CN209479118U - A kind of composite cellulosic membrane and its mask can be used for efficient low-resistance haze mask - Google Patents
A kind of composite cellulosic membrane and its mask can be used for efficient low-resistance haze mask Download PDFInfo
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- CN209479118U CN209479118U CN201920057991.5U CN201920057991U CN209479118U CN 209479118 U CN209479118 U CN 209479118U CN 201920057991 U CN201920057991 U CN 201920057991U CN 209479118 U CN209479118 U CN 209479118U
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Abstract
The utility model discloses a kind of composite cellulosic membranes and its mask that can be used for efficient low-resistance haze mask, the three-decker being combined by non-woven fabrics, melt-blown cotton and porous nanofiber membrane by ultrasonic thermocompression, its outer layer is non-woven fabrics, and middle layer is melt-blown cotton, and internal layer is porous nanofiber membrane；The thickness of the melt-blown cotton is between 0.5mm-1.5mm, and the thickness of porous nanofiber membrane is between 50um-200um；The porous nanofiber membrane is made of porous nano-fibre, the nanofiber has porous structure, porous nano-fibre diameter is 100-900nm, nanofiber aperture is 50-400nm, humidity responsive intelligent germicidal efficiency is in 98%-99.9%, the filter efficiency to haze can be effectively improved, while can also reduce resistance.
Description
Technical field
The utility model relates to a kind of composite cellulosic membranes and its mask that can be used for efficient low-resistance haze mask, are related to ring
Protect field of material technology.
Background technique
In recent years, as China's expanding economy brings some drawbacks, environment is destroyed, and atmosphere pollution is increasingly tight
Weight, haze weather seriously affect air quality, the health for endangering the mankind, can also cause traffic accident, give people's lives band
Many inconvenience is carried out.
Traditional mask material mainly has meltblown fibers, staple fiber.These materials are since fibre diameter is big, and hole between fiber
Diameter is big, so that filter efficiency is low, and resistance ratios are larger.In addition, as melt-blown cotton etc. is poor to oily particle filtering, it may appear that filtering effect
The result of rate rapid drawdown.High-efficient low-resistance and strong to the materials demand of oiliness and salt particle double filtration.
Summary of the invention
Technical problem to be solved in the utility model is that in view of the defects existing in the prior art, providing one kind can be used for height
Imitate low-resistance haze mask composite cellulosic membrane, can in haze salt and oily particle double filtration, and have filtering imitate
Fruit is good, resistance is lower, also has the effect of the sterilization of humidity responsive intelligent.
In order to solve this technical problem, the utility model, which provides, a kind of can be used for the compound of efficient low-resistance haze mask
Tunica fibrosa, including non-woven fabrics, melt-blown cotton and porous nanofiber membrane, the composite cellulosic membrane is by non-woven fabrics, melt-blown cotton and porous
The three-decker that nano fibrous membrane is combined by ultrasonic thermocompression, outer layer are non-woven fabrics, and middle layer is melt-blown cotton, and internal layer is
Porous nanofiber membrane；The thickness of the melt-blown cotton between 0.5mm-1.5mm, the thickness of porous nanofiber membrane 50 μm-
Between 200 μm；The porous nanofiber membrane is made of porous nano-fibre；The porous nano-fibre diameter is 100-
900nm, nanofiber aperture are 50-400nm, and humidity responsive intelligent germicidal efficiency is in 98%-99.9%.
The porous nano-fibre diameter is 500nm, and nanofiber aperture is 100nm；The porous nanofiber membrane
With a thickness of 100 μm, the thickness of cotton is meltblown in 1mm.
The porous nano-fibre diameter is 600nm, and nanofiber aperture is 120nm；The porous nanofiber membrane
With a thickness of 90 μm, the thickness of cotton is meltblown in 0.8mm.
The utility model additionally provides a kind of efficient low-resistance haze mask, filter efficiency 98-99%, resistance 40-
60Pa germicidal efficiency is 98-99.9%.
