CN108159779A - A kind of filtering material and the air filter unit based on the filtering material - Google Patents
A kind of filtering material and the air filter unit based on the filtering material Download PDFInfo
- Publication number
- CN108159779A CN108159779A CN201810138453.9A CN201810138453A CN108159779A CN 108159779 A CN108159779 A CN 108159779A CN 201810138453 A CN201810138453 A CN 201810138453A CN 108159779 A CN108159779 A CN 108159779A
- Authority
- CN
- China
- Prior art keywords
- fiber
- silk fibroin
- filtering material
- fibroin nano
- nano
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/08—Filter cloth, i.e. woven, knitted or interlaced material
- B01D39/083—Filter cloth, i.e. woven, knitted or interlaced material of organic material
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
- A41D13/05—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches protecting only a particular body part
- A41D13/11—Protective face masks, e.g. for surgical use, or for use in foul atmospheres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0001—Making filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/54—Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms
- B01D46/546—Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms using nano- or microfibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/02—Types of fibres, filaments or particles, self-supporting or supported materials
- B01D2239/025—Types of fibres, filaments or particles, self-supporting or supported materials comprising nanofibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/04—Additives and treatments of the filtering material
- B01D2239/0414—Surface modifiers, e.g. comprising ion exchange groups
- B01D2239/0428—Rendering the filter material hydrophobic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
- B01D2239/0604—Arrangement of the fibres in the filtering material
- B01D2239/0631—Electro-spun
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/10—Filtering material manufacturing
Abstract
The present invention provides a kind of silk fibroin nano-fiber filtering material and the air filter unit based on the filtering material.The silk fibroin nano-fiber filtering material of the present invention is the method by vapor deposition, volatile lyophobic dust fluorinated silane, chlorinated silane are grafted on into silk fibroin nano-fiber film surface and obtained, has many advantages, such as that environmental protection, respiratory resistance is low and filter efficiency is high.
Description
Technical field
The present invention relates to a kind of silk fibroin nano-fiber filtering material and the air filtration based on the filtering material is set
It is standby.
Background technology
In recent years, air pollution especially particulate air pollution (haze) is as important environmental problem, wherein PM2.5
And more little particle can enter human body alveolar, enter other organs even across cell membrane, and serious threat is generated to human health.Such as
What effective progress haze protection receives significant attention, and developing the novel PM2.5 protective masks of efficient low-resistance becomes the market demand.
With the development of nanometer technology, electrostatic spinning technique becomes the main method for preparing nanofiber, and electrostatic spinning is received
Rice fiber has many advantages, such as large specific surface area, adsorption capacity is strong, can effectively improve the mistake of fine particle as air filting material
Efficiency is filtered, and passes through nano-scale distinctive " longitudinal slip effect " to reduce air drag.Existing nanofiber filtration material is more
For chemical synthesis copolymer or carbon nanotube and graphene-based material, these nanofibers do not know there are toxicity, prepared
Journey pollutes the environment or generates harm etc. to human body, and for daily protective mask, there may be problems.
Nanofiber filtration material also there are problems that filter efficiency and low-drag can not be taken into account, be asked to solve this
Topic, employs various methods in the prior art, for example, a kind of masks of CN201510009971.7 high-efficiency low-resistance nano fiber sky
Gas filtering material and preparation method thereof uses sandwich structure, and levels are the layers of nanofibers of uniform cylindrical form, intermediate
Layers of nanofibers with a beading.For another example, titanium dioxide is added in a polymer solution, it is obtained after electrostatic spinning
There is porous structure in fiber environmental microbes, increase its filter efficiency, and filtration resistance declines.But all there are processes for above-mentioned technique
The problems such as cumbersome, production efficiency is relatively low, and cost increases, the uniformity of nanofiber membrane pores and the bad strainability of film.
