CN106012652A - Nanofiber composite air filter paper and production method thereof - Google Patents
Nanofiber composite air filter paper and production method thereof Download PDFInfo
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- CN106012652A CN106012652A CN201610371040.6A CN201610371040A CN106012652A CN 106012652 A CN106012652 A CN 106012652A CN 201610371040 A CN201610371040 A CN 201610371040A CN 106012652 A CN106012652 A CN 106012652A
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/08—Filter paper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B29/00—Layered products comprising a layer of paper or cardboard
- B32B29/002—Layered products comprising a layer of paper or cardboard as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B29/005—Layered products comprising a layer of paper or cardboard as the main or only constituent of a layer, which is next to another layer of the same or of a different material next to another layer of paper or cardboard layer
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
- D21H11/12—Pulp from non-woody plants or crops, e.g. cotton, flax, straw, bagasse
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
- D21H11/16—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only modified by a particular after-treatment
- D21H11/20—Chemically or biochemically modified fibres
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/03—Non-macromolecular organic compounds
- D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/03—Non-macromolecular organic compounds
- D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
- D21H17/06—Alcohols; Phenols; Ethers; Aldehydes; Ketones; Acetals; Ketals
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/66—Salts, e.g. alums
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
- D21H17/675—Oxides, hydroxides or carbonates
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
- D21H19/12—Coatings without pigments applied as a solution using water as the only solvent, e.g. in the presence of acid or alkaline compounds
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/30—Multi-ply
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/26—All layers being made of paper or paperboard
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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biochemistry (AREA)
- Filtering Materials (AREA)
- Paper (AREA)
Abstract
The invention discloses a nanofiber composite air filter paper and a production method thereof. The nanofiber composite air filter paper comprises an upper filter layer, a lower filter layer and a nanocellulose composite coating layer arranged on the upper surface of the upper filter layer; a composite slurry comprises nanocellulose, titanium dioxide aerogel nanoparticles, phenolic resin, dimethylformamide and water; raw materials of the upper filter layer comprise mercerized fibers, sisal fiber, akund fibers, ethylene glycol diglycidyl ether, a dispersant and water; and raw materials of the lower filter layer comprise broadleaf wood fibers, titanium dioxide aerogel particles, beta-cyclodextrin, carboxymethylcellulose, ethylene glycol diglycidyl ether and water. The filter layer of the nanofiber composite air filter paper is provided with a high-air permeability and good-water resistance nanofiber composite coating layer, so the water resistance, the weather resistance and the bursting strength of the filter paper are improved on the premise of guaranteeing the air permeability and the filtering efficiency of the filter paper.
Description
Technical field
The present invention relates to filter paper preparing technical field, particularly relate to a kind of nanofiber composite air filter paper and preparation method thereof.
Background technology
Air paper is the key building block in air filter, decides the performance of air filter.Air paper is usual
Including with the filter course that common wood pulp is a kind of papery that main component is made, owing to normal wood pulp fibres is relatively thin, tightness is high, because of
This made air paper generally also exists the shortcomings such as tightness is high, filter efficiency is low, the life-span is short, and its filter efficiency is generally low
In 90%, and the air paper of papery the most generally to there is curable poor, the shortcoming that resistance to water, weatherability are inadequate, when air is wet
When degree changes, paper is easily deformed, and then affects filter effect.
Currently also there is the filter paper being coated with one layer of resin bed at its surface, such as the Application No. of the applicant's earlier application
The Chinese patent of CN201220523227.0 discloses the thermosetting air paper of application in a kind of air filter；This air paper
Including filter course made of paper, the surface of filter course also even spread one layer of resin bed, and resin bed is thermosetting phenolic resin layer.
This filter paper is designed with resin bed by the upper and lower surface at filter course, improves the solidification of air paper to a certain extent
Property, resistance to water and weatherability, when air humidity raises, the hygroscopic deformation of paper is little, and service life is long.But also
Existing defects: owing to being provided with resin bed on the two sides of air paper, and the coated weight of resin bed is relatively big, causes thickness thicker, sternly
Heavily have impact on air permeability and the filter efficiency of air paper.
Summary of the invention
In order to solve above-mentioned technical problem, the invention provides a kind of nanofiber composite air filter paper and preparation method thereof.This
The filter course of the nanofiber composite air filter paper of invention is provided with breathability height, the nano-cellulose composite coating of water-tolerant,
On the premise of ensureing paper permeability and filter efficiency, improve the resistance to water of filter paper, weatherability and bursting strength.
The concrete technical scheme of the present invention is: a kind of nanofiber composite air filter paper, including upper filter course, lower filter course and
It is located at the nano-cellulose composite coating of described upper filter course upper surface；Described nano-cellulose composite coating is solidified by composite mortar
Forming, described composite mortar includes the material of following mass parts: 10-20 part nano-cellulose, 30-50 part titania aerogel
Particle, 10-20 part phenoxy resin, 15-25 part dimethylformamide, 5-15 part water；The raw material of described upper filter course includes following matter
The material of amount part: mercerization fiber 20-40 part, sisal fiber 10-20 part, Radix Calotropis giganteae fibre 10-20 part, ethylene glycol bisthioglycolate shrinks
Glycerin ether 0.5-1.5 part, dispersant 0.2-0.4 part and the desired amount of water；The raw material of described lower filter course includes following mass parts
Material: broad-leaved wood fiber 50-70 part, titania aerogel particle 1-3 part, beta-schardinger dextrin-1-3 part, carboxymethyl cellulose
0.5-1.5 part, Ethylene glycol diglycidyl ether 0.5-1.5 part and the desired amount of water.
