CN109173713A - A kind of environmental protection material for air purification and preparation method thereof - Google Patents
A kind of environmental protection material for air purification and preparation method thereof Download PDFInfo
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
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- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
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Abstract
The present invention relates to a kind of environmentally friendly material for air purification and preparation method thereof, including porous base and it is attached to the cellular superficial layer of substrate surface, the base is made of the raw material below according to parts by weight: 28-36 parts of mesoporous AcF micro mist, 1-5 parts of mahogany acid, 11-19 parts of activated alumina containing cerium, 5-12 parts of nano titanic oxide sol, chitosan 3-7 parts amino modified；The superficial layer is made of the raw material below according to parts by weight: 44-54 parts of methyl diphenylene diisocyanate, 14-18 parts of modified corn starch, 4-8 parts of dimethyl fumarate, powdered carbon 10-16 parts coconut activated, 3-5 parts of polyacrylonitrile carbon fiber, 2-4 parts of foaming agent.The present invention is by the coarse filtration of superficial layer and the essence filtering of base, to realize preferable air purification effect, can effectively remove the serial pollutant such as formaldehyde, ammonia, benzene, TVOC in air, and it is heat-resist, stability is good, long service life.
Description
Technical field
The present invention relates to material for air purification technical field more particularly to a kind of environmentally friendly material for air purification and its preparation sides
Method.
Background technique
Air cleaning, which refers to, to remove haze for indoor various environmental problems offer sterilizings, depositing dust, dispels harmful finishing
The total solution of residual and peculiar smell etc. can effectively improve life, office conditions in this way, promote physically and mentally healthy.Indoor ring
Border pollutant and pollution source mainly include radgas, mould, particulate matter, finishing residual, secondhand smoke etc..
The current indoor finishing due to having used a variety of artificial materials, thus there is the pollution such as formaldehyde, toluene and nocuousness
Gas is widely present, this produces serious harm to people's health.Material for air purification mainly passes through physics at present
The technologies such as absorption, chemical method, catalysis remove nuisance.
But above-mentioned purification style purification is not thorough, and is extremely difficult to preferable clean-up effect, and purify the range of range
It is limited.Also, some scavenging materials are easy to produce obstruction in purification process, to influence the effect of purification.
Based on this, it is necessary to a kind of environmentally friendly material for air purification is provided, it is of the existing technology to solve the problems, such as.
And in the Chinese patent application 201110031086.0(applying date: on January 28th, 2011) disclose it is a kind of it is at low cost,
Good air purification effect, oxidation type air purifying material without secondary pollution have inorganic oxygen for load on inorganic adsorbing material
The material of agent.Present invention simultaneously provides a kind of methods for preparing the material, i.e., first that inorganic adsorbing material is dry, make its water
Divide content < 4%；Then compound concentration is inorganic oxidizer aqueous solution of 5% ~ 20% (g/ml)；Inorganic oxidizer aqueous solution is added
18 ~ 36h is impregnated in inorganic adsorbing material, extra liquid is drained, in an oven in 50 DEG C ~ 130 DEG C dryings.But only with immersion side
Formula loads oxidant, loads insufficient, insecure, the unendurable disadvantage of the purification shown.
And in the Chinese patent application 201610742321.8(applying date: on August 28th, 2016) disclose a kind of anion
Air purification filter material and preparation method thereof, the anion air purifying filtering material are to be answered by what internal layer and outer layer were constituted
Sheet combination structure, internal layer are substrate layer, and outer layer is latex functional layer, and the substrate layer is using spunlace non-woven cloth as substrate；The latex
Component and the parts by weight composition of functional layer are as follows: 60-70 parts of latex, 15-20 parts of synthetic resin, and 5-10 parts of negative ion powder, bamboo charcoal
20-30 parts of fiber powder, 5-8 parts of diatom ooze, magnetic order mesoporous medium 3-5 parts.Magnetism ordered mesoporous carbon of the present invention
Or magnetic order mesoporous nickel ferrite based magnetic loaded has huge specific surface area and three dimensional pore structures abundant, high-specific surface area is conducive to bear
The adsorption storage of ion powder and diatom ooze；Regular orderly open duct, size adjustable aperture be that anion is generated and provided
Path, is conducive to that anion is slowly lasting for a long time to be generated, and improves the using effect of anion air purifying filtering material, prolongs
Its long service life.But the material for air purification clean-up effect is limited, it is difficult to play thorough air purification effect, and purify model
It is with limit.
Summary of the invention
Aiming at the problems existing in the prior art, the invention proposes a kind of environmentally friendly material for air purification, pass through superficial layer
Coarse filtration and base essence filtering, to realize preferable air purification effect, meanwhile, pass through the cooperation of superficial layer and base
It solves scavenging material and is easy obstructing problem when in use, it is dirty that the series such as formaldehyde, ammonia, benzene, TVOC in air can be effectively removed
Contaminate object, and it is heat-resist, stability is good, long service life, have broad application prospects.
In order to achieve the above-mentioned object of the invention, the present invention the following technical schemes are provided:
A kind of environmental protection material for air purification, including porous base and is attached to the cellular superficial layer of substrate surface, described
Base is made of the raw material below according to parts by weight: 28-36 parts of mesoporous AcF micro mist, 1-5 parts of mahogany acid, active oxidation containing cerium
It is 11-19 parts of aluminium, 5-12 parts of nano titanic oxide sol, chitosan 3-7 parts amino modified；
The superficial layer is made of the raw material below according to parts by weight: 44-54 parts of methyl diphenylene diisocyanate, modified corn
14-18 parts of starch, 4-8 parts of dimethyl fumarate, powdered carbon 10-16 parts coconut activated, 3-5 parts of polyacrylonitrile carbon fiber, foaming agent
2-4 parts.
