CN104921342B - A kind of nanofiber MULTILAYER COMPOSITE filter face mask and preparation method thereof - Google Patents
A kind of nanofiber MULTILAYER COMPOSITE filter face mask and preparation method thereof Download PDFInfo
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- CN104921342B CN104921342B CN201510244465.6A CN201510244465A CN104921342B CN 104921342 B CN104921342 B CN 104921342B CN 201510244465 A CN201510244465 A CN 201510244465A CN 104921342 B CN104921342 B CN 104921342B
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Abstract
The invention discloses a kind of nanofiber MULTILAYER COMPOSITE filter face mask and preparation method thereof, first polymer nanofiber is dissolved in a solvent by it, prepares polymer nanofiber solution；Then polymer nanofiber is coated in by electrostatic spinning apparatus by polymer nanofiber solution the one or both sides of support base material, obtains monomer material；Finally monomer material is combined, obtains multilayer materials.The present invention supports base material as support frame, can effectively keep apart finer and close layers of nanofibers, reduces resistance；MULTILAYER COMPOSITE can make it ensure to reach while lower drag higher filtration effect simultaneously；Nanofiber mouth mask of the present invention can intercept the particulate matter in air, and good permeability, and the structure of multilayer improves filter efficiency.
Description
Technical field
The invention belongs to commodity technical field, be specifically related to a kind of functional mouth mask.
Background technology
Along with economic develops rapidly, the living standard of the people is greatly improved, but also brings while economic development
The severeest environmental problem, that discharges owing to burning during industrial production, daily generating and motor vehicle exhaust emission etc. is a large amount of
The reasons such as residue and the such as volcano eruption of various natural calamity, make the particle concentration in air be greatly increased, particularly PM2.5
Particle (diameter fines thing less than 2.5um in air), it has important impact to air quality and visibility etc..With
Thicker Atmospheric particulates are compared, and fine particle particle diameter is little, during rich in substantial amounts of poisonous and harmful substances and stop in an atmosphere
Between long, fed distance remote, thus the impact on health and atmosphere quality is bigger.Research shows, particle is the least to people
The harm of body health is the biggest.Fine particle can waft to place farther out, and therefore coverage is bigger.
In order to prevent the infringement to human body of this fine particle, mouth mask has become the necessary article in people's life, and current mouth mask is main
The material of application is traditional non-weave non-woven fabrics, the diameter of this material about tens microns, and aperture is relatively big, can only filter bigger
Particle, poor to the filter effect of fine particle, it is impossible to meet the demand of people.
Polymer nanofiber be diameter tens to hundreds of nanometer superfine fibres, specific surface area is big, and aperture is little, can be effective
Filtration fine particle, as CN104106854A discloses a kind of nanofiber mouth mask, its layers of nanofibers selected polystyrene,
The polymer such as polythiaether, acrylic resin, and, layers of nanofibers is relied between layer at supporting layer and nanofiber, for list
Rotating fields, although it can play the effect of filtration, but, traditional individual layer nanofiber ensure certain filter efficiency time,
Resistance there has also been bigger raising, makes mouth mask level of comfort reduce, easily feels oppressed.
Summary of the invention
The purpose of the application is to provide a kind of multi-layer nano fiber filter material for preparing by the way of MULTILAYER COMPOSITE, and will
This material is used for mouth mask, and this material makes mouth mask have preferable strainability to have preferable gas permeability simultaneously.
One of task of the present invention is to provide the preparation method of a kind of nanofiber mouth mask.
A kind of preparation method of nanofiber mouth mask, its be with polymer nanofiber and support base material as raw material, it includes successively
Following steps:
Polymer nanofiber is dissolved in a solvent, prepares the step of polymer nanofiber solution；
Polymer nanofiber is coated in the side or two of support base material by polymer nanofiber solution by electrostatic spinning apparatus
Side, obtains the step of monomer material；
Being combined by described monomer material, obtain the step of multilayer materials, wherein, multilayer materials is 2-5 layer.
Above by electrostatic spinning process, polymer nanofiber is coated in the one or both sides of support base material, can coat uniformly,
Further, being combined by monomer material, obtain multilayer materials, multilayer materials elects 2-5 layer as, wherein supports base material conduct
Support frame, can effectively keep apart finer and close layers of nanofibers, reduces resistance；MULTILAYER COMPOSITE can make it protect simultaneously
Higher filter efficiency is reached while card lower drag.
