CN103706182A - Spherical and linear combined compound fiber air filtering material and preparation method thereof - Google Patents
Spherical and linear combined compound fiber air filtering material and preparation method thereof Download PDFInfo
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- CN103706182A CN103706182A CN201310674542.2A CN201310674542A CN103706182A CN 103706182 A CN103706182 A CN 103706182A CN 201310674542 A CN201310674542 A CN 201310674542A CN 103706182 A CN103706182 A CN 103706182A
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Abstract
The invention discloses a spherical and linear combined compound fiber air filtering material and a preparation method thereof. The spherical and linear combined compound fiber air filtering material comprises interlace-arranged electro-spun polysulfone fibers and silica nano-particles inlaid on the surfaces of the electro-spun polysulfone fibers. The preparation method comprises the following steps: adding the silica nano-particles into a polysulfone spinning liquid having a mass fraction of 15-25% to obtain a composite spinning liquid, and collecting electro-spun polysulfone fibers with the surfaces inlaid with the silica nano-particles on the surface of aluminum foil of a receiving roller through an electro-spinning machine having a plurality of parallel nozzles to obtain the spherical and linear combined compound fiber air filtering material. The spherical and linear combined compound fiber air filtering material has a high filtering efficiency on dusts in air, and a low pressure drop.
Description
Technical field
the present invention relates to a kind of air filting material, combined composite fibre air filting material of especially a kind of ball line and preparation method thereof.
Background technology
in air, dust is one of main pollution sources, especially in industrial area and public social places, its concentration is surprising, and conventionally carry disease germs in dust, seriously jeopardize the mankind's health, therefore must carry out filtration, purification, high accuracy operation area in addition, as: the air cleaning in the clean room in microelectronics workshop and optical engineering workshop is also absolutely necessary.Conventionally adopt airfiltering method to reduce dust in air, air filtration is exactly a kind of operation separated, that trapping is scattered in airborne particulate, and utilize electrospinning process can obtain diameter, be tens or the porous fiber film that forms of the nano-scale fiber of hundreds of nanometer, pulp freeness is large, the porosity of film is high, is well suited for as filtering material.At present, the research of electrostatic spinning nano fiber air filting material is to take conventional filtration media as base cloth mostly, directly nanofiber is deposited on base cloth, forms the composite filter material that nanofiber layer and conventional filtration media form.Leung finds can increase filter efficiency at the laminated micrometer fibers felt in nanofiber mats surface, and pressure drop is less than pure nanofiber mats.The people such as Shin have prepared glass fibre/nanofiber composite filter material, add a small amount of nanofiber and just can improve the arresting efficiency of glass fiber filter material, but Pressure Drop also can increase.Qin etc. spread the nanofiber of different surface densities on spunbond and non-weaving cloth that melt and spray, and after nanofiber spins on non-woven base fabric, its filter efficiency improves, but Pressure Drop also obviously increases.Agne etc. are compound by PVA nano fibrous membrane and polypropylene nonwoven, and along with the increase of nanofiber film thickness, filter efficiency improves gradually.Patanaik, Leung etc. cover polyethylene glycol oxide (PEO) nanofiber in non-weaving cloth substrate and form composite filter material.The first electrospinning such as Wang goes out polyacrylonitrile (PAN) fibrage and PVA nanofiber is covered form above composite filter material again.Vitchuli etc. have deposited polyamide 66 nanofiber in 50/50 polyamide 6/cotton supatex fabric substrate, and when fiber accumulations density increases, filter efficiency improves.Above-mentioned research is all that the electrostatic spinning nano fiber of single diameter and common non-weaving cloth are compounded to form to air filting material, although filter efficiency increases, but the Pressure Drop in filter process also increases thereupon, in filter efficiency 30%, on the melt-blowing nonwoven of Pressure Drop 35Pa, cover 2.4g/m at present
2
nanofiber after, filter efficiency can reach more than 99.9%, but Pressure Drop also reaches 1530Pa, how by the method for electrostatic spinning, to prepare high-efficient low-resistance type nano-fiber composite material has become one of focus of paying close attention in filtering material field.