Preferably, the base is made of the raw material below according to parts by weight: 32 parts of mesoporous AcF micro mist, petroleum
3 parts of sulfonic acid, 15 parts of activated alumina containing cerium, 8.5 parts of nano titanic oxide sol, 5 parts of amino modified chitosan；
The superficial layer is made of the raw material below according to parts by weight: 49 parts of methyl diphenylene diisocyanate, modified corn form sediment
16 parts of powder, 6 parts of dimethyl fumarate, 13 parts of coconut activated powdered carbon, 4 parts of polyacrylonitrile carbon fiber, 3 parts of foaming agent.
Preferably, the activated alumina containing cerium the preparation method comprises the following steps: by γ-Al2O3It is placed in beveller and grinds
Mill, and 80-140 mesh is crossed, then by the γ-Al after 5 parts of sievings2O3The cerous nitrate that the concentration for being impregnated in 25 parts is 0.15mol/L
It in solution, is placed in 25 DEG C of constant temperature oscillators with the speed oscillation of 300r/min for 24 hours, then filters, wash, then be placed in 100
DEG C baking oven in dry 12h to get activated alumina containing cerium.
Preferably, the amino modified chitosan is made by the following method: 4 parts of chitosan is added
In the aqueous acetic acid that 200ml volumetric concentration is 2%, after being completely dissolved, 150ml propyl alcohol is added and is blended, uses sodium hydrate aqueous solution
Adjusting pH value is 5, and the NSC 209983 that 10ml concentration is 20mg/ml is added, adds 0.5 part of hydroboration cyanogen potassium, at room temperature
Stirring for 24 hours, then with sodium hydrate aqueous solution tune pH value to 7, falls into 200ml acetic acid precipitating, centrifugation, and sediment is with volumetric concentration
The washing of 85% ethanol water, freeze-drying obtain amino modified chitosan.
Preferably, the modified corn starch is prepared by following methods:
(1) in the water for weighing 20 parts of 5 parts of cornstarch additions, 10 parts of malic acid and 5 parts of glycerol are added, are sent into reaction kettle,
Temperature in reaction kettle is controlled at the uniform velocity to be stirred to react 20-30 minutes, taking-up is cooled to room temperature, and is re-fed into freezing and is set at 80-85 DEG C
It is standby, it is freezed 40 minutes under subzero 15 DEG C of environment, carries out cold-resistant processing；
(2) product after freezing processing is sent into ball mill, continuously grinding 4 hours, crosses 150-250 mesh, drying moisture content is extremely
5%, obtain modified corn starch.
Preferably, the length of the polyacrylonitrile carbon fiber is 0.5-5mm, and diameter is 50-200 μm.
Preferably, the foaming agent is food grade ammonium chloride, edible grade saleratus, one in azodicarbonamide
Kind.
Preferably, the present invention also provides the preparation methods of above-mentioned environmentally friendly material for air purification, including following step
It is rapid:
(1) preparation of base: will contain cerium activated alumina and crush, cross 200 meshes, then will the aluminium powder of active oxidation containing cerium obtained
It is mixed with 1.5 times of deionized water of its quality, the aluminum solutions of active oxidation containing cerium is made；
Amino modified chitosan is mixed with mahogany acid, nano titanic oxide sol is then added, is warming up to 50 DEG C and at this
At a temperature of while stirring be added the aluminum solutions of active oxidation containing cerium；It then heats to 75 DEG C and is added while stirring at such a temperature and be situated between
Hole AcF micro mist；Then 22min, ultrasonic power 1000W, then drying, calcining are ultrasonically treated to get base；
(2) preparation of slurry: methyl diphenylene diisocyanate being added in the deionized water of 5-10 times of its weight, and stirring is equal
It is even, form methyl diphenylene diisocyanate slurries；Then cocoanut active charcoal is added, is warming up to 60-70 DEG C, ultrasonic oscillation 2-
3h；Dimethyl fumarate is added, be warming up to 80-90 DEG C and polyacrylonitrile carbon fiber is added while stirring at such a temperature；Most
After be warming up to 95 DEG C and modified corn starch and foaming agent be added, stir 3-5min to get foamed slurry；
(3) preparation of superficial layer: foamed slurry is injected into foaming pipette tips, and foamed slurry is ejected into base by foaming pipette tips
On the surface of layer, to get superficial layer after natural cooling solidification.
Preferably, the condition of the calcining in the step (1) are as follows: in 500 DEG C of calcining 3.5h.
Preferably, the temperature of the foaming pipette tips in the step (3) is 45-55 DEG C, injection pressure 13-
16MPa。
Compared with prior art, the present invention it has the advantages that
(1) present invention passes through the mutual cooperation of superficial layer and base, to realize preferable air purification effect；Firstly, passing through
Cellular superficial layer carries out coarse filtration to air, adsorbs to larger particles in air, prevents it from blocking base, influences
Air purification effect, and the superficial layer forms porous honeycomb structure by foaming effect, can enhance the air of absorption
Effect, and by the way that modified corn starch, coconut activated powdered carbon are added in superficial layer, so that it is net to air to further enhance it
Change effect；And porous base can realize air essence filtering, can further by superficial layer it is untreated fall air further
Purification, to realize preferable air purification effect, and by the way that mesoporous AcF micro mist is added in base, base can be made to be formed
Numerous cavernous structure, thus realize the contact area of air and base, and activated alumina containing cerium, which is added, has preferable oxygen
Change restoring function, can effectively decompose the pernicious gas in air, and the aluminium oxide for mixing cerium has stronger adsorption capacity, can incite somebody to action
Air is adsorbed, so as to achieve the purpose of purifying the air；And the amino modified chitosan being added has biggish specific surface area, it can
Effectively absorption carries out the pernicious gas in base, to realize preferable air purification effect；And the nano-titanium dioxide being added
Colloidal sol have photocatalytic activity, formaldehyde in air, benzene, TVOC(total volatile organic compounds can be effectively removed) etc. air pollutions
Object improves air quality.