The present invention is with the difference of traditional filter paper: traditional filter paper in order to improve resistance to water and the bursting strength of filter paper,
It is equipped with resin bed on the two sides of filter paper, although two-sided resin bed can be greatly improved the resistance to water of filter paper, weatherability and bursting strength,
Increase the service life, but it has had a strong impact on the air permeability of filter paper, not only reduce ventilation efficiency, and make filter paper easy
Savings heat, thus cause temperature to raise, the heat stability of filter paper is had higher requirement.And the present invention is only as air
The upper filter course in inflow face is provided with monolayer nano-cellulose composite coating, it is possible to effectively reduces paper sheet thickness, improves air permeability.
And upper and lower filter course self has preferable bursting strength and resistance to water, it is possible to effectively make up and bring because of the minimizing of resin bed
Defect.And the nano-cellulose composite coating of the present invention is made with nano-cellulose, titania aerogel particle and phenoxy resin
For main component, wherein, nano-cellulose light weight, specific surface area are big, porosity is high, and the enough strong particle of energization is in compound painting
The deposition probability on layer surface, improves filter efficiency；Nano-cellulose easily cross-links simultaneously, has higher-strength, makes the resistance to of filter paper
Broken degree is improved.Self specific surface area of titania aerogel particle is big, has the three-dimensional network cross-linked structure of complexity, with biography
The resin-cured layer of system is compared, and air permeability and filter efficiency are higher.On the one hand phenoxy resin exists as binding agent, improves compound
Slurry and the conjugation of filter course, on the other hand, phenoxy resin can improve the resistance to water of nano-cellulose composite coating, resistance to receipts
Contracting, resistance to acids and bases and bursting strength.
In upper filter course, use mercerization fiber, sisal fiber and Radix Calotropis giganteae fibre as primary raw material, mercerization fiber
Smooth surface, washing shrinkage is low, good stability of the dimension, and surface activity is high, and chemical reaction ability is strong, easily answers with other fibers
Crosslink, and high adsorption capacity, increase dust containing capacity；Sisal fiber quality is harder, and length-width ratio is big, and elastic modelling quantity is big, resistance to
Friction, humidity, intensity is high, has outstanding air permeability and absorbability, it is possible to increase dust containing capacity, and fiber interweaving ability
By force；Radix Calotropis giganteae fibre mechanical strength is high, resistance to water and Heat stability is good.Above-mentioned three kinds of fibers through making beating, defibrination and
Manufacture paper with pulp after molding, fibre length is controlled in certain length so that the fibrolaminar aperture after crosslinking is relatively big mutually, porosity
Greatly, therefore there is preferable dust absorbing ability, improve dust containing capacity.Additionally, the strand two ends of Ethylene glycol diglycidyl ether
Active group, its two ends can carry out " bonding " with by fiber respectively, serve bridge beam action, thus increase further
Cross-link intensity between fiber, improves fibrolaminar bursting strength and resistance to water.
Lower filter course employing broad-leaved wood fiber is as fibrous layer primary raw material, and is combined with titania aerogel particle, β
-cyclodextrin, carboxymethyl cellulose and Ethylene glycol diglycidyl ether.Wherein, broad-leaved wood fiber is wider, controls after making beating, defibrination
Its fibre length so that the fibrous layer aperture after molding is less, it is possible to some are carried out through the fine particle impurity of upper filter course
Filter.Self specific surface area of titania aerogel particle is big, has intensive tiny hole, it is possible to increase filtering accuracy same
Time, do not affect fibrolaminar air permeability, and the addition of titania aerogel particle can improve fibrolaminar mechanical strength；
And also there is inside beta-schardinger dextrin-cavity, it may have preferably absorption property；Improving filtering accuracy, carboxymethyl cellulose is at this not
It is only used as dispersant, and fibrolaminar cross-link intensity can also be improved together with beta-schardinger dextrin-, Ethylene glycol diglycidyl ether.
Promote bursting strength and resistance to water.
The filter paper of the present invention operationally, is flowed into, from fine pores from thick and porosity gap upper filter course by filtered fluid medium
Lower filter course flow out, impurity is mainly intercepted in the macrovoid of filter course, owing to upper filter course interstitial space is big, has
Huge dust capaciting ability, thus it is greatly prolonged filtration members service life, and filtration resistance is low, and lower filter course closely Small Holes
Less in upper filter course filtered fluid medium and minute impurities microgranule are intercepted by gap further.Filtering accuracy is effectively ensured, has filled
Each fibrolaminar combination property has been waved in distribution.
Additionally, due to by large quantity of air in filter paper, after the impurity such as dust are adsorbed in a large number, can rub when air passes through
Wipe, produce noise, and the nano-cellulose composite coating of the present invention, upper and lower filter course each have the hole of different pore size, thoroughly
Manner is high, and lower filter course is due to TiO 2 particles and the existence of beta-schardinger dextrin-, has a large amount of tiny hole, mistake up and down
Filtering layer is worked in coordination down, it is possible to play Noise Reduction.
As preferably, described composite mortar includes the material of following mass parts: 15 parts of nano-celluloses, 40 parts of titanium dioxide
Aerogel particles, 15 parts of phenoxy resins, 20 parts of dimethylformamides, 10 parts of water；The raw material of described upper filter course includes following matter
The material of amount part: mercerization fiber 30 parts, sisal fiber 15 parts, Radix Calotropis giganteae fibre 15 parts, Ethylene glycol diglycidyl ether 1
Part, dispersant 0.3 part and the desired amount of water；The raw material of described lower filter course includes the material of following mass parts: broad-leaved wood fiber
60 parts, 2 parts of titania aerogel particle, beta-schardinger dextrin-2 parts, carboxymethyl cellulose 1 part, Ethylene glycol diglycidyl ether
1 part and the desired amount of water.
As preferably, a length of 400-600nm of described nano-cellulose, a diameter of 30-50nm；Described phenoxy resin
Molecular weight is between 100000-150000.Phenoxy resin between this molecular weight area is for filter course, aerogel particles in the present invention
Caking property chamber, and resistance to water, resistance to contractility are good.