Summary of the invention
the present invention seeks to: provide a kind of filter efficiency high, Pressure Drop is little, and the combined composite fibre air filting material of ball line of efficient low-resistance and preparation method thereof.
technical scheme of the present invention is: the combined composite fibre air filting material of a kind of ball line, comprises staggered Static Spinning polysulfone fibre and the silicon dioxide nanosphere that is embedded in described Static Spinning polysulfone fibre surface.
further, the diameter of described Static Spinning polysulfone fibre is 500 ~ 2200nm, and the diameter of described silicon dioxide nanosphere is 300 ~ 900nm.
further, the porosity of the combined composite fibre air filting material of this ball line is 80 ~ 87%, and average pore size is 0.5 μ m ~ 6.5 μ m, to the aerocolloidal filter efficiency of quantity median diameter 75nmNaCl, is 99 ~ 99.99%, and pressure is reduced to 150 ~ 500Pa.
the preparation method of the combined composite fibre air filting material of above-mentioned ball line, comprises the following steps:
1) the polysulfones spinning solution that preparation mass fraction is 15% ~ 25%, in this polysulfones spinning solution, add silicon dioxide nanosphere again, the quality of this silicon dioxide nanosphere is 0.5% ~ 6% of this polysulfones spinning solution quality, then, after at room temperature stirring by constant temperature blender with magnetic force, obtain composite spinning liquid;
2) described composite spinning liquid is poured in several injection needle tubes, again these several injection needle tubes are put into multiple spray head static spinning machine successively, with copper bar, each shower nozzle is communicated with, again the positive pole of high-voltage DC power supply is connected with copper bar, negative pole receives cylinder with metal and is connected also ground connection, start this multiple spray head static spinning machine, at the aluminium foil surface that receives cylinder, collect the Static Spinning polysulfone fibre that surface inserting has silicon dioxide nanosphere;
3) after spinning, surface at aluminium foil forms one deck electrostatic spinning fiber film, it is at room temperature placed and is fully volatilized to solvent for 24 ~ 72 hours, again electrostatic spinning fiber film is taken off from aluminium foil surface, then heat treatment 60 ~ 180 minutes at 190 ℃, obtains the combined composite fibre air filting material of ball line of structure and stable performance.
further, the solvent of described polysulfones spinning solution is the mixed solution of dimethyl formamide and acetone, and the mass ratio of described dimethyl formamide and described acetone is 9:1.
further, spinning voltage during described multiple spray head static spinning machine work is 15 ~ 30kV, and spinning distance is 10 ~ 20cm, spinning solution flow 1.0 ~ 2.5mL/h, the traversing distance 10 ~ 25cm of syringe, syringe transverse moving speed 10 ~ 30cm/min.
advantage of the present invention is: the combined composite fibre air filting material of this ball line, the fiber and the nanoscale microballoon that by diameter, are hundreds of nanometers or 1 ~ 2 micron combine, the microballoon of fiber surface can increase material specific area, reduce interfibrous hole, thereby increase the absorption of dust in air and interdiction capability, make this composite filter material there is higher filterability and lower Pressure Drop, although effectively overcome the defect that the higher Pressure Drop of composite filter material filter efficiency of existing electrostatic spinning fiber and non-weaving cloth formation is very large.
Accompanying drawing explanation
below in conjunction with drawings and Examples, the invention will be further described:
fig. 1 is the scanning electron microscope diagram of the combined composite fibre air filting material of ball line of embodiment mono-;
fig. 2 is the scanning electron microscope diagram of the combined composite fibre air filting material of ball line of embodiment bis-;
fig. 3 is the scanning electron microscope diagram of the combined composite fibre air filting material of ball line of embodiment tri-;
fig. 4 is the scanning electron microscope diagram of the combined composite fibre air filting material of ball line of embodiment tetra-.
The specific embodiment
embodiment mono-: with the polysulfones particle that electronic balance takes 5g, being dissolved in 20g mass ratio is in the dimethyl formamide of 9:1 and the mixed solution of acetone, and at room temperature stir with accelerate dissolution by constant temperature blender with magnetic force, prepare mass percent and be 20% polysulfones spinning solution; With electronic balance, take 1.5g silicon dioxide nanosphere, add in above-mentioned 25g polysulfones spinning solution, after at room temperature stirring, obtain composite spinning liquid by constant temperature blender with magnetic force, the diameter of this silicon dioxide nanosphere is 900nm; Described composite spinning liquid is poured in several injection needle tubes, again these several injection needle tubes are put into multiple spray head static spinning machine successively, adjustment spinning voltage is 20kV, spinning distance is 14cm, spinning solution flow 1.5mL/h, syringe is traversing apart from 17cm, and transverse moving speed 30cm/min starts this multiple spray head static spinning machine; At the aluminium foil surface that receives cylinder, collect the Static Spinning polysulfone fibre that surface inserting has silicon dioxide nanosphere; After spinning, surface at aluminium foil forms one deck electrostatic spinning fiber film, at room temperature place 24 hours, again electrostatic spinning fiber film is taken off from aluminium foil surface, then heat treatment 120 minutes at 190 ℃, obtaining structure and stable performance and thickness is the combined composite fibre air filting material of ball line of 100.0 μ m, and Fig. 1 is the scanning electron microscope diagram of the combined composite fibre air filting material of ball line of the present embodiment one.