As the natural protein fiber for having been used thousands of years, silk be a kind of abundance, edible, bio-compatible,
Environmental-friendly renewable natural material.Silk is mainly made of fibroin and silk gum, and it is total to account for about silk as main component for fibroin
The 70%-80% of weight.The fibroin that will be obtained after natural silk degumming prepares nanofiber for air by electrostatic spinning technique
Filtering material has larger market value.But there is chance water contraction in mulberry silk, fiber weakness is big, and poor mechanical property etc. is asked
Topic.Various methods are employed in the prior art to solve the problems, such as this, for example, the mixed with polymers such as silk protein liquid and nylon 6, come
Ensure that composite silk fibre shrinkage is small, the problem of dimensionally stable；Also fibroin albumen and gelatin or hyaluronic acid etc. are mixed
And it adds crosslinking agent and improves the flexible fragility of fibroin albumen and stability to prepare blend film.CN201610539592.3 bases
In the air filter unit of silk nanofiber, but its filter efficiency under high humidity environment is unstable, and filter efficiency declines, resistance to
It is poor with property, it is not suitable for long-term use.The problems such as above method all exists not environmentally, complex process, and since mask used
For a long time in hygrothermal environment in journey, fibroin fiber is poor in hygrothermal environment stability inferior, is directly used as the filtering of mask
The problems such as material is poor there are hydrothermal stability, and filter efficiency, respiratory resistance are undesirable.Therefore, it is necessary to a kind of fibroins
Protein nano fiber filter material, can meet that environmental requirement, filter efficiency be high, mask of good permeability.
Invention content
An object of the present invention is to provide a kind of silk fibroin nano-fiber filtering material.
The second object of the present invention is to provide a kind of preparation method of silk fibroin nano-fiber filtering material.
The third object of the present invention is to provide a kind of mask using silk fibroin nano-fiber as filtering material.
Present invention employs following technical solution, a kind of silk fibroin nano-fiber filtering material is obtained by electrostatic spinning
To silk fibroin nano-fiber, by the method for vapor deposition, by volatile lyophobic dust, such as fluorinated silane, chlorinated silane
Etc. silk fibroin nano-fiber film surface is grafted on, silk fibroin nano-fiber filtering material is obtained.
Preferably, trim,ethylchlorosilane is deposited on silk fibroin nano-fiber surface 30-120min, Ke Yiwei
30min, 60min, 90min, 120min etc..
Preferably, the grammes per square metre of silk fibroin nano-fiber is 50g/m2Hereinafter, it is preferred that 10g/m2Hereinafter, further preferably 2g/m2
Hereinafter, more preferably 0.1~1.5g/m2。
Preferably, the silk fibroin nano-fiber diameter is in the range of 100~800nm, preferably 120~780nm ranges
It is interior.
A kind of preparation method of silk fibroin nano-fiber filtering material, which is characterized in that
(1), silk removing silk gum is obtained into fibroin fiber；
(2), by dissolving in the solution, desalination obtains spinning solution；
(3), obtained spinning solution is subjected to electrostatic spinning, obtains silk fibroin nano-fiber；
(4), by the method for vapor deposition, volatile lyophobic dust, such as fluorinated silane, chlorinated silane are grafted on
Silk fibroin nano-fiber film surface obtains silk fibroin nano-fiber filtering material.
Preferably, trim,ethylchlorosilane is deposited on silk fibroin nano-fiber surface 30-120min, Ke Yiwei
30min, 60min, 90min, 120min etc..
Preferably, the grammes per square metre of silk fibroin nano-fiber is 50g/m2Hereinafter, it is preferred that 10g/m2Hereinafter, further preferably 2g/m2
Hereinafter, more preferably 0.1~1.5g/m2。
Preferably, the silk fibroin nano-fiber diameter is in the range of 100~800nm, preferably 120~780nm ranges
It is interior.
Specific preparation method is to prepare fibroin albumen using roller type reception type electrospinning device by raw material of silk cocoon silk
Nanofiber.
Silk cocoon is boiled to removing silk gum in sodium bicarbonate aqueous solution, then by fibroin fiber in CaCl2/C2H5OH/
H2O ternary salting liquid systems high temperature dissolves, silk fibroin water solution that then it dialyses to obtain in deionized water, by fibroin egg
White solution centrifugation removal precipitation.Silk fibroin protein solution is placed in refrigerator freezing Cheng Bing, then is freeze-dried to obtain fibroin albumen sponge.It will
Obtained fibroin albumen sponge is dissolved in formic acid and obtains fibroin albumen formic acid solution；
Utilize electrostatic spinning technique, operating voltage positive high voltage 20kV, negative high voltage -3kV, spinning distance 20cm, translating stroke
300mm, translational velocity 500mm/min, winding up roller receive speed 100r/min.Fibroin albumen formic acid solution injection speed 0.8ml/h,
Electrostatic spinning is carried out, silk fibroin nano-fiber is deposited on 10~30g/m2Non-woven fabrics (such as 10g/m2、20g/m2、30g/
m2) on silk fibroin nano-fiber.