(2) present invention is by the way that foamed slurry to be ejected into base, to can realize that superficial layer is preferably bonded with base
Power improves the stability of material for air purification of the invention, improves its service life.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, technical solution of the present invention will be carried out below
Clear, complete description.Obviously, the described embodiment is only a part of the embodiment of the present invention, instead of all the embodiments.
Based on the embodiments of the present invention, those of ordinary skill in the art obtained institute without making creative work
There are other embodiments, belongs to the range that the present invention is protected.
Embodiment 1
The environmentally friendly material for air purification of the present embodiment including porous base and is attached to the cellular surface of substrate surface
Layer, the base are made of the raw material below according to parts by weight: 28 parts of mesoporous AcF micro mist, 1 part of mahogany acid, active oxygen containing cerium
Change 11 parts of aluminium, 5 parts of nano titanic oxide sol, 3 parts of amino modified chitosan；
The superficial layer is made of the raw material below according to parts by weight: 44 parts of methyl diphenylene diisocyanate, modified corn form sediment
14 parts of powder, 4 parts of dimethyl fumarate, 10 parts of coconut activated powdered carbon, 3 parts of polyacrylonitrile carbon fiber, 2 parts of foaming agent.
Wherein, the activated alumina containing cerium the preparation method comprises the following steps: by γ-Al2O3It is placed in beveller and grinds, and cross 80-
140 meshes, then by the γ-Al after 5 parts of sievings2O3Be impregnated in 25 parts concentration be 0.15mol/L cerous nitrate solution in, and
It is placed in 25 DEG C of constant temperature oscillators with the speed oscillation of 300r/min for 24 hours, then filters, wash, then be placed in 100 DEG C of baking oven
Dry 12h is to get activated alumina containing cerium.
Wherein, the amino modified chitosan is made by the following method: it is dense that 200ml volume is added in 4 parts of chitosan
After being completely dissolved, 150ml propyl alcohol to be added and is blended in 2% aqueous acetic acid, adjust pH value with sodium hydrate aqueous solution is degree
5, the NSC 209983 that 10ml concentration is 20mg/ml is added, adds 0.5 part of hydroboration cyanogen potassium, is stirred at room temperature for 24 hours, then
With sodium hydrate aqueous solution tune pH value to 7,200ml acetic acid precipitating, centrifugation are fallen into, sediment volumetric concentration is 85% ethanol water
Solution washing, freeze-drying obtain amino modified chitosan.
Wherein, the modified corn starch is prepared by following methods:
(1) in the water for weighing 20 parts of 5 parts of cornstarch additions, 10 parts of malic acid and 5 parts of glycerol are added, are sent into reaction kettle,
Temperature in reaction kettle is controlled at the uniform velocity to be stirred to react 20 minutes, taking-up is cooled to room temperature, and freezing equipment is re-fed into, zero at 80 DEG C
It is freezed 40 minutes under lower 15 DEG C of environment, carries out cold-resistant processing；
(2) product after freezing processing is sent into ball mill, continuously grinding 4 hours, crosses 150-250 mesh, drying moisture content is extremely
5%, obtain modified corn starch.
Wherein, the length of the polyacrylonitrile carbon fiber is 0.5-5mm, and diameter is 50-200 μm.
Wherein, the foaming agent is one of food grade ammonium chloride, edible grade saleratus, azodicarbonamide.
Wherein, the present invention also provides the preparation methods of above-mentioned environmentally friendly material for air purification, comprising the following steps:
(1) preparation of base: will contain cerium activated alumina and crush, cross 200 meshes, then will the aluminium powder of active oxidation containing cerium obtained
It is mixed with 1.5 times of deionized water of its quality, the aluminum solutions of active oxidation containing cerium is made；
Amino modified chitosan is mixed with mahogany acid, nano titanic oxide sol is then added, is warming up to 50 DEG C and at this
At a temperature of while stirring be added the aluminum solutions of active oxidation containing cerium；It then heats to 75 DEG C and is added while stirring at such a temperature and be situated between
Hole AcF micro mist；Then 22min, ultrasonic power 1000W, then drying, calcining are ultrasonically treated to get base；
(2) preparation of slurry: methyl diphenylene diisocyanate being added in the deionized water of 5-10 times of its weight, and stirring is equal
It is even, form methyl diphenylene diisocyanate slurries；Then cocoanut active charcoal is added, is warming up to 60 DEG C, ultrasonic oscillation 2h；Again
Dimethyl fumarate is added, is warming up to 80 DEG C and polyacrylonitrile carbon fiber is added while stirring at such a temperature；Finally it is warming up to
95 DEG C and modified corn starch and foaming agent is added, stirs 3min to get foamed slurry；
(3) preparation of superficial layer: foamed slurry is injected into foaming pipette tips, and foamed slurry is ejected into base by foaming pipette tips
On the surface of layer, to get superficial layer after natural cooling solidification.
Wherein, the condition of the calcining in the step (1) are as follows: in 500 DEG C of calcining 3.5h.
Wherein, the temperature of the foaming pipette tips in the step (3) is 45 DEG C, injection pressure 13MPa.
Embodiment 2
The environmentally friendly material for air purification of the present embodiment including porous base and is attached to the cellular surface of substrate surface
Layer, the base are made of the raw material below according to parts by weight: 36 parts of mesoporous AcF micro mist, 5 parts of mahogany acid, active oxygen containing cerium
Change 19 parts of aluminium, 12 parts of nano titanic oxide sol, 7 parts of amino modified chitosan；
The superficial layer is made of the raw material below according to parts by weight: 54 parts of methyl diphenylene diisocyanate, modified corn form sediment
18 parts of powder, 8 parts of dimethyl fumarate, 16 parts of coconut activated powdered carbon, 5 parts of polyacrylonitrile carbon fiber, 4 parts of foaming agent.
