersion liquid；To ensure LiNbO3Nanocrystal particle can be uniformly dispersed in DMF, be carried out at 60 min ultrasonic disperses using ultrasonic cleaning machine to it Reason.
(3) the PAN powder for weighing 30 g is added to step (2) resulting LiNbO3It is molten that PAN is made in/DMF dispersion liquid Liquid；PAN solution is heated to 80 C with water-bath, is vigorously stirred 24 h, until polymer, which is completely dissolved and is uniformly dispersed, is made mixed Close solution；
(4) electrostatic spinning is carried out using the resulting mixed solution of step (3), is spinned silver-plated macromolecule reticular structure On, it obtains being stained with LiNbO3The silver-plated reticular structure of/PAN composite nano fiber；The silver-plated macromolecule reticular structure It is polyamide fibre, the hole count of silver-plated macromolecule reticular structure is 700 mesh；When electrostatic spinning apparatus works, the voltage of high pressure generator For 50 kV；The distance of nozzle to the reception base fabric is 15 cm；Nozzle diameter is 10 cm；The electrostatic spinning flow quantity of ejection For 3.0 mL/h；15 min of receiving time；The LiNbO that step (4) obtains3The diameter of/PAN composite nano fiber is 200 nm, Porosity is 5.0 cm3/ g, surface density are 5.0 g/m2。
(5) LiNbO is stained with by what step (4) obtained3The silver-plated reticular structure of/PAN composite nano fiber is washed with black Synthetic fibre non-woven fabrics is by ultrasonic bonds to both obtaining LiNbO together3/ PAN composite nano fiber electret haze window screening.It is described Black terylene non-woven fabrics hole count be 150 mesh.
Embodiment 5
A kind of LiNbO3/ PAN composite nano fiber electret haze window screening, including three layers of tunica fibrosa, three layers of fiber Film includes sandwich layer, substrate and upper layer, and the sandwich layer is LiNbO3/ PAN composite nano fiber, substrate are the silver-plated height of 500 mesh Molecular network, upper layer are the black terylene non-woven fabrics of 150 mesh, LiNbO3/ PAN composite nano fiber is viscous by electrostatic spinning It is attached on silver-plated macromolecule reticular structure and obtains being stained with LiNbO3The silver-plated reticular structure of/PAN composite nano fiber, adherency There is LiNbO3The silver-plated reticular structure of/PAN composite nano fiber is by ultrasonic bonds on black terylene non-woven fabrics.
The LiNbO3The preparation method of/PAN composite nano fiber electret haze window screening, comprising the following steps: (1) LiNbO is prepared3Nanocrystal: the following steps are included: a, by load weighted Li2CO3And Nb2O5It pours into beaker and prepares Li2CO3And Nb2O5Mixed solution, Li2CO3And Nb2O5Molal weight ratio be 1.0:4.0, Li2CO3Molar concentration be 1.0 mol/L；
B, the surfactant (SDS) that mass concentration is 0.5% is added in the mixed solution made from step (1), in magnetic agitation It is poured into reaction kettle after stirring 60 min on device, heating obtains reaction product after reaction kettle sealing, and the heating temperature of reaction kettle is 300 DEG C, heating time is 24 h；Surfactant (SDS) is lauryl sodium sulfate；
C, reaction product made from step (2) is taken out, uses distilled water and washes of absolute alcohol 5 times respectively；By the production after cleaning Object is put into freeze drying box, and dry 5 h at subzero 80 DEG C obtain the LiNbO that partial size is 60 nm3Nanocrystal.
(2) LiNbO obtained in step (1) is weighed30.05 g of nanocrystal is put into clean vial, then weighs The DMF of 30 g is added in corresponding vial and LiNbO is made with magnetic stirrer3/ DMF dispersion liquid；To ensure LiNbO3Nanocrystal particle can be uniformly dispersed in DMF, be carried out at 30 min ultrasonic disperses using ultrasonic cleaning machine to it Reason.
(3) the PAN powder for weighing 10-30 g is added to step (2) resulting LiNbO3It is made in/DMF dispersion liquid PAN solution；PAN solution is heated to 60 C with water-bath, is vigorously stirred 15h, until polymer is completely dissolved and is uniformly dispersed Mixed solution is made；
(4) electrostatic spinning is carried out using the resulting mixed solution of step (3), is spinned silver-plated macromolecule reticular structure On, it obtains being stained with LiNbO3The silver-plated reticular structure of/PAN composite nano fiber；The silver-plated macromolecule reticular structure It is PP/ polyamide fibre/terylene, the hole count of silver-plated macromolecule reticular structure is 500 mesh；When electrostatic spinning apparatus works, high pressure occurs The voltage of device is 80 kV；The distance of nozzle to the reception base fabric is 15 cm；Nozzle diameter is 10 cm；The Static Spinning of ejection Silk flow quantity is 3.0 mL/h；15 min of receiving time；The LiNbO that step (4) obtains3The diameter of/PAN composite nano fiber is 200 nm, porosity are 0.85 cm3/ g, surface density are 5.0 g/m2。
(5) LiNbO is stained with by what step (4) obtained3The silver-plated reticular structure of/PAN composite nano fiber is washed with black Synthetic fibre non-woven fabrics is by ultrasonic bonds to both obtaining LiNbO together3/ PAN composite nano fiber electret haze window screening.It is described Black terylene non-woven fabrics hole count be 150 mesh.