The utility model has the advantages that porous nanofiber membrane is made by electrostatic spinning technique in the utility model, which has
Porous structure can effectively improve the filter efficiency to haze, while can also reduce resistance.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is that the SEM of the utility model porous nano-fibre structure schemes.
In figure: 1 is non-woven fabrics, 2 are meltblown cottons, 3 porous nanofiber membranes.
Specific embodiment
The utility model is specifically described with reference to the accompanying drawings and embodiments.
Fig. 1 show the structural schematic diagram of the utility model.
The utility model provides a kind of composite cellulosic membrane that can be used for efficient low-resistance haze mask, including non-woven fabrics 1,
It is meltblown cotton 2 and porous nanofiber membrane 3, the composite cellulosic membrane is passed through by non-woven fabrics 1, melt-blown cotton 2 and porous nanofiber membrane 3
The three-decker that ultrasonic thermocompression is combined, outer layer are non-woven fabrics 1, and middle layer is melt-blown cotton 2, and internal layer is porous nano-fibre
Film 3.
The compound temperature of the ultrasonic thermocompression is 80-150 DEG C.
The citric acid and sodium chlorite of 3%-10% are adulterated in the porous nanofiber membrane 3.
The thickness of the melt-blown cotton 2 is between 0.5mm-1.5mm, and the thickness of porous nanofiber membrane 3 is at 50 μm -200 μm
Between.
The non-woven fabrics 1 is the non-woven fabrics after antistatic treatment.
Fig. 2 show the SEM figure of the utility model porous nano-fibre structure.
The porous nanofiber membrane 3 is made of porous nano-fibre.
The porous nanofiber membrane 3 is 100-900nm by diameter, and aperture is made of 50-400nm nanofiber.
The similar ellipse of the shape of porous nano-fibre, pore size distribution are uniform in the porous nanofiber membrane 3.
Porous nano-fibre distribution is fluffy in the porous nanofiber membrane 3, and each Inter-fiber voids are in 200-800nm.
The porous nano-fibre is solvent, PLGA (polylactic acid-glycolic base second by methylene chloride and N.N dimethylformamide
Acid copolymer) it with PCL (polycaprolactone) is solute, addition citric acid and sodium chlorite, polyvinyl alcohol microparticles, through electrostatic spinning skill
Art is made.
The amount of the PLGA (poly lactide-glycolide acid) and PCL (polycaprolactone) is 1:3 to 3:1；It is described poly-
Close object poly lactide-glycolide acid and polycaprolactone and the organic solvent dichloromethane and N.N dimethylformamide
Mass ratio (g/g) is 8-12%.
The content of N.N dimethylformamide described in mixed solvent is 0-5%.
The content of citric acid described in polymer solution and sodium chlorite accounts for poly lactide-glycolide acid and gathers oneself
The mass ratio of lactone is respectively 1%-10%.
It is 2%- that the content of the polyvinyl alcohol microparticles, which accounts for poly lactide-glycolide acid and the mass ratio of polycaprolactone,
5%.
The process conditions of the spinning are as follows: 25 ± 2 DEG C of temperature, relative humidity 60%-90%.
The porous nano-fibre diameter is 100-900nm, and nanofiber aperture is 50-400nm, humidity responsive intelligent
Germicidal efficiency is in 98%-99.9%.
The utility model additionally provides a kind of efficient low-resistance haze mask, filter efficiency 98-99%, resistance 40-
60Pa germicidal efficiency is 98-99.9%.
The preparation of 1 mask A of embodiment
1, it prepares porous nanofiber membrane: PLGA and PCL is dissolved in methylene chloride and N.N diformazan according to mass ratio for 1:3
In base formamide, mass fraction 12%, wherein N.N dimethylformamide accounts for the 2% of solvent quality, stirs, so
After be divided into two bottles, respectively add mass ratio be 5% citric acid and sodium chlorite, be stirred for that it is made to be uniformly dispersed.It is molten at two kinds
It is separately added into 3% polyvinyl alcohol microparticles in liquid, may advantageously facilitate nanofiber expansion water suction, accelerate the progress of reaction；Then
Solution is in spinning voltage 70kv, and for spinning distance in 20cm, the flow velocity of spinning is 600ml/h, and temperature is at 25 DEG C, relative humidity
85% electrospinning for a period of time, obtains porous nanofiber membrane 3.