Wherein, the activated alumina containing cerium the preparation method comprises the following steps: by γ-Al2O3It is placed in beveller and grinds, and cross 80-
140 meshes, then by the γ-Al after 5 parts of sievings2O3Be impregnated in 25 parts concentration be 0.15mol/L cerous nitrate solution in, and
It is placed in 25 DEG C of constant temperature oscillators with the speed oscillation of 300r/min for 24 hours, then filters, wash, then be placed in 100 DEG C of baking oven
Dry 12h is to get activated alumina containing cerium.
Wherein, the amino modified chitosan is made by the following method: it is dense that 200ml volume is added in 4 parts of chitosan
After being completely dissolved, 150ml propyl alcohol to be added and is blended in 2% aqueous acetic acid, adjust pH value with sodium hydrate aqueous solution is degree
5, the NSC 209983 that 10ml concentration is 20mg/ml is added, adds 0.5 part of hydroboration cyanogen potassium, is stirred at room temperature for 24 hours, then
With sodium hydrate aqueous solution tune pH value to 7,200ml acetic acid precipitating, centrifugation are fallen into, sediment volumetric concentration is 85% ethanol water
Solution washing, freeze-drying obtain amino modified chitosan.
Wherein, the modified corn starch is prepared by following methods:
(1) in the water for weighing 20 parts of 5 parts of cornstarch additions, 10 parts of malic acid and 5 parts of glycerol are added, are sent into reaction kettle,
Temperature in reaction kettle is controlled at the uniform velocity to be stirred to react 30 minutes, taking-up is cooled to room temperature, and freezing equipment is re-fed into, zero at 85 DEG C
It is freezed 40 minutes under lower 15 DEG C of environment, carries out cold-resistant processing；
(2) product after freezing processing is sent into ball mill, continuously grinding 4 hours, crosses 150-250 mesh, drying moisture content is extremely
5%, obtain modified corn starch.
Wherein, the length of the polyacrylonitrile carbon fiber is 0.5-5mm, and diameter is 50-200 μm.
Wherein, the foaming agent is one of food grade ammonium chloride, edible grade saleratus, azodicarbonamide.
Wherein, the present invention also provides the preparation methods of above-mentioned environmentally friendly material for air purification, comprising the following steps:
(1) preparation of base: will contain cerium activated alumina and crush, cross 200 meshes, then will the aluminium powder of active oxidation containing cerium obtained
It is mixed with 1.5 times of deionized water of its quality, the aluminum solutions of active oxidation containing cerium is made；
Amino modified chitosan is mixed with mahogany acid, nano titanic oxide sol is then added, is warming up to 50 DEG C and at this
At a temperature of while stirring be added the aluminum solutions of active oxidation containing cerium；It then heats to 75 DEG C and is added while stirring at such a temperature and be situated between
Hole AcF micro mist；Then 22min, ultrasonic power 1000W, then drying, calcining are ultrasonically treated to get base；
(2) preparation of slurry: methyl diphenylene diisocyanate being added in the deionized water of 5-10 times of its weight, and stirring is equal
It is even, form methyl diphenylene diisocyanate slurries；Then cocoanut active charcoal is added, is warming up to 70 DEG C, ultrasonic oscillation 3h；Again
Dimethyl fumarate is added, is warming up to 90 DEG C and polyacrylonitrile carbon fiber is added while stirring at such a temperature；Finally it is warming up to
95 DEG C and modified corn starch and foaming agent is added, stirs 5min to get foamed slurry；
(3) preparation of superficial layer: foamed slurry is injected into foaming pipette tips, and foamed slurry is ejected into base by foaming pipette tips
On the surface of layer, to get superficial layer after natural cooling solidification.
Wherein, the condition of the calcining in the step (1) are as follows: in 500 DEG C of calcining 3.5h.
Wherein, the temperature of the foaming pipette tips in the step (3) is 55 DEG C, injection pressure 16MPa.
Embodiment 3
The environmentally friendly material for air purification of the present embodiment including porous base and is attached to the cellular surface of substrate surface
Layer, the base are made of the raw material below according to parts by weight: 32 parts of mesoporous AcF micro mist, 3 parts of mahogany acid, active oxygen containing cerium
Change 15 parts of aluminium, 8.5 parts of nano titanic oxide sol, 5 parts of amino modified chitosan；
The superficial layer is made of the raw material below according to parts by weight: 49 parts of methyl diphenylene diisocyanate, modified corn form sediment
16 parts of powder, 6 parts of dimethyl fumarate, 13 parts of coconut activated powdered carbon, 4 parts of polyacrylonitrile carbon fiber, 3 parts of foaming agent.
Wherein, the activated alumina containing cerium the preparation method comprises the following steps: by γ-Al2O3It is placed in beveller and grinds, and cross 80-
140 meshes, then by the γ-Al after 5 parts of sievings2O3Be impregnated in 25 parts concentration be 0.15mol/L cerous nitrate solution in, and
It is placed in 25 DEG C of constant temperature oscillators with the speed oscillation of 300r/min for 24 hours, then filters, wash, then be placed in 100 DEG C of baking oven
Dry 12h is to get activated alumina containing cerium.