The fibroin Electrospun nano-fibers film obtained using non-woven fabrics as substrate deposition is taken, is placed in vacuum tank, using change
The method for learning vapor deposition, 0~120min of its surface is deposited on by trim,ethylchlorosilane.With the extension of vapor deposition times,
Hydrophilic contact angle significantly increases.In humidity be 85% by the filter disc, temperature is under 25 DEG C of humiture environment, test 0,1,2,
4th, 8,15,30, during 60min filter disc filter efficiency, the results showed that, when the filter efficiency of filter disc is kept under high humid and warm environment
Between be obviously prolonged, filtering stability significantly improve.
A kind of air filter unit using silk fibroin nano-fiber filtering material, which is characterized in that including：
Optional basal layer,
The silk fibroin nano-fiber filtering material and
Optional coating.
Preferably, the equipment is mask, which is characterized in that mask is sequentially overlapped by four layers or more structures and is combined,
The structure is arranged in order respectively nonwoven layer (1), meltblown fabric layer and/or electrostatic electret material layer (2), fibroin from inside to outside
Protein nano fiber filter material layer (3) and nonwoven layer (4).
Preferably, the grammes per square metre of nonwoven layer is 10~30g/m2。
Preferably, the grammes per square metre of meltblown fabric layer is 20~80g/m2。
Preferably, the grammes per square metre of electrostatic electret material layer is 30~100g/m2。
The term as used herein " silk fibroin nano-fiber " refers to regenerated silk fibroin of the diameter in nanometer (nm) scale
Fiber, such as diameter can be in the range of 10-1500nm, in the range of particularly 50-1000nm.In some embodiment party of the present invention
In case, the diameter of the silk fibroin nano-fiber is in the range of 100-800nm." silk fibroin nano-fiber " of the present invention can
To be made using natural silk or silk offcut as starting material, other modes known in the art can also be passed through
It is made, raw material are not limited to natural silk.
The term as used herein " silk fibroin nano-fiber " and " silk fibroin nano-fiber film " may be used interchangeably, and refer to
Be regenerated silk fibroin nanofiber formed non-woven constructions fibrous layer.
The term as used herein " grammes per square metre " refers to the quality of the material of unit area size.Grammes per square metre can be used for describing fibroin
The thickness of protein nano tunica fibrosa.For example, the base weight of silk fibroin nano-fiber film of the present invention can be less than 10g/m2。
The term as used herein " air filter unit " should do the understanding of broad sense, net including mask, air-conditioning, civilian air
Change device, industrial air filter etc..
The term as used herein " mask " should do the understanding of broad sense, refer to the air filter unit worn for people.Allusion quotation
The mask of type is such as cotton yarn mouth mask, KN90 masks.
The meaning of the term as used herein " optional " expression " not essential " or " nonessential ".For example, " optional substrate
Layer " refers to can there is the basal layer, can not also have the basal layer, this can be by those skilled in the art according to practical feelings
Condition is selected.
Advantageous effect
1. electrostatic spinning process is combined by the present invention with gas phase deposition technology, the fibroin egg suitable for air filtration is obtained
White nanofiber filtration material, filter efficiency is high, filtering stability is good under high humidity environment, and durability and dimensional stability
It is good.
2. the preparation process of the present invention is simple, and with good structural controllability, can be by controlling spinning technique gentle
Phase depositing operation controls the filterability of nanofiber filtration material and resistance pressure drop.
3. the filtering material raw material of the present invention is renewable natural material, abundance, good biocompatibility, environment friend
It is good, organic solvent is not used in preparation process, environmental pollution will not be caused or harm is generated to human body.
4. for the filter effect of the filtering material of the present invention up to more than 99%, filtration resistance is less than 25mmH2O, meets China's national standard
The requirement of GB2626-2006 and American Standard NOISH standards.