As preferably, the thickness of described nanofiber composite air filter paper is 0.28-0.36mm, the thickness of described upper filter course
For 0.10-0.15mm, the thickness of described lower filter course is 0.16-0.20mm.
As preferably, the quantification of 105-115g/m of described nanofiber composite air filter paper2, nano-cellulose composite coating accounts for
The 6-10% of nanofiber composite air filter paper gross mass.
As preferably, described dispersant is sodium pyrophosphate or sodium hexameta phosphate.
The preparation method of a kind of above-mentioned nanofiber composite air filter paper, sequentially includes the following steps:
A. the preparation of filter course uncoated paper is gone up: pull an oar to after mercerization fiber, sisal fiber, Radix Calotropis giganteae fibre mixing, slurry concentration
For 1.9-2.5wt%, after making beating is 12-14 ° of SR to slurry beating degree, then carry out defibrination, until beating degree is 16-20 ° of SR,
Prepare slurry a；Ethylene glycol diglycidyl ether is joined in described slurry a, after stirring, prepare slurry b；By dispersant
Joining in described slurry b, the regulation slurry concentration that adds water after being uniformly dispersed, to 1.5-1.9wt%, prepares slurry c；To slurry c
Carry out online and manufacture paper with pulp after molding, prepare upper filter course uncoated paper.
B. descending the preparation of filter course uncoated paper: pull an oar broad-leaved wood fiber, slurry concentration is 2.5-3.0%, and making beating is to slurry
After beating degree is 16-18 ° of SR, then carry out defibrination, until beating degree is 26-30 ° of SR, prepare slurry A；By ethylene glycol bisthioglycolate
Glycidyl ether joins in described slurry A, prepares slurry B after stirring；Titania aerogel particle, β-ring are stuck with paste
Essence and carboxymethyl cellulose join in described slurry B, and the regulation slurry concentration that adds water after being uniformly dispersed, to 1.3-1.7wt%, prepares
Slurry C, carries out online and manufactures paper with pulp after molding slurry C, prepares lower filter course uncoated paper.
The laminating of the most upper and lower filter course: described upper filter course uncoated paper and lower filter course uncoated paper are fitted, is then passed through taking out very
The upper filter course of laminating and lower filter course is prepared after pneumatics squeezing, drying.
D. composite mortar solidification: prepare composite mortar by proportioning, be coated with or be sprayed onto the upper surface of filter course, vacuum drying
After solidifying to form nano-cellulose composite coating, i.e. prepare nanofiber composite air filter paper.
As preferably, after making beating, defibrination, described mercerization fiber, sisal fiber, Radix Calotropis giganteae fibre a length of
2.4-2.6mm, a length of 2.0-2.2mm of described broad-leaved wood fiber.
As preferably, the preparation method of described titania aerogel particle is as follows: by butyl titanate, dehydrated alcohol, toluene
1:15-25:0.02-0.04 in mass ratio mixes, obtained solution a；The glacial acetic acid of dehydrated alcohol, 1-2mol/L is pressed matter with water
Amount mixes than 10-20:3-5:1, obtained solution b；Solution a is carried out supersonic oscillations process at 55-65 DEG C, by solution
B is added drop-wise in the solution a of 2-3 times of quality with the speed of 1-2mL/s；Add quality in solution a is solution a's simultaneously
The aluminium hydroxide of 0.04-0.06 times, after continuing stirring 2-3h, prepares colloidal sol；Described colloidal sol is stood aging 24-48h, then makes
With the normal hexane of excess, colloidal sol is carried out solvent and replace 24-48h, then remove normal hexane, obtain gel, finally gel is existed
At 300-500 DEG C be dried, pulverize after prepare micron-scale titania aerogel particle.
The titania aerogel particle of the present invention, in preparation process, carries out toluene and carries out a pore, then select hydrogen-oxygen
Changing aluminum and carry out secondary pore, it is possible to prepare various sizes of hole, voidage is high, and specific surface area is big, and air permeability is good.And
During the pore of aluminium hydroxide, aluminium hydroxide decomposes becomes aluminium oxide and water, and water is by thermal evaporation pore, and aluminium oxide residual
In titania aerogel particle, it is possible to increase intensity.
As preferably, after preparing described gel, gel is before it is dried through modification: use trim,ethylchlorosilane with just
The mixed liquor of hexane is to gel modified 16-36h at 55-65 DEG C；The wherein mass ratio of trim,ethylchlorosilane, normal hexane and gel
For 30-50:50:8-12.
After gel is modified, there is preferable hydrophobic ability, prevent a large amount of adsorption moisture of titania aerogel particle.
The most modified filter capacity that can improve filter paper and resistance to water.
It is compared with the prior art, the invention has the beneficial effects as follows: on the filter course of the nanofiber composite air filter paper of the present invention
It is provided with breathability height, the nano-cellulose composite coating of water-tolerant, on the premise of ensureing paper permeability and filter efficiency,
Improve the resistance to water of filter paper, weatherability and bursting strength.
Accompanying drawing explanation
Fig. 1 is the structural representation of the nanofiber composite air filter paper of the present invention.
Reference is: upper filter course 1, lower filter course 2, nano-cellulose composite coating 3.
Detailed description of the invention
Below in conjunction with embodiment, the invention will be further described.
Embodiment 1
As it is shown in figure 1, a kind of nanofiber composite air filter paper, including upper filter course 1, lower filter course 2 with coat described upper mistake
The nano-cellulose composite coating 3 of filtering layer upper surface.
Wherein, the thickness of described upper filter course is 0.11-0.12mm, and the thickness of described lower filter course is 0.18-0.19mm.
