CN103774343A - Manufacturing method for nano acrylic fiber non-woven fabric - Google Patents
Manufacturing method for nano acrylic fiber non-woven fabric Download PDFInfo
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- CN103774343A CN103774343A CN201410068387.4A CN201410068387A CN103774343A CN 103774343 A CN103774343 A CN 103774343A CN 201410068387 A CN201410068387 A CN 201410068387A CN 103774343 A CN103774343 A CN 103774343A
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- polyacrylonitrile
- nonwoven fabric
- acrylic fibers
- formaldehyde
- receiving barrel
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Abstract
The invention relates to a manufacturing method for nano acrylic fiber non-woven fabric. Polyacrylonitrile (PAN) particles are dissolved in N-N dimethyl formamide (DMF) to prepare a polyacrylonitrile solution with the mass percentage as 12-16%. Then the prepared polyacrylonitrile solution is injected into a multi-nozzle electrostatic spinning device, the voltage is adjusted to be 18-28 kV, the polyacrylonitrile solution is pulled to form nanoscale polyacrylonitrile fiber wound on a rotating metal receiving barrel, and nano acrylic fiber non-woven fabric 3-5mm in thickness and even in distribution is obtained. The obtained nano acrylic fiber non-woven fabric is large in specific surface area, good in adsorption capacity, capabl of absorbing indoor formaldehyde, thorough in absorption and high in removing efficiency and can meet the indoor requirement for removing harmful gas like formaldehyde.
Description
Technical field
The present invention relates to a kind of preparation method of filtering material, specifically a kind of preparation method of nanometer acrylic fibers nonwoven fabric.
Background technology
At present, the article material of absorption formaldehyde is sold in market, and great majority are activated carbon granule, ozone purification, negative oxygen ion purification, formaldehyde scavenger, photocatalyst purification etc.Active carbon not only will pass through special processing to increase its specific surface, thereby reaches the adsorptivity on higher degree, and absorption is short effective time, once the state that reaches capacity, if do not changed, the formaldehyde of its absorption is got back to again air.Ozone is a kind of strong oxidizing property gas, can effectively remove formaldehyde, but because the diffusivity of ozone is poor, so its effective range of removing formaldehyde is very little, therefore for indoor whole space, the efficiency that ozone is removed formaldehyde is not high.Ozone concentration is too high simultaneously, can produce stench.Negative oxygen ion can make the gas molecule Quick Oxidations such as formaldehyde become anion, and can be reduced into oxygen, water, carbon dioxide after air effect, but the aerial life-span of negative oxygen ion is very short, therefore little for removing in air formaldehyde effect.Formaldehyde scavenger is that passive nano negative ion powder has tourmaline to process, and is mainly a kind of boracic, the silicate mineral of chemical composition complexity.Its major defect is that product object is single, is merely able to adsorb formaldehyde, and effective acting time while is short, can not play permanent removal formaldehyde effect.The most frequently used photocatalyst material is titanium dioxide, photocatalyst material, under the effect of ultraviolet light, generates the oxonium ion free radical with strong oxidizing property, can be carbon dioxide and water by harmful substance oxidation Decomposition such as formaldehyde effectively, but its equipment price is comparatively expensive, is unfavorable for marketing.
Summary of the invention
Technical problem to be solved by this invention is to overcome above-mentioned the deficiencies in the prior art, provide a kind of rational in infrastructure, preparation technology is simple, specific area is large, absorption fully, can meet nanometer acrylic fibers nonwoven fabric that the removal of the pernicious gases such as indoor PARA FORMALDEHYDE PRILLS(91,95) requires and preparation method thereof.
The technical scheme that the present invention solves the problems of the technologies described above employing is: a kind of preparation method of nanometer acrylic fibers nonwoven fabric, first, polyacrylonitrile (PAN) particle is dissolved in N-N dimethyl formamide (DMF), be made into the polyacrylonitrile solution that mass percent is 12-16%, and then the polyacrylonitrile solution preparing is injected in multi-nozzle electrospinning device, adjust voltage value 18kV-28kV, under electric field action, pull into nanoscale polyacrylonitrile fibre, and be wrapped on the metal receiving barrel of rotation the nanometer acrylic fibers nonwoven fabric that the thickness that obtains being evenly distributed is 3-5mm.