Wherein, the amino modified chitosan is made by the following method: it is dense that 200ml volume is added in 4 parts of chitosan
After being completely dissolved, 150ml propyl alcohol to be added and is blended in 2% aqueous acetic acid, adjust pH value with sodium hydrate aqueous solution is degree
5, the NSC 209983 that 10ml concentration is 20mg/ml is added, adds 0.5 part of hydroboration cyanogen potassium, is stirred at room temperature for 24 hours, then
With sodium hydrate aqueous solution tune pH value to 7,200ml acetic acid precipitating, centrifugation are fallen into, sediment volumetric concentration is 85% ethanol water
Solution washing, freeze-drying obtain amino modified chitosan.
Wherein, the modified corn starch is prepared by following methods:
(1) in the water for weighing 20 parts of 5 parts of cornstarch additions, 10 parts of malic acid and 5 parts of glycerol are added, are sent into reaction kettle,
Temperature in reaction kettle is controlled at the uniform velocity to be stirred to react 25 minutes, taking-up is cooled to room temperature, and freezing equipment is re-fed into, zero at 83 DEG C
It is freezed 40 minutes under lower 15 DEG C of environment, carries out cold-resistant processing；
(2) product after freezing processing is sent into ball mill, continuously grinding 4 hours, crosses 150-250 mesh, drying moisture content is extremely
5%, obtain modified corn starch.
Wherein, the length of the polyacrylonitrile carbon fiber is 0.5-5mm, and diameter is 50-200 μm.
Wherein, the foaming agent is one of food grade ammonium chloride, edible grade saleratus, azodicarbonamide.
Wherein, the present invention also provides the preparation methods of above-mentioned environmentally friendly material for air purification, comprising the following steps:
(1) preparation of base: will contain cerium activated alumina and crush, cross 200 meshes, then will the aluminium powder of active oxidation containing cerium obtained
It is mixed with 1.5 times of deionized water of its quality, the aluminum solutions of active oxidation containing cerium is made；
Amino modified chitosan is mixed with mahogany acid, nano titanic oxide sol is then added, is warming up to 50 DEG C and at this
At a temperature of while stirring be added the aluminum solutions of active oxidation containing cerium；It then heats to 75 DEG C and is added while stirring at such a temperature and be situated between
Hole AcF micro mist；Then 22min, ultrasonic power 1000W, then drying, calcining are ultrasonically treated to get base；
(2) preparation of slurry: methyl diphenylene diisocyanate being added in the deionized water of 5-10 times of its weight, and stirring is equal
It is even, form methyl diphenylene diisocyanate slurries；Then cocoanut active charcoal is added, is warming up to 65 DEG C, ultrasonic oscillation 2.5h；
Dimethyl fumarate is added, be warming up to 85 DEG C and polyacrylonitrile carbon fiber is added while stirring at such a temperature；Finally heat up
To 95 DEG C and modified corn starch and foaming agent is added, stirs 4min to get foamed slurry；
(3) preparation of superficial layer: foamed slurry is injected into foaming pipette tips, and foamed slurry is ejected into base by foaming pipette tips
On the surface of layer, to get superficial layer after natural cooling solidification.
Wherein, the condition of the calcining in the step (1) are as follows: in 500 DEG C of calcining 3.5h.
Wherein, the temperature of the foaming pipette tips in the step (3) is 50 DEG C, injection pressure 15MPa.
Embodiment 4
The environmentally friendly material for air purification of the present embodiment including porous base and is attached to the cellular surface of substrate surface
Layer, the base are made of the raw material below according to parts by weight: 30 parts of mesoporous AcF micro mist, 2 parts of mahogany acid, active oxygen containing cerium
Change 13 parts of aluminium, 7 parts of nano titanic oxide sol, 4 parts of amino modified chitosan；
The superficial layer is made of the raw material below according to parts by weight: 46 parts of methyl diphenylene diisocyanate, modified corn form sediment
15 parts of powder, 5 parts of dimethyl fumarate, 12 parts of coconut activated powdered carbon, 3.5 parts of polyacrylonitrile carbon fiber, 2.5 parts of foaming agent.
Wherein, the activated alumina containing cerium the preparation method comprises the following steps: by γ-Al2O3It is placed in beveller and grinds, and cross 80-
140 meshes, then by the γ-Al after 5 parts of sievings2O3Be impregnated in 25 parts concentration be 0.15mol/L cerous nitrate solution in, and
It is placed in 25 DEG C of constant temperature oscillators with the speed oscillation of 300r/min for 24 hours, then filters, wash, then be placed in 100 DEG C of baking oven
Dry 12h is to get activated alumina containing cerium.
Wherein, the amino modified chitosan is made by the following method: it is dense that 200ml volume is added in 4 parts of chitosan
After being completely dissolved, 150ml propyl alcohol to be added and is blended in 2% aqueous acetic acid, adjust pH value with sodium hydrate aqueous solution is degree
5, the NSC 209983 that 10ml concentration is 20mg/ml is added, adds 0.5 part of hydroboration cyanogen potassium, is stirred at room temperature for 24 hours, then
With sodium hydrate aqueous solution tune pH value to 7,200ml acetic acid precipitating, centrifugation are fallen into, sediment volumetric concentration is 85% ethanol water
Solution washing, freeze-drying obtain amino modified chitosan.
Wherein, the modified corn starch is prepared by following methods:
(1) in the water for weighing 20 parts of 5 parts of cornstarch additions, 10 parts of malic acid and 5 parts of glycerol are added, are sent into reaction kettle,
Temperature in reaction kettle is controlled at the uniform velocity to be stirred to react 20-30 minutes, taking-up is cooled to room temperature, and is re-fed into freezing and is set at 80-85 DEG C
It is standby, it is freezed 40 minutes under subzero 15 DEG C of environment, carries out cold-resistant processing；
(2) product after freezing processing is sent into ball mill, continuously grinding 4 hours, crosses 150-250 mesh, drying moisture content is extremely
5%, obtain modified corn starch.