The preparation method of a kind of nanofiber composite air filter paper, sequentially includes the following steps:
A. the preparation of filter course uncoated paper is gone up: carry out after 30 parts of mercerization fibers, 15 parts of sisal fibers, 15 parts of Radix Calotropis giganteae fibre mixing
Making beating, slurry concentration is 2.2wt%, after making beating is 13 ° of SR to slurry beating degree, then carries out defibrination, until beating degree is 18 °
SR, prepares slurry a；1 part of Ethylene glycol diglycidyl ether is joined in described slurry a, after stirring, prepare slurry b；
Being joined in described slurry b by 0.3 part of sodium pyrophosphate, the regulation slurry concentration that adds water after being uniformly dispersed, to 1.7wt%, prepares slurry
c；Mercerization fiber described in slurry c, sisal fiber, a length of 2.4-2.6mm of Radix Calotropis giganteae fibre.
Slurry c is carried out online and manufactures paper with pulp after molding, prepare upper filter course uncoated paper.
B. descending the preparation of filter course uncoated paper: pull an oar 60 parts of broad-leaved wood fibers, slurry concentration is 2.75%, and making beating is to slurry
After material beating degree is 17 ° of SR, then carry out defibrination, until beating degree is 28 ° of SR, prepare slurry A；By 1 part of ethylene glycol bisthioglycolate
Glycidyl ether joins in described slurry A, prepares slurry B after stirring；By 2 parts of titania aerogel particles, 2
Part beta-schardinger dextrin-and 1 part of carboxymethyl cellulose join in described slurry B, add water regulation slurry concentration extremely after being uniformly dispersed
1.5wt%, prepares slurry c, a length of 2.0-2.2mm of broad-leaved wood fiber described in slurry C.Slurry C is carried out online copy
After causing type, prepare lower filter course uncoated paper.
Wherein, the preparation method of described titania aerogel particle is as follows: by butyl titanate, dehydrated alcohol, toluene by matter
Amount mixes than 1:20:0.03, obtained solution a；By dehydrated alcohol, glacial acetic acid and the water 15:4:1 in mass ratio of 1.5mol/L
Mix, obtained solution b；Solution a is carried out supersonic oscillations process at 60 DEG C, by solution b with the speed of 1.5mL/s
Rate is added drop-wise in the solution a of 2.5 times of quality；In solution a, add the aluminium hydroxide times of 0.05 times that quality is solution a simultaneously
Sodium bicarbonate powder, continue stirring 2.5h after, prepare colloidal sol；Described colloidal sol is stood aging 36h, then uses excess
Normal hexane carries out solvent displacement 36h to colloidal sol, then removes normal hexane, obtains gel.Use trim,ethylchlorosilane and normal hexane
Mixed liquor is to gel modified 24h at 60 DEG C；Wherein trim,ethylchlorosilane, normal hexane are 40:50:10 with the mass ratio of gel.
Finally by modified gel at 400 DEG C be dried, pulverize after prepare micron-scale titania aerogel particle.
The laminating of the most upper and lower filter course: described upper filter course uncoated paper and lower filter course uncoated paper are fitted, is then passed through taking out very
The upper filter course of laminating and lower filter course is prepared after pneumatics squeezing, drying.
D. composite mortar solidification: by 15 parts of a length of 400-600nm, the nano-cellulose of a diameter of 30-50nm, 40 part two
Titania aerogel particle, phenoxy resin between 100000-150000 of 15 parts of molecular weight, 20 parts of dimethylformamides, 10
The proportioning preparation composite mortar of part water, is applied to the upper surface of filter course, and vacuum drying solidify to form the compound painting of nano-cellulose
After Ceng, i.e. prepare nanofiber composite air filter paper.
Embodiment 2
A kind of nanofiber composite air filter paper, including upper filter course, lower filter course and the Nanowire being located at described upper filter course upper surface
Dimension element composite coating.
Wherein, the thickness of described upper filter course is 0.10-0.11mm, and the thickness of described lower filter course is 0.18-0.19mm.
The preparation method of a kind of nanofiber composite air filter paper, sequentially includes the following steps:
A. the preparation of filter course uncoated paper is gone up: carry out after 20 parts of mercerization fibers, 10 parts of sisal fibers, 10 parts of Radix Calotropis giganteae fibre mixing
Making beating, slurry concentration is 1.9wt%, after making beating is 12 ° of SR to slurry beating degree, then carries out defibrination, until beating degree is 16 °
SR, prepares slurry a；0.5 part of Ethylene glycol diglycidyl ether is joined in described slurry a, after stirring, prepare slurry b；
Being joined in described slurry b by 0.2 part of sodium hexameta phosphate, the regulation slurry concentration that adds water after being uniformly dispersed, to 1.5wt%, prepares slurry
Material c；Mercerization fiber described in slurry c, sisal fiber, a length of 2.4-2.6mm of Radix Calotropis giganteae fibre.
Slurry c is carried out online and manufactures paper with pulp after molding, prepare upper filter course uncoated paper.
B. descending the preparation of filter course uncoated paper: pull an oar 50 parts of broad-leaved wood fibers, slurry concentration is 2.5%, and making beating is to slurry
After material beating degree is 16 ° of SR, then carry out defibrination, until beating degree is 26 ° of SR, prepare slurry A；By 0.5 part of ethylene glycol
Diglycidyl ether joins in described slurry A, prepares slurry B after stirring；By 1 part of titania aerogel particle,
1-part beta-schardinger dextrin-and 0.5 part of carboxymethyl cellulose join in described slurry B, add water regulation slurry concentration extremely after being uniformly dispersed
1.3wt%, prepares slurry C, a length of 2.0-2.2mm of broad-leaved wood fiber described in slurry C.Slurry C is carried out online copy
After causing type, prepare lower filter course uncoated paper.