2, it prepares composite cellulosic membrane: porous nanofiber membrane 3 prepared by non-woven fabrics 1, melt-blown cotton 2 and above-mentioned steps 1 is led to
The three-decker that ultrasonic thermocompression is combined is crossed, outer layer is non-woven fabrics 1, and middle layer is melt-blown cotton 2, and internal layer is that porous nano is fine
Tie up film 3.The porous nano-fibre diameter of porous nanofiber membrane 3 is 500nm, and nanofiber aperture is 100nm；It is described porous to receive
Rice tunica fibrosa 3 with a thickness of 100 μm, be meltblown cotton 2 thickness in 1mm；The compound temperature of the hot pressing is at 120 DEG C.
3, mask is prepared: the mask A that above-mentioned composite cellulosic membrane is further fabricated to, according to " daily protective mask skill
Art specification " GB/T23610-2016 carries out mask test, and the filter efficiency 99% of mask, resistance 52Pa, furthermore mask kills
Bacterium efficiency is 99%.
The preparation of 2 mask B of embodiment
1, it prepares porous nanofiber membrane: PLGA and PCL is dissolved in methylene chloride and N.N diformazan according to mass ratio for 3:1
In base formamide, mass fraction 8%, wherein N.N dimethylformamide accounts for the 2% of solvent quality, stirs, then
It is divided into two bottles, adds citric acid and sodium chlorite that mass ratio is 6% respectively, be stirred for that it is made to be uniformly dispersed.In two kinds of solution
In be separately added into 2% polyvinyl alcohol microparticles, may advantageously facilitate nanofiber expansion water suction, accelerate reaction progress；Then molten
Liquid is in spinning voltage 80kv, and for spinning distance in 28cm, the flow velocity of spinning is 800ml/h, and temperature is at 25 DEG C, relative humidity 95%
Electrospinning for a period of time, obtains porous nanofiber membrane 3.
2, it prepares composite cellulosic membrane: porous nanofiber membrane 3 prepared by non-woven fabrics 1, melt-blown cotton 2 and above-mentioned steps 1 is led to
The three-decker that ultrasonic thermocompression is combined is crossed, outer layer is non-woven fabrics 1, and middle layer is melt-blown cotton 2, and internal layer is that porous nano is fine
Tie up film 3.The porous nano-fibre diameter of porous nanofiber membrane 3 is 600nm, and nanofiber aperture is 120nm；The hot pressing
Compound temperature is at 130 DEG C；The porous nanofiber membrane 3 with a thickness of 90 μm, be meltblown cotton 2 thickness in 0.8mm；Described
The compound temperature of hot pressing is at 130 DEG C.
3, mask is prepared: the mask B that above-mentioned composite cellulosic membrane is further fabricated to, according to " daily protective mask skill
Art specification " GB/T23610-2016 carries out mask test, the filter efficiency 98.8% of mask, resistance 43Pa, furthermore mask
Germicidal efficiency is 99.5%.
The preparation of 3 mask C of embodiment
1, it prepares porous nanofiber membrane: PLGA and PCL is dissolved in methylene chloride and N.N diformazan according to mass ratio for 1:1
The in the mixed solvent of base formamide, polymer quality score are 10%, and wherein N.N dimethylformamide accounts for mixed solvent quality
5%, it stirs, is then divided into two bottles, be added 3% in the citric acid, another bottle of solution of addition 3% in one bottle of solution
Sodium chlorite is stirred for that it is made to be uniformly dispersed.It is separately added into 5% polyvinyl alcohol microparticles in two kinds of solution, may advantageously facilitate
Nanofiber expansion water suction, accelerates the progress of reaction；Then solution is in spinning voltage 30kv, spinning distance in 12cm, spinning
Flow velocity is 200ml/h, and for temperature at 25 DEG C, 60% electrospinning of relative humidity for a period of time, obtains porous nanofiber membrane 3.