Claims (10)

1. a kind of LiNbO3/ PAN composite nano fiber electret haze window screening, it is characterised in that: including three layers of tunica fibrosa, institute The three layers of tunica fibrosa stated include sandwich layer, substrate and upper layer, and the sandwich layer is LiNbO3/ PAN composite nano fiber, substrate are The silver-plated macromolecule reticular structure of 500-700 mesh, upper layer are the black terylene non-woven fabrics of 50-150 mesh, LiNbO3/ PAN is compound to be received Rice fiber, which is adhered to by electrostatic spinning on silver-plated macromolecule reticular structure, to be obtained being stained with LiNbO3/ PAN composite Nano is fine The silver-plated reticular structure of dimension, is stained with LiNbO3The silver-plated reticular structure of/PAN composite nano fiber is by ultrasonic bonds black On color terylene non-woven fabric.
2. LiNbO according to claim 13/ PAN composite nano fiber electret haze window screening, it is characterised in that: institute State LiNbO3/ PAN composite nano fiber is by LiNbO3Nanocrystal and PAN nanofiber are combined, wherein LiNbO3It is nanocrystalline The mass ratio of body and PAN nanofiber is (1-5): (1000-3000).
3. LiNbO according to claim 23/ PAN composite nano fiber electret haze window screening, it is characterised in that: institute State LiNbO3Nanocrystal diameter of particle is 20-50 nm, LiNbO3The diameter of/PAN composite nano fiber fiber is 100-200 Nm, porosity are 0.20-0.85 cm3/g。
4. LiNbO according to claim 1-33The preparation of/PAN composite nano fiber electret haze window screening Method, it is characterised in that: the following steps are included: (1) prepares the LiNbO that partial size is 20-50 nm3Nanocrystal；
(2) LiNbO obtained in step (1) is weighed3Nanocrystal 0.01-0.05 g is put into clean vial, then weighs The DMF of 30-50 g is added in corresponding vial and LiNbO is made with magnetic stirrer3/ DMF dispersion liquid；
(3) the PAN powder for weighing 10-30 g is added to step (2) resulting LiNbO3It is molten that PAN is made in/DMF dispersion liquid Liquid；PAN solution is heated to 60-80 C with water-bath, is vigorously stirred 15-24 h, until polymer is completely dissolved and disperses Even obtained mixed solution；
(4) electrostatic spinning is carried out using the resulting mixed solution of step (3), is spinned silver-plated macromolecule reticular structure On, it obtains being stained with LiNbO3The silver-plated reticular structure of/PAN composite nano fiber；
(5) LiNbO is stained with by what step (4) obtained3The silver-plated reticular structure and black terylene nonwoven of/PAN composite nano fiber Cloth is by ultrasonic bonds to both obtaining LiNbO together3/ PAN composite nano fiber electret haze window screening.
5. LiNbO according to claim 43The preparation method of/PAN composite nano fiber electret haze window screening, it is special Sign is: preparation LiNbO described in step (1)3Nanocrystal the following steps are included: a, by load weighted Li2CO3And Nb2O5? Enter and prepares Li in beaker2CO3And Nb2O5Mixed solution, Li2CO3And Nb2O5Molal weight ratio be (1.0-5.0): (1.0- 4.0), Li2CO3Molar concentration be 0.1-1.0 mol/L；
B, the surfactant (SDS) that mass concentration is 0.1%-0.5% is added in the mixed solution made from step (1), in magnetic It is poured into reaction kettle after stirring 10-60 min on power blender, heating obtains reaction product after reaction kettle sealing, and reaction kettle adds Hot temperature is 200-300 DEG C, and heating time is 12-24 h；
C, reaction product made from step (2) is taken out, uses distilled water and washes of absolute alcohol 2~5 times respectively；After cleaning Product is put into freeze drying box, and dry 2-5 h, obtains LiNbO at subzero 60-80 DEG C3Nanocrystal.
6. LiNbO according to claim 43The preparation method of/PAN composite nano fiber electret haze window screening, it is special Sign is: being to ensure LiNbO in step (2)3Nanocrystal particle can be uniformly dispersed in DMF, use ultrasonic cleaning machine pair It carries out the processing of 30-60 min ultrasonic disperse.
7. LiNbO according to claim 43The preparation method of/PAN composite nano fiber electret haze window screening, it is special Sign is: silver-plated macromolecule reticular structure described in step (4) is PP/ polyamide fibre/terylene, silver-plated macromolecule reticular structure Hole count is 500-700 mesh.
8. LiNbO according to claim 43The preparation method of/PAN composite nano fiber electret haze window screening, it is special Sign is: when electrostatic spinning apparatus works in step (4), the voltage of high pressure generator is 0-80 kV；Nozzle is to the reception base The distance of cloth is 10-15 cm；Nozzle diameter is 0.1-10 cm；The electrostatic spinning flow quantity of ejection is 0.5-3.0 mL/h；It connects 0.5-15 min between time receiving.
9. LiNbO according to claim 43The preparation method of/PAN composite nano fiber electret haze window screening, it is special Sign is: the LiNbO that step (4) obtains3The diameter of/PAN composite nano fiber is 100-200 nm, porosity 0.20- 0.85 cm3/ g, surface density are 1.25-5.0 g/m2。
10. LiNbO according to claim 43The preparation method of/PAN composite nano fiber electret haze window screening, Be characterized in that: the hole count of black terylene non-woven fabrics described in step (5) is 50-150 mesh.
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CN111330355A (en) * 2020-02-28 2020-06-26 厦门理工学院 Electret nanofiber high-efficiency filter material and preparation method thereof
CN111330355B (en) * 2020-02-28 2022-06-14 厦门理工学院 Electret nanofiber high-efficiency filter material and preparation method thereof
CN115323624A (en) * 2022-08-23 2022-11-11 浙江理工大学 Preparation method of nanofiber membrane with antibacterial hydrophobic microsphere layer
CN115323624B (en) * 2022-08-23 2024-02-13 浙江理工大学 Preparation method of nanofiber membrane with antibacterial hydrophobic microsphere layer

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