Preferably, the grammes per square metre of meltblown fabric layer is 20~80g/m2。
Preferably, the grammes per square metre of electrostatic electret material layer is 30~100g/m2。
The term as used herein " silk fibroin nano-fiber " refers to regenerated silk fibroin of the diameter in nanometer (nm) scale
Fiber, such as diameter can be in the range of 10-1500nm, in the range of particularly 50-1000nm.In some embodiment party of the present invention
In case, the diameter of the silk fibroin nano-fiber is in the range of 100-800nm." silk fibroin nano-fiber " of the present invention can
To be made using natural silk or silk offcut as starting material, other modes known in the art can also be passed through
It is made, raw material are not limited to natural silk.
The term as used herein " silk fibroin nano-fiber " and " silk fibroin nano-fiber film " may be used interchangeably, and refer to
Be regenerated silk fibroin nanofiber formed non-woven constructions fibrous layer.
The term as used herein " grammes per square metre " refers to the quality of the material of unit area size.Grammes per square metre can be used for describing fibroin
The thickness of protein nano tunica fibrosa.For example, the base weight of silk fibroin nano-fiber film of the present invention can be less than 10g/m2。
The term as used herein " air filter unit " should do the understanding of broad sense, net including mask, air-conditioning, civilian air
Change device, industrial air filter etc..
The term as used herein " mask " should do the understanding of broad sense, refer to the air filter unit worn for people.Allusion quotation
The mask of type is such as cotton yarn mouth mask, KN90 masks.
The meaning of the term as used herein " optional " expression " not essential " or " nonessential ".For example, " optional substrate
Layer " refers to can there is the basal layer, can not also have the basal layer, this can be by those skilled in the art according to practical feelings
Condition is selected.
Advantageous effect
1. electrostatic spinning process is combined by the present invention with gas phase deposition technology, the fibroin egg suitable for air filtration is obtained
White nanofiber filtration material, filter efficiency is high, filtering stability is good under high humidity environment, and durability and dimensional stability
It is good.
2. the preparation process of the present invention is simple, and with good structural controllability, can be by controlling spinning technique gentle
Phase depositing operation controls the filterability of nanofiber filtration material and resistance pressure drop.
3. the filtering material raw material of the present invention is renewable natural material, abundance, good biocompatibility, environment friend
It is good, organic solvent is not used in preparation process, environmental pollution will not be caused or harm is generated to human body.
4. for the filter effect of the filtering material of the present invention up to more than 99%, filtration resistance is less than 25mmH2O, meets China's national standard
The requirement of GB2626-2006 and American Standard NOISH standards.
Description of the drawings
Silk fibroin nano-fiber scanning electron microscope (SEM) photograph during Fig. 1 electrostatic spinning 40min.
The variation diagram at hydrophilic contact angle after Fig. 2 trim,ethylchlorosilanes vapor deposition different time.
Filter efficiency change curve of the filter disc under hygrothermal environment after the processing of Fig. 3 trim,ethylchlorosilanes
Specific embodiment
Embodiment 1：Using silk cocoon silk as raw material fibroin albumen Nanowire is prepared using roller type reception type electrospinning device
Tie up film
30min removing silk gum is boiled in 0.5wt% sodium bicarbonate aqueous solutions first by silk cocoon, then by fibroin albumen fibre
Dimension is in CaCl2/C2H5OH/H2O (molar ratios 1:2:8) 80 DEG C of dissolving 2h in ternary salting liquid system, then by it in deionized water
Middle dialysis obtains silk fibroin water solution in three days, and silk fibroin protein solution is centrifuged 5min, removal precipitation with 3500r/min.By fibroin
Protein solution is placed in -4 DEG C of refrigerator and is frozen into ice, then is freeze-dried to obtain fibroin albumen sponge.Obtained fibroin albumen sponge is molten
Solution obtains 20wt% fibroin albumen formic acid solutions in 98-100% anhydrous formic acids.Then using electrostatic spinning technique, operating voltage is just
High pressure 20kV, negative high voltage -3kV, spinning distance 20cm, translating stroke 300mm, translational velocity 500mm/min, winding up roller receive speed
100r/min.Fibroin albumen formic acid solution injection speed 0.8ml/h carries out electrostatic spinning, silk fibroin nano-fiber is deposited
In 10g/m2Non-woven fabrics on obtain silk fibroin nano-fiber filtering material.