Wherein, the preparation method of described titania aerogel particle is as follows: by butyl titanate, dehydrated alcohol, toluene by matter
Amount mixes than 1:15:0.02, obtained solution a；The glacial acetic acid of dehydrated alcohol, 1mol/L is entered with water 10:3:1 in mass ratio
Row mixing, obtained solution b；Solution a is carried out supersonic oscillations process at 55 DEG C, solution b is dripped with the speed of 1mL/s
It is added in the solution a of 2 times of quality；In solution a, add the aluminium hydroxide of 0.04 times that quality is solution a simultaneously, continue to stir
After mixing 2h, prepare colloidal sol；Described colloidal sol is stood aging 24h, then uses the normal hexane of excess that colloidal sol is carried out solvent displacement
24h, then remove normal hexane, obtain gel.Use the trim,ethylchlorosilane mixed liquor with normal hexane to gel modification at 55 DEG C
36h；Wherein trim,ethylchlorosilane, normal hexane are 30:50:8 with the mass ratio of gel.Finally by modified gel at 300 DEG C
Be dried, pulverize after prepare micron-scale titania aerogel particle.
The laminating of the most upper and lower filter course: described upper filter course uncoated paper and lower filter course uncoated paper are fitted, is then passed through taking out very
The upper filter course of laminating and lower filter course is prepared after pneumatics squeezing, drying.
D. composite mortar solidification: by 10 parts of a length of 400-600nm, the nano-cellulose of a diameter of 30-50nm, 50 parts
Titania aerogel particle, phenoxy resin between 100000-150000 of 10 parts of molecular weight, 25 parts of dimethylformamides, 15
The proportioning preparation composite mortar of part water, is sprayed onto the upper surface of filter course, and vacuum drying solidify to form the compound painting of nano-cellulose
After Ceng, i.e. prepare nanofiber composite air filter paper.
Embodiment 3
A kind of nanofiber composite air filter paper, including upper filter course, lower filter course and the Nanowire being located at described upper filter course upper surface
Dimension element composite coating.
Wherein, the thickness of described upper filter course is 0.14-0.15mm, and the thickness of described lower filter course is 0.19-0.20mm.
The preparation method of a kind of nanofiber composite air filter paper, sequentially includes the following steps:
A. the preparation of filter course uncoated paper is gone up: carry out after 40 parts of mercerization fibers, 20 parts of sisal fibers, 20 parts of Radix Calotropis giganteae fibre mixing
Making beating, slurry concentration is 2.5wt%, after making beating is 14 ° of SR to slurry beating degree, then carries out defibrination, until beating degree is 20 °
SR, prepares slurry a；1.5 parts of Ethylene glycol diglycidyl ethers are joined in described slurry a, after stirring, prepare slurry b；
Being joined in described slurry b by 0.4 part of sodium hexameta phosphate, the regulation slurry concentration that adds water after being uniformly dispersed, to 1.9wt%, prepares slurry
Material c；Mercerization fiber described in slurry c, sisal fiber, a length of 2.4-2.6mm of Radix Calotropis giganteae fibre.
Slurry c is carried out online and manufactures paper with pulp after molding, prepare upper filter course uncoated paper.
B. descending the preparation of filter course uncoated paper: pull an oar 70 parts of broad-leaved wood fibers, slurry concentration is 3.0%, and making beating is to slurry
After material beating degree is 18 ° of SR, then carry out defibrination, until beating degree is 30 ° of SR, prepare slurry A；By 1.5 parts of ethylene glycol
Diglycidyl ether joins in described slurry A, prepares slurry B after stirring；By 3 parts of titania aerogel particles, 3
Part beta-schardinger dextrin-and 1.5 parts of carboxymethyl celluloses join in described slurry B, add water regulation slurry concentration extremely after being uniformly dispersed
1.7wt%, prepares slurry C, a length of 2.0-2.2mm of broad-leaved wood fiber described in slurry C.Slurry C is carried out online copy
After causing type, prepare lower filter course uncoated paper.
Wherein, the preparation method of described titania aerogel particle is as follows: by butyl titanate, dehydrated alcohol, toluene by matter
Amount mixes than 1:25:0.04, obtained solution a；The glacial acetic acid of dehydrated alcohol, 2mol/L is entered with water 20:5:1 in mass ratio
Row mixing, obtained solution b；Solution a is carried out supersonic oscillations process at 65 DEG C, solution b is dripped with the speed of 2mL/s
It is added in the solution a of 3 times of quality；In solution a, add the aluminium hydroxide of 0.06 times that quality is solution a simultaneously, continue to stir
After mixing 3h, prepare colloidal sol；Described colloidal sol is stood aging 48h, then uses the normal hexane of excess that colloidal sol is carried out solvent displacement
48h, then remove normal hexane, obtain gel.Use the trim,ethylchlorosilane mixed liquor with normal hexane to gel modification at 65 DEG C
16h；Wherein trim,ethylchlorosilane, normal hexane are 50:50:12 with the mass ratio of gel.Finally by modified gel at 500 DEG C
Lower be dried, pulverize after prepare the titania aerogel particle of micron-scale.
The laminating of the most upper and lower filter course: described upper filter course uncoated paper and lower filter course uncoated paper are fitted, is then passed through taking out very
The upper filter course of laminating and lower filter course is prepared after pneumatics squeezing, drying.
D. composite mortar solidification: by 20 parts of a length of 400-600nm, the nano-cellulose of a diameter of 30-50nm, 30 parts
Titania aerogel particle, phenoxy resin between 100000-150000 of 20 parts of molecular weight, 15 parts of dimethylformamides, 5
The proportioning preparation composite mortar of part water, is sprayed onto the upper surface of filter course, and vacuum drying solidify to form the compound painting of nano-cellulose
After Ceng, i.e. prepare nanofiber composite air filter paper.
Embodiment 4
A kind of nanofiber composite air filter paper, including upper filter course, lower filter course and the Nanowire being located at described upper filter course upper surface
Dimension element composite coating.