Wherein, the length of the polyacrylonitrile carbon fiber is 0.5-5mm, and diameter is 50-200 μm.
Wherein, the foaming agent is one of food grade ammonium chloride, edible grade saleratus, azodicarbonamide.
Wherein, the present invention also provides the preparation methods of above-mentioned environmentally friendly material for air purification, comprising the following steps:
(1) preparation of base: will contain cerium activated alumina and crush, cross 200 meshes, then will the aluminium powder of active oxidation containing cerium obtained
It is mixed with 1.5 times of deionized water of its quality, the aluminum solutions of active oxidation containing cerium is made；
Amino modified chitosan is mixed with mahogany acid, nano titanic oxide sol is then added, is warming up to 50 DEG C and at this
At a temperature of while stirring be added the aluminum solutions of active oxidation containing cerium；It then heats to 75 DEG C and is added while stirring at such a temperature and be situated between
Hole AcF micro mist；Then 22min, ultrasonic power 1000W, then drying, calcining are ultrasonically treated to get base；
(2) preparation of slurry: methyl diphenylene diisocyanate being added in the deionized water of 5-10 times of its weight, and stirring is equal
It is even, form methyl diphenylene diisocyanate slurries；Then cocoanut active charcoal is added, is warming up to 62 DEG C, ultrasonic oscillation 2.2h；
Dimethyl fumarate is added, be warming up to 83 DEG C and polyacrylonitrile carbon fiber is added while stirring at such a temperature；Finally heat up
To 95 DEG C and modified corn starch and foaming agent is added, stirs 3.5min to get foamed slurry；
(3) preparation of superficial layer: foamed slurry is injected into foaming pipette tips, and foamed slurry is ejected into base by foaming pipette tips
On the surface of layer, to get superficial layer after natural cooling solidification.
Wherein, the condition of the calcining in the step (1) are as follows: in 500 DEG C of calcining 3.5h.
Wherein, the temperature of the foaming pipette tips in the step (3) is 48 DEG C, injection pressure 14MPa.
Embodiment 5
The environmentally friendly material for air purification of the present embodiment including porous base and is attached to the cellular surface of substrate surface
Layer, the base are made of the raw material below according to parts by weight: 34 parts of mesoporous AcF micro mist, 4 parts of mahogany acid, active oxygen containing cerium
Change 17 parts of aluminium, 10 parts of nano titanic oxide sol, 6 parts of amino modified chitosan；
The superficial layer is made of the raw material below according to parts by weight: 50 parts of methyl diphenylene diisocyanate, modified corn form sediment
17 parts of powder, 7 parts of dimethyl fumarate, 15 parts of coconut activated powdered carbon, 4.5 parts of polyacrylonitrile carbon fiber, 3.5 parts of foaming agent.
Wherein, the activated alumina containing cerium the preparation method comprises the following steps: by γ-Al2O3It is placed in beveller and grinds, and cross 80-
140 meshes, then by the γ-Al after 5 parts of sievings2O3Be impregnated in 25 parts concentration be 0.15mol/L cerous nitrate solution in, and
It is placed in 25 DEG C of constant temperature oscillators with the speed oscillation of 300r/min for 24 hours, then filters, wash, then be placed in 100 DEG C of baking oven
Dry 12h is to get activated alumina containing cerium.
Wherein, the amino modified chitosan is made by the following method: it is dense that 200ml volume is added in 4 parts of chitosan
After being completely dissolved, 150ml propyl alcohol to be added and is blended in 2% aqueous acetic acid, adjust pH value with sodium hydrate aqueous solution is degree
5, the NSC 209983 that 10ml concentration is 20mg/ml is added, adds 0.5 part of hydroboration cyanogen potassium, is stirred at room temperature for 24 hours, then
With sodium hydrate aqueous solution tune pH value to 7,200ml acetic acid precipitating, centrifugation are fallen into, sediment volumetric concentration is 85% ethanol water
Solution washing, freeze-drying obtain amino modified chitosan.
Wherein, the modified corn starch is prepared by following methods:
(1) in the water for weighing 20 parts of 5 parts of cornstarch additions, 10 parts of malic acid and 5 parts of glycerol are added, are sent into reaction kettle,
Temperature in reaction kettle is controlled at the uniform velocity to be stirred to react 28 minutes, taking-up is cooled to room temperature, and freezing equipment is re-fed into, zero at 84 DEG C
It is freezed 40 minutes under lower 15 DEG C of environment, carries out cold-resistant processing；
(2) product after freezing processing is sent into ball mill, continuously grinding 4 hours, crosses 150-250 mesh, drying moisture content is extremely
5%, obtain modified corn starch.
Wherein, the length of the polyacrylonitrile carbon fiber is 0.5-5mm, and diameter is 50-200 μm.
Wherein, the foaming agent is one of food grade ammonium chloride, edible grade saleratus, azodicarbonamide.
Wherein, the present invention also provides the preparation methods of above-mentioned environmentally friendly material for air purification, comprising the following steps:
(1) preparation of base: will contain cerium activated alumina and crush, cross 200 meshes, then will the aluminium powder of active oxidation containing cerium obtained
It is mixed with 1.5 times of deionized water of its quality, the aluminum solutions of active oxidation containing cerium is made；
Amino modified chitosan is mixed with mahogany acid, nano titanic oxide sol is then added, is warming up to 50 DEG C and at this
At a temperature of while stirring be added the aluminum solutions of active oxidation containing cerium；It then heats to 75 DEG C and is added while stirring at such a temperature and be situated between
Hole AcF micro mist；Then 22min, ultrasonic power 1000W, then drying, calcining are ultrasonically treated to get base；
(2) preparation of slurry: methyl diphenylene diisocyanate being added in the deionized water of 5-10 times of its weight, and stirring is equal
It is even, form methyl diphenylene diisocyanate slurries；Then cocoanut active charcoal is added, is warming up to 68 DEG C, ultrasonic oscillation 2.8h；
Dimethyl fumarate is added, be warming up to 88 DEG C and polyacrylonitrile carbon fiber is added while stirring at such a temperature；Finally heat up
To 95 DEG C and modified corn starch and foaming agent is added, stirs 4.5min to get foamed slurry；
(3) preparation of superficial layer: foamed slurry is injected into foaming pipette tips, and foamed slurry is ejected into base by foaming pipette tips
On the surface of layer, to get superficial layer after natural cooling solidification.
