CN106013640B - A kind of air purification wall cloth - Google Patents

A kind of air purification wall cloth Download PDF

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CN106013640B
CN106013640B CN201610368169.1A CN201610368169A CN106013640B CN 106013640 B CN106013640 B CN 106013640B CN 201610368169 A CN201610368169 A CN 201610368169A CN 106013640 B CN106013640 B CN 106013640B
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air purification
mixed liquor
mass ratio
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CN106013640A (en
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不公告发明人
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Shaoxing Yi Han Textile Co., Ltd.
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Shaoxing Yi Han Textile Co Ltd
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F13/00—Coverings or linings, e.g. for walls or ceilings
    • E04F13/002—Coverings or linings, e.g. for walls or ceilings made of webs, e.g. of fabrics, or wallpaper, used as coverings or linings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • 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
    • B01D53/02—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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/04—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of alkali metals, alkaline earth metals or magnesium
    • B01J20/041—Oxides or hydroxides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/06—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
    • B01J20/12—Naturally occurring clays or bleaching earth
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
    • B01J21/06—Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
    • B01J21/063—Titanium; Oxides or hydroxides thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
    • B01J23/48—Silver or gold
    • B01J23/50—Silver
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00—Catalysts, in general, characterised by their form or physical properties
    • B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
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    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
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    • B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
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    • B01D2257/7027—Aromatic hydrocarbons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
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    • B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
    • B01D2257/708—Volatile organic compounds V.O.C.'s
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F2290/00—Specially adapted covering, lining or flooring elements not otherwise provided for
    • E04F2290/04—Specially adapted covering, lining or flooring elements not otherwise provided for for insulation or surface protection, e.g. against noise, impact or fire
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F2290/00—Specially adapted covering, lining or flooring elements not otherwise provided for
    • E04F2290/04—Specially adapted covering, lining or flooring elements not otherwise provided for for insulation or surface protection, e.g. against noise, impact or fire
    • E04F2290/041—Specially adapted covering, lining or flooring elements not otherwise provided for for insulation or surface protection, e.g. against noise, impact or fire against noise

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  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Disinfection, Sterilisation Or Deodorisation Of Air (AREA)

Abstract

The present invention provides a kind of air purification wall cloths, are related to decoration material field, including non-woven substrate, printing layer and air purification layer；Air purification layer is formed by air cleaning slurry curing, air cleaning slurry preparation method are as follows: formaldehyde, benzenediol, nanometer galapectite pipe, brucite fiber, hydroxypropyl methyl cellulose and water are mixed to get mixed liquor A, sodium hydroxide solution is added drop-wise to mixed liquor A and obtains Sol A；Butyl titanate, dehydrated alcohol are mixed to get mixed liquid B；Hydrochloric acid solution, dehydrated alcohol and water are mixed to get mixed liquor C；Mixed liquor C is added drop-wise to mixed liquid B and obtains sol B；Sol A and sol B are mixed to get mixed sols, obtain mixed gel after ageing, solvent displacement；Mixed gel is dried；Mixed gel is carbonized, aerogel particles are made；Air cleaning slurry preparation.The present invention to noxious substance and can degrade, and persistence is good.Air purification layer is light, and coated weight is few, and thickness is small.

Description

A kind of air purification wall cloth
Technical field
The present invention relates to decoration material fields, particularly, are related to a kind of air purification wall cloth.
Background technique
Nowadays, environmental problem increasingly causes the worry of people, especially newly in the room air after finishing, containing a large amount of The pernicious gases such as formaldehyde, benzene homologues.In recent years about room air and leukaemia after new finishing disease incidence relationship report Also media are more common in road.Therefore the quality of room air is an important factor for influencing human health.
The air purification method used both at home and abroad mainly has air suction method, covering method, oxidizing process etc..Using suction method, Heavy mechanical equipment is needed, is difficult to carry out in environment such as room, compartment, lavatories；Covering method is different to spray aromatic substance cover Taste, but injury of the smell substance to human body cannot be eliminated；Oxidizing process is to generate negative oxygen ion using electrolysis principle to carry out air Sterilizing and purifying, but the effect is unsatisfactory, and price is higher.
Air purifying preparation refers to using absorption, decomposition principle possessed by natural material itself, by modern science and technology Processing is formed by with the product eliminated pernicious gas in air, dispel various odor functions.Air purifying preparation in recent years Type emerges one after another, and wherein active carbon is most widely used.But air purifying preparation needs to be placed in indoor each corner, Beauty is not only influenced, but also is easy to forget.And the price of all kinds of air purifying preparations is also higher.
Therefore, occur some wallpaper/wall papers with air-cleaning function currently on the market.
Application No. is 201410087422.7 Chinese patents to disclose a kind of wallpaper with sepiolite layer, it includes wall Paper substrate is coated with sepiolite layer on the surface of wall paper base, and sepiolite layer passes through adhesive layer and wall paper base adhesive.The invention Can effectively pernicious gases such as formaldehyde adsorption, benzene, to purify living environment.