As a preferred version of the present invention, described polymer nanofiber be nylon 6, Kynoar, polyacrylonitrile or
One in polyvinyl alcohol or any two kinds；Described solvent be DMF, 1-METHYLPYRROLIDONE, water,
The mixture of one or more in ethanol, anhydrous formic acid or acetic acid；Described support base material is melt spraying non-woven fabrics, spun-bonded non-woven fabrics
Or needle punched non-woven fabrics.
As another preferred version of the present invention, in described electrostatic spinning apparatus coating procedure, its voltage is 6-10 ten thousand volts, connects
Receipts distance is 250-300mm, and the base material speed of service is 100-1000mm/min.
Preferably, the mass concentration of described polymer nanofiber solution is 10-30%.
Preferably, a diameter of 50-100nm of polymer nanofiber in described multilayer materials.
Preferably, any two during described polymer nanofiber is nylon 6, Kynoar, polyacrylonitrile or polyvinyl alcohol
Kind, and, different polymer nanofibers is coated in the both sides supporting base material.
Use different polymer nanofibers can prepare the nanofiber in different-diameter and aperture, then carry out MULTILAYER COMPOSITE,
Higher filter efficiency is ensured while can also effectively reducing the resistance of composite.
Preferably, the specification of described support base material is 5-30gsm.
Preferably, described polymer nanofiber is nylon 6 and Kynoar, and, by electrostatic spinning apparatus by nylon
6 are coated in the side supporting base material, and the opposite side that Kynoar is coated in support base material obtains composite monomer, then
Carry out gained composite monomer being combined and obtain two-layer composite.
The two of the task of the present invention are to provide the nanofiber mouth mask that above-mentioned preparation method prepares.
The Advantageous Effects that the present invention is brought:
The present invention, by using electrostatic spinning apparatus to be combined by monomer material, can reach higher filtration effect while reducing resistance
Rate, in order to reach less resistance, the coating of Inventive polymers nanofiber is relatively thin, grammes per square metre about 0.1-1gsm, MULTILAYER COMPOSITE
When material is chosen to be 2-5 layer, filter efficiency is up to more than 90%.
Polymer nanofiber is chosen to be nylon 6 and Kynoar, and, by electrostatic spinning apparatus, nylon 6 is coated
In the side supporting base material, the opposite side that Kynoar is coated in support base material obtains composite monomer, then by gained
Composite monomer carries out compound obtaining two-layer composite, and after tested, the filter efficiency of this two-layer composite can reach
97%, resistance is about 12mmH2O。
Nanofiber mouth mask of the present invention can intercept the particulate matter in air, and good permeability, and the structure of multilayer improves filtration effect
Rate.
Detailed description of the invention
The invention discloses a kind of nanofiber combined filtration mouth mask, in order to make advantages of the present invention, technical scheme clearer,
Clearly, below in conjunction with specific embodiment, the present invention done the clearest, complete explanation.
Primary raw material polymer nanofiber selected by the present invention such as nylon 6, Kynoar, polyacrylonitrile or polyvinyl alcohol, institute
Select solvent all can be commercially available by commercial channel.
Support base material selected by the present invention is melt spraying non-woven fabrics, spun-bonded non-woven fabrics or needle punched non-woven fabrics, and it is in prior art
Finished product, supporting coated polymer nanofiber on the two sides of base material or one side, one polymer nanofiber of coating
Supporting base material, its coated side is positioned at outside, owing to polymer nanofiber aperture is little, i.e. may filter that the harmful substance in air；
The present invention is preferably coated with polymer nanofiber, and the polymer nano of the coating of two sides in two sides supporting base material
Rice kinds of fibers is different, and the aperture of different polymer nanofibers is different, through following embodiment experimental verification, supports base material two
Individual side coats the polymer nanofiber filter efficiency that different polymer nanofibers is more identical than two the sides coatings of support base material
High.