this thickness is that the porosity of the combined composite fibre air filting material of ball line of 100.0 μ m is 85.7%, and average pore size 5.58 μ m are 99.84% to the aerocolloidal filter efficiency of quantity median diameter 75nm, Pressure Drop 330Pa.
embodiment bis-: with the polysulfones particle that electronic balance takes 5g, being dissolved in 20g mass ratio is in the dimethyl formamide of 9:1 and the mixed solution of acetone, and at room temperature stir with accelerate dissolution by constant temperature blender with magnetic force, prepare mass percent and be 20% polysulfones spinning solution; With electronic balance, take 1g silicon dioxide nanosphere, add in above-mentioned 25g polysulfones spinning solution, after at room temperature stirring, obtain composite spinning liquid by constant temperature blender with magnetic force, the diameter of this silicon dioxide nanosphere is 300nm; Described composite spinning liquid is poured in several injection needle tubes, again these several injection needle tubes are put into multiple spray head static spinning machine successively, adjustment spinning voltage is 21kV, spinning distance is 15cm, spinning solution flow 1.0mL/h, syringe is traversing apart from 18cm, and transverse moving speed 28cm/min starts this multiple spray head static spinning machine; At the aluminium foil surface that receives cylinder, collect the Static Spinning polysulfone fibre that surface inserting has silicon dioxide nanosphere; After spinning, surface at aluminium foil forms one deck electrostatic spinning fiber film, at room temperature place 36 hours, again electrostatic spinning fiber film is taken off from aluminium foil surface, then heat treatment 180 minutes at 190 ℃, obtaining structure and stable performance and thickness is the combined composite fibre air filting material of ball line of 96.1 μ m, and Fig. 2 is the scanning electron microscope diagram of the combined composite fibre air filting material of ball line of the present embodiment two.
this thickness is that the porosity of the combined composite fibre air filting material of ball line of 96.1 μ m is 86.1%, and average pore size 6.01 μ m are 99.97% to the aerocolloidal filter efficiency of quantity median diameter 75nm, Pressure Drop 302Pa.
embodiment tri-: with the polysulfones particle that electronic balance takes 3.75g, being dissolved in 21.25g mass ratio is in the dimethyl formamide of 9:1 and the mixed solution of acetone, and at room temperature stir with accelerate dissolution by constant temperature blender with magnetic force, prepare mass percent and be 15% polysulfones spinning solution; With electronic balance, take 1.0g silicon dioxide nanosphere, add in above-mentioned 25g polysulfones spinning solution, after at room temperature stirring, obtain composite spinning liquid by constant temperature blender with magnetic force, the diameter of this silicon dioxide nanosphere is 600nm; Described composite spinning liquid is poured in several injection needle tubes, again these several injection needle tubes are put into multiple spray head static spinning machine successively, adjustment spinning voltage is 20kV, spinning distance is 18cm, spinning solution flow 1.0mL/h, syringe is traversing apart from 18cm, and transverse moving speed 30cm/min starts this multiple spray head static spinning machine; At the aluminium foil surface that receives cylinder, collect the Static Spinning polysulfone fibre that surface inserting has silicon dioxide nanosphere; After spinning, surface at aluminium foil forms one deck electrostatic spinning fiber film, at room temperature place 24 hours, again electrostatic spinning fiber film is taken off from aluminium foil surface, then heat treatment 120 minutes at 190 ℃, obtaining structure and stable performance and thickness is the combined composite fibre air filting material of ball line of 95.0 μ m, and Fig. 3 is the scanning electron microscope diagram of the combined composite fibre air filting material of ball line of the present embodiment three.
this thickness is that the porosity of the combined composite fibre air filting material of ball line of 95.0 μ m is 86.3%, and average pore size 5.91 μ m are 99.71% to the aerocolloidal filter efficiency of quantity median diameter 75nm, Pressure Drop 292Pa.