Application No. is the Chinese patents of CN201510779819.7 to disclose a kind of New deodouring wallpaper, including bottom, function Ergosphere and surface layer, the functional layer by cotton fiber as major ingredient, and added with active powdered carbon, active powdered carbon in the functional layer Weight percent is 5~15%.The New deodouring wall paper is environmentally protective in addition to decorative effect, is added with active powdered carbon, Using the physisorption of active carbon, effectively mitigate the stink that indoor environment generates, such as the gas in kitchen, toilet region Taste plays the effect to purify the air of a room.
The main function ingredient of the above-mentioned wallpaper with air-cleaning function is sepiolite or active carbon, sepiolite and activity Charcoal porosity with higher has preferable suction-operated.But at present using sepiolite or active carbon as main function at There is also many disadvantages for the wall paper divided: the adsorption capacity of 1. sepiolites and active carbon is not ideal enough, generally using half a year to 1 year Afterwards, adsorption effect will be greatly reduced；2. since there is preferable hygroscopicity to inhale when in use for sepiolite and active carbon While attached pernicious gas, a large amount of moisture can be also adsorbed, its originally limited adsorption capacity is caused to be occupied；3. sepiolite and It can not effectively be decomposed after activated carbon adsorption pernicious gas, after the adsorption capacity of sepiolite and active carbon is occupied full, very Difficulty excludes the pernicious gas adsorbed.And after the above-mentioned coating with air-cleaning function is coated in wall paper base, Since thickness is thicker, heavier-weight, and quality is harder, has seriously affected the flexibility of wallpaper.
Summary of the invention
In order to solve the above-mentioned technical problems, the present invention provides a kind of air purification wall cloths.Air cleaning wall of the invention Cloth has air purification layer, and hole is easily molded in the drying process for the air cleaning layer material, porosity and ratio with superelevation Surface area, adsorption capacity are high, and to the strong adsorption of the harmful substance in air, adsorption effect persistence is good, and can be to having Evil gas is degraded.Meanwhile air cleaning layer material is light, coated weight is few, and thickness is small, soft to the weight and wall paper of wall paper Pliable influence is small.
The specific technical proposal of the invention is:
A kind of air purification wall cloth, including non-woven substrate, printing layer and the air purification layer successively bonded.Wherein, institute Stating printing layer is conventional oil layer of ink or other resin layers；The air purification layer is formed by air cleaning slurry curing, described Air cleaning slurry the preparation method is as follows:
Step 1: formaldehyde, benzenediol, nanometer galapectite pipe, brucite fiber, hydroxypropyl methyl cellulose and water are pressed into matter Amount is mixed than 1-2:3:0.1-0.3:0.05-0.15:0.05-0.15:100, mixed liquor A is obtained after mixing evenly, in stirring bar The sodium hydroxide solution that concentration is 0.021mol/L is added drop-wise in mixed liquor A until the pH value of mixed liquor A is 7-8 under part；So 16-48h is reacted at 50-60 DEG C afterwards, obtains Sol A.
Step 2: butyl titanate, dehydrated alcohol 1:30-50 in mass ratio being mixed, mixed liquid B is obtained；By the salt of 3mol/L Acid solution, dehydrated alcohol and water is by volume: 3-5:5-15:5 is mixed, and mixed liquor C is obtained；It under agitation will mixing Liquid C is added drop-wise in isometric mixed liquid B；Then 8-16h is reacted at 50-60 DEG C, obtains sol B.
Step 3: Sol A being uniformly mixed with sol B 3-5:1 in mass ratio, mixed sols is obtained, mixed sols is aged After 36-72h, solvent displacement 24-48h is carried out to mixed sols with excessive organic solvent A, then with excessive organic solvent B Solvent displacement 12-36h is carried out to mixed sols, organic solvent B is then removed, obtains mixed gel.
Step 4: mixed gel being dried using supercritical fluid.
Step 5: the mixed gel after drying is carbonized, carbide is obtained, after carbide is washed away impurity and is dried, It is crushed, the aerogel particles of micron level is made；
Step 6: aerogel particles, soybean base adhesive are mixed with water 10-30:1-2:100 in mass ratio and be uniformly dispersed Air cleaning slurry is made afterwards.
In the inventive solutions, the material of air purification layer has abandoned active carbon as main component, is changed to adopt It is the composite aerogel of main base to charcoal-aero gel.Compared with active carbon, aeroge possesses higher porosity, specific surface Long-pending and adsorption capacity, thus it is stronger for the adsorptivity of harmful substance in air.But traditional aeroge, in gel through overdrying It is dry prepare aeroge during, since the intensity of its internal three-dimensional net structure is not high, original structure is easy to collapse, and leads Voidage and specific surface area is caused to reduce, and material fragility is higher after molding, intensity, toughness is poor, has seriously affected practical application.