Wherein, the thickness of described upper filter course is 0.11-0.12mm, and the thickness of described lower filter course is 0.19-0.20mm.
The preparation method of a kind of nanofiber composite air filter paper, sequentially includes the following steps:
A. the preparation of filter course uncoated paper is gone up: carry out after 25 parts of mercerization fibers, 16 parts of sisal fibers, 16 parts of Radix Calotropis giganteae fibre mixing
Making beating, slurry concentration is 2.3wt%, after making beating is 13 ° of SR to slurry beating degree, then carries out defibrination, until beating degree is 19 °
SR, prepares slurry a；1.25 parts of Ethylene glycol diglycidyl ethers are joined in described slurry a, after stirring, prepare slurry
b；Being joined in described slurry b by 0.35 part of sodium hexameta phosphate, the regulation slurry concentration that adds water after being uniformly dispersed is to 1.8wt%, system
Obtain slurry c；Mercerization fiber described in slurry c, sisal fiber, a length of 2.4-2.6mm of Radix Calotropis giganteae fibre.To slurry c
Carry out online and manufacture paper with pulp after molding, prepare upper filter course uncoated paper.
B. descending the preparation of filter course uncoated paper: pull an oar 50-70 part broad-leaved wood fiber, slurry concentration is 2.8%, and making beating is extremely
After slurry beating degree is 16-18 ° of SR, then carry out defibrination, until beating degree is 28 ° of SR, prepare slurry A；By 1 part of second two
Alcohol diglycidyl ether joins in described slurry A, prepares slurry B after stirring；By 2 parts of titania aerogel particles,
1-3 part beta-schardinger dextrin-and 1 part of carboxymethyl cellulose join in described slurry B, add water regulation slurry concentration extremely after being uniformly dispersed
1.6wt%, prepares slurry C, a length of 2.0-2.2mm of broad-leaved wood fiber described in slurry C.Slurry C is carried out online copy
After causing type, prepare lower filter course uncoated paper.
Wherein, the preparation method of described titania aerogel particle is as follows: by butyl titanate, dehydrated alcohol, toluene by matter
Amount mixes than 1:22:0.035, obtained solution a；By dehydrated alcohol, glacial acetic acid and the water 16:4:1 in mass ratio of 1.6mol/L
Mix, obtained solution b；Solution a is carried out supersonic oscillations process at 60 DEG C, by solution b with the speed of 1.6mL/s
Rate is added drop-wise in the solution a of 2.5 times of quality；In solution a, add the aluminium hydroxide of 0.045 times that quality is solution a simultaneously,
After continuing stirring 3h, prepare colloidal sol；Described colloidal sol is stood aging 36h, then uses the normal hexane of excess to carry out molten to colloidal sol
Agent displacement 36h, then remove normal hexane, obtain gel.Use the trim,ethylchlorosilane mixed liquor with normal hexane to gel at 60 DEG C
Lower modified 30h；Wherein trim,ethylchlorosilane, normal hexane are 45:50:11 with the mass ratio of gel.Finally modified gel is existed
At 350 DEG C be dried, pulverize after prepare micron-scale titania aerogel particle.
The laminating of the most upper and lower filter course: described upper filter course uncoated paper and lower filter course uncoated paper are fitted, is then passed through taking out very
The upper filter course of laminating and lower filter course is prepared after pneumatics squeezing, drying.
D. composite mortar solidification: by 16 parts of a length of 400-600nm, the nano-cellulose of a diameter of 30-50nm, 35 parts
Titania aerogel particle, phenoxy resin between 100000-150000 of 15 parts of molecular weight, 20 parts of dimethylformamides, 10
The proportioning preparation composite mortar of part water, is applied to the upper surface of filter course, and vacuum drying solidify to form the compound painting of nano-cellulose
After Ceng, i.e. prepare nanofiber composite air filter paper.
Embodiment 5
A kind of nanofiber composite air filter paper, including upper filter course, lower filter course and the Nanowire being located at described upper filter course upper surface
Dimension element composite coating.
Wherein, the thickness of described upper filter course is 0.13-0.14mm, and the thickness of described lower filter course is 0.18-0.19mm.
The preparation method of a kind of nanofiber composite air filter paper, sequentially includes the following steps:
A. the preparation of filter course uncoated paper is gone up: carry out after 36 parts of mercerization fibers, 15 parts of sisal fibers, 17 parts of Radix Calotropis giganteae fibre mixing
Making beating, slurry concentration is 2.2wt%, after making beating is 14 ° of SR to slurry beating degree, then carries out defibrination, until beating degree is 20 °
SR, prepares slurry a；1 part of Ethylene glycol diglycidyl ether is joined in described slurry a, after stirring, prepare slurry b；
Being joined in described slurry b by 0.3 part of sodium hexameta phosphate, the regulation slurry concentration that adds water after being uniformly dispersed, to 1.8wt%, prepares slurry
Material c；Mercerization fiber described in slurry c, sisal fiber, a length of 2.4-2.6mm of Radix Calotropis giganteae fibre.
Slurry c is carried out online and manufactures paper with pulp after molding, prepare upper filter course uncoated paper.
B. descending the preparation of filter course uncoated paper: pull an oar 67 parts of broad-leaved wood fibers, slurry concentration is 2.6%, and making beating is to slurry
After material beating degree is 18 ° of SR, then carry out defibrination, until beating degree is 30 ° of SR, prepare slurry A；By 1 part of ethylene glycol bisthioglycolate
Glycidyl ether joins in described slurry A, prepares slurry B after stirring；By 2 parts of titania aerogel particles, 2
Part beta-schardinger dextrin-and 1 part of carboxymethyl cellulose join in described slurry B, add water regulation slurry concentration extremely after being uniformly dispersed
1.6wt%, prepares slurry C, a length of 2.0-2.2mm of broad-leaved wood fiber described in slurry C.Slurry C is carried out online copy
After causing type, prepare lower filter course uncoated paper.