In following embodiment, test to the filter efficiency of filtering material uses the 8130AFT automatic filtrate test of Technical Sourcing Internation
Instrument；Test condition is for using 0.3um sodium chloride aerosol particle, and flow is 85L/min, and test area is 100cm2。
Embodiment 1:
The present invention, the preparation method of a kind of nanofiber MULTILAYER COMPOSITE filter face mask, it specifically includes following steps:
Step 1, by dried nylon 6 grain dissolution in anhydrous formic acid solvent, be configured to the polymer that mass fraction is 15%
Nanofiber solution；
Step 2, being added in electrostatic spinning apparatus by the polymer nanofiber solution in step 1, voltage is 100,000 volts, receives
Distance is 290mm, selects PP spun-bonded non-woven fabrics for receiving base material, and the speed of service of base material is 450mm/min, obtains spunbond nothing
Spinning the monomer material of cloth and polymer nanofiber, wherein the diameter of polymer nanofiber is about 60nm；
Step 3, above-mentioned monomer material is carried out three layers be combined, obtain 3-layer composite material, after tested, this 3-layer composite material
Filter efficiency can reach 90%, resistance is about 9mmH2O, meets the requirement of GB GB2626-2006.
Embodiment 2:
The present invention, the preparation method of a kind of nanofiber MULTILAYER COMPOSITE filter face mask, it specifically includes following steps:
Step 1, by dried nylon 6 grain dissolution in anhydrous formic acid solvent, be configured to the polymer that mass fraction is 15%
Solution；
Step 2, being added in electrostatic spinning apparatus by the polymer nanofiber solution in step 1, voltage is 100,000 volts, receives
Distance is 290mm, selects melt spraying non-woven fabrics for receiving base material, and the speed of service of base material is 400mm/min, to melt spraying non-woven fabrics
One side is coated, and obtains the monomer material of melt spraying non-woven fabrics and polymer nanofiber；
Step 3, the opposite side of the monomer material of above-mentioned coating side is carried out again the coating of polymer nanofiber, method and step
Rapid 2 identical, obtain two sides after coating and be coated with the composite of polymer nanofiber, the present embodiment selects same
Polymer nanofiber is coated in the both sides of melt spraying non-woven fabrics, and after tested, the filter efficiency of this composite can reach 94%,
Resistance is about 11mmH2O, meets the requirement of GB GB2626-2006.
Embodiment 3:
The present invention, the preparation method of a kind of nanofiber MULTILAYER COMPOSITE filter face mask, it specifically includes following steps:
Step 1, by dried nylon 6 grain dissolution in anhydrous formic acid solvent, be configured to the polymer that mass fraction is 15%
Solution, referred to as polymer nanofiber solution one；Load weighted PVDF is dissolved in N,N-dimethylformamide (DMF) solvent
In, it is configured to the polymer solution that mass fraction is 18%, referred to as polymer nanofiber solution two；
Step 2, first joining in electrostatic spinning apparatus by polymer nanofiber solution one, voltage is 100,000 volts, receive away from
From being reception base material for 290mm, PP non-woven fabrics, the speed of service of base material is 450mm/min, obtains nylon 6 and PP non-woven fabrics
Monomer material one, wherein a diameter of about 60nm of nylon 6/nanometer fiber；
Step 3, joining in electrostatic spinning apparatus by polymer nanofiber solution two, voltage is 100,000 volts, and receiving range is
290mm, PP non-woven fabrics is for receiving base material, and the speed of service of base material is 450mm/min, obtains the monomer of PVDF Yu PP non-woven fabrics
Material two, wherein, the diameter of PVDF nanofiber is about about 200nm；
Step 4, the monomer material of the above-mentioned PVDF of being respectively coated with and PA6 is carried out two-layer being combined, after tested, this two-layer is multiple
The filter efficiency of condensation material can reach 97%, and resistance is about 12mmH2O, meets the requirement of GB GB2626-2006.
Embodiment 4:
The present invention, the preparation method of a kind of nanofiber MULTILAYER COMPOSITE filter face mask, it specifically includes following steps:
Step 1, by dried nylon 6 grain dissolution in anhydrous formic acid solvent, be configured to the polymer that mass fraction is 15%
Solution, referred to as polymer nanofiber solution one；By load weighted PVA heating for dissolving in pure water, being configured to mass fraction is
The polymer solution of 12%, referred to as polymer nanofiber solution two；
Step 2, first joining in electrostatic spinning apparatus by polymer nanofiber solution one, voltage is 100,000 volts, receive away from
From being reception base material for 290mm, PP non-woven fabrics, the speed of service of base material is 450mm/min, obtains nylon 6 and PP non-woven fabrics
Monomer material one, wherein a diameter of about 60nm of nylon 6/nanometer fiber；
Step 3, joining in electrostatic spinning apparatus by polymer nanofiber solution two, voltage is 100,000 volts, and receiving range is
290mm, PP non-woven fabrics is for receiving base material, and the speed of service of base material is 450mm/min,；Obtain the monomer of PVA Yu PP non-woven fabrics
Material two, wherein, the diameter of PVA nanofiber is about about 300nm；
Step 4, the monomer material of the above-mentioned PA6 of being respectively coated with and PVA is carried out two-layer being combined, after tested, this two-layer is multiple
The filter efficiency of condensation material can reach 95%, and resistance is about 10mmH2O, meets the requirement of GB GB2626-2006.