Aerogel material of the invention is with charcoal-nanometer galapectite pipe-brucite fiber-titanium dioxide composite material Matrix, wherein nanometer galapectite pipe is the staple fiber tubulose with hollow structure, and compound gas is made in the duct with nano-scale The intensity of material can be greatly improved after gel, brucite fiber can be improved the toughness of aerogel material, due to nanometer angstrom Lip river The presence of madreporic canal and brucite fiber can play a supporting role in aerogel material drying process, the three-dimensional in aeroge Network structure is not easy to collapse, thus pore structure and specific surface area when keeping collosol state.Also, due to nanometer galapectite It manages itself and also possesses nano pore, it may have strong adsorptivity, therefore can make up for it and occupied by nanometer galapectite pipe, brucite fiber The hole that is lost of space.Porosity is high when titanium dioxide is as aeroge, and large specific surface area makes as material for air purification With can effectively be degraded under photocatalysis to the formaldehyde of absorption, benzene compounds, therefore when air of the invention is net The absorption of harmful substance can be carried out on one side by changing layer, can be carried out under light illumination photocatalysis on one side and be dropped to harmful substance Solution, being capable of permanence use.
Hydroxypropyl methyl cellulose has outstanding viscosity, the combination of each substance can be assisted when preparing colloidal sol, simultaneously It can be used as pore-foaming agent, it is degraded in high temperature drying, carbonization process, liberates itself and is taken up space, and increase hole Rate.
It is environmentally protective using the soybean base adhesive for being free of formaldehyde when preparing air cleaning slurry.
As a preferred solution of the present invention, the coating weight of aerogel particles is 0.05- after the air cleaning slurry coating 4g/m2.The coated weight of air cleaning slurry is few in the present invention, and thickness is thin, light, influences on the weight of wall paper, flexibility small.
As a preferred solution of the present invention, sol B made from step 2 is before step 3 also through overload silver processing: by sol B The concentration for being impregnated in 10-15 times of volume is in the silver nitrate solution of 0.25mol/L and to stir evenly, and is protected from light and adds at 50-60 DEG C Hot 2-3h takes out sol B, sol B is impregnated in the citric acid three sodium solution of 10-15 times of 0.5mol/L, anti-at 80-90 DEG C Answer 3-4h；After finally sol B is taken out and is eluted with water, the sol B for carrying silver is obtained.After silver is carried on sol B, it can cooperate Titanium dioxide carries out photocatalytic degradation harmful substance.And above-mentioned load silver method is high to the conjugation of silver, it will not be in subsequent process In cause silver be largely lost.
As a preferred solution of the present invention, the rate of addition of sodium hydroxide solution described in step 1 is 15-25mL/min. The rate of addition of mixed liquor C described in step 2 is 15-20mL/min.
As a preferred solution of the present invention, the nanometer galapectite pipe is by being activated: by nanometer galapectite pipe at it 4-6h is impregnated in the 4wt% hydrochloric acid solution of 400-600 times of quality, the nanometer galapectite pipe activated.To nanometer galapectite pipe Acid activation processing is carried out, the adsorption efficiency of its own is can be improved, can be improved the adsorption efficiency of air purification layer.
As a preferred solution of the present invention, the step 3 midway organic solvent A is dehydrated alcohol, and the organic solvent B is N-hexane.
As a preferred solution of the present invention, step 4 condition are as follows: using carbon dioxide as dried medium, temperature 40-50 DEG C, pressure 5-15MPa, time 6-24h.Mixed sols is dried using supercritical fluid, can largely be retained Cellular structure inside mixed sols.
As a preferred solution of the present invention, the carbonization process of step 5 specifically: by mixed gel, the hydroxide after drying Sodium 1:1-2 in mass ratio is mixed and is put in microwave device, and the first carbonization stage is first carried out under atmosphere of inert gases, and temperature is 250-350 DEG C, heating rate 20 DEG C/min, time 1-2h, microwave power 600-800W, microwave frequency 2450MHz；Then it carries out Second carbonization stage, temperature are 500-700 DEG C, heating rate 15 DEG C/min, time 2-4h, microwave power 1000-1200W, micro- Wave frequency rate 2450MHz.
The present invention selects microwave radiation heating to carry out multiple step format charing to mixed gel, and microwave radiation heating is by being added The high-frequency reciprocating movement of hot portion's dipole molecule in vivo, makes intermolecular mutual collision generate a large amount of frictional heats, then makes in substance External Quick uniform heating simultaneously.Carbonization process is divided into the first carbonization stage, the second carbonization stage, in the first carbonization stage In, the low boiling point organic compound of mixed gel is decomposed into charcoal and gas under anoxybiotic high temperature.In temperature-rise period, mixed gel Part carbon source material reach glass transition temperature after, rigidity reduces, and flexible reinforced, activating agent sodium hydroxide reacts with C Carbon dioxide is generated, since the flexibility of Carbon Materials at this time is stronger, plasticity is higher, and gas can generate big in the base when generating Metering-orifice gap, keeps certain time at this temperature, is conducive to the specific surface area increased.In the second carbonization stage, mixed gel Part carbon source material continue heating after rigidly become strong, the structure of matrix has finalized the design almost at this time, due to rigidity reinforced, big hole Gap can not generate.It is lesser micro- can to generate size in volatilization process on matrix for the fraction substance of arrival boiling point at this time Hole.