The shape appearance figure of Static Spinning silk fibroin nano-fiber is shown in attached drawing 1, the fibroin albumen nanometer obtained under the conditions of the electrospinning
0.25-0.63 μm of fiber diameter range, about 0.43 μm of average diameter.By controlling electrostatic spinning sedimentation time, can control
The silk fibroin nano-fiber film arrived is to the filter efficiency and air drag of PM2.5.Such as with 10g/m2Non-woven fabrics as fibroin
When protein nano fiber accepts substrate, under the conditions of above-mentioned electrospinning, silk fibroin nano-fiber film is presented half during Static Spinning 10min
The transparency, and electrospinning 10min, 20min, 30min, 40min, 50min obtain the silk fibroin nano-fiber film of different weight,
Since relatively thin silk fibroin nano-fiber is difficult to the self-supporting of large area, therefore with 10g/m2Non-woven fabrics be basal layer and covering
The filter disc of " non-woven fabrics+silk fibroin nano-fiber film+non-woven fabrics " sandwich structure is made in layer, tests filter efficiency and filtering
Resistance, it is specific such as table 1.
The filter efficiency and filtration resistance of 1 sandwich structure filter disc of table
Wherein spinning 30min can must obtain the filter efficiency for meeting KN90 masks, and pressure drop is less than 60Pa, and spinning
The silk fibroin nano-fiber film that 50min is obtained is to the filter efficiency of PM2.5 up to 99.6%, and pressure drop is only 94.1Pa.
《PM2.5Protective mask standard》In, the two level filter effect mask air drag of more than 90% filter efficiency should be less than 100Pa, filtering effect
The first-level filtering effect mask air drag of more than 95% rate should be less than 120Pa, and silk fibroin nano-fiber film prepared by the present invention is used
It is complied fully in air filting material and is far superior to the standard of protective mask.
Embodiment 2:Silk fibroin nano-fiber is modified trim,ethylchlorosilane and its performance test
The spinning time is taken as 40min, the fibroin electrostatic spinning nano using non-woven fabrics as substrate that area is 10cm × 10cm
Tunica fibrosa is placed in vacuum tank, using the method for chemical vapor deposition, by trim,ethylchlorosilane be deposited on its surface 30min,
60min、90min、120min.Water droplet is added dropwise by surface, compares the size at its hydrophilic contact angle, hydrophobic performance is characterized with this
Improvement.The result shows that (such as Fig. 2), without hydrophobic modified silk fibroin nano-fiber film, dissolves when water droplet is added dropwise
It caving in, hydrophilic contact angle is zero, and after trim,ethylchlorosilane is vapor-deposited 30min, hydrophilic contact angle is 93 °, is dredged
It is aqueous to be obviously improved, and with the extension of vapor deposition times, hydrophilic contact angle significantly increases, and deposits reachable during 120min
122 °, at this time the hydrophobicity of silk fibroin nano-fiber film greatly increase, be shown in Table 2.
The silk fibroin nano-fiber performance test before and after the processing of 2 trim,ethylchlorosilane of table
" non-woven fabrics+silk fibroin nano-fiber film+nothing is made in the above-mentioned silk fibroin nano-fiber film through hydrophobic treatment
The filter disc of woven fabric " sandwich structure is 85% in humidity, and temperature is under 25 DEG C of humiture environment, test 0,1,2,4,8,15,
30th, during 60min filter disc filter efficiency.As a result, it has been found that vapor deposition times are more than the filter disc of 60min, in continuously loading 60min
Filtering test in, filter efficiency remain to keep more than 80%, have excellent filtering stability.Test result refers to Fig. 3.
Although having been combined only certain exemplary embodiments of this invention describes the present invention, but it is clear that those skilled in the art can
To expect many alternative solutions, modifications and variations.Therefore, the invention is intended to include falling into the spirit of appended claims and broad sense
In the range of all such alternative solution, modifications and variations.All disclosures, patent and the patent referred in description of the invention
Application by reference to being entirely incorporated into present specification, incorporated extent be equal to it is clear and definite and independently point out every individually public affairs
It opens, patent or patent application are incorporated herein by reference.In addition, in the application the reference of any bibliography or determine should
It is construed as an admission that the bibliography can be as the prior art of the present invention.