Wherein, the condition of the calcining in the step (1) are as follows: in 500 DEG C of calcining 3.5h.
Wherein, the temperature of the foaming pipette tips in the step (3) is 52 DEG C, injection pressure 15MPa.
Comparative example 1
In addition to saving superficial layer, other material contents and preparation method are consistent with embodiment 5.
Comparative example 2
In addition to saving the coconut activated powdered carbon in superficial layer, other material contents and preparation method are consistent with embodiment 5.
Comparative example 3
In addition to saving activated alumina containing cerium, the amino modified chitosan in base, other material contents and preparation method are same
Embodiment 5 is consistent.
Test example 1
The purifying property detection data of 1-5 of the embodiment of the present invention and comparative example 1-3 product is as shown in table 6.Its experimental condition
Are as follows: (1) by etc. the material for air purification of embodiment 1-5 and comparative example 1-3 of quality be put into 1m3Environmental test chamber in, to dress
The polluted gas entered in test chamber is purified, and the pollutant in air is respectively one of formaldehyde, ammonia, benzene, TVOC,
In, the initial concentration of pollutant is 80mg/L, and at 15 minutes or the concentration of use chromatographic pollutant, calculating purified
Rate；
(2) purifying rate %=[environmental test chamber initial concentration-environmental test chamber terminates concentration) ÷ environmental test chamber initial concentration]
× 100%；
Specific clean-up effect is as shown in table 1.
The purifying property detection data of 1 embodiment 1-5 of table and comparative example 1-3 product
| Sample | Purifying formaldehyde rate % | Ammonia purifying rate % | Benzene purifying rate % | TVOC purifying rate % |
| Embodiment 1 | 91.7 | 92.5 | 93.1 | 91.6 |
| Embodiment 2 | 92.6 | 91.8 | 93.5 | 92.3 |
| Embodiment 3 | 93.6 | 94.3 | 94.2 | 94.1 |
| Embodiment 4 | 90.3 | 91.8 | 92.3 | 94.1 |
| Embodiment 5 | 92.6 | 91.4 | 92.2 | 93.5 |
| Comparative example 1 | 78.2 | 79.5 | 80.9 | 81.6 |
| Comparative example 2 | 88.7 | 87.3 | 88.9 | 87.4 |
| Comparative example 3 | 83.5 | 81.8 | 83.7 | 84.2 |
As shown in Table 1, purifying property of the invention is better than comparative example, can PARA FORMALDEHYDE PRILLS(91,95), ammonia, benzene and TVOC there is fabulous purification to make
With, and purifying rate is all 90% or more, also, by comparative example 1-3 it is found that the present invention in addition superficial layer, superficial layer by being added
Activated alumina containing cerium, amino modified chitosan are added in coconut activated powdered carbon and base, air cleaning of the invention can be improved
Performance.
Test example 2
The service life of the material for air purification of the application is tested using accelerated test, experimental method: by etc. quality
The material for air purification of embodiment 1-5 and comparative example 1-3 are put into 1m3Environmental test chamber in, by persistently to reactor supplement
After so that the harmful gas concentration in reactor is maintained 30% or more, continuous purification 60 days always, it is net to take out air for pernicious gas
Agent, wherein the initial concentration of pollutant is 100mg/L, uses the concentration of chromatographic pollutant over the course of 15 mins,
Specific clean-up effect is as shown in table 2.
The purifying property detection data of 2 embodiment 1-5 of table and comparative example 1-3 product
| Sample | Purifying formaldehyde rate % | Ammonia purifying rate % | Benzene purifying rate % | TVOC purifying rate % |
| Embodiment 1 | 90.7 | 91.2 | 91.8 | 90.2 |
| Embodiment 2 | 91.5 | 90.8 | 92.2 | 91.1 |
| Embodiment 3 | 92.4 | 93.1 | 93.0 | 93.2 |
| Embodiment 4 | 88.5 | 90.3 | 91.2 | 92.8 |
| Embodiment 5 | 91.3 | 90.1 | 90.9 | 91.3 |
| Comparative example 1 | 71.0 | 72.3 | 73.5 | 71.3 |
| Comparative example 2 | 77.5 | 79.2 | 75.5 | 76.2 |
| Comparative example 3 | 72.3 | 73.6 | 75.5 | 73.2 |
From table 2 it can be seen that material for air purification of the invention (is much higher than in the high density pollution gas that concentration is 30% or more
Normal pollution condition) in after continuous purification 60 days, still maintain good purification efficiency, be held essentially constant.Therefore, using this
The air purifying preparation long service life of the material for air purification preparation of invention, has good application market.
Specific embodiments of the present invention are described above.It is to be appreciated that the invention is not limited to above-mentioned
Particular implementation, those skilled in the art can make various deformations or amendments within the scope of the claims, this not shadow
Ring substantive content of the invention.