For different monomer materials being complex as three layers, four layers, five layers, all can realize under the guide of technique scheme.
It should be noted that those of ordinary skill in the art is under the enlightenment of the present invention, without departing from the claims in the present invention institute
Under the ambit of protection, it is also possible to making the various deformation such as replacement, simple combination, the scope that is claimed of the present invention should be with institute
Attached claim is as the criterion.
Claims (7)
1. a preparation method for nanofiber mouth mask, it is with polymer nanofiber and to support base material as raw material, it is characterised in that bag
Include following steps:
Polymer nanofiber is dissolved in a solvent, prepares the step of polymer nanofiber solution；
Polymer nanofiber is coated in the both sides of support base material by polymer nanofiber solution by electrostatic spinning apparatus, obtains
The step of monomer material；
Being combined by described monomer material, obtain the step of multilayer materials, wherein, multilayer materials is 2-5 layer；
Described polymer nanofiber is any two kinds in nylon 6, Kynoar, polyacrylonitrile or polyvinyl alcohol, and,
Different polymer nanofibers is coated in the both sides supporting base material.
The preparation method of nanofiber mouth mask the most according to claim 1, it is characterised in that: described electrostatic spinning apparatus is coated
Cheng Zhong, its voltage is 6-10 ten thousand volts, and receiving range is 250-300mm, and the base material speed of service is 15-100mm/min.
The preparation method of nanofiber mouth mask the most according to claim 1, it is characterised in that: described polymer nanofiber solution
Mass concentration be 10-30%.
The preparation method of nanofiber mouth mask the most according to claim 1, it is characterised in that: described multilayer materials is polymerized
A diameter of 50-100nm of thing nanofiber.
The preparation method of nanofiber mouth mask the most according to claim 1, it is characterised in that: the specification of described support base material is
5-30gsm。
The preparation method of nanofiber mouth mask the most according to claim 1, it is characterised in that: described polymer nanofiber is Buddhist nun
Dragon 6 and Kynoar, and, by electrostatic spinning apparatus, nylon 6 is coated in the side of support base material, by polyvinylidene fluoride
Alkene is coated in the opposite side of support base material and obtains monomer material, is then combined by gained monomer material, obtains two-layer composite.
7. the nanofiber mouth mask prepared according to the preparation method described in any one of claim 1-6.
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| CN106639844A (en) * | 2016-11-15 | 2017-05-10 | 生纳科技(上海)有限公司 | Anti-haze window gauze and preparation method 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 |
| CN111387609A (en) * | 2020-04-24 | 2020-07-10 | 河南曼博睿新材料科技有限公司 | Nanofiber membrane protective mask and manufacturing method thereof |
| CN111501199B (en) * | 2020-04-24 | 2021-07-30 | 广西宝菱康医疗器械有限公司 | Gradient electrostatic spinning composite fiber material for N95 mask |
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| CN1460534A (en) * | 2003-05-28 | 2003-12-10 | 东南大学 | Nano fibre protective filtering material and its preparation method |
| JP4815310B2 (en) * | 2006-09-20 | 2011-11-16 | 日本バイリーン株式会社 | Electrospun nonwoven fabric and method for producing electrospun nonwoven fabric |
| EP2537798A1 (en) * | 2011-06-21 | 2012-12-26 | ETH Zurich | Method for the generation of nanoparticle composite films and films made using such a method |
| CN202385779U (en) * | 2011-12-02 | 2012-08-22 | 震峰强奈米科技有限公司 | Multilayer mask |
| CN104289042B (en) * | 2014-09-05 | 2016-04-20 | 东华大学 | A kind of electrostatic spinning nano fiber electret filtering material and preparation method thereof |
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