CN107213498A - A kind of air purifier purifying layer and preparation method thereof - Google Patents
A kind of air purifier purifying layer and preparation method thereof Download PDFInfo
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- CN107213498A CN107213498A CN201710287545.9A CN201710287545A CN107213498A CN 107213498 A CN107213498 A CN 107213498A CN 201710287545 A CN201710287545 A CN 201710287545A CN 107213498 A CN107213498 A CN 107213498A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L9/00—Disinfection, sterilisation or deodorisation of air
- A61L9/01—Deodorant compositions
- A61L9/014—Deodorant compositions containing sorbent material, e.g. activated carbon
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N37/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids
- A01N37/06—Unsaturated carboxylic acids or thio analogues thereof; Derivatives thereof
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
- A01N59/16—Heavy metals; Compounds thereof
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L9/00—Disinfection, sterilisation or deodorisation of air
- A61L9/01—Deodorant compositions
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L9/00—Disinfection, sterilisation or deodorisation of air
- A61L9/01—Deodorant compositions
- A61L9/013—Deodorant compositions containing animal or plant extracts, or vegetable material
Abstract
The present invention provides a kind of air purifier purifying layer and preparation method thereof, and the air cleaning includes following raw material with purifying layer：25 50 parts of activated carbon；5 10 parts of skew ray zeolite；13 parts of potassium sulfate；10 25 parts of attapulgite；12 parts of cationic surfactant；10 25 parts of diatomite；25 parts of sodium rice silver；25 parts of sodium rice titanium dioxide；10 20 parts of montmorillonite；35 parts of zinc oxide；5 10 parts of potassium sorbate；13 parts of natural plant essential oils；40 60 parts of deionized water.The present invention mixes activated carbon with montmorillonite, potassium sulfate, attapulgite, skew ray zeolite, substantially increase the adsorption capacity of activated carbon, the compositions such as Nano Silver, nano titanium oxide, zinc oxide, potassium sorbate are mixed, the effect of enhancing bactericidal of the present invention, the various harmful bacterias and bacterial spore in influenza virus, Escherichia coli, staphylococcus aureus and the air in air can effectively be suppressed, prevent it from propagating, antibiotic rate is up to more than 99.9%.
Description
Technical field
The invention belongs to technical field of air purification, and in particular to a kind of air purifier purifying layer and its preparation side
Method.
Background technology
In recent years, China's air pollution is more serious, and people are particularly near to the attention rate of air pollution also more and more higher
The continuous wide range of haze weather that phase occurs more promotes worry of the common people to air quality.The deterioration of air quality is
Daily life is had a strong impact on, PM2.5 turns into the project that must be detected daily.
Meanwhile, room air be flooded with particulate matter, formaldehyde, total volatile organism (TVOC), bacterium, virus, anaphylactogen,
The various pollutants such as gas with foreign flavor, radioactive source, being put into influences one of five maximum environmental factors on public health.Air is dirty
Contaminate turns into the problem of whole world facing to human health risk, in order to more efficiently purify air, also people one
Environmental clean life living environment, air purifying process has obtained the highest attention of people.The air that prior art is provided is net
Change material, function is single, and air purification effect is limited.
The content of the invention
Regarding the issue above, the present invention provides a kind of strong material for air purification of air-filtering ability and its system
Preparation Method.
Present invention employs following technical scheme：
A kind of air cleaning purifying layer, including following raw material：
25-50 parts of activated carbon；
5-10 parts of skew ray zeolite；
1-3 parts of potassium sulfate；
10-25 parts of attapulgite；
1-2 parts of cationic surfactant；
10-25 parts of diatomite；
2-5 parts of sodium rice silver；
2-5 parts of sodium rice titanium dioxide；
10-20 parts of montmorillonite；
3-5 parts of zinc oxide；
5-10 parts of potassium sorbate；
1-3 parts of natural plant essential oils；
40-60 parts of deionized water.
Preferably, the material for air purification includes following raw material：
30-40 parts of activated carbon；
7-8 parts of skew ray zeolite；
1-2 parts of potassium sulfate；
15-20 parts of attapulgite；
1-2 parts of cationic surfactant；
15-20 parts of diatomite；
3-4 parts of sodium rice silver；
3-4 parts of sodium rice titanium dioxide；
14-16 parts of montmorillonite；
4-5 parts of zinc oxide；
6-8 parts of potassium sorbate；
1-2 parts of natural plant essential oils；
50-60 parts of deionized water.
Preferably, the one kind or combination of the natural plant essential oils for following essential oil：Refined jasmine oil, lemon, purple sieve
Lenzin oil, lily essential oil, thyme essential oil.
Preferably, the montmorillonite is sodium montmorillonite.
The preparation method of the material for air purification comprises the following steps：
（1）Every raw material is got out by weight, it is standby；
（2）Activated carbon, skew ray zeolite, attapulgite, diatomite, montmorillonite, zinc oxide are mixed and 300-500 mesh is crushed to；
Add Nano Silver and nano titanium oxide and stir, obtain mixture；
（3）To step（2）In obtained mixture add binding agent, by the mixture sintering compression forming；
（4）Potassium sulfate, potassium sorbate are added in deionized water, 5-10min is stood after stirring, natural plants essence is added
Oil and cationic surfactant, stir, obtain mixed liquor；
（5）By step（3）In obtain compression forming mixture immersion step（4）In in obtained mixed liquor, make described mixed
Close the mixture that solution is impregnated with the compression forming completely；
（6）It will be soaked with after the mixture of the compression forming of mixed solution is drained and be placed in baking oven, heating, drying obtains air net
Change material.
Preferably, the step（2）Middle speed of agitator is 800-1000 revs/min, and mixing time is 10-20 minutes.
Preferably, the step（4）Middle speed of agitator is 100-150 revs/min, and mixing time is 5-10 minutes.
Preferably, the binding agent is polyimide type binding agent.
Preferably, the step（5）In, the mixture of compression forming is soaked 10-20 minutes at 20-30 DEG C, by temperature
Degree rise to 40-50 DEG C soak 40-60 minute, then by temperature rise to 50-60 DEG C immersion 5-10 minutes, finally cool the temperature to
20-30 DEG C is soaked 3-6 hours.
Compared with prior art, the beneficial effects of the invention are as follows：
Activated carbon is mixed with montmorillonite, potassium sulfate, attapulgite, skew ray zeolite, the adsorption capacity of activated carbon is substantially increased,
The compositions such as Nano Silver, nano titanium oxide, zinc oxide, potassium sorbate are mixed, and strengthen the effect of bactericidal of the present invention, can be effective
Suppress the various harmful bacterias and bacterium spore in influenza virus, Escherichia coli, staphylococcus aureus and the air in air
Son, prevents it from propagating, and antibiotic rate is up to more than 99.9%.The air purifying preparation of the present invention is even in higher temperature and relatively low absorption
Under matter partial pressure, still there is higher adsorption capacity.Assist to carry out air cleaning using natural plant essential oils, it is nontoxic, can be quick
The peculiar smell such as leather taste, smoke, paint-like flavour, musty, stink are dispelled, air purification effect is notable.
Embodiment
Embodiment 1
A kind of air cleaning purifying layer, it is characterised in that including following raw material：
25 grams of activated carbon；
10 grams of skew ray zeolite；
1 gram of potassium sulfate；
25 grams of attapulgite；
1 gram of cationic surfactant；
25 grams of diatomite；
2 grams of sodium rice silver；
5 grams of sodium rice titanium dioxide；
10 grams of sodium montmorillonite；
5 grams of zinc oxide；
5 grams of potassium sorbate；
0.2 gram of refined jasmine oil；
0.6 gram of violet essential；
0.2 gram of thyme essential oil；
40 grams of deionized water.
The preparation method of above-mentioned material for air purification comprises the following steps：
（1）Every raw material is got out by weight, it is standby；
（2）Activated carbon, skew ray zeolite, attapulgite, diatomite, montmorillonite, zinc oxide are mixed and 300 mesh are crushed to；Again plus
Enter Nano Silver and nano titanium oxide and stir, obtain mixture；Speed of agitator is 800 revs/min, and mixing time is 20
Minute.
（3）To step（2）In obtained mixture add polyimide type binding agent, the mixture sintering is compressed into
Type；
（4）Potassium sulfate, potassium sorbate are added in deionized water, 5-10min is stood after stirring, natural plants essence is added
Oil and cationic surfactant, stir, obtain mixed liquor；Speed of agitator is 100 revs/min, and mixing time is 10 points
Clock.
（5）By step（3）In obtain compression forming mixture immersion step（4）In in obtained mixed liquor, make pressure
The mixture for shortening type into is soaked 20 minutes at 20 DEG C, and temperature is risen into 40 DEG C is soaked 60 minutes, then temperature is risen into 50
DEG C immersion 10 minutes, finally cool the temperature to 20 DEG C soak 6 hours, the mixed solution is impregnated with the compression forming completely
Mixture；
（6）It will be soaked with after the mixture of the compression forming of mixed solution is drained and be placed in baking oven, heating, drying obtains air net
Change material.
Embodiment 2
A kind of air cleaning purifying layer, including following raw material：
50 grams of activated carbon；
5 grams of skew ray zeolite；
3 grams of potassium sulfate；
10 grams of attapulgite；
2 grams of cationic surfactant；
10 grams of diatomite；
5 grams of sodium rice silver；
2 grams of sodium rice titanium dioxide；
20 grams of sodium montmorillonite；
3 grams of zinc oxide；
10 grams of potassium sorbate；
0.5 gram of refined jasmine oil；
0.5 gram of lemon；
1 gram of violet essential；
1 gram of lily essential oil；
60 grams of deionized water.
The preparation method of above-mentioned material for air purification comprises the following steps：
（1）Every raw material is got out by weight, it is standby；
（2）Activated carbon, skew ray zeolite, attapulgite, diatomite, montmorillonite, zinc oxide are mixed and 500 mesh are crushed to；Again plus
Enter Nano Silver and nano titanium oxide and stir, obtain mixture；Speed of agitator is 1000 revs/min, and mixing time is
10 minutes.
（3）To step（2）In obtained mixture add polyimide type binding agent, the mixture sintering is compressed into
Type；
（4）Potassium sulfate, potassium sorbate are added in deionized water, 5-10min is stood after stirring, natural plants essence is added
Oil and cationic surfactant, stir, obtain mixed liquor；Speed of agitator is 150 revs/min, and mixing time is 5 points
Clock.
（5）By step（3）In obtain compression forming mixture immersion step（4）In in obtained mixed liquor, make pressure
The mixture for shortening type into is soaked 10 minutes at 30 DEG C, and temperature is risen into 50 DEG C is soaked 40 minutes, then temperature is risen into 60
DEG C immersion 5 minutes, finally cool the temperature to 30 DEG C soak 3 hours, the mixed solution is impregnated with the compression forming completely
Mixture；
（6）It will be soaked with after the mixture of the compression forming of mixed solution is drained and be placed in baking oven, heating, drying obtains air net
Change material.
Embodiment 3
A kind of air cleaning purifying layer, including following raw material：
40 grams of activated carbon；
8 grams of skew ray zeolite；
2 grams of potassium sulfate；
18 grams of attapulgite；
1.5 grams of cationic surfactant；
18 grams of diatomite；
4 grams of sodium rice silver；
3 grams of sodium rice titanium dioxide；
15 grams of sodium montmorillonite；
4 grams of zinc oxide；
8 grams of potassium sorbate；
2 grams of natural plant essential oils；
50 grams of deionized water.
The preparation method of above-mentioned material for air purification comprises the following steps：
（1）Every raw material is got out by weight, it is standby；
（2）Activated carbon, skew ray zeolite, attapulgite, diatomite, montmorillonite, zinc oxide are mixed and 400 mesh are crushed to；Again plus
Enter Nano Silver and nano titanium oxide and stir, obtain mixture；Speed of agitator is 900 revs/min, and mixing time is 15
Minute.
（3）To step（2）In obtained mixture add polyimide type binding agent, the mixture sintering is compressed into
Type；
（4）Potassium sulfate, potassium sorbate are added in deionized water, 8min is stood after stirring, adds natural plant essential oils
And cationic surfactant, stir, obtain mixed liquor；Speed of agitator is 120 revs/min, and mixing time is 8 minutes.
（5）By step（3）In obtain compression forming mixture immersion step（4）In in obtained mixed liquor, make pressure
The mixture for shortening type into is soaked 15 minutes at 25 DEG C, and temperature is risen into 45 DEG C is soaked 50 minutes, then temperature is risen into 55
DEG C immersion 8 minutes, finally cool the temperature to 25 DEG C soak 4 hours, the mixed solution is impregnated with the compression forming completely
Mixture；
（6）It will be soaked with after the mixture of the compression forming of mixed solution is drained and be placed in baking oven, heating, drying obtains air net
Change material.
Embodiment 4
The air purification layer that applicant is prepared using the inventive method is installed in air purifier, carries out air cleaning experiment,
Experimental result is as shown in table 1 below：
| Experimental project | Embodiment 1 | Embodiment 2 | Embodiment 3 | Prior art |
| Formaldehyde filter efficiency | >99% | >99.9% | >99.5% | ≤98% |
| Benzene filter efficiency | >98% | >99.6% | >99% | ≤98% |
| Ammonia filter efficiency | >99.5% | >99.8% | >99.3% | ≤99% |
| PM2.5 filter efficiencies | >99% | >99.9% | >99.6% | ≤99% |
| PM10 filter efficiencies | >99.7% | >99.96% | >99.85% | ≤99% |
Table 1
The present invention mixes activated carbon with montmorillonite, potassium sulfate, attapulgite, skew ray zeolite, substantially increases the suction of activated carbon
Attached ability, the composition such as Nano Silver, nano titanium oxide, zinc oxide, potassium sorbate mixing, strengthens the effect of bactericidal of the present invention
Really, can effectively suppress the various harmful bacterias in influenza virus, Escherichia coli, staphylococcus aureus and the air in air with
And bacterial spore, prevent it from propagating, antibiotic rate is up to more than 99.9%.The present invention air purifying preparation even in higher temperature and compared with
Under low adsorbate partial pressure, still there is higher adsorption capacity.Assist to carry out air cleaning, nontoxic nothing using natural plant essential oils
Evil, can quickly dispel the peculiar smell such as leather taste, smoke, paint-like flavour, musty, stink, air purification effect is notable.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, although with reference to foregoing reality
Apply example the present invention is described in detail, for those skilled in the art, it still can be to foregoing each implementation
Technical scheme described in example is modified, or carries out equivalent substitution to which part technical characteristic.All essences in the present invention
God is with principle, and any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.
Claims (9)
1. a kind of air cleaning purifying layer, it is characterised in that including following raw material：
25-50 parts of activated carbon；
5-10 parts of skew ray zeolite；
1-3 parts of potassium sulfate；
10-25 parts of attapulgite；
1-2 parts of cationic surfactant；
10-25 parts of diatomite；
2-5 parts of sodium rice silver；
2-5 parts of sodium rice titanium dioxide；
10-20 parts of montmorillonite；
3-5 parts of zinc oxide；
5-10 parts of potassium sorbate；
1-3 parts of natural plant essential oils；
40-60 parts of deionized water.
2. a kind of material for air purification according to claim 1, it is characterised in that the material for air purification includes following
Raw material：
30-40 parts of activated carbon；
7-8 parts of skew ray zeolite；
1-2 parts of potassium sulfate；
15-20 parts of attapulgite；
1-2 parts of cationic surfactant；
15-20 parts of diatomite；
3-4 parts of sodium rice silver；
3-4 parts of sodium rice titanium dioxide；
14-16 parts of montmorillonite；
4-5 parts of zinc oxide；
6-8 parts of potassium sorbate；
1-2 parts of natural plant essential oils；
50-60 parts of deionized water.
3. a kind of material for air purification according to claim 1, it is characterised in that the natural plant essential oils are following essence
One kind of oil or combination：Refined jasmine oil, lemon, violet essential, lily essential oil, thyme essential oil.
4. a kind of material for air purification according to claim 1, it is characterised in that the montmorillonite is sodium montmorillonite.
5. a kind of preparation method of material for air purification as claimed in claim 1, it is characterised in that comprise the following steps：
（1）Every raw material is got out by weight, it is standby；
（2）Activated carbon, skew ray zeolite, attapulgite, diatomite, montmorillonite, zinc oxide are mixed and 300-500 mesh is crushed to；
Add Nano Silver and nano titanium oxide and stir, obtain mixture；
（3）To step（2）In obtained mixture add binding agent, by the mixture sintering compression forming；
（4）Potassium sulfate, potassium sorbate are added in deionized water, 5-10min is stood after stirring, natural plants essence is added
Oil and cationic surfactant, stir, obtain mixed liquor；
（5）By step（3）In obtain compression forming mixture immersion step（4）In in obtained mixed liquor, make described mixed
Close the mixture that solution is impregnated with the compression forming completely；
（6）It will be soaked with after the mixture of the compression forming of mixed solution is drained and be placed in baking oven, heating, drying obtains air net
Change material.
6. preparation method according to claim 5, it is characterised in that the step（2）Middle speed of agitator is 800-1000
Rev/min, mixing time is 10-20 minutes.
7. preparation method according to claim 5, it is characterised in that the step（4）Middle speed of agitator is 100-150
Rev/min, mixing time is 5-10 minutes.
8. preparation method according to claim 5, it is characterised in that the binding agent is polyimide type binding agent.
9. preparation method according to claim 5, it is characterised in that the step（5）In, make the mixture of compression forming
Soaked 10-20 minutes at 20-30 DEG C, temperature is risen into 40-50 DEG C is soaked 40-60 minutes, then temperature is risen into 50-60
DEG C immersion 5-10 minute, finally cool the temperature to 20-30 DEG C immersion 3-6 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710287545.9A CN107213498A (en) | 2017-04-27 | 2017-04-27 | A kind of air purifier purifying layer and preparation method thereof |
Applications Claiming Priority (1)
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|---|---|---|---|
| CN201710287545.9A CN107213498A (en) | 2017-04-27 | 2017-04-27 | A kind of air purifier purifying layer and preparation method thereof |
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Family
ID=59945168
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109200322A (en) * | 2018-10-08 | 2019-01-15 | 成都毅诚机电工程有限公司 | A kind of idle call air purifying