The polyacrylonitrile fibre diameter that electrostatic spinning of the present invention pulls into is 150-200nm, and specific area is 150-210m
2/ g.
The diameter of described metal receiving barrel is 100-150mm, and the rotating speed of receiving barrel is 20r/min-40r/min.
Nanometer acrylic fibers nonwoven fabric of the present invention is that polyacrylonitrile (PAN) solution electrospinning process prepares, gained acrylic fiber diameter 150-200nm, and the prepared nanometer acrylic fibers of the present invention nonwoven fabric, specific area is large, has stronger adsorption capacity.Adsorbable removal indoor formaldehyde, absorption fully, can meet the removal requirement of the pernicious gases such as indoor PARA FORMALDEHYDE PRILLS(91,95).
The specific embodiment
Below in conjunction with embodiment, the present invention will be further described.
A preparation method for nanometer acrylic fibers nonwoven fabric, first, is dissolved in polyacrylonitrile (PAN) particle in N-N dimethyl formamide (DMF), is made into the polyacrylonitrile solution that mass percent is 12-16%, is put in the shady and cool place of sealing and leaves standstill 24 hours.And then the polyacrylonitrile solution preparing is injected in multi-nozzle electrospinning device, adjust voltage value 18kV-28kV, under electric field action, pull into nanoscale polyacrylonitrile fibre, and be wrapped on the metal receiving barrel of rotation, the nanometer acrylic fibers nonwoven fabric that the thickness that obtains being evenly distributed is 3-5mm.Nanometer acrylic fibers nonwoven fabric is taken off from metal dash receiver, can be cut into regular shape.Thereby obtain removing the acrylic fibers nonwoven fabric of indoor formaldehyde.
The diameter of described metal receiving barrel is 100-150mm, and the rotating speed of receiving barrel is 20r/min-40r/min.In the time that the rotating speed of cylinder is too low, make polyacrylonitrile fibre can not uniform winding on rotating cylinder, bulk deposition somewhere; In the time that the rotating speed of cylinder is too high, polyacrylonitrile nanofiber can not continuous winding on rotating cylinder, gained nonwoven fabric skewness.
It is 18kV-28kV that the present invention adopts multi-nozzle electrospinning device setting voltage value, because being forms potential difference to form electric field between shower nozzle and metal receiving barrel, under the effect of electric field, pulls into nano-scale fiber.In the time that voltage value is too low, because electric field force is too small, is not enough to form nanofiber, or can not makes Filament-wound Machine to metal receiving barrel; In the time that voltage value is too high, will make the nanofiber of formation disorderly in electric field, cause fiber not to be wrapped in well on metal receiving barrel, but disorderly fly in equipment, make it stick to other places.Only have continuous spinning more than 5 hours can form certain thickness nonwoven fabric, certain spinning time is longer, and the nonwoven fabric forming is also thicker, and in order to save goods and materials, its specific area of the nonwoven fabric that spinning obtains for 8 hours is 150-210m
2/ g.。
Electrostatic spinning of the present invention is that charged Polymer Solution or melt are flowed or distortion in electrostatic field, then the curing fibrous material that obtains of solvent evaporation or melt cooling.Spinning solution ejects from syringe needle, under electric field action, pulls into nano-scale fiber, and the metal that is wrapped in rotation connects on receiving barrel, forms gradually nonwoven fabric.
The polyacrylonitrile fibre diameter that described electrostatic spinning of the present invention pulls into is 150-200nm, and specific area is 150-210m
2/ g.
Nanometer acrylic fibers nonwoven fabric of the present invention is that polyacrylonitrile (PAN) solution electrospinning process prepares, gained acrylic fiber diameter 150-200nm, and the prepared nanometer acrylic fibers of the present invention nonwoven fabric, specific area is large, has stronger adsorption capacity.Adsorbable removal indoor formaldehyde, absorption fully, can meet the removal requirement of the pernicious gases such as indoor PARA FORMALDEHYDE PRILLS(91,95).