embodiment tetra-: with the polysulfones particle that electronic balance takes 6.25g, being dissolved in 18.75g mass ratio is in the dimethyl formamide of 9:1 and the mixed solution of acetone, and at room temperature stir with accelerate dissolution by constant temperature blender with magnetic force, prepare mass percent and be 25% polysulfones spinning solution; With electronic balance, take 1.0g silicon dioxide nanosphere, add in above-mentioned 25g polysulfones spinning solution, after at room temperature stirring, obtain composite spinning liquid by constant temperature blender with magnetic force, the diameter of this silicon dioxide nanosphere is 300nm; Described composite spinning liquid is poured in several injection needle tubes, again these several injection needle tubes are put into multiple spray head static spinning machine successively, adjustment spinning voltage is 20kV, spinning distance is 15cm, spinning solution flow 2.5mL/h, syringe is traversing apart from 16cm, and transverse moving speed 30cm/min starts this multiple spray head static spinning machine; At the aluminium foil surface that receives cylinder, collect the Static Spinning polysulfone fibre that surface inserting has silicon dioxide nanosphere; After spinning, surface at aluminium foil forms one deck electrostatic spinning fiber film, at room temperature place 24 hours, again electrostatic spinning fiber film is taken off from aluminium foil surface, then heat treatment 180 minutes at 190 ℃, obtaining structure and stable performance and thickness is the combined composite fibre air filting material of ball line of 102.0 μ m, and Fig. 4 is the scanning electron microscope diagram of the combined composite fibre air filting material of ball line of the present embodiment four.
this thickness is that the porosity of the combined composite fibre air filting material of ball line of 102.0 μ m is 83.6%, and average pore size 4.13 μ m are 99.92% to the aerocolloidal filter efficiency of quantity median diameter 75nm, Pressure Drop 341Pa.
fig. 1 ~ 4 are respectively the scanning electron microscope diagrams of four kinds of combined composite fibre air filting materials of ball line of embodiment mono-~ embodiment tetra-, by Fig. 1 ~ 4, can see that the surface inserting of fiber has a certain amount of silicon dioxide nanosphere, and it is more even to distribute, the existence of these Nano microspheres has increased the surface area of fiber, this fiber filter material is further improved the adsorption capacity of dust in air, and under the similar condition of tunica fibrosa thickness, the filter efficiency of adding the combined fiber air filting material of ball line improves, Pressure Drop decline (referring to table 1).
the strainability comparison of the combined tunica fibrosa of table 1 ball line and single polysulfone fibre film
| Sample | Sample thickness/μ m | Filter efficiency/% | Pressure Drop/Pa |
| Static Spinning polysulfone fibre film | 99.0 | 97.23 | 498 |
| Embodiment mono-(Static Spinning polysulfone fibre/900nm microballoon) | 100.0 | 99.84 | 330 |
| Embodiment bis-(Static Spinning polysulfone fibre/300nm microballoon) | 96.1 | 99.97 | 302 |
| Embodiment tri-(Static Spinning polysulfone fibre/600nm microballoon) | 95.0 | 99.71 | 292 |
| Embodiment tetra-(Static Spinning polysulfone fibre/300nm microballoon) | 102.0 | 99.92 | 341 |
certainly above-described embodiment is only explanation technical conceive of the present invention and feature, and its object is to allow person skilled in the art can understand content of the present invention and implement according to this, can not limit the scope of the invention with this.All modifications that the Spirit Essence of main technical schemes is done according to the present invention, within all should being encompassed in protection scope of the present invention.
Claims (6)
1. the combined composite fibre air filting material of ball line, is characterized in that, comprises staggered Static Spinning polysulfone fibre, and the silicon dioxide nanosphere that is embedded in described Static Spinning polysulfone fibre surface.
2. the combined composite fibre air filting material of ball line according to claim 1, is characterized in that, the diameter of described Static Spinning polysulfone fibre is 500 ~ 2200nm, and the diameter of described silicon dioxide nanosphere is 300 ~ 900nm.
3. the combined composite fibre air filting material of ball line according to claim 1, it is characterized in that, the porosity of the combined composite fibre air filting material of this ball line is 80 ~ 87%, average pore size is 0.5 μ m ~ 6.5 μ m, to the aerocolloidal filter efficiency of quantity median diameter 75nmNaCl, be 99 ~ 99.99%, pressure is reduced to 150 ~ 500Pa.
4. a preparation method for the combined composite fibre air filting material of ball line as claimed in claim 1, is characterized in that, comprises the following steps:
1) the polysulfones spinning solution that preparation mass fraction is 15% ~ 25%, in this polysulfones spinning solution, add silicon dioxide nanosphere again, the quality of this silicon dioxide nanosphere is 0.5% ~ 6% of this polysulfones spinning solution quality, then, after at room temperature stirring by constant temperature blender with magnetic force, obtain composite spinning liquid;
2) described composite spinning liquid is poured in several injection needle tubes, again these several injection needle tubes are put into multiple spray head static spinning machine successively, with copper bar, each shower nozzle is communicated with, again the positive pole of high-voltage DC power supply is connected with copper bar, negative pole receives cylinder with metal and is connected also ground connection, start this multiple spray head static spinning machine, at the aluminium foil surface that receives cylinder, collect the Static Spinning polysulfone fibre that surface inserting has silicon dioxide nanosphere;
3) after spinning, surface at aluminium foil forms one deck electrostatic spinning fiber film, it is at room temperature placed and is fully volatilized to solvent for 24 ~ 72 hours, again electrostatic spinning fiber film is taken off from aluminium foil surface, then heat treatment 60 ~ 180 minutes at 190 ℃, obtains the combined composite fibre air filting material of ball line of structure and stable performance.