As a preferred solution of the present invention, the resulting carbide of step 5 also passes through hydrophobically modified after washing away impurity: by six Methyl disilazane is that 3-5:10 is mixed with n-hexane by volume, obtains mixed liquor D, and mixed liquor D is pressed quality in carbide It is mixed than 20:1-3, modified 12-36h, finally takes out carbide at 50-70 DEG C.
Traditional air purification wall cloth causes it to drop the adsorption capacity of harmful substance due to that can absorb large quantity of moisture simultaneously It is low.The present invention is carrying out hydrophobically modified after charing to mixed gel to reduce its adsorptivity to moisture, avoids inner space It is occupied by moisture.The reason of present invention carries out hydrophobically modified after mixed gel charing is, if carrying out hydrophobic change before charing Property, the hydrophobic grouping being grafted in carbonization process to it is easy degradation, to lose hydrophobicity.
It is compared with the prior art, the beneficial effects of the present invention are: air purification wall cloth of the invention, has air cleaning Layer, hole is easily molded in the drying process for the air cleaning layer material, porosity and specific surface area with superelevation, adsorption capacity Height, to the strong adsorption of the harmful substance in air, adsorption effect persistence is good, and can degrade to pernicious gas. Meanwhile air cleaning layer material is light, coated weight is few, and thickness is small, influences on the weight of wall paper and wall paper flexibility small.This Outside, air purification layer can also play absorbing sound and lowering noise and heat-insulated effect due to the porosity and pore capacities of superelevation in the present invention.
Other than objects, features and advantages described above, there are also other objects, features and advantages by the present invention. The present invention is further detailed explanation below.
Specific embodiment
The embodiment of the present invention is described in detail below, but the present invention can be limited and be covered according to claim Multitude of different ways implement.And raw materials used in following embodiment, equipment is unless otherwise noted the normal of this field With raw material, equipment；Method therefor in following embodiment is unless otherwise noted the conventional method of this field.
Embodiment 1
A kind of air purification wall cloth, non-woven substrate, printing layer and air purification layer including successively bonding are wherein described Air purification layer is formed by air cleaning slurry curing, the air cleaning slurry the preparation method is as follows:
Step 1: formaldehyde, benzenediol, nanometer galapectite pipe, brucite fiber, hydroxypropyl methyl cellulose and water are pressed into matter Amount is mixed than 2:3:0.3:0.15:0.15:100, is obtained mixed liquor A after mixing evenly, is by concentration under agitation The sodium hydroxide solution of 0.021mol/L is added drop-wise in mixed liquor A the pH value until mixed liquor A with the rate of addition of 25mL/min For 7-8；Then 16h is reacted at 60 DEG C, obtains Sol A.
Wherein the nanometer galapectite pipe is by being activated: by nanometer galapectite pipe its 600 times of quality 4wt% salt 6h is impregnated in acid solution, the nanometer galapectite pipe activated.
Step 2: butyl titanate, dehydrated alcohol 1:50 in mass ratio being mixed, mixed liquid B is obtained；By the hydrochloric acid of 3mol/L 5:15:5 is mixed by volume for solution, dehydrated alcohol and water, obtains mixed liquor C；Under agitation by mixed liquor C with The rate of addition of 20mL/min is added drop-wise in isometric mixed liquid B；Then 8h is reacted at 60 DEG C, obtains sol B.
It is in the silver nitrate solution of 0.25mol/L and to stir evenly by the concentration that sol B is impregnated in 15 times of volumes, at 60 DEG C Under be protected from light heating 2h, take out sol B, sol B be impregnated in the citric acid three sodium solution of 15 times of 0.5mol/L, it is anti-at 90 DEG C Answer 3h；After finally sol B is taken out and is eluted with water, the sol B for carrying silver is obtained.
Step 3: Sol A being uniformly mixed with sol B 5:1 in mass ratio, mixed sols is obtained, mixed sols is aged After 72h, solvent displacement 48h is carried out to mixed sols with excessive dehydrated alcohol A, then with excessive n-hexane to mixed sols Solvent displacement 36h is carried out, n-hexane is then removed, obtains mixed gel；
Step 4: mixed gel being dried using supercritical fluid, actual conditions are as follows: using carbon dioxide as dry Dry medium, temperature 50 C, pressure 15MPa, time 6h.
Step 5: mixed gel, the sodium hydroxide 1:2 in mass ratio after drying being mixed and are put in microwave device, lazy Property atmosphere under first carry out the first carbonization stage, temperature is 350 DEG C, 20 DEG C/min of heating rate, time 1h, microwave power 800W, microwave frequency 2450MHz；Then the second carbonization stage is carried out, temperature is 700 DEG C, 15 DEG C/min of heating rate, the time 2h, microwave power 1200W, microwave frequency 2450MHz.