The specific surface of nanometer acrylic fibers nonwoven fabric of the present invention is far longer than active carbon, porosity prosperity, and therefore its adsorption effect is far superior to active carbon.There is good application prospect.Because the specific area of nanometer acrylic fibers nonwoven fabric is high, in the time of a certain amount of formaldehyde of absorption, a small amount of acrylic fibers nonwoven fabric also can play removal effect to a great extent.And its adsorptivity is high, just can be attached on wall without any need for auxiliary.Therefore, can be attached to the mural painting back side, seat bottom surface, so neither be affected the attractive in appearance of these ornaments, also do not taken up room.Certainly in order more effectively to remove indoor formaldehyde, can be made into wallpaper and be attached on wall.Because the granularity of pigment is Nano grade, be less than nanometer acrylic fiber diameter, so just wallpaper can be made to various colors, be no longer dull white.Nanometer acrylic fibers nonwoven fabric can be cut into various shapes, draws different patterns with paint ink on acrylic fibers nonwoven fabric, and the ornament of making so just can directly be attached on wall, is a kind of novel upholstery, both effective, and environmental protection is again also attractive in appearance.
Embodiment 1: a kind of preparation method of nanometer acrylic fibers nonwoven fabric, first polyacrylonitrile powder is dissolved in N-N dimethyl formamide (DMF) solution, make mass percent and be 10% polyacrylonitrile solution, be put in the shady and cool place of sealing and leave standstill 24 hours.The polyacrylonitrile solution preparing is injected in electrospinning device, setting voltage value is 18kV, the rotating speed of receiving barrel is 30r/min, continuous spinning 8 hours, under electric field action, pull into nanoscale polyacrylonitrile fibre, and be wrapped on the metal receiving barrel of rotation the nanometer acrylic fibers nonwoven fabric that the thickness that obtains being evenly distributed is 3-5mm.Nanometer acrylic fibers nonwoven fabric is taken off from metal dash receiver, can be cut into regular shape.Thereby obtain removing the acrylic fibers nonwoven fabric of indoor formaldehyde.The thickness of acrylic fibers nonwoven fabric is 5mm, and polyacrylonitrile nanofiber diameter is 150-200nm, and specific area is 193m
2/ g.
Above-mentioned nanometer acrylic fibers nonwoven fabric is put into the container that contains formaldehyde, and concentration of formaldehyde is 1.0218mg/m
3.Place after 24 hours, the concentration of formaldehyde recording in container is 0.06-0.10mg/m
3, the result successful obtaining, shows nanometer acrylic fibers nonwoven fabric degree removal formaldehyde greatly.
Embodiment 2: a kind of preparation method of nanometer acrylic fibers nonwoven fabric, first polyacrylonitrile powder is dissolved in N-N dimethyl formamide (DMF) solution, make mass percent and be 12% polyacrylonitrile solution, be put in the shady and cool place of sealing and leave standstill 24 hours.The polyacrylonitrile solution preparing is injected in electrospinning device, setting voltage value is 20kV, the rotating speed of receiving barrel is 30r/min, continuous spinning 6 hours, under electric field action, pull into nanoscale polyacrylonitrile fibre, and be wrapped on the metal receiving barrel of rotation the nanometer acrylic fibers nonwoven fabric that the thickness that obtains being evenly distributed is 3-5mm.Nanometer acrylic fibers nonwoven fabric is taken off from metal dash receiver, can be cut into regular shape.Thereby obtain removing the acrylic fibers nonwoven fabric of indoor formaldehyde.The thickness of acrylic fibers nonwoven fabric is 4mm, and polyacrylonitrile nanofiber diameter is 150-200nm, and specific area is 199m
2/ g.
Nanometer acrylic fibers nonwoven fabric is put into the container that contains formaldehyde, and wherein concentration of formaldehyde is 1.0245mg/m
3, to place after 24 hours, the concentration of formaldehyde recording in container is 0.03-0.06 mg/m
3, the result successful obtaining, shows nanometer acrylic fibers nonwoven fabric degree removal formaldehyde greatly.
Embodiment 3: a kind of preparation method of nanometer acrylic fibers nonwoven fabric, first polyacrylonitrile powder is dissolved in N-N dimethyl formamide (DMF) solution, make mass percent and be 14% polyacrylonitrile solution, be put in the shady and cool place of sealing and leave standstill 24 hours.