Claims (10)
1. a kind of silk fibroin nano-fiber filtering material, obtains silk fibroin nano-fiber by electrostatic spinning, passes through gas phase
Volatile lyophobic dust fluorinated silane, chlorinated silane are grafted on silk fibroin nano-fiber film surface, obtained by the method for deposition
To silk fibroin nano-fiber filtering material.
2. silk fibroin nano-fiber filtering material described in claim 1, which is characterized in that volatile lyophobic dust is three
Methylchlorosilane is deposited on silk fibroin nano-fiber surface time as 30~120min.
3. silk fibroin nano-fiber filtering material described in claim 1, which is characterized in that gram of silk fibroin nano-fiber
Weight is 50g/m2Hereinafter, it is preferred that 10g/m2Hereinafter, further preferably 2g/m2Hereinafter, more preferably 0.1~1.5g/m2。
4. silk fibroin nano-fiber filtering material described in claim 1, the silk fibroin nano-fiber diameter 100~
In the range of 800nm, in the range of preferably 120~780nm.
5. a kind of preparation method of silk fibroin nano-fiber filtering material as described in claim 1, which is characterized in that
(1), silk removing silk gum is obtained into fibroin fiber；
(2), by dissolving in the solution, desalination obtains spinning solution；
(3), obtained spinning solution is subjected to electrostatic spinning, obtains silk fibroin nano-fiber；
(4), by the method for vapor deposition, volatile lyophobic dust fluorinated silane, chlorinated silane are grafted on into fibroin albumen
Nanofiber film surface obtains silk fibroin nano-fiber filtering material.
6. the preparation method of the silk fibroin nano-fiber filtering material described in claim 5, which is characterized in that fibroin albumen is received
The grammes per square metre of rice fiber is 50g/m2Hereinafter, it is preferred that 10g/m2Hereinafter, further preferably 2g/m2Hereinafter, more preferably 0.1~1.5g/m2,
The silk fibroin nano-fiber diameter is in the range of 100~800nm, in the range of preferably 120~780nm.
7. a kind of air filter unit using filtering material described in claim 1, which is characterized in that including：
Optional basal layer,
Silk fibroin nano-fiber filtering material described in claim 1 and
Optional coating.
8. the air filter unit described in claim 7, which is characterized in that the equipment is mask, which is characterized in that mask is by four
Layer or more structure be sequentially overlapped and be combined, the structure is arranged in order from inside to outside, respectively nonwoven layer I (1), fusion spray cloth
Layer and/or electrostatic electret material layer (2), silk fibroin nano-fiber filtering material (3) and nonwoven layer II (4).
9. a kind of air filter unit according to any one of claims 8, which is characterized in that the grammes per square metre of nonwoven layer is 10~30g/m2。
10. a kind of air filter unit according to any one of claims 8, which is characterized in that the grammes per square metre of meltblown fabric layer is 20~80g/m2,
The grammes per square metre of electrostatic electret material layer is 30~100g/m2。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810138453.9A CN108159779A (en) | 2018-02-10 | 2018-02-10 | A kind of filtering material and the air filter unit based on the filtering material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810138453.9A CN108159779A (en) | 2018-02-10 | 2018-02-10 | A kind of filtering material and the air filter unit based on the filtering material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108159779A true CN108159779A (en) | 2018-06-15 |
Family
ID=62513720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810138453.9A Pending CN108159779A (en) | 2018-02-10 | 2018-02-10 | A kind of filtering material and the air filter unit based on the filtering material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108159779A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1826391A (en) * | 2003-06-23 | 2006-08-30 | 苏黎世大学 | Superhydrophobic coating |
| CN101049931A (en) * | 2007-05-10 | 2007-10-10 | 上海交通大学 | Method for synthesizing Nano fiber of ultra hydrophobic SiC |
| US7651760B2 (en) * | 2005-09-16 | 2010-01-26 | Massachusetts Institute Of Technology | Superhydrophobic fibers produced by electrospinning and chemical vapor deposition |