Carbide is obtained, is by volume 5:10 by hexamethyldisilazane and n-hexane after carbide is washed away impurity Mixing, obtains mixed liquor D, mixed liquor D is mixed in carbide 20:3 in mass ratio, and modified 12h, finally takes at 70 DEG C Carbide out is crushed after dry, the aerogel particles of micron level is made.
Step 6: aerogel particles, soybean base adhesive being mixed with water 30:2:100 in mass ratio and are made after being uniformly dispersed Air cleaning slurry.
When coating, the coating weight of aerogel particles is 4g/m after the air cleaning slurry coating2。
The specific surface area of aerogel particles made from the present embodiment is 983m2/ g, porosity 93%, pore capacities are 2.62cm3/ g, density 2.97kg/m3。
Embodiment 2
A kind of air purification wall cloth, including non-woven substrate, printing layer and the air purification layer successively bonded；It is wherein described Air purification layer is formed by air cleaning slurry curing, the air cleaning slurry the preparation method is as follows:
Step 1: formaldehyde, benzenediol, nanometer galapectite pipe, brucite fiber, hydroxypropyl methyl cellulose and water are pressed into matter Amount is mixed than 1:3:0.1:0.05:0.05:100, is obtained mixed liquor A after mixing evenly, is by concentration under agitation The sodium hydroxide solution of 0.021mol/L is added drop-wise in mixed liquor A the pH value until mixed liquor A with the rate of addition of 15mL/min For 7-8；Then 48h is reacted at 50 DEG C, obtains Sol A.
Wherein the nanometer galapectite pipe is by being activated: by nanometer galapectite pipe its 400 times of quality 4wt% salt 4h is impregnated in acid solution, the nanometer galapectite pipe activated.
Step 2: butyl titanate, dehydrated alcohol 1:30 in mass ratio being mixed, mixed liquid B is obtained；By the hydrochloric acid of 3mol/L 3:5:5 is mixed by volume for solution, dehydrated alcohol and water, obtains mixed liquor C；Under agitation by mixed liquor C with The rate of addition of 15mL/min is added drop-wise in isometric mixed liquid B；Then 16h is reacted at 50 DEG C, obtains sol B.
It is in the silver nitrate solution of 0.25mol/L and to stir evenly by the concentration that sol B is impregnated in 10 times of volumes, at 50 DEG C Under be protected from light heating 3h, take out sol B, sol B be impregnated in the citric acid three sodium solution of 10 times of 0.5mol/L, it is anti-at 80 DEG C Answer 4h；After finally sol B is taken out and is eluted with water, the sol B for carrying silver is obtained.
Step 3: Sol A being uniformly mixed with sol B 3:1 in mass ratio, mixed sols is obtained, mixed sols is aged After 36h, solvent displacement is carried out for 24 hours to mixed sols with excessive dehydrated alcohol A, then with excessive n-hexane to mixed sols Solvent displacement 12h is carried out, n-hexane is then removed, obtains mixed gel.
Step 4: mixed gel being dried using supercritical fluid, actual conditions are as follows: using carbon dioxide as dry Dry medium, 40 DEG C of temperature, pressure 5MPa, the time is for 24 hours.
Step 5: mixed gel, the sodium hydroxide 1:1 in mass ratio after drying being mixed and are put in microwave device, lazy Property atmosphere under first carry out the first carbonization stage, temperature is 250 DEG C, 20 DEG C/min of heating rate, time 2h, microwave power 600W, microwave frequency 2450MHz；Then the second carbonization stage is carried out, temperature is 500 DEG C, 15 DEG C/min of heating rate, the time 4h, microwave power 1000W, microwave frequency 2450MHz.
Carbide is obtained, is by volume 5:10 by hexamethyldisilazane and n-hexane after carbide is washed away impurity Mixing, obtains mixed liquor D, mixed liquor D is mixed in carbide 20:3 in mass ratio, and modified 12h, finally takes at 70 DEG C Carbide out is crushed after dry, the aerogel particles of micron level is made.
Step 6: aerogel particles, soybean base adhesive being mixed with water 10:1:100 in mass ratio and are made after being uniformly dispersed Air cleaning slurry.
When coating, the coating weight of aerogel particles is 0.05g/m after the air cleaning slurry coating2。
The specific surface area of aerogel particles made from the present embodiment is 921m2/ g, porosity 91%, pore capacities are 2.38cm3/ g, density 3.14kg/m3。
Embodiment 3
A kind of air purification wall cloth, including non-woven substrate, printing layer and the air purification layer successively bonded；It is wherein described Air purification layer is formed by air cleaning slurry curing, the air cleaning slurry the preparation method is as follows:
Step 1: formaldehyde, benzenediol, nanometer galapectite pipe, brucite fiber, hydroxypropyl methyl cellulose and water are pressed into matter Amount is mixed than 1.5:3:0.2:0.1:0.1:100, is obtained mixed liquor A after mixing evenly, is by concentration under agitation The sodium hydroxide solution of 0.021mol/L is added drop-wise in mixed liquor A the pH value until mixed liquor A with the rate of addition of 20mL/min For 7-8；Then 32h is reacted at 55 DEG C, obtains Sol A.