5. the preparation method of the combined composite fibre air filting material of ball line according to claim 4, it is characterized in that, the solvent of described polysulfones spinning solution is the mixed solution of dimethyl formamide and acetone, and the mass ratio of described dimethyl formamide and described acetone is 9:1.
6. the preparation method of the combined composite fibre air filting material of ball line according to claim 4, it is characterized in that, spinning voltage during described multiple spray head static spinning machine work is 15 ~ 30kV, spinning distance is 10 ~ 20cm, spinning solution flow 1.0 ~ 2.5mL/h, the traversing distance 10 ~ 25cm of syringe, syringe transverse moving speed 10 ~ 30cm/min.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105749767A (en) * | 2015-07-22 | 2016-07-13 | 东华大学 | Electrostatic-spinning nano fiber air filter material and preparation method thereof |
| CN105908364A (en) * | 2016-06-16 | 2016-08-31 | 南通那芙尔服饰有限公司 | Oil-water separation fiber membrane |
| CN108823806A (en) * | 2018-06-29 | 2018-11-16 | 南通朝旭环保科技有限公司 | Electrostatic spinning micro/nano-fiber material for air filtration |
| CN112755651A (en) * | 2020-12-31 | 2021-05-07 | 东华大学 | Multi-combination functional electrostatic spinning submicron fiber air filter material and preparation thereof |
| CN114950008A (en) * | 2022-06-10 | 2022-08-30 | 东华大学 | High-temperature-resistant electrostatic spinning micro-nano structure air filtering material and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1891325A (en) * | 2002-01-31 | 2007-01-10 | 科斯洛技术公司 | Nanofiber filter media |
| CN102227247A (en) * | 2008-12-05 | 2011-10-26 | 纳幕尔杜邦公司 | Filter media with nanoweb layer |
| CN102695552A (en) * | 2009-11-19 | 2012-09-26 | 纳幕尔杜邦公司 | Filtration media for high humidity environments |
| US20130037481A1 (en) * | 2010-04-22 | 2013-02-14 | 3M Innovative Properties Company | Nonwoven nanofiber webs containing chemically active particulates and methods of making and using same |
-
2013
- 2013-12-12 CN CN201310674542.2A patent/CN103706182A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1891325A (en) * | 2002-01-31 | 2007-01-10 | 科斯洛技术公司 | Nanofiber filter media |
| CN102227247A (en) * | 2008-12-05 | 2011-10-26 | 纳幕尔杜邦公司 | Filter media with nanoweb layer |
| CN102695552A (en) * | 2009-11-19 | 2012-09-26 | 纳幕尔杜邦公司 | Filtration media for high humidity environments |
| US20130037481A1 (en) * | 2010-04-22 | 2013-02-14 | 3M Innovative Properties Company | Nonwoven nanofiber webs containing chemically active particulates and methods of making and using same |
Non-Patent Citations (1)
| Title |
|---|
| 王丹飞等: "静电纺粗细复合纤维形态与膜的结构及性能", 《纺织学报》, vol. 34, no. 8, 15 August 2013 (2013-08-15) * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105749767A (en) * | 2015-07-22 | 2016-07-13 | 东华大学 | Electrostatic-spinning nano fiber air filter material and preparation method thereof |
| CN105908364A (en) * | 2016-06-16 | 2016-08-31 | 南通那芙尔服饰有限公司 | Oil-water separation fiber membrane |
| CN108823806A (en) * | 2018-06-29 | 2018-11-16 | 南通朝旭环保科技有限公司 | Electrostatic spinning micro/nano-fiber material for air filtration |
| WO2020000619A1 (en) * | 2018-06-29 | 2020-01-02 | 樊璠 | Electrostatic spinning micro-nano fiber material for air filtration |
| CN112755651A (en) * | 2020-12-31 | 2021-05-07 | 东华大学 | Multi-combination functional electrostatic spinning submicron fiber air filter material and preparation thereof |
| CN114950008A (en) * | 2022-06-10 | 2022-08-30 | 东华大学 | High-temperature-resistant electrostatic spinning micro-nano structure air filtering material and preparation method thereof |
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Application publication date: 20140409 |