Wherein, the preparation method of described titania aerogel particle is as follows: by butyl titanate, dehydrated alcohol, toluene by matter
Amount mixes than 1:21:0.03, obtained solution a；By dehydrated alcohol, glacial acetic acid and the water 15:4:1 in mass ratio of 1.5mol/L
Mix, obtained solution b；Solution a is carried out supersonic oscillations process at 60 DEG C, by solution b with the speed of 1.5mL/s
Rate is added drop-wise in the solution a of 2.5 times of quality；In solution a, add the aluminium hydroxide of 0.055 times that quality is solution a simultaneously,
After continuing stirring 2.5h, prepare colloidal sol；Described colloidal sol is stood aging 36h, then uses the normal hexane of excess that colloidal sol is carried out
Solvent displacement 36h, then remove normal hexane, obtain gel.Use the trim,ethylchlorosilane mixed liquor with normal hexane to gel at 60 DEG C
Lower modified 24h；Wherein trim,ethylchlorosilane, normal hexane are 40:50:11 with the mass ratio of gel.Finally modified gel is existed
At 450 DEG C be dried, pulverize after prepare micron-scale titania aerogel particle.
The laminating of the most upper and lower filter course: described upper filter course uncoated paper and lower filter course uncoated paper are fitted, is then passed through taking out very
The upper filter course of laminating and lower filter course is prepared after pneumatics squeezing, drying.
D. composite mortar solidification: by 18 parts of a length of 400-600nm, the nano-cellulose of a diameter of 30-50nm, 45 parts
Titania aerogel particle, phenoxy resin between 100000-150000 of 18 parts of molecular weight, 20 parts of dimethylformamides, 10
The proportioning preparation composite mortar of part water, is applied to the upper surface of filter course, and vacuum drying solidify to form the compound painting of nano-cellulose
After Ceng, i.e. prepare nanofiber composite air filter paper.
The technical specification of the nanofiber composite air filter paper that embodiment 1-5 prepares is as shown in the table:
(quantitative mensuration uses GB/T451.2-2002 paper and the quantitative assay method of cardboard；Bursting strength uses GB/T454-2002 paper
The mensuration of bursting strength.)
Raw materials used, equipment in the present invention, unless otherwise noted, is the conventional raw material of this area, equipment；Side used in the present invention
Method, unless otherwise noted, is the conventional method of this area.
The above, be only presently preferred embodiments of the present invention, not impose any restrictions the present invention, every according to skill of the present invention
Any simple modification, change and the equivalent transformation that above example is made by art essence, all still falls within technical solution of the present invention
Protection domain.
Claims (10)
1. a nanofiber composite air filter paper, it is characterised in that: include filter course (1), lower filter course (2) and be located at the nano-cellulose composite coating (3) of described upper filter course upper surface；Described nano-cellulose composite coating is formed by composite mortar solidification, described composite mortar includes the material of following mass parts: 10-20 part nano-cellulose, 30-50 part titania aerogel particle, 10-20 part phenoxy resin, 15-25 part dimethylformamide, 5-15 part water；The raw material of described upper filter course includes the material of following mass parts: mercerization fiber 20-40 part, sisal fiber 10-20 part, Radix Calotropis giganteae fibre 10-20 part, Ethylene glycol diglycidyl ether 0.5-1.5 part, dispersant 0.2-0.4 part and the desired amount of water；The raw material of described lower filter course includes the material of following mass parts: broad-leaved wood fiber 50-70 part, titania aerogel particle 1-3 part, beta-schardinger dextrin-1-3 part, carboxymethyl cellulose 0.5-1.5 part, Ethylene glycol diglycidyl ether 0.5-1.5 part and the desired amount of water.
2. a kind of nanofiber composite air filter paper as claimed in claim 1, it is characterized in that, described composite mortar includes the material of following mass parts: 15 parts of nano-celluloses, 40 parts of titania aerogel particles, 15 parts of phenoxy resins, 20 parts of dimethylformamides, 10 parts of water；The raw material of described upper filter course includes the material of following mass parts: mercerization fiber 30 parts, sisal fiber 15 parts, Radix Calotropis giganteae fibre 15 parts, Ethylene glycol diglycidyl ether 1 part, dispersant 0.3 part and the desired amount of water；The raw material of described lower filter course includes the material of following mass parts: broad-leaved wood fiber 60 parts, 2 parts of titania aerogel particle, beta-schardinger dextrin-2 parts, carboxymethyl cellulose 1 part, Ethylene glycol diglycidyl ether 1 part and the desired amount of water.
3. a kind of nanofiber composite air filter paper as claimed in claim 1, it is characterised in that a length of 400-600nm of described nano-cellulose, a diameter of 30-50nm；The molecular weight of described phenoxy resin is between 100000-150000.
4. a kind of nanofiber composite air filter paper as claimed in claim 1, it is characterized in that, the thickness of described nanofiber composite air filter paper is 0.28-0.36mm, and the thickness of described upper filter course is 0.10-0.15mm, and the thickness of described lower filter course is 0.16-0.20mm.
5. a kind of nanofiber composite air filter paper as claimed in claim 4, it is characterised in that the quantification of 105-115g/m of described nanofiber composite air filter paper2, nano-cellulose composite coating accounts for the 6-10% of nanofiber composite air filter paper gross mass.
6. a kind of nanofiber composite air filter paper as claimed in claim 1, it is characterised in that described dispersant is sodium pyrophosphate or sodium hexameta phosphate.