Wherein the nanometer galapectite pipe is by being activated: by nanometer galapectite pipe its 500 times of quality 4wt% salt 5h is impregnated in acid solution, the nanometer galapectite pipe activated.
Step 2: butyl titanate, dehydrated alcohol 1:40 in mass ratio being mixed, mixed liquid B is obtained；By the hydrochloric acid of 3mol/L 4:10:5 is mixed by volume for solution, dehydrated alcohol and water, obtains mixed liquor C；Under agitation by mixed liquor C with The rate of addition of 17.5mL/min is added drop-wise in isometric mixed liquid B；Then 12h is reacted at 55 DEG C, obtains sol B.
It is in the silver nitrate solution of 0.25mol/L and to stir evenly by the concentration that sol B is impregnated in 12.5 times of volumes, 55 It is protected from light heating 2.5h at DEG C, takes out sol B, sol B is impregnated in the citric acid three sodium solution of 12.5 times of 0.5mol/L, 85 3.5h is reacted at DEG C；After finally sol B is taken out and is eluted with water, the sol B for carrying silver is obtained.
Step 3: Sol A being uniformly mixed with sol B 4:1 in mass ratio, mixed sols is obtained, mixed sols is aged After 54h, solvent displacement 36h is carried out to mixed sols with excessive dehydrated alcohol A, then with excessive n-hexane to mixed sols It carries out solvent displacement for 24 hours, then removes n-hexane, obtain mixed gel
Step 4: mixed gel being dried using supercritical fluid, actual conditions are as follows: using carbon dioxide as dry Dry medium, temperature 45 C, pressure 10MPa, time 15h.
Step 5: mixed gel, the sodium hydroxide 1:1.5 in mass ratio after drying are mixed and are put in microwave device, First carry out the first carbonization stage under atmosphere of inert gases, temperature is 300 DEG C, heating rate 20 DEG C/min, time 1.5h, microwave function Rate 700W, microwave frequency 2450MHz；Then the second carbonization stage is carried out, temperature is 600 DEG C, 15 DEG C/min of heating rate, the time 3h, microwave power 1100W, microwave frequency 2450MHz.
Carbide is obtained, is by volume 5:10 by hexamethyldisilazane and n-hexane after carbide is washed away impurity Mixing, obtains mixed liquor D, mixed liquor D is mixed in carbide 20:3 in mass ratio, and modified 12h, finally takes at 70 DEG C Carbide out is crushed after dry, the aerogel particles of micron level is made.
Step 6: aerogel particles, soybean base adhesive being mixed with water 20:1.5:100 in mass ratio and made after being uniformly dispersed Obtain air cleaning slurry.
When coating, the coating weight of aerogel particles is 2g/m after the air cleaning slurry coating2。
The specific surface area of aerogel particles made from the present embodiment is 1046m2/ g, porosity 96%, pore capacities are 2.78cm3/ g, density 2.90kg/m3。
Embodiment 4
The present embodiment and embodiment 3 the difference is that:
In step 1, formaldehyde, benzenediol, nanometer galapectite pipe, brucite fiber, hydroxypropyl methyl cellulose and water quality Than for 1.75:3:0.15:0.1:0.1:100.
In step 2, butyl titanate, dehydrated alcohol mass ratio are 1:35；Hydrochloric acid solution, dehydrated alcohol and water are by volume 3.5:7:5。
In step 3, Sol A and sol B mass ratio are 3.5:1.
The specific surface area of aerogel particles made from the present embodiment is 989m2/ g, porosity 93%, pore capacities are 2.64cm3/ g, density 2.96kg/m3。
Embodiment 5
The present embodiment and embodiment 3 the difference is that:
In step 1, formaldehyde, benzenediol, nanometer galapectite pipe, brucite fiber, hydroxypropyl methyl cellulose and water quality Than for 1:3:0.15:0.1:0.1:100.
In step 2, butyl titanate, dehydrated alcohol mass ratio are 1:38；Hydrochloric acid solution, dehydrated alcohol and water are by volume 3.5:7:5。
In step 3, Sol A and sol B mass ratio are 3.5:1.
The specific surface area of aerogel particles made from the present embodiment is 921m2/ g, porosity 91%, pore capacities are 2.41cm3/ g, density 3.11kg/m3。
Embodiment 6
The present embodiment and embodiment 3 the difference is that:
In step 1, formaldehyde, benzenediol, nanometer galapectite pipe, brucite fiber, hydroxypropyl methyl cellulose and water quality Than for 1.75:3:0.25:0.1:0.1:100.
In step 2, butyl titanate, dehydrated alcohol mass ratio are 1:35；Hydrochloric acid solution, dehydrated alcohol and water are by volume 4.5:12:5。
In step 3, Sol A and sol B mass ratio are 4.5:1.
The specific surface area of aerogel particles made from the present embodiment is 991m2/ g, porosity 93, pore capacities are 2.70cm3/ g, density 2.95kg/m3。
Embodiment 7
The present embodiment and embodiment 3 the difference is that:
In step 1, formaldehyde, benzenediol, nanometer galapectite pipe, brucite fiber, hydroxypropyl methyl cellulose and water quality Than for 1.75:3:0.15:0.15:0.15:100.
In step 2, butyl titanate, dehydrated alcohol mass ratio are 1:35；Hydrochloric acid solution, dehydrated alcohol and water are by volume 3.5:9:5。
In step 3, Sol A and sol B mass ratio are 4:1.
The specific surface area of aerogel particles made from the present embodiment is 995m2/ g, porosity 93%, pore capacities are 2.71cm3/ g, density 2.96kg/m3。
Embodiment 8
The present embodiment and embodiment 3 the difference is that:
In step 1, formaldehyde, benzenediol, nanometer galapectite pipe, brucite fiber, hydroxypropyl methyl cellulose and water quality Than for 1.75:3:0.1:0.1:0.1:100.
In step 2, butyl titanate, dehydrated alcohol mass ratio are 1:35；Hydrochloric acid solution, dehydrated alcohol and water are by volume 3.5:8:5。
In step 3, Sol A and sol B mass ratio are 4:1.
The specific surface area of aerogel particles made from the present embodiment is 999m2/ g, porosity 94%, pore capacities are 2.74cm3/ g, density 2.99kg/m3。
Embodiment 9
The present embodiment and embodiment 3 the difference is that:
In step 1, formaldehyde, benzenediol, nanometer galapectite pipe, brucite fiber, hydroxypropyl methyl cellulose and water quality Than for 1.75:3:0.2:0.1:0.15:100.
In step 2, butyl titanate, dehydrated alcohol mass ratio are 1:35；Hydrochloric acid solution, dehydrated alcohol and water are by volume 3.5:14:5。
In step 3, Sol A and sol B mass ratio are 4:1.
The specific surface area of aerogel particles made from the present embodiment is 1013m2/ g, porosity 95%, pore capacities are 2.71cm3/ g, density 2.92kg/m3。
Embodiment 10
The present embodiment and embodiment 3 the difference is that:
In step 1, formaldehyde, benzenediol, nanometer galapectite pipe, brucite fiber, hydroxypropyl methyl cellulose and water quality Than for 2:3:0.3:0.15:0.1:100.
In step 2, butyl titanate, dehydrated alcohol mass ratio are 1:35；Hydrochloric acid solution, dehydrated alcohol and water are by volume 3.5:6:5。
In step 3, Sol A and sol B mass ratio are 5:1.
The specific surface area of aerogel particles made from the present embodiment is 984m2/ g, porosity 93%, pore capacities are 2.62cm3/ g, density 2.98kg/m3。
Comparative example 1
The present embodiment and embodiment 3 the difference is that:
In step 1, formaldehyde, benzenediol, nanometer galapectite pipe, brucite fiber, hydroxypropyl methyl cellulose and water quality Than for 0.75:3:0.05:0.02:0.02:100.The rate of addition of sodium hydroxide solution is 10mL/min.
In step 2, butyl titanate, dehydrated alcohol mass ratio are 1:25；Hydrochloric acid solution, dehydrated alcohol and water are by volume 2:3:5.The rate of addition of mixed liquor C is 10mL/min.
In step 3, Sol A and sol B mass ratio are 2:1.
The specific surface area of aerogel particles made from the present embodiment is 694m2/ g, porosity 87%, pore capacities are 2.22cm3/ g, density 3.50kg/m3。
Comparative example 2
The present embodiment and embodiment 3 the difference is that:
In step 1, formaldehyde, benzenediol, nanometer galapectite pipe, brucite fiber, hydroxypropyl methyl cellulose and water quality Than for 2.25:3:0.4:0.2:0.2:100.The rate of addition of sodium hydroxide solution is 30mL/min.
In step 2, butyl titanate, dehydrated alcohol mass ratio are 1:60；Hydrochloric acid solution, dehydrated alcohol and water are by volume 6:20:5.The rate of addition of mixed liquor C is 25mL/min.
In step 3, Sol A and sol B mass ratio are 6:1.
The specific surface area of aerogel particles made from the present embodiment is 834m2/ g, porosity 92%, pore capacities are 2.05cm3/ g, density 3.37kg/m3。
Comparative example 3
The present embodiment and embodiment 3 the difference is that:
In step 1, formaldehyde, benzenediol, nanometer galapectite pipe, brucite fiber, hydroxypropyl methyl cellulose and water quality Than for 0.75:3:0.4:0.2:0.2:100.The rate of addition of sodium hydroxide solution is 10mL/min.
In step 2, butyl titanate, dehydrated alcohol mass ratio are 1:20；Hydrochloric acid solution, dehydrated alcohol and water are by volume 2:20:5.The rate of addition of mixed liquor C is 10mL/min.
In step 3, Sol A and sol B mass ratio are 1:1.
The specific surface area of aerogel particles made from the present embodiment is 718m2/ g, porosity 89%, pore capacities are 1.67cm3/ g, density 3.61kg/m3。
From the data comparison of embodiment 1-3 and comparative example 1-3 it is found that aerogel particles made from embodiment 1-3 Performance parameter is more excellent.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.

Claims (7)

1. a kind of air purification wall cloth, it is characterised in that: including non-woven substrate, printing layer and the air cleaning successively bonded Layer；Wherein the air purification layer is formed by air cleaning slurry curing, the air cleaning slurry the preparation method is as follows:
Step 1: in mass ratio by formaldehyde, benzenediol, nanometer galapectite pipe, brucite fiber, hydroxypropyl methyl cellulose and water 1-2:3:0.1-0.3:0.05-0.15:0.05-0.15:100 mixing, obtains mixed liquor A, under agitation after mixing evenly The sodium hydroxide solution that concentration is 0.021mol/L is added drop-wise in mixed liquor A until the pH value of mixed liquor A is 7-8；Then exist 16-48h is reacted at 50-60 DEG C, obtains Sol A；
Step 2: butyl titanate, dehydrated alcohol 1:30-50 in mass ratio being mixed, mixed liquid B is obtained；The hydrochloric acid of 3mol/L is molten 3-5:5-15:5 is mixed by volume for liquid, dehydrated alcohol and water, obtains mixed liquor C；Under agitation by mixed liquor C drop It is added in isometric mixed liquid B；Then 8-16h is reacted at 50-60 DEG C, obtains sol B；
Step 3: Sol A being uniformly mixed with sol B 3-5:1 in mass ratio, mixed sols is obtained, mixed sols is aged 36- After 72h, solvent displacement 24-48h is carried out to mixed sols with excessive organic solvent A, then with excessive organic solvent B to mixed It closes colloidal sol and carries out solvent displacement 12-36h, then remove organic solvent B, obtain mixed gel；
Step 4: mixed gel being dried using supercritical fluid；
Step 5: the mixed gel after drying being carbonized, carbonization process specifically: by mixed gel, the hydroxide after drying Sodium 1:1-2 in mass ratio is mixed and is put in microwave device, and the first carbonization stage is first carried out under atmosphere of inert gases, and temperature is 250-350 DEG C, heating rate 20 DEG C/min, time 1-2h, microwave power 600-800W, microwave frequency 2450MHz；Then it carries out Second carbonization stage, temperature are 500-700 DEG C, heating rate 15 DEG C/min, time 2-4h, microwave power 1000-1200W, micro- Wave frequency rate 2450MHz；It after obtaining carbide, after carbide is washed away impurity and dried, is crushed, the gas of micron level is made Microgel particle；
Step 6: aerogel particles, soybean base adhesive being mixed with water 10-30:1-2:100 in mass ratio and made after being uniformly dispersed Obtain air cleaning slurry；
Wherein, the nanometer galapectite pipe in step 1 is by being activated: by nanometer galapectite pipe in its 400-600 times of matter 4-6h is impregnated in the 4wt% hydrochloric acid solution of amount, the nanometer galapectite pipe activated.
2. a kind of air purification wall cloth as described in claim 1, which is characterized in that airsetting after the air cleaning slurry coating The coating weight of glue particle is 0.05-4g/m2。
3. a kind of air purification wall cloth as described in claim 1, which is characterized in that sol B is before step 3 made from step 2 Also through overload silver processing: being in the silver nitrate solution of 0.25mol/L and to stir by the concentration that sol B is impregnated in 10-15 times of volume Uniformly, it is protected from light heating 2-3h at 50-60 DEG C, takes out sol B, sol B is impregnated in the citric acid three of 10-15 times of 0.5mol/L In sodium solution, 3-4h is reacted at 80-90 DEG C；After finally sol B is taken out and is eluted with water, the sol B for carrying silver is obtained.
4. a kind of air purification wall cloth as described in claim 1, which is characterized in that sodium hydroxide solution described in step 1 Rate of addition is 15-25mL/min；The rate of addition of mixed liquor C described in step 2 is 15-20mL/min.
5. a kind of air purification wall cloth as described in claim 1, which is characterized in that the step 3 midway organic solvent A is nothing Water-ethanol, the organic solvent B are n-hexane.
6. a kind of air purification wall cloth as described in claim 1, which is characterized in that step 4 condition are as follows: made using carbon dioxide For dried medium, 40-50 DEG C of temperature, pressure 5-15MPa, time 6-24h.
7. a kind of air purification wall cloth as described in claim 1, which is characterized in that the resulting carbide of step 5 wash away it is miscellaneous Also pass through hydrophobically modified after matter: with n-hexane being by volume that 3-5:10 is mixed by hexamethyldisilazane, obtain mixed liquor D, Mixed liquor D is mixed in carbide 20:1-3 in mass ratio, modified 12-36h, finally takes out carbide at 50-70 DEG C.
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