CN104289042B - A kind of electrostatic spinning nano fiber electret filtering material and preparation method thereof - Google Patents
A kind of electrostatic spinning nano fiber electret filtering material and preparation method thereof Download PDFInfo
- Publication number
- CN104289042B CN104289042B CN201410452788.XA CN201410452788A CN104289042B CN 104289042 B CN104289042 B CN 104289042B CN 201410452788 A CN201410452788 A CN 201410452788A CN 104289042 B CN104289042 B CN 104289042B
- Authority
- CN
- China
- Prior art keywords
- fiber
- electrostatic spinning
- filtering material
- preparation
- polymer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Filtering Materials (AREA)
- Nonwoven Fabrics (AREA)
Abstract
The present invention relates to a kind of electrostatic spinning nano fiber electret filtering material and preparation method thereof, by controlling polymer solution component and temperature, nanofiber shaping " cooling fast " process in electrostatic spinning process, one-step shaping prepares efficient, low-resistance nanofiber electret filtering material without adhesion, fluffy three-dimensional netted interworking architecture between fiber, and wherein the grammes per square metre of nanofiber layer is 0.01-70g/m
2porosity of=80%, the Surface electrostatic potential of nanofiber electret composite filter material is 800-6000V, and surface charge has permanent reserve stability, hydrophobic angle is greater than 150 °, can reach more than 99.999% to the filter efficiency of the particle of 0.006-1 μm, pressure drag is less than 20Pa, and dust containing capacity is 300-3600g/m
2, preparation technology of the present invention is simple, and filtering material has broad application prospects in fields such as the filtration of individual protection mouth mask, indoor air purification filtration and efficient/ultra high efficiency air filtrations.
Description
Technical field
The present invention relates to a kind of electrostatic spinning nano fiber electret filtering material and preparation method thereof, particularly provide a kind of after nanofiber is shaping, makes its instantaneous temperature reduction electrostatic spinning nano fiber electret filtering material " freezing " polarization charge and space charge and preparation method thereof.
Background technology
High-performance static electro spinning nano fiber filtering material need have the feature of high efficiency, lower resistance, but the filtering material of routine relies on the effective filtration of design feature (aperture size, bulk density etc.) realization to particle of material itself, usually having high efficiency while, also there is very high pressure drag, cause strainability poor, thus be only difficult to realize the target of the active balance of filter efficiency and pressure drag and high efficiency, lower resistance by the design feature of fiber itself.And the introducing of electrostatic adsorption (electret material) can increase substantially electrostatic adsorption force to the interception function of particle and improves filter efficiency on the basis of original filter structure efficiency, ensure again the feature of low pressure drag simultaneously.
The research of current fiber electret material, exploitation and produce the main mode adopting high-voltage corona discharge and thermal poling, although its energy electret fiber filtering preferably, but also there is shortcomings in it simultaneously, such as: electret unstable properties, produce electric charge based on fiber sheath space charge and easily lost efficacy, equipment is complicated, high in cost of production.Disclosed in utilize corona discharge and thermal poling to prepare electrotype fiber filtration material patent have: patent CN1427430A discloses one and " has multi-layer electret and the manufacture method thereof of ultra-high charge stability ", it also applies high-tension electricity thereon by the fep film on high-temperature heating sheet metal, make it melting adhered, rear cooling completes electret, finally with the electret of charge charging cooling; Patent CN101071683A discloses " a kind of polarization method of electret ", and it melts macromolecule membrane by heating up, and carries out electret, electret process of finally having lowered the temperature to its applying external electric field; Patent CN101905101A discloses " a kind of preparation method of fusion-jetting polypropylene electret filtering material ", and the melt extruding spinneret orifice is blown out ultra-fine fiber by high velocity, hot air by it, makes fiber by the electrode of corona discharge assembly simultaneously, completes electret; Patent CN103240945A discloses, and " a kind of preparation method of composition polymer electret " adopts corona polarizing or thermal poling method to composite membrane electret.These patented technologies all adopt heating or high-temperature process after under high-tension electricity electret polymeric material, though there is certain electret effect, electret stability in use can be improved to a certain extent, but be nature cooling due to temperature-fall period and be only down to room temperature, cause in temperature-fall period, occurring the phenomenon of polarization charge " depolarization " and the loss of space charge, and in use, being vulnerable to environmental influence causes charge character to be decayed, thus causes electret performance to meet actual operation requirements.
Summary of the invention
The object of this invention is to provide a kind of electrostatic spinning nano fiber electret filtering material and preparation method thereof, electrostatic spinning nano fiber electret filtering material that a kind of thermal poling is particularly provided and preparation method thereof, Static Spinning is a kind of nanofiber technology of preparing utilizing high-tension electricity to carry out spinning is also a kind of nanofiber electret technology simultaneously, it is to inject in the middle of fiber by a large amount of space charge in the process of spinning compared to the advantage of corona discharge and thermal poling electret technology, and space charge is easily caught by the deep trap of fibrous inside, can polarize and produce polarization charge by induced dipole simultaneously, electret effect is lastingly long-acting, and while electrostatic spinning auxiliary heating institute spinning polymer solution, it is made to produce certain " thermal poling effect ", and after nanofiber is shaping, make below its instantaneous temperature reduction to 0 °, to freeze polarization charge and space charge, prevent the loss of " depolarization " phenomenon and space charge, thus method of electrostatic spinning can prepare nanofiber electret filtering material by one-step shaping, and there is excellent electret effect.
Specific embodiment of the invention step is:
1) prepare the polymer solution of finite concentration (3 ~ 40%) or the mixture solution of two kinds, three kinds polymer or at least contain a kind of polymer solution of inorganic nanoparticles, the mixture solution of two kinds, three kinds polymer.Different polymer solution divides other process for preparation: the polymer solution preparation process 1. not containing inorganic nanoparticles is: directly join in the middle of corresponding solvent by a certain amount of one, two or three polymer, and stir 3-20 hour continuously with magnetic stirring apparatus, prepare even, stable solution; 2. the polymer formulation process containing inorganic nanoparticles is: first add in solvent by inorganic nanoparticles, and ultrasonic 0.5-15 hour, then a certain amount of one, two or three polymer are added wherein, and stir 3-20 hour continuously with magnetic stirring apparatus, be mixed with even, stable solution.
2) by the polymer solution of finite concentration (3 ~ 40%) or containing in the polymer solution suction spray silk module of inorganic nanoparticles, wherein spray silk model calling attemperating unit (temperature range: 30 ~ 120 DEG C), the solution in spray silk module can be made to keep at a certain temperature, spray in silk module containing online agitating device simultaneously, object makes inorganic nanoparticles be dispersed in polymer, prevents from reuniting.