7. the preparation method of a kind of nanofiber composite air filter paper as described in one of claim 1-6, it is characterised in that sequentially include the following steps:
A. the preparation of filter course uncoated paper is gone up: pull an oar to after mercerization fiber, sisal fiber, Radix Calotropis giganteae fibre mixing, slurry concentration is 1.9-2.5wt%, after making beating is 12-14 ° of SR to slurry beating degree, then carries out defibrination, until beating degree is 16-20 ° of SR, prepare slurry a；Ethylene glycol diglycidyl ether is joined in described slurry a, after stirring, prepare slurry b；Being joined by dispersant in described slurry b, the regulation slurry concentration that adds water after being uniformly dispersed, to 1.5-1.9wt%, prepares slurry c；Slurry c is carried out online and manufactures paper with pulp after molding, prepare upper filter course uncoated paper；
B. descending the preparation of filter course uncoated paper: pull an oar broad-leaved wood fiber, slurry concentration is 2.5-3.0%, after making beating is 16-18 ° of SR to slurry beating degree, then carries out defibrination, until beating degree is 26-30 ° of SR, prepares slurry A；Ethylene glycol diglycidyl ether is joined in described slurry A, after stirring, prepare slurry B；Titania aerogel particle, beta-schardinger dextrin-and carboxymethyl cellulose being joined in described slurry B, the regulation slurry concentration that adds water after being uniformly dispersed, to 1.3-1.7wt%, prepares slurry C, slurry C carries out online and manufactures paper with pulp after molding, prepares lower filter course uncoated paper；
The laminating of the most upper and lower filter course: described upper filter course uncoated paper and lower filter course uncoated paper are fitted, prepares the upper filter course of laminating and lower filter course after being then passed through evacuation squeezing, drying；
D. composite mortar solidification: prepare composite mortar by proportioning, is coated with or is sprayed onto the upper surface of filter course, after vacuum drying solidify to form nano-cellulose composite coating, i.e. prepare nanofiber composite air filter paper.
The preparation method of a kind of nanofiber composite air filter paper the most as claimed in claim 7, it is characterized in that, through making beating, after defibrination, described mercerization fiber, sisal fiber, a length of 2.4-2.6mm of Radix Calotropis giganteae fibre, a length of 2.0-2.2mm of described broad-leaved wood fiber.
The preparation method of a kind of nanofiber composite air filter paper the most as claimed in claim 7, it is characterized in that, the preparation method of described titania aerogel particle is as follows: mixed by butyl titanate, dehydrated alcohol, toluene 1:15-25:0.02-0.04 in mass ratio, obtained solution a；The glacial acetic acid of dehydrated alcohol, 1-2mol/L is mixed with water 10-20:3-5:1 in mass ratio, obtained solution b；Solution a is carried out supersonic oscillations process at 55-65 DEG C, solution b is added drop-wise in the solution a of 2-3 times of quality with the speed of 1-2mL/s；In solution a, add the aluminium hydroxide of 0.04-0.06 times that quality is solution a simultaneously, after continuing stirring 2-3h, prepare colloidal sol；Described colloidal sol is stood aging 24-48h, then uses the normal hexane of excess that colloidal sol carries out solvent displacement 24-48h, then remove normal hexane, obtain gel, finally gel is dried at 300-500 DEG C, pulverize after prepare the titania aerogel particle of micron-scale.
The preparation method of a kind of nanofiber composite air filter paper the most as claimed in claim 9, it is characterized in that, after preparing described gel, gel is before it is dried through modification: use trim,ethylchlorosilane and the mixed liquor of normal hexane to gel modified 16-36h at 55-65 DEG C；Wherein trim,ethylchlorosilane, normal hexane are 30-50:50:8-12 with the mass ratio of gel.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107670496A (en) * | 2017-10-17 | 2018-02-09 | 柏忆 | A kind of purification of air liquid and preparation method thereof |
| CN111685420A (en) * | 2020-06-19 | 2020-09-22 | 齐鲁工业大学 | Disposable mask using nanofiber laminated paper-based filter material as middle filter layer |
| CN113509800A (en) * | 2020-04-10 | 2021-10-19 | 中国科学技术大学 | Multi-scale structure plant fiber air filtering material and preparation method and application thereof |
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| JP2006342489A (en) * | 2006-09-27 | 2006-12-21 | Lintec Corp | Method for producing resin-containing paper |
| CN202809390U (en) * | 2011-12-30 | 2013-03-20 | 东莞市海莎过滤器有限公司 | Oil-saving filter paper used for fuel oil filter |
| CN104420400A (en) * | 2013-08-30 | 2015-03-18 | 珠海市红旌发展有限公司 | Preparation method of air filtering paper containing nanocellulose |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2006342489A (en) * | 2006-09-27 | 2006-12-21 | Lintec Corp | Method for producing resin-containing paper |
| CN202809390U (en) * | 2011-12-30 | 2013-03-20 | 东莞市海莎过滤器有限公司 | Oil-saving filter paper used for fuel oil filter |
| CN104420400A (en) * | 2013-08-30 | 2015-03-18 | 珠海市红旌发展有限公司 | Preparation method of air filtering paper containing nanocellulose |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107670496A (en) * | 2017-10-17 | 2018-02-09 | 柏忆 | A kind of purification of air liquid and preparation method thereof |
| CN113509800A (en) * | 2020-04-10 | 2021-10-19 | 中国科学技术大学 | Multi-scale structure plant fiber air filtering material and preparation method and application thereof |
| CN111685420A (en) * | 2020-06-19 | 2020-09-22 | 齐鲁工业大学 | Disposable mask using nanofiber laminated paper-based filter material as middle filter layer |
| CN111685420B (en) * | 2020-06-19 | 2021-07-16 | 齐鲁工业大学 | Disposable mask using nanofiber laminated paper-based filter material as middle filter layer |
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Denomination of invention: Nanofiber composite air filter paper and production method thereof Effective date of registration: 20191108 Granted publication date: 20170915 Pledgee: Hengfeng Bank Co., Ltd. Hangzhou Fuyang sub branch Pledgor: Hangzhou Special Paper Industry Co., Ltd. Registration number: Y2019990000488 |