| CN106422522A (en) * | 2015-08-11 | 2017-02-22 | 清华大学 | Silk nano-fiber-based air filtering device |
-
2018
- 2018-02-10 CN CN201810138453.9A patent/CN108159779A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1826391A (en) * | 2003-06-23 | 2006-08-30 | 苏黎世大学 | Superhydrophobic coating |
| US7651760B2 (en) * | 2005-09-16 | 2010-01-26 | Massachusetts Institute Of Technology | Superhydrophobic fibers produced by electrospinning and chemical vapor deposition |
| CN101049931A (en) * | 2007-05-10 | 2007-10-10 | 上海交通大学 | Method for synthesizing Nano fiber of ultra hydrophobic SiC |
| CN106422522A (en) * | 2015-08-11 | 2017-02-22 | 清华大学 | Silk nano-fiber-based air filtering device |
| CN206597379U (en) * | 2015-08-11 | 2017-10-31 | 清华大学 | Air filter unit based on silk nanofiber |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Wang et al. | Biodegradable and high-performance multiscale structured nanofiber membrane as mask filter media via poly (lactic acid) electrospinning | |
| CN105002656B (en) | A kind of hydrophobic membrane with self-cleaning function and its preparation method and application | |
| CN107596791B (en) | Composite nanofiber filtering material with photocatalytic function and preparation method thereof | |
| CN104436865B (en) | High-efficiency low-resistance PM2.5 composite fiber filtering membrane and electrostatic spinning preparation method | |
| CN206597379U (en) | Air filter unit based on silk nanofiber | |
| Min et al. | Recent progress in bio-inspired electrospun materials | |
| CN109731483B (en) | Multi-dimensional hydrophilic-hydrophobic structure composite nanofiber membrane and preparation method thereof | |
| Tijing et al. | 1.16 Electrospinning for membrane fabrication: strategies and applications | |
| CN108993167B (en) | Preparation and application of antibacterial electrostatic spinning nanofiber air filtering material | |
| CN102920067A (en) | Preparation method of nanofiber sandwich type protective facial mask | |
| CN109012218A (en) | Four layers of composite micro-nano rice fiber air filter membrane of one kind and its application | |
| CN112774457B (en) | Polymer microfiltration membrane and preparation method and application thereof | |
| CN109806771B (en) | Nanofiber-based composite hemodialysis membrane and preparation method thereof | |
| CN105396466A (en) | Cellulose nanofiber-graphene oxide hybridized composite ultrafiltration membrane and preparation method thereof | |
| CN107261209A (en) | A kind of method of use phyllosilicate/chitosan self-assembled modified micro/nano-fibre film layer by layer | |
| CN114028603B (en) | Double-layer asymmetric dressing for promoting skin wound repair and preparation method thereof | |
| CN109730378B (en) | PM2.5 protective mask with electrostatic spinning film and preparation method thereof | |
| CN105497969A (en) | Multilayer composite film dressing and preparation method thereof | |
| CN111001318B (en) | Hybrid composite forward osmosis membrane assisted by dopamine and modified and preparation method thereof | |
| CN113368712B (en) | Efficient air filtration composite nanofiber membrane and preparation method thereof | |
| Bian et al. | Degradable nanofiber for eco-friendly air filtration: Progress and perspectives | |
| CN108786492A (en) | A kind of regulatable air-filtering membrane of quality factor and preparation method thereof | |
| CN108379932B (en) | Nanofiber filtering material and air filtering equipment based on same | |
| CN108379933B (en) | Silk fibroin nanofiber filtering material and air filtering equipment based on filtering material | |
| CN113445155B (en) | Chitosan-based nanofiber and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20190128 Address after: Room A104, 1st floor, No. 79, Shuangqing Road, Haidian District, Beijing Applicant after: Beijing Qingkesiyu Technology Co., Ltd. Address before: 100084 Block B 705, Xueyan Building, Tsinghua University, Haidian District, Beijing Applicant before: Beijing honest Tyco Technology Co. Ltd. |
|
| TA01 | Transfer of patent application right | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180615 |
|
| RJ01 | Rejection of invention patent application after publication |