The polyacrylonitrile solution preparing is injected in homemade electrospinning device, setting voltage value is 24kV, the rotating speed of receiving barrel is 30r/min, continuous spinning 6 hours, under electric field action, pull into nanoscale polyacrylonitrile fibre, and be wrapped on the metal receiving barrel of rotation the nanometer acrylic fibers nonwoven fabric that the thickness that obtains being evenly distributed is 3-5mm.Nanometer acrylic fibers nonwoven fabric is taken off from metal dash receiver, can be cut into regular shape.Thereby obtain removing the acrylic fibers nonwoven fabric of indoor formaldehyde.The thickness of acrylic fibers nonwoven fabric is 4mm, and polyacrylonitrile nanofiber diameter is 150-200nm, and specific area is 210m
2/ g.
Above-mentioned nanometer acrylic fibers nonwoven fabric is put into the container that contains formaldehyde, and wherein concentration of formaldehyde is 1.0115mg/m
3.Place after 24 hours, the concentration of formaldehyde recording in container is 0.03-0.06 mg/m
3, the result successful obtaining, shows nanometer acrylic fibers nonwoven fabric degree removal formaldehyde greatly.
Claims (3)
1. the preparation method of a nanometer acrylic fibers nonwoven fabric, first, polyacrylonitrile particle is dissolved in N-N dimethyl formamide, be made into the polyacrylonitrile solution that mass percent is 12-16%, and then the polyacrylonitrile solution preparing is injected in multi-nozzle electrospinning device, adjust voltage value 18kV-28kV, under electric field action, pull into nanoscale polyacrylonitrile fibre, and be wrapped on the metal receiving barrel of rotation the nanometer acrylic fibers nonwoven fabric that the thickness that obtains being evenly distributed is 3-5mm.
2. air cleaning filtering material according to claim 1, is characterized in that: the polyacrylonitrile nanofiber diameter that described electrostatic spinning pulls into is 150-200nm, and specific area is 150-210m
2/ g.
3. air cleaning filtering material according to claim 1, is characterized in that: the diameter of described metal receiving barrel is 100-150mm, and the rotating speed of receiving barrel is 20r/min-40r/min.
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| CN201410068387.4A CN103774343A (en) | 2014-02-27 | 2014-02-27 | Manufacturing method for nano acrylic fiber non-woven fabric |
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| CN201410068387.4A CN103774343A (en) | 2014-02-27 | 2014-02-27 | Manufacturing method for nano acrylic fiber non-woven fabric |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108049032A (en) * | 2017-11-24 | 2018-05-18 | 湖州织里创塑塑料科技有限公司 | A kind of preparation method of the non-woven fabrics with strong negative ion releasing function |
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| CN102586920A (en) * | 2012-01-17 | 2012-07-18 | 苏州大学 | Preparation method of polyacrylonitrile nanometer fibers |
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2014
- 2014-02-27 CN CN201410068387.4A patent/CN103774343A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20070059233A1 (en) * | 2005-08-31 | 2007-03-15 | Kyou-Yoon Sheem | Carbon material having high surface area and conductivity and preparation method thereof |
| CN101275294A (en) * | 2006-10-20 | 2008-10-01 | 北京服装学院 | Method for preparing ion-exchange fiber by solution electrostatic spinning method |
| CN101185851A (en) * | 2007-08-29 | 2008-05-28 | 浙江大学 | Affinity vinyl cyanide base co-polymer superfine fibre film preparation method and application |
| CN101215736A (en) * | 2008-01-16 | 2008-07-09 | 浙江大学 | Glycosyl modified acrylonitrile group nano fibre and its preparing method and application |
| CN102140705A (en) * | 2010-12-24 | 2011-08-03 | 吉林大学 | Method for preparing thioamide-based chelating nanofiber for adsorbing heavy metal ions |
| CN102517670A (en) * | 2011-11-08 | 2012-06-27 | 上海理工大学 | Method for preparing polyacrylonitrile nano-fibers by circulation and coaxial electrospinning of surface active agent solution |
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| CN108049032A (en) * | 2017-11-24 | 2018-05-18 | 湖州织里创塑塑料科技有限公司 | A kind of preparation method of the non-woven fabrics with strong negative ion releasing function |
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Application publication date: 20140507 |