2, it prepares composite cellulosic membrane: porous nanofiber membrane 3 prepared by non-woven fabrics 1, melt-blown cotton 2 and above-mentioned steps 1 is led to
The three-decker that ultrasonic thermocompression is combined is crossed, outer layer is non-woven fabrics 1, and middle layer is melt-blown cotton 2, and internal layer is that porous nano is fine
Tie up film 3.The porous nano-fibre diameter of porous nanofiber membrane 3 is 500nm, and nanofiber aperture is 100nm；It is described porous to receive
Rice tunica fibrosa 3 with a thickness of 80 μm, be meltblown cotton 2 thickness in 0.6mm；The compound temperature of the hot pressing is at 100 DEG C.
3, mask is prepared: the mask C that above-mentioned composite cellulosic membrane is further fabricated to, according to " daily protective mask skill
Art specification " GB/T23610-2016 carries out mask test, the filter efficiency 98.8% of mask, resistance 43Pa, furthermore mask
Germicidal efficiency is 98.5%.
The preparation of 4 mask D of embodiment
1, it prepares porous nanofiber membrane: PLGA and PCL is dissolved in methylene chloride and N.N diformazan according to mass ratio for 3:1
In base formamide, polymer quality score is 8%；Wherein N.N dimethylformamide accounts for the 2% of mixed solvent quality, sufficiently stirs
It mixes uniformly, is then divided into two bottles, 7% citric acid is added in one bottle of solution, 6% sodium chlorite is added in another bottle of solution,
It is stirred for that it is made to be uniformly dispersed.It is separately added into 4% polyvinyl alcohol microparticles in two kinds of solution, it is swollen to may advantageously facilitate nanofiber
Swollen water suction accelerates the progress of reaction；Then solution is in 28cm, the flow velocity of spinning in spinning voltage 80kv, spinning distance
800ml/h, for temperature at 25 DEG C, 95% electrospinning of relative humidity for a period of time, obtains porous nanofiber membrane 3.
2, it prepares composite cellulosic membrane: porous nanofiber membrane 3 prepared by non-woven fabrics 1, melt-blown cotton 2 and above-mentioned steps 1 is led to
The three-decker that ultrasonic thermocompression is combined is crossed, outer layer is non-woven fabrics 1, and middle layer is melt-blown cotton 2, and internal layer is that porous nano is fine
Tie up film 3.The porous nano-fibre diameter of porous nanofiber membrane 3 is 600nm, and nanofiber aperture is 200nm；It is described porous to receive
Rice tunica fibrosa 3 with a thickness of 150 μm, be meltblown cotton 2 thickness in 1.2mm；The compound temperature of the hot pressing is at 140 DEG C.
3, mask is prepared: the mask D that above-mentioned composite cellulosic membrane is further fabricated to, according to " daily protective mask skill
Art specification " GB/T23610-2016 carries out mask test, the filter efficiency 99.8% of mask, resistance 45Pa, furthermore mask
Germicidal efficiency is 99.5%.
Experimental example mask filtration efficiency and germicidal efficiency test
1, test product: reference substance 1 is certain brand M95 type mask；Reference substance 2 is certain 9501 type mask of brand；Reference substance
3 be certain famous brand name mask；Product A is mask prepared by the embodiment of the present invention 1；Product B is mouth prepared by the embodiment of the present invention 2
Cover；Products C is mask prepared by the embodiment of the present invention 3；Product D is mask prepared by the embodiment of the present invention 4.
2, test condition: 25 ± 2 DEG C of ambient humidity, relative humidity 30 ± 5%, 85L/min.
3, test equipment: SX-L1053 filtrate test machine.
4, it test result: see the table below.
| Mask | Reference substance 1 | Reference substance 2 | Reference substance 3 | Product A | Product B | Products C | Product D |
| Resistance | 112Pa | 70Pa | 115Pa | 52Pa | 43Pa | 43Pa | 45Pa |
| Filter efficiency | 98.6% | 92.6% | 66.7% | 99% | 98.8% | 98.8% | 99.8% |
As can be seen that the product on mask products and marketing prepared by the present invention is compared, filter effect is more preferable, and resistance is more
It is low, and market muzzle it is very poor to oily particle filter effect；In terms of antibacterial effect, most of mask does not resist in the market
Bacterium effect or antibacterial effect are bad, and mask prepared by the present invention, its antimicrobial efficiency is 98% or more after tested.