3) in electrostatic spinning unit, spinning is carried out, the syringe needle of spray silk module front end connects high voltage source, the nanofiber base material spun receives, liquid nitrogen constant speed (1 ~ 100L/min) releasing device is had at the back side (1 ~ 100mm) of base material, it can make electrostatic spinning fiber material be down to low temperature (being less than 0 DEG C) instantaneously, because polymer solution is under the effect of electrostatic field, a large amount of polarization charge can be produced, polarization charge is now easily owing to being subject to the impact of molecular chain movement and environment temperature and humidity etc., the molecule polarized is made to there will be depolarization phenomenon, cause electret weak effect, and instantaneous cooling can make the temperature of polymer be down to subzero within the extremely short time, with fast " freezing " strand, prevent the generation of depolarization phenomenon, simultaneously the kinetic energy of instantaneous cooling polymer space charge that polymer has been trapped reduces, reduce electron escape ability, the storage of the electric charge in space can be strengthened instantaneously, strengthening electret effect.In addition, nitrogen passes through base material with certain speed, a reaction force can be produced to aloft nanofiber, hinder fiber and interfibrous close-packed arrays, be conducive to shaping nanofiber and form fluffy structure, to form efficient, the low-resistance electret filtering material without adhesion, fluffy three-dimensional netted interworking architecture between fiber, formed hydrophobic (hydrophobic angle > 150 °) nanofiber electret filtering material can reach more than 99.999% to the filter efficiency of the particle of 0.02 ~ 6 μm, pressure drag is less than 20Pa.
Wherein the process conditions of electrostatic spinning are: voltage 5 ~ 70KV, receiving range 3 ~ 40cm, rate of flooding 0.1 ~ 10mL/h, temperature 0 ~ 35 DEG C, relative humidity 0 ~ 90%.
Wherein " instantaneous temperature reduction " processes the good effect produced and is: 1. electret material surface electrostatic potential strengthens, common electrostatic spin electret material surface electrostatic potential general only 300 ~ 1200V, and be 800 ~ 6000V through the Static Spinning electret material surface electrostatic potential that " instantaneous cooling " processes; 2. the electret life-span strengthens greatly: common electrostatic spins electret material charge decay half a year 50%, and the Static Spinning electret material preservation six months electric charge processed through " instantaneous cooling " is undamped.
As preferred technical scheme:
A preparation method for electrostatic spinning nano fiber electret filtering material, described preparation process comprises:
1) electrostatic spinning is carried out after polymer solution being heated to 30 ~ 120 DEG C;
2) described electrostatic spinning gained fiber receive base material receive after below fast cooling to 0 DEG C, namely obtain electrostatic spinning nano fiber electret filtering material; When described fast cooling refers to that institute's spinning nano fibre is less than 1mm with the distance receiving base material, after nanofiber contacts with liquid nitrogen, within the time being less than 5s, be reduced to less than 0 DEG C.
The preparation method of a kind of electrostatic spinning nano fiber electret filtering material as above, the mass concentration of described polymer solution is 3 ~ 40%.
The preparation method of a kind of electrostatic spinning nano fiber electret filtering material as above, the polymer that its spinning adopts is Kynoar, polypropylene, polybutylene terephthalate, polyethylene terephthalate, polyarylate, polyvinyl acetate, nylon 6, polyvinyl alcohol, polymethyl methacrylate, polyaniline, polyethylene glycol oxide, polyvinylpyrrolidone, polyacrylonitrile, polycaprolactone, polyethylene glycol, polyurethane, fluorinated polyurethane, polysulfones, polyether sulfone, Kynoar ~ hexafluoropropene, Kynoar ~ tetrafluoroethylene ~ perfluoro methyl vinyl ether, one in Kynoar ~ CTFE, or the mixture of any two or three polymer.
Described polymer comprises homopolymers, block copolymer, random copolymer, the mixture of two kinds of different homopolymers, homopolymers and the mixture of block copolymer and the mixture of homopolymers and random copolymer;
The effect of described block copolymer and random copolymer is: because block copolymer different molecular chain part can form different crystal regions and amorphous area in Static Spinning process, under the effect of external electric field, electronics or ion can assemble the polarization forming interface in interface, produce polarization charge, and the nanofiber that the mixture of two or more polymerizations is prepared by electrostatic spinning can be made up of multiple polymers component, and interface between different polymers compositions, can be formed, can interfacial polarization be formed equally under the effect of adding some points outside, produce polarization charge.
The preparation method of a kind of electrostatic spinning nano fiber electret filtering material as above, in described polymer solution, solvent corresponds to respectively according to type of polymer:
Kynoar: N, N ~ dimethyl formamide (DMF), N ~ methyl pyrrolidone (NMP), dimethylacetylamide (DMAc), triethyl phosphate and dimethyl sulfoxide (DMSO) (DMSO);
Polypropylene: normal heptane, tetrahydrochysene fluoronaphthalene, dimethylbenzene etc.;
Polybutylene terephthalate: carrene, oxolane (THF), chloroform, acetone etc.;
Polyethylene terephthalate: carrene, oxolane, chloroform, acetone etc.;
Polyarylate: carrene, oxolane, chloroform, acetone etc.;
Polyvinyl acetate: toluene, acetone, ethanol, acetic acid, ethyl acetate, chloroform etc.;
The solvent of nylon 6 is formic acid;
Polyvinyl alcohol: be water, ethanol, N, N ~ dimethyl formamide, oxolane;
Polymethyl methacrylate: chloroform, acetic acid, ethyl acetate, acetone, toluene etc.;
Polyaniline: N, N ~ dimethyl formamide, N ~ methyl pyrrolidone etc.;
Polyethylene glycol oxide: N, N ~ dimethyl formamide, ethanol, water, chloroform;
Polyvinylpyrrolidone: water, ethanol, N, N ~ dimethylacetylamide, N, N ~ dimethyl formamide etc.;
Polyacrylonitrile: N, N ~ dimethyl formamide, dimethyl sulfoxide (DMSO) etc.;
Polycaprolactone: N, N ~ dimethyl formamide, acetone etc.;
Polyethylene glycol: water, ethanol, N, N ~ dimethyl formamide etc.;
Polyurethane: N, N ~ dimethyl formamide, acetone, N ~ methyl pyrrolidone etc.;
Fluorinated polyurethane: N, N ~ dimethyl formamide, acetone, N ~ methyl pyrrolidone etc.;
Polysulfones and polyether sulfone: N, N ~ dimethyl formamide, acetone, N ~ methyl pyrrolidone, dimethylacetylamide, oxolane etc.;
Kynoar-hexafluoropropene: N, N ~ dimethyl formamide, N ~ methyl pyrrolidone, dimethylacetylamide, triethyl phosphate and dimethyl sulfoxide (DMSO) etc.;
Kynoar-tetrafluoroethylene-perfluoro methyl vinyl ether: N, N ~ dimethyl formamide, N ~ methyl pyrrolidone, dimethylacetylamide, triethyl phosphate and dimethyl sulfoxide (DMSO) etc.;
Kynoar-CTFE: N, N ~ dimethyl formamide, N ~ methyl pyrrolidone, dimethylacetylamide, triethyl phosphate and dimethyl sulfoxide (DMSO) etc.;
The mixture solvent for use of above-mentioned any two or three polymer is can dissolve the mixture of the solvent of single polymers respectively or can dissolve the single solvent of two or three polymer simultaneously.