Claims (10)
1. a kind of environmental protection material for air purification, which is characterized in that including porous base and be attached to the honeycomb of substrate surface
Superficial layer, the base is made of the raw material below according to parts by weight: 28-36 parts of mesoporous AcF micro mist, 1-5 parts of mahogany acid,
It is 11-19 parts of activated alumina containing cerium, 5-12 parts of nano titanic oxide sol, chitosan 3-7 parts amino modified；
The superficial layer is made of the raw material below according to parts by weight: 44-54 parts of methyl diphenylene diisocyanate, modified corn
14-18 parts of starch, 4-8 parts of dimethyl fumarate, powdered carbon 10-16 parts coconut activated, 3-5 parts of polyacrylonitrile carbon fiber, foaming agent
2-4 parts.
2. environmental protection material for air purification according to claim 1, which is characterized in that the base is by below according to parts by weight
Raw material composition: 32 parts of mesoporous AcF micro mist, 3 parts of mahogany acid, 15 parts of activated alumina containing cerium, nano titanic oxide sol 8.5
Part, 5 parts of amino modified chitosan；
The superficial layer is made of the raw material below according to parts by weight: 49 parts of methyl diphenylene diisocyanate, modified corn form sediment
16 parts of powder, 6 parts of dimethyl fumarate, 13 parts of coconut activated powdered carbon, 4 parts of polyacrylonitrile carbon fiber, 3 parts of foaming agent.
3. environmental protection material for air purification according to claim 1, which is characterized in that the preparation of the activated alumina containing cerium
Method are as follows: by γ-Al2O3It is placed in beveller and grinds, and cross 80-140 mesh, then by the γ-Al after 5 parts of sievings2O3Dipping
In the cerous nitrate solution that 25 parts of concentration are 0.15mol/L, it is placed in 25 DEG C of constant temperature oscillators with the revolving speed of 300r/min
Oscillation for 24 hours, then filters, and washs, then is placed in 100 DEG C of baking oven dry 12h to get activated alumina containing cerium.
4. it is according to claim 1 environmental protection material for air purification, which is characterized in that the amino modified chitosan by with
Lower section method is made: 4 parts of chitosan being added in the aqueous acetic acid that 200ml volumetric concentration is 2%, after being completely dissolved, is added
150ml propyl alcohol is blended, and adjusting pH value with sodium hydrate aqueous solution is 5, and the NSC 209983 that 10ml concentration is 20mg/ml is added,
0.5 part of hydroboration cyanogen potassium is added, is stirred at room temperature for 24 hours, then with sodium hydrate aqueous solution tune pH value to 7, falls into 200ml vinegar
Acid precipitating, centrifugation, sediment are that 85% ethanol water washs with volumetric concentration, are freeze-dried, obtain amino modified chitosan.
5. environmental protection material for air purification according to claim 1, which is characterized in that the modified corn starch is by with lower section
Method is prepared:
(1) in the water for weighing 20 parts of 5 parts of cornstarch additions, 10 parts of malic acid and 5 parts of glycerol are added, are sent into reaction kettle,
Temperature in reaction kettle is controlled at the uniform velocity to be stirred to react 20-30 minutes, taking-up is cooled to room temperature, and is re-fed into freezing and is set at 80-85 DEG C
It is standby, it is freezed 40 minutes under subzero 15 DEG C of environment, carries out cold-resistant processing；
(2) product after freezing processing is sent into ball mill, continuously grinding 4 hours, crosses 150-250 mesh, drying moisture content is extremely
5%, obtain modified corn starch.
6. environmental protection material for air purification according to claim 1, which is characterized in that the length of the polyacrylonitrile carbon fiber
For 0.5-5mm, diameter is 50-200 μm.
7. environmental protection material for air purification according to claim 1, which is characterized in that the foaming agent is food grade chlorination
One of ammonium, edible grade saleratus, azodicarbonamide.
8. it is according to claim 1-7 environmental protection material for air purification preparation method, which is characterized in that including with
Lower step:
(1) preparation of base: will contain cerium activated alumina and crush, cross 200 meshes, then will the aluminium powder of active oxidation containing cerium obtained
It is mixed with 1.5 times of deionized water of its quality, the aluminum solutions of active oxidation containing cerium is made；
Amino modified chitosan is mixed with mahogany acid, nano titanic oxide sol is then added, is warming up to 50 DEG C and at this
At a temperature of while stirring be added the aluminum solutions of active oxidation containing cerium；It then heats to 75 DEG C and is added while stirring at such a temperature and be situated between
Hole AcF micro mist；Then 22min, ultrasonic power 1000W, then drying, calcining are ultrasonically treated to get base；
The preparation of slurry: methyl diphenylene diisocyanate being added in the deionized water of 5-10 times of its weight, stirred evenly,
Form methyl diphenylene diisocyanate slurries；Then cocoanut active charcoal is added, is warming up to 60-70 DEG C, ultrasonic oscillation 2-3h；
Dimethyl fumarate is added, be warming up to 80-90 DEG C and polyacrylonitrile carbon fiber is added while stirring at such a temperature；Finally rise
Temperature is to 95 DEG C and modified corn starch and foaming agent is added, and stirs 3-5min to get foamed slurry；
The preparation of superficial layer: foamed slurry is injected into foaming pipette tips, and foamed slurry is ejected into base by foaming pipette tips
Surface on, natural cooling solidification after to get superficial layer.
9. the preparation method of environmental protection material for air purification according to claim 8, which is characterized in that in the step (1)
Calcining condition are as follows: in 500 DEG C of calcining 3.5h.
10. the preparation method of environmental protection material for air purification according to claim 8, which is characterized in that in the step (3)
Foaming pipette tips temperature be 45-55 DEG C, injection pressure 13-16MPa.
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| CN116726654A (en) * | 2023-08-14 | 2023-09-12 | 烟台通一环保科技有限公司 | Preparation method of active carbon fiber-nano titanium dioxide air purifying net |
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Application publication date: 20190111 |