The present invention has by the way that citric acid and sodium chlorite are added in a polymer solution being prepared by electrostatic spinning technique
There is humidity to respond the porous nanofiber membrane of intelligent antibacterial, with the composite cellulosic membrane under the test of 85L/min, to PM2.5's
Filter efficiency can reach 99.9%, resistance also especially low effect.The composite fibre film preparation is simple, have filter efficiency height and
The small feature of resistance, and have the effect of intelligent antibacterial, it is a kind of ideal haze filtering material, new national standard A can be used in
Grade standard and to muzzle and air cleaning facility.
Nanofiber, which is made, by electrostatic spinning technique has diameter small, the big feature of specific area, Nanowire as made from it
There is dimension film nanoscale micropore and the porous channel being mutually communicated therefore to possess high porosity and good air permeability,
It attracts extensive attention and applies in air filtration technical field.
Porous nanofiber membrane is made by electrostatic spinning technique in the utility model, which has porous knot
Structure is added to functional particle in porous nanofiber membrane, can play the effect of humidity responsive intelligent sterilization, Neng Gouyou
The raising of effect can also reduce resistance to the filter efficiency of haze；By by intelligent sterilizing porous nanofiber membrane and melt-blown
Cotton, non-woven fabrics pass through ultrasonic thermocompression into composite cellulosic membrane together, have the effect to salt and oily particle double filtration.
Utility model preparation method is simple, has the advantages that haze filter efficiency height and resistance are low.
The utility model the embodiment above, is merely illustrative, be not it is only, it is all in the scope of the utility model
Or the change in equivalent the scope of the utility model is surrounded by the utility model.
Claims (4)
1. a kind of composite cellulosic membrane that can be used for efficient low-resistance haze mask, it is characterised in that: including non-woven fabrics (1), melt-blown
Cotton (2) and porous nanofiber membrane (3), the composite cellulosic membrane is by non-woven fabrics (1), melt-blown cotton (2) and porous nanofiber membrane
(3) three-decker being combined by ultrasonic thermocompression, outer layer are non-woven fabrics (1), and middle layer is melt-blown cotton (2), and internal layer is
Porous nanofiber membrane (3)；The thickness of melt-blown cotton (2) is between 0.5mm-1.5mm, the thickness of porous nanofiber membrane (3)
Degree is between 50 μm -200 μm；The porous nanofiber membrane (3) is made of porous nano-fibre；The porous nano-fibre is straight
Diameter is 100-900nm, and nanofiber aperture is 50-400nm, and humidity responsive intelligent germicidal efficiency is in 98%-99.9%.
2. the composite cellulosic membrane according to claim 1 that can be used for efficient low-resistance haze mask, it is characterised in that: described
Porous nano-fibre diameter is 500nm, and nanofiber aperture is 100nm；The porous nanofiber membrane (3) with a thickness of 100 μ
M is meltblown the thickness of cotton (2) in 1mm.
3. the composite cellulosic membrane according to claim 1 that can be used for efficient low-resistance haze mask, it is characterised in that: described
Porous nano-fibre diameter is 600nm, and nanofiber aperture is 120nm；The porous nanofiber membrane (3) with a thickness of 90 μ
M is meltblown the thickness of cotton (2) in 0.8mm.
4. it is a kind of using efficient low-resistance haze mask made of composite cellulosic membrane according to claim 1,2 or 3, it is special
Sign is: filter efficiency 98-99%, and resistance is that 40-60Pa germicidal efficiency is 98-99.9%.
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| CN201920057991.5U CN209479118U (en) | 2019-01-15 | 2019-01-15 | A kind of composite cellulosic membrane and its mask can be used for efficient low-resistance haze mask |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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2019
- 2019-01-15 CN CN201920057991.5U patent/CN209479118U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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