A kind of electrostatic spinning nano fiber electret filtering material as above, also containing at least one inorganic nanoparticles in described polymer solution, described inorganic nanoparticles: silica, alundum (Al2O3), zinc oxide, barium monoxide, titanium dioxide, tantalum pentoxide, barium titanate, lead zirconate titanate, silicon nitride, tourmaline, boehmite or silsesquioxane nano particle etc.;
Amount added by described inorganic nanoparticles is: 0.1 ~ 10wt% of polymer and inorganic nanoparticles total amount;
The described process for preparation containing inorganic nanoparticles polymer solution is: first add in solvent by inorganic nanoparticles, and ultrasonic 0.5-15 hour, then polymer solution is added wherein, and stir 3-20 hour continuously with magnetic stirring apparatus, be mixed with even and stable solution;
The described mechanism of action containing inorganic nanoparticles is: inorganic nanoparticles has the injection of space charge and the generation of polarization charge under external electric field existent condition, very large humidification is had to electret effect, and inorganic electret mixes the interface produced can produce interfacial polarization with organic polymer under the existence of external electric field, produce polarization charge, same enhancing electret effect, the membership that adds of inorganic nanoparticles simultaneously makes prepared nanofiber produce shaggy structure, makes the nano fibrous membrane prepared produce super-hydrophobic performance.
The preparation method of a kind of electrostatic spinning nano fiber electret filtering material as above, described spray silk model calling attemperating unit, its object is by heating, the polymer molecular chain freezed in solution " is thawed ", under this is conducive to the effect of subsequent additional electric field, dipole molecule better polarizes, and produces more polarization charge;
Described heating refers to that polymer heats in the spray silk module of electrostatic spinning, namely sprays silk model calling one attemperating unit; Also containing online agitating device in described spray silk module.
The preparation method of a kind of electrostatic spinning nano fiber electret filtering material as above, the process conditions of described electrostatic spinning are: voltage 5 ~ 70KV, receiving range 3 ~ 40cm, rate of flooding 0.1 ~ 10mL/h, temperature 0 ~ 35 DEG C, relative humidity 0 ~ 90%.
A kind of nanofiber electret air filting material as above, the receive mode of described nanofiber is: dull and stereotyped reception or hollow slab device receive, and receive mode is receive up and down or left and right reception.
The preparation method of a kind of electrostatic spinning nano fiber electret filtering material as above, the material of described base material is: the fiber base material of wood pulp cellulose base material, fiber base material or mixing;
Described wood pulp cellulose base material is deflection 0.5 ~ 5mNm, grammes per square metre 8 ~ 400g/m
2wood pulp cellulose filter paper or wood pulp cellulose non-weaving cloth, wood pulp cellulose filter paper is corrugation filter paper, and wherein the corrugation distance of cellulose corrugation filter paper is 0 ~ 3mm;
Described fiber base material is containing cellulose fiber, polyester fiber, the filter paper of polyamide fiber or non-weaving cloth, and its deflection is 0.5 ~ 5mNm, and grammes per square metre is 6 ~ 350g/m
2; Fiber filter paper comprises corrugation filter paper, and wherein the corrugation distance of cellulose corrugation filter paper is 0 ~ 3mm;
The fiber base material of described mixing is filter paper or the non-weaving cloth of the blended fiber of the two or more compositions in containing cellulose fiber element, polyester fiber, polyamide fiber, and its deflection is for being 0.5 ~ 5mNm, and grammes per square metre is 6 ~ 350g/m
2, described blended fiber filter paper is corrugation filter paper, and wherein the corrugation distance of cellulose corrugation filter paper is 0mm ~ 3mm.
The preparation method of a kind of electrostatic spinning nano fiber electret filtering material as above, the mode of described cooling is provided with a liquid nitrogen constant release device in the back side 1 ~ 100mm distance of described reception base material, and rate of release is 1 ~ 100L/min.
A kind of electrostatic spinning nano fiber electret filtering material as above, described electrostatic spinning nano fiber electret filtering material is the two layer composite structure of substrate layer and nanofiber layer;
The material of described substrate layer is the fiber base material of the wood pulp cellulose base material of porous, fiber base material or mixing, and its fibre diameter is 10 ~ 50 μm, and aperture size is 3 ~ 120 μm;
The nanofiber diameter of described nanofiber layer: 0.008 ~ 1 μm, nanofiber layer grammes per square metre is: 0.01 ~ 70g/m
2, the porosity of nanofiber layer is>=80%; Described electrostatic spinning nano fiber electret filtering material Surface electrostatic potential is 1700 ~ 2300V, hydrophobic angle > 150 °, can reach more than 99.999% to the filter efficiency of the particle of 0.006 ~ 1 μm, pressure drag is less than 20Pa, and dust containing capacity is 300 ~ 3600g/m
2.
Beneficial effect:
1. first passage of the present invention controls polymer solution component and temperature, inorganic nanoparticles content and nanofiber shaping " instantaneous cooling ", thus one-step shaping prepares three-dimensional netted interworking architecture nanofiber electret filtering material fluffy without adhesion, structure between fiber, composite nano fiber electret material has high Surface electrostatic potential, superpower Electrostatic Absorption performance.
2. preparation method's technique provided by the invention is simple, is applicable to the preparation of a series of fiber of polymer-based nano widely electret composite filter material.In addition, this preparation method has good fibre structure controllability, by controlling the content of liquid nitrogen rate of release and inorganic nanoparticles, realizes the accurate control of bulk density to tunica fibrosa and wettability.
3. the nanofiber filtration material that prepared by this patent has higher Surface electrostatic potential, and the Charge Storage Stability of excellence, thus has higher Electrostatic Absorption strainability, and performance is better than existing fiber electret composite filter material.
4. the nanofiber electret composite filter material that prepared by the present invention has the three-dimensional netted interworking architecture that aperture is little, porosity is high, structure is fluffy, these characteristics of material make it in actual use, while guarantee filtration efficiency, there is high air permeability, this can reduce actual consumption greatly, has actual application prospect widely.
Accompanying drawing explanation
Fig. 1 is spinning equipment structural representation, and wherein 1 is spray silk module, and 2 is temperature control equipment, and 3 for receiving base material, and 4 for receiving feeding device, and 5 is the constant releasing device of liquid nitrogen.
Fig. 2 is that electrostatic spinning nano fiber electret material and business melt-blown PP nonwoven fabric Electrostatic Absorption strainability and temperature relation figure, this figure show that electret filtering material prepared by this patent has excellent Electrostatic Absorption strainability and Charge Storage Stability energy.
Detailed description of the invention
Below in conjunction with detailed description of the invention, set forth the present invention further.Should be understood that these embodiments are only not used in for illustration of the present invention to limit the scope of the invention.In addition should be understood that those skilled in the art can make various changes or modifications the present invention, and these equivalent form of values fall within the application's appended claims limited range equally after the content of having read the present invention's instruction.
Embodiment 1
A kind of electrostatic spinning nano fiber electret filtering material and preparation method thereof, concrete steps are:
The first step: Kynoar powder to be placed under 80 DEG C of vacuum drying ovens vacuumize 3 hours.
Second step: be dissolved in DMF by Kynoar powder complete for drying, is placed in described solution on magnetic stirring apparatus and stirs 10 hours respectively, forms homogeneous phase solution; In described homogeneous phase solution, the mass fraction of Kynoar is 40%.
3rd step: use the Static Spinning equipment spinning shown in Fig. 1, the first a certain amount of above-mentioned polyvinylidene fluoride polymer solution of suction in spray silk module 1, and the attemperating unit 2 of spray silk module is adjusted to 70 DEG C, within constant 20 minutes, be heated to make polymer uniform, wherein spray silk module spinning nozzle is 15cm to the distance of reception base material, and institute's making alive is 60kV.
4th step: open high voltage source, voltage is adjusted to 60kV, the environment temperature of spinning is 25 DEG C, humidity is 60%, by polymer solution with the rate of flooding electrostatic spinning of 5mL/h to reception base material 3 on, be arranged on the liquid nitrogen constant release device 5 received inside feeding device 4 simultaneously and discharge liquid nitrogen with the speed of 50L/min, the instantaneous temperature that institute's spinning nano fibre contacts with liquid nitrogen is down to less than 0 DEG C, nanofiber is subject to the reaction force contrary with its direction of motion simultaneously, thus without adhesion between acquisition fiber, fluffy three-dimensional netted interworking architecture efficient, low-resistance nanofiber electret filtering material, wherein the grammes per square metre of nanofiber layer is 50g/m
2the Surface electrostatic potential of nanofiber electret composite filter material is 4000V, hydrophobic angle 152 °, as shown in Figure 2, institute's spinning nano fibre electret filtering material can reach 99.9991% to the filter efficiency of 0.006-1 μm of particle, and have excellent Charge Storage Stability energy, pressure drag 19Pa, dust containing capacity is 2000g/m
2.
Embodiment 2
A kind of electrostatic spinning nano fiber electret filtering material and preparation method thereof, concrete steps are:
The first step: polybutylene terephthalate particle to be placed under 50 DEG C of vacuum drying ovens vacuumize 1 hour.
Second step: boehmite is added in a certain amount of carrene, and ultrasonic 4 hours, then polybutylene terephthalate particle complete for drying is added in the dichloromethane solvent containing boehmite, above-mentioned solution is placed on magnetic stirring apparatus and stirs 12 hours respectively, form homogeneous phase solution; In described homogeneous phase solution, the mass fraction of polybutylene terephthalate is 20%, and boehmite content is the 3wt% of polymer and inorganic nanoparticles total amount.
3rd step: use the Static Spinning equipment spinning shown in Fig. 1, the a certain amount of above-mentioned polybutylene terephthalate polymer solution containing boehmite of suction in spray silk module first at 10mL in spray silk module 1, and the attemperating unit 2 of spray silk module is adjusted to 60 DEG C, within constant 20 minutes, be heated to make polymer uniform, wherein spray silk module spinning nozzle is 30cm to the distance of reception base material, and institute's making alive is 50kV.
4th step: open high voltage source, voltage is adjusted to 50kV, the environment temperature of spinning is 25 DEG C, humidity is 60%, by polymer solution with the rate of flooding electrostatic spinning of 5mL/h to reception base material 3 on, be arranged on the liquid nitrogen constant release device 5 received inside feeding device 4 simultaneously and discharge liquid nitrogen with the speed of 60L/min, the instantaneous temperature that institute's spinning nano fibre contacts with liquid nitrogen is down to less than 0 DEG C, nanofiber is subject to the reaction force contrary with its direction of motion simultaneously, thus without adhesion between acquisition fiber, fluffy three-dimensional netted interworking architecture efficient, low-resistance nanofiber electret filtering material, wherein the grammes per square metre of nanofiber layer is 61g/m
2the Surface electrostatic potential of nanofiber electret composite filter material is 3300V, hydrophobic angle 158 °, as shown in Figure 2, institute's spinning nano fibre electret filtering material can reach 99.9994% to the filter efficiency of 0.006-1 μm of particle, and have excellent Charge Storage Stability energy, pressure drag 12Pa, dust containing capacity is 2980g/m
2.
Embodiment 3
A kind of electrostatic spinning nano fiber electret filtering material and preparation method thereof, concrete steps are:
The first step: fluorinated polyurethane particle and polyethersulfone granules are placed in respectively 70 DEG C and the lower vacuumize of 80 DEG C of vacuum drying ovens 2 hours.Second step: silsesquioxane is added in a certain amount of formic acid and DMF mixed solvent, and ultrasonic 5 hours, then fluorinated polyurethane particle complete for drying and polyethersulfone granules are added containing in the formic acid of silsesquioxane and DMF mixed solvent, above-mentioned solution is placed on magnetic stirring apparatus and stirs 10 hours respectively, form homogeneous phase solution; In described homogeneous phase solution, the mass fraction of fluorinated polyurethane and polyether sulfone is 20%, and both ratios of mixing are 1:4, and silsesquioxane content is the 3wt% of polymer and inorganic nanoparticles total amount.
3rd step: use the Static Spinning equipment spinning shown in Fig. 1, the first a certain amount of above-mentioned fluorinated polyurethane containing silsesquioxane of suction and polyether sulfone polymer mixed solution in spray silk module 1, and the attemperating unit 2 of spray silk module is adjusted to 80 DEG C, within constant 20 minutes, be heated to make polymer uniform, wherein spray silk module spinning nozzle is 35cm to the distance of reception base material, and institute's making alive is 65kV.4th step: open high voltage source, voltage is adjusted to 65kV, the environment temperature of spinning is 20 DEG C, humidity is 40%, by polymer solution with the rate of flooding electrostatic spinning of 6mL/h to reception base material 3 on, be arranged on the liquid nitrogen constant release device 5 received inside feeding device 4 simultaneously and discharge liquid nitrogen with the speed of 49L/min, the instantaneous temperature that institute's spinning nano fibre contacts with liquid nitrogen is down to less than 0 DEG C, nanofiber is subject to the reaction force contrary with its direction of motion simultaneously, thus without adhesion between acquisition fiber, fluffy three-dimensional netted interworking architecture efficient, low-resistance nanofiber electret filtering material, wherein the grammes per square metre of nanofiber layer is 66g/m
2the Surface electrostatic potential of nanofiber electret composite filter material is 2320V, hydrophobic angle 154 °, as shown in Figure 2, institute's spinning nano fibre electret filtering material can reach 99.9999% to the filter efficiency of 0.006-1 μm of particle, and have excellent Charge Storage Stability energy, pressure drag 7Pa, dust containing capacity is 3280g/m
2.
Embodiment 4
A kind of electrostatic spinning nano fiber electret filtering material and preparation method thereof, concrete steps are:
The first step: respectively polyvinyl acetate particle and nylon 6 particle are placed in 30 DEG C and the lower vacuumize of 80 DEG C of vacuum drying ovens 3 hours.
Second step: polyvinyl acetate particle complete for drying and nylon 6 particle are dissolved in toluene and formic acid respectively, and above-mentioned solution is placed on magnetic stirring apparatus stirs 12 hours respectively, form homogeneous phase solution; In described homogeneous phase solution, the mass fraction of polyvinyl acetate and nylon 6 mixed solution is 20%, and both mixed proportions are 4:1.
3rd step: use the Static Spinning equipment spinning shown in Fig. 1, the first a certain amount of above-mentioned polyvinyl acetate particle of suction and nylon 6/poly polymer solution in spray silk module 1, and the attemperating unit 2 of spray silk module is adjusted to 90 DEG C, within constant 20 minutes, be heated to make polymer uniform, wherein spray silk module spinning nozzle is 35cm to the distance of reception base material, and institute's making alive is 55kV.
4th step: open high voltage source, voltage is adjusted to 55kV, the environment temperature of spinning is 20 DEG C, humidity is 50%, by polymer solution with the rate of flooding electrostatic spinning of 7mL/h to reception base material 3 on, be arranged on the liquid nitrogen constant release device 5 received inside feeding device 4 simultaneously and discharge liquid nitrogen with the speed of 60L/min, the instantaneous temperature that institute's spinning nano fibre contacts with liquid nitrogen is down to less than 0 DEG C, nanofiber is subject to the reaction force contrary with its direction of motion simultaneously, thus without adhesion between acquisition fiber, fluffy three-dimensional netted interworking architecture efficient, low-resistance nanofiber electret filtering material, wherein the grammes per square metre of nanofiber layer is 32g/m
2the Surface electrostatic potential of nanofiber electret composite filter material is 3860V, hydrophobic angle 162 °, as shown in Figure 2, institute's spinning nano fibre electret filtering material can reach 99.9991% to the filter efficiency of 0.006-1 μm of particle, and have excellent Charge Storage Stability energy, pressure drag 5Pa, dust containing capacity is 2980g/m
2.
Embodiment 5
A kind of electrostatic spinning nano fiber electret filtering material and preparation method thereof, concrete steps are:
The first step: polyurethane particles, polyethylene glycol oxide powder and polyethersulfone granules to be placed under 70 DEG C of vacuum drying ovens dry 3 hours.
Second step: tourmaline is added in a certain amount of DMF solvent, and ultrasonic 5 hours, then polyurethane particles complete for drying, polyethylene glycol oxide powder and polyethersulfone granules are added in the DMF solvent containing tourmaline, above-mentioned solution is placed on magnetic stirring apparatus and stirs 10 hours respectively, form homogeneous phase solution; In described homogeneous phase solution, the mass fraction of polyurethane, polyethylene glycol oxide and polyether sulfone is 35%, and the ratio of three's mixing is 1:4:4, and tourmaline content is the 3wt% of polymer and inorganic nanoparticles total amount.
3rd step: use the Static Spinning equipment spinning shown in Fig. 1, the first a certain amount of above-mentioned polyurethane particles containing tourmaline of suction, polyethylene glycol oxide and polyether sulfone polymer mixed solution in spray silk module 1, and the attemperating unit 2 of spray silk module is adjusted to 100 DEG C, within constant 20 minutes, be heated to make polymer uniform, wherein spray silk module spinning nozzle is 35cm to the distance of reception base material, and institute's making alive is 65kV.
4th step: open high voltage source, voltage is adjusted to 65kV, the environment temperature of spinning is 25 DEG C, humidity is 40%, by polymer solution with the rate of flooding electrostatic spinning of 4mL/h to reception base material 3 on, be arranged on the liquid nitrogen constant release device 5 received inside feeding device 4 simultaneously and discharge liquid nitrogen with the speed of 45L/min, the instantaneous temperature that institute's spinning nano fibre contacts with liquid nitrogen is down to less than 0 DEG C, nanofiber is subject to the reaction force contrary with its direction of motion simultaneously, thus without adhesion between acquisition fiber, fluffy three-dimensional netted interworking architecture efficient, low-resistance nanofiber electret filtering material, wherein the grammes per square metre of nanofiber layer is 67g/m
2the Surface electrostatic potential of nanofiber electret composite filter material is 3220V, hydrophobic angle 164 °, as shown in Figure 2, institute's spinning nano fibre electret filtering material can reach 99.9998% to the filter efficiency of 0.006-1 μm of particle, and have excellent Charge Storage Stability energy, pressure drag 5Pa, dust containing capacity is 3420g/m
2.
Embodiment 6
A kind of electrostatic spinning nano fiber electret filtering material and preparation method thereof, concrete steps are:
The first step: pva powder, fluorinated polyurethane particle and polyethylene glycol oxide powder are placed in 70 DEG C of vacuum drying oven vacuumizes 3 hours respectively.
Second step: be dissolved in DMF by pva powder complete for drying, fluorinated polyurethane particle and polyethylene glycol oxide powder, is placed in described solution on magnetic stirring apparatus and stirs 10 hours respectively, forms homogeneous phase solution; In described homogeneous phase solution, the mass fraction of polyvinyl alcohol, fluorinated polyurethane and polyethylene glycol oxide is 20%, and the mixed proportion of three is 4:4:1.
3rd step: use the Static Spinning equipment spinning shown in Fig. 1, the first a certain amount of above-mentioned polyvinyl alcohol of suction, fluorinated polyurethane and polyethylene oxide polymer solution in spray silk module 1, and the attemperating unit 2 of spray silk module is adjusted to 100 DEG C, within constant 20 minutes, be heated to make polymer uniform, wherein spray silk module spinning nozzle is 30cm to the distance of reception base material, and institute's making alive is 40kV.
4th step: open high voltage source, voltage is adjusted to 40kV, the environment temperature of spinning is 28 DEG C, humidity is 55%, by polymer solution with the rate of flooding electrostatic spinning of 3mL/h to reception base material 3 on, be arranged on the liquid nitrogen constant release device 5 received inside feeding device 4 simultaneously and discharge liquid nitrogen with the speed of 40L/min, the instantaneous temperature that institute's spinning nano fibre contacts with liquid nitrogen is down to less than 0 DEG C, nanofiber is subject to the reaction force contrary with its direction of motion simultaneously, thus without adhesion between acquisition fiber, fluffy three-dimensional netted interworking architecture efficient, low-resistance nanofiber electret filtering material, wherein the grammes per square metre of nanofiber layer is 55g/m
2the Surface electrostatic potential of nanofiber electret composite filter material is 4270V, hydrophobic angle 159 °, as shown in Figure 2, institute's spinning nano fibre electret filtering material can reach 99.9997% to the filter efficiency of 0.006-1 μm of particle, and have excellent Charge Storage Stability energy, pressure drag 11Pa, dust containing capacity is 2590g/m
2.
Embodiment 7-27 preparation process is with embodiment 1, and wherein solution parameter, technological parameter and composite filter material performance parameter are as shown in table 1-2:
Table 1
Table 2
Embodiment 28-75 preparation process is with embodiment 2, and wherein solution parameter, technological parameter and composite filter material performance parameter are as shown in Table 3-6:
Table 3
Table 4
Table 5
Table 6
Embodiment 76-97 preparation process is with embodiment 3, and embodiment 98-99 preparation process is with embodiment 4, and wherein solution parameter, technological parameter and composite filter material performance parameter are as shown in table 7-8:
Table 7
Table 8
Embodiment 100-109 preparation process is with embodiment 5, and embodiment 109-110 preparation process is with embodiment 6, and wherein solution parameter, technological parameter and composite filter material performance parameter are as shown in table 9:
Table 9
Claims (9)
1. a preparation method for electrostatic spinning nano fiber electret filtering material, is characterized in that comprising the following steps:
1) electrostatic spinning is carried out after polymer solution being heated to 30 ~ 120 DEG C;
2) described electrostatic spinning gained fiber receive base material receive after below fast cooling to 0 DEG C, namely obtain electrostatic spinning nano fiber electret filtering material; When described fast cooling refers to that institute's spinning nano fibre is less than 1mm with the distance receiving base material, after nanofiber contacts with liquid nitrogen, within the time being less than 5s, be reduced to less than 0 DEG C;
In described polymer solution, polymer is Kynoar, polypropylene, polybutylene terephthalate, polyethylene terephthalate, polyarylate, polyvinyl acetate, nylon 6, polyvinyl alcohol, polymethyl methacrylate, polyaniline, polyethylene glycol oxide, polyvinylpyrrolidone, polyacrylonitrile, polycaprolactone, polyethylene glycol, polyurethane, fluorinated polyurethane, polysulfones, polyether sulfone, Kynoar-hexafluoropropene, Kynoar-tetrafluoroethylene-perfluoro methyl vinyl ether, one in Kynoar-CTFE, or the mixture of any two or three polymer, in wherein said polymer solution, solvent corresponds to respectively according to type of polymer:
Kynoar: DMF, 1-METHYLPYRROLIDONE, dimethylacetylamide, triethyl phosphate and dimethyl sulfoxide (DMSO);
Polypropylene: normal heptane, tetrahydrochysene fluoronaphthalene, dimethylbenzene;
Polybutylene terephthalate: carrene, oxolane (THF), chloroform, acetone;
Polyethylene terephthalate: carrene, oxolane, chloroform, acetone;
Polyarylate: carrene, oxolane, chloroform, acetone;
Polyvinyl acetate: toluene, acetone, ethanol, acetic acid, ethyl acetate, chloroform;
Nylon 6: formic acid;
Polyvinyl alcohol: water, ethanol, DMF, oxolane;
Polymethyl methacrylate: chloroform, acetic acid, ethyl acetate, acetone, toluene;
Polyaniline: DMF, 1-METHYLPYRROLIDONE;
Polyethylene glycol oxide: DMF, ethanol, water, chloroform;
Polyvinylpyrrolidone: water, ethanol, DMA, DMF;
Polyacrylonitrile: DMF, dimethyl sulfoxide (DMSO);
Polycaprolactone: DMF, acetone;
Polyethylene glycol: water, ethanol, DMF;
Polyurethane: DMF, acetone, 1-METHYLPYRROLIDONE;
Fluorinated polyurethane: DMF, acetone, 1-METHYLPYRROLIDONE;
Polysulfones and polyether sulfone: DMF, acetone, 1-METHYLPYRROLIDONE, dimethylacetylamide, oxolane;
Kynoar-hexafluoropropene: DMF, 1-METHYLPYRROLIDONE, dimethylacetylamide, triethyl phosphate and dimethyl sulfoxide (DMSO);
Kynoar-tetrafluoroethylene-perfluoro methyl vinyl ether: DMF, 1-METHYLPYRROLIDONE, dimethylacetylamide, triethyl phosphate and dimethyl sulfoxide (DMSO);
Kynoar-CTFE: DMF, 1-METHYLPYRROLIDONE, dimethylacetylamide, triethyl phosphate and dimethyl sulfoxide (DMSO);
The mixture solvent for use of above-mentioned any two or three polymer: the mixture of the solvent of single polymers can be dissolved in above-mentioned solvent respectively or the single solvent of two or three polymer can be dissolved simultaneously;
Polymer solution preparation process is: joined in corresponding solvent by polymer, and stir 3-20 hour continuously with magnetic stirring apparatus.
2. the preparation method of a kind of electrostatic spinning nano fiber electret filtering material according to claim 1, is characterized in that, the mass concentration of described polymer solution is 3 ~ 40%.
3. the preparation method of a kind of electrostatic spinning nano fiber electret filtering material according to claim 1 and 2, it is characterized in that, in described polymer solution, polymer comprises homopolymers, block copolymer, random copolymer, the mixture of two kinds of different homopolymers, homopolymers and the mixture of block copolymer and the mixture of homopolymers and random copolymer.
4. the preparation method of a kind of electrostatic spinning nano fiber electret filtering material according to claim 1, it is characterized in that, also containing at least one inorganic nanoparticles in described polymer solution, described inorganic nanoparticles is silica, alundum (Al2O3), zinc oxide, barium monoxide, titanium dioxide, tantalum pentoxide, barium titanate, lead zirconate titanate, silicon nitride, tourmaline, boehmite or silsesquioxane nano particle; Amount added by described inorganic nanoparticles is: 0.1 ~ 10wt% of polymer and inorganic nanoparticles total amount; Process for preparation is: first added in solvent by inorganic nanoparticles, and ultrasonic 0.5-15 hour, then polymer solution is added wherein, and stir 3-20 hour continuously with magnetic stirring apparatus, be mixed with even and stable solution.
5. the preparation method of a kind of electrostatic spinning nano fiber electret filtering material according to claim 1, is characterized in that, described heating refers to that polymer heats in the spray silk module of electrostatic spinning, namely sprays silk model calling one attemperating unit; Also containing online agitating device in described spray silk module.
6. the preparation method of a kind of electrostatic spinning nano fiber electret filtering material according to claim 1, it is characterized in that, the process conditions of described electrostatic spinning are: voltage 5 ~ 70kV, receiving range 3 ~ 40cm, rate of flooding 0.1 ~ 10mL/h, temperature 0 ~ 35 DEG C, relative humidity 0 ~ 90%.
7. the preparation method of a kind of electrostatic spinning nano fiber electret filtering material according to claim 1, is characterized in that, described reception base material is the fiber base material of wood pulp cellulose base material, fiber base material or mixing;
Wood pulp cellulose base material is deflection 0.5 ~ 5mNm, grammes per square metre 8 ~ 400g/m
2wood pulp cellulose filter paper or wood pulp cellulose non-weaving cloth, wood pulp cellulose filter paper is corrugation filter paper, and wherein the corrugation distance of cellulose corrugation filter paper is 0 ~ 3mm;
Fiber base material is containing cellulose fiber, polyester fiber, the filter paper of polyamide fiber or non-weaving cloth, and its deflection is 0.5 ~ 5mNm, and grammes per square metre is 6 ~ 350g/m
2; Fiber filter paper comprises corrugation filter paper, and wherein the corrugation distance of cellulose corrugation filter paper is 0 ~ 3mm;
The fiber base material of mixing is filter paper or the non-weaving cloth of the blended fiber of the two or more compositions in containing cellulose fiber, polyester fiber, polyamide fiber, and its deflection is for being 0.5 ~ 5mNm, and grammes per square metre is 6 ~ 350g/m
2, described blended fiber filter paper is corrugation filter paper, and wherein the corrugation distance of cellulose corrugation filter paper is 0mm ~ 3mm.
8. the preparation method of a kind of electrostatic spinning nano fiber electret filtering material according to claim 1, it is characterized in that, the mode of described cooling is provided with a liquid nitrogen constant release device in the back side 1 ~ 100mm distance of described reception base material, and rate of release is 1 ~ 100L/min.
9. the electrostatic spinning nano fiber electret filtering material that according to any one of above claim 1 ~ 8 prepared by preparation method, is characterized in that, described electrostatic spinning nano fiber electret filtering material is the two layer composite structure of substrate layer and nanofiber layer; The material of substrate layer is the fiber base material of the wood pulp cellulose base material of porous, fiber base material or mixing, and its fibre diameter is 10 ~ 50 μm, and aperture size is 3 ~ 120 μm; The nanofiber diameter of nanofiber layer: 0.008 ~ 1 μm, nanofiber layer grammes per square metre is: 0.01 ~ 70g/m
2, the porosity of nanofiber layer is>=80%; Described electrostatic spinning nano fiber compound electret filtering material Surface electrostatic potential is 800-6000V, hydrophobic angle > 150 °, can reach more than 99.999% to the filter efficiency of the particle of 0.006 ~ 1 μm, pressure drag is less than 20Pa, and dust containing capacity is 300 ~ 3600g/m
2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410452788.XA CN104289042B (en) | 2014-09-05 | 2014-09-05 | A kind of electrostatic spinning nano fiber electret filtering material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410452788.XA CN104289042B (en) | 2014-09-05 | 2014-09-05 | A kind of electrostatic spinning nano fiber electret filtering material and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104289042A CN104289042A (en) | 2015-01-21 |
| CN104289042B true CN104289042B (en) | 2016-04-20 |
Family
ID=52309132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410452788.XA Active CN104289042B (en) | 2014-09-05 | 2014-09-05 | A kind of electrostatic spinning nano fiber electret filtering material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104289042B (en) |
Families Citing this family (58)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104815485A (en) * | 2015-04-17 | 2015-08-05 | 华中师范大学 | Transparent charge nanofiber air filtering material and preparation method thereof |
| CN104801110B (en) * | 2015-04-17 | 2016-03-23 | 盐城工学院 | A kind of plush and nano electrostatic spin felt composite filtering material and preparation method thereof |
| CN104921342B (en) * | 2015-05-14 | 2016-08-17 | 青岛华世洁环保科技有限公司 | A kind of nanofiber MULTILAYER COMPOSITE filter face mask and preparation method thereof |
| CN105080220B (en) * | 2015-09-09 | 2016-08-31 | 江苏创云环保科技有限公司 | A kind of air filting material and its preparation method and application |
| CN107227502A (en) * | 2016-03-23 | 2017-10-03 | 张国勇 | A kind of electrostatic spinning formula of liquid of composite air filtering material |
| CN105803678A (en) * | 2016-04-18 | 2016-07-27 | 生纳科技(上海)有限公司 | Nanofiber membrane capable of filtering out impurities and preparation method and application thereof |
| CN105833744A (en) * | 2016-04-20 | 2016-08-10 | 清北高科（北京）科技有限公司 | Single-layer supporting multifunctional air filter membrane |
| CN105920919B (en) * | 2016-05-17 | 2018-07-10 | 华南理工大学 | A kind of preparation of super-hydrophobic electret filter for being used to purify PM2.5 and activation method |
| JP2018001063A (en) * | 2016-06-28 | 2018-01-11 | Jnc株式会社 | Filter medium and manufacturing method of the same |
| CN107587259A (en) * | 2016-07-06 | 2018-01-16 | 南京理工大学 | A kind of composite electrospun tunica fibrosa of high efficiency filter performance and preparation method thereof |
| CN106676752A (en) * | 2016-08-25 | 2017-05-17 | 仇颖超 | Preparation method of low-resistance composite air filter material |
| CN106521809B (en) * | 2016-10-17 | 2019-04-30 | 安徽工程大学 | A kind of functionality PMMA-MMT-TiO2The preparation method and applications of composite nano-fiber membrane |
| CN106567192A (en) * | 2016-10-25 | 2017-04-19 | 嘉善蓝欣涂料有限公司 | Method for preparing multifunctional health-care nanofiber membrane |
| CN106637668A (en) * | 2016-10-31 | 2017-05-10 | 安徽江威精密制造有限公司 | Electrostatic spinning capacitor diaphragm material capable of enhancing strength through silica sol cooperating with polymer |
| CN106521686A (en) * | 2016-11-07 | 2017-03-22 | 杭州同净环境科技有限公司 | Silica nanoparticle-loaded fiber electret material and preparation method thereof |
| CN106544786A (en) * | 2016-11-08 | 2017-03-29 | 铜陵市启动电子制造有限责任公司 | A kind of titanium doped modified Static Spinning diaphragm of supercapacitor material of lanthanum lithium |
| CN106367895A (en) * | 2016-11-08 | 2017-02-01 | 铜陵市启动电子制造有限责任公司 | Composite electrostatic spinning fiber diaphragm material with doped zirconia and compounded polyurethane |
| CN106835325B (en) * | 2017-02-16 | 2019-10-18 | 华南理工大学 | A kind of electromagnetism integration nanometer fibrous filter and its preparation and activation method |
| CN108939942A (en) * | 2017-05-19 | 2018-12-07 | 南京理工大学 | A kind of preparation method of composite membrane |
| CN107413325B (en) * | 2017-08-08 | 2019-10-29 | 东华大学 | A kind of rare earth/carbon co-doped flexibility TiO2Nano fibrous membrane and preparation method thereof |
| CN107377006B (en) * | 2017-08-08 | 2019-10-29 | 东华大学 | A kind of flexibility black TiO2Nano fibrous membrane and preparation method thereof |
| CN107475904B (en) * | 2017-08-08 | 2020-05-05 | 东华大学 | Flexible ordered mesoporous TiO2Nanofiber membrane and preparation method thereof |
| CN107441827B (en) * | 2017-08-17 | 2020-08-11 | 东华大学 | Multilayer electret nanofiber filtering material and preparation method thereof |
| CN108130603A (en) * | 2017-12-21 | 2018-06-08 | 河北工业大学 | A kind of preparation method and application for the polymer fiber for adding tourmaline nano particle |
| CN108425272B (en) * | 2018-02-26 | 2021-03-23 | 嘉兴学院 | Method for protecting paper document by adopting electrostatic spinning fiber membrane |
| CN108505388B (en) * | 2018-03-28 | 2019-12-10 | 华南理工大学 | Adjustable mixed nano-fibril filter paper and preparation method and application thereof |
| WO2019214581A1 (en) * | 2018-05-07 | 2019-11-14 | Honeywell Performance Materials And Technologies (China) Co., Ltd. | Poly-chlorotrifluoroethylene copolymer nanofibers, methods of manufacturing such nanofibers, and products made with such nanofibers |
| CN109166960A (en) * | 2018-08-23 | 2019-01-08 | 浙江理工大学 | A kind of preparation method of fiber base flexible piezoelectric sensors |
| CN109367165B (en) * | 2018-09-10 | 2020-09-29 | 中原工学院 | LiNbO3Anti-haze window screen with/PAN (polyacrylonitrile) composite nanofiber electret and preparation method of anti-haze window screen |
| CN109589684A (en) * | 2018-11-07 | 2019-04-09 | 嘉兴富瑞邦新材料科技有限公司 | A kind of fresh air system electret nanofiber filtration material and preparation method thereof |
| CN109569092A (en) * | 2018-11-07 | 2019-04-05 | 嘉兴富瑞邦新材料科技有限公司 | A kind of HVAC electret nanofiber filtration material and preparation method thereof |
| CN109364579A (en) * | 2018-11-07 | 2019-02-22 | 嘉兴富瑞邦新材料科技有限公司 | A kind of air purifier electret nanofiber filtration material and preparation method thereof |
| CN109589685A (en) * | 2018-11-07 | 2019-04-09 | 嘉兴富瑞邦新材料科技有限公司 | A kind of automobile air conditioner filter element electret nanofiber filtration material and preparation method thereof |
| CN111334935A (en) * | 2018-12-19 | 2020-06-26 | 上海精发实业股份有限公司 | Spunbonded filament electrostatic framework filter material and preparation method and application thereof |
| CN111364164A (en) * | 2018-12-25 | 2020-07-03 | 上海精发实业股份有限公司 | Multifunctional self-reinforced bicomponent filament electrostatic filtering material and preparation method and application thereof |
| CN109730378B (en) * | 2018-12-29 | 2021-11-23 | 青岛军融创新工程研究院有限公司 | PM2.5 protective mask with electrostatic spinning film and preparation method thereof |
| CN110253984B (en) * | 2019-06-19 | 2021-05-07 | 大连工业大学 | Electrostatic spinning nanofiber membrane-fabric composite coating material and preparation method thereof |
| CN110344127A (en) * | 2019-06-23 | 2019-10-18 | 浙江理工大学 | A kind of centrifugal spinning preparation method of porous Kynoar/polyethylene glycol oxide micro/nano-fibre |
| CN110237608A (en) * | 2019-07-04 | 2019-09-17 | 江苏中科睿赛污染控制工程有限公司 | A kind of air filting material and preparation method thereof and purposes |
| CN111111474B (en) * | 2019-12-23 | 2022-08-09 | 爱舍环境科技(成都)有限公司 | Medium for air filtration |
| CN110984827A (en) * | 2020-01-13 | 2020-04-10 | 中原工学院 | PU/Si3N4Electret nanofiber anti-haze window screen 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 |
| CN111495035B (en) * | 2020-02-28 | 2022-09-06 | 中科贝思达（厦门）环保科技股份有限公司 | Electret nanofiber air filtering material and preparation method thereof |
| CN111228892A (en) * | 2020-03-11 | 2020-06-05 | 上海市纺织科学研究院有限公司 | Preparation method of high-temperature-resistant electret filter material |
| CN111455474B (en) * | 2020-03-23 | 2022-04-08 | 东华大学 | Wool-like crimped electrostatic spinning nanofiber and preparation method thereof |
| CN113208206B (en) * | 2020-04-02 | 2023-06-27 | 北京化工大学 | Full-biodegradable mask and preparation method thereof |
| CN111501110A (en) * | 2020-04-16 | 2020-08-07 | 西北工业大学 | Preparation method of large-aperture electrostatic spinning nanofiber material |
| CN112779673B (en) * | 2021-01-05 | 2021-12-07 | 武汉纺织大学 | Multifunctional composite melt-blown non-woven fabric and preparation method thereof |
| CN113136631A (en) * | 2021-03-12 | 2021-07-20 | 宁波方太厨具有限公司 | Preparation method of conductive nanofiber, composite nanofiber filter screen and preparation method thereof |
| CN113181711A (en) * | 2021-04-26 | 2021-07-30 | 苏州和塑美科技有限公司 | Degradable nanofiber air filtering material and preparation method thereof |
| CN113265769B (en) * | 2021-05-10 | 2022-09-09 | 东营俊富净化科技有限公司 | High-quality electric cotton non-woven fabric material and preparation method thereof |
| CN113457477A (en) * | 2021-08-13 | 2021-10-01 | 南方科技大学台州研究院 | Nanofiber filtering membrane and preparation method and application thereof |
| CN114504951B (en) * | 2022-01-24 | 2023-09-22 | 华南理工大学 | Recyclable electret filter membrane and preparation method, cleaning and charge regeneration method thereof |
| CN114642973B (en) * | 2022-03-14 | 2022-11-25 | 中纺院（浙江）技术研究院有限公司 | Air filtering material with temperature and humidity response performance and preparation and application thereof |
| CN114892338A (en) * | 2022-05-11 | 2022-08-12 | 中广核研究院有限公司 | Nanofiber membrane and preparation method and application thereof |
| CN115006917B (en) * | 2022-06-13 | 2024-04-26 | 昆承新材料科技(江苏)有限公司 | Fluffy nano filter material and preparation method and application thereof |
| CN115538181A (en) * | 2022-11-04 | 2022-12-30 | 广东省美净滤清器有限公司 | Efficient fade-resistant electret filter material for dust removal and preparation method thereof |
| CN116949682B (en) * | 2023-06-03 | 2024-01-26 | 广东爱航环境科技有限公司 | Non-woven fabric for deodorizing and antibacterial air purifier and preparation method thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6375886B1 (en) * | 1999-10-08 | 2002-04-23 | 3M Innovative Properties Company | Method and apparatus for making a nonwoven fibrous electret web from free-fiber and polar liquid |
| CN201765960U (en) * | 2010-04-15 | 2011-03-16 | 群扬材料工业股份有限公司 | Polymer electricity conserving thin film |
| CN102505357A (en) * | 2011-09-22 | 2012-06-20 | 东华大学 | Electrostatic spinning melt blowing composite non-woven material for filtering blood and preparation method of electrostatic spinning melt blowing composite non-woven material |
| CN103785231B (en) * | 2014-03-08 | 2016-10-12 | 广州市三泰汽车内饰材料有限公司 | A kind of air filter |
-
2014
- 2014-09-05 CN CN201410452788.XA patent/CN104289042B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104289042A (en) | 2015-01-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104289042B (en) | A kind of electrostatic spinning nano fiber electret filtering material and preparation method thereof | |
| Gao et al. | Recent progress and challenges in solution blow spinning | |
| Raghavan et al. | Electrospun polymer nanofibers: The booming cutting edge technology | |
| Dadol et al. | Solution blow spinning (SBS) and SBS-spun nanofibers: Materials, methods, and applications | |
| Stojanovska et al. | A review on non-electro nanofibre spinning techniques | |
| CN102242464B (en) | Polymer-ceramic compound nanometer fibrous membrane as well as preparation method and application thereof | |
| CN101905974B (en) | Electrostatic spinning preparation method of ceramic nanometer composite fibers | |
| CN107195894A (en) | A kind of metal carbon nano-fiber composite material and its preparation method and application | |
| WO2015027769A1 (en) | Novel enhancing electrostatic spinning nanofiber membrane, producing method thereof, and device applied to method | |
| CN1367276A (en) | Method for producing fine fibrous polymer fabric | |
| CN106310782A (en) | Nano-fiber filtering membrane, nano-fiber composite filtering membrane and preparation method thereof | |
| CN106480518B (en) | A kind of preparation method of electrostatic spinning collection device and gradient orientations structure nano fiber | |
| CN109589684A (en) | A kind of fresh air system electret nanofiber filtration material and preparation method thereof | |
| CN109569092A (en) | A kind of HVAC electret nanofiber filtration material and preparation method thereof | |
| CN109152969A (en) | Filter filtration material and its manufacturing method | |
| CN102817178A (en) | Method for improving heat stability and mechanical property of polyvinyl alcohol nanofiber membrane | |
| CN109589685A (en) | A kind of automobile air conditioner filter element electret nanofiber filtration material and preparation method thereof | |
| CN102134787A (en) | Preparation method of polymer nanofiber material in alveolate arrangement | |
| CN113046925B (en) | Polyvinylidene fluoride superfine nanofiber membrane and preparation method thereof | |
| CN106621840B (en) | A kind of function filtering material capable of releasing far infrared ray and preparation method thereof | |
| CN109364579A (en) | A kind of air purifier electret nanofiber filtration material and preparation method thereof | |
| CN104928789B (en) | Electrostatic spinning combination anti-solvent technology prepares porous nano-fibre and preparation method | |
| KR101033278B1 (en) | Improved preparation method of PVA nanofiber membrane using electrospinning | |
| KR101223431B1 (en) | 3-Dimensional nanofiber scaffold and the producing method thereof | |
| CN105561371A (en) | Grid-structure dressing capable of being broken up by water to be abandoned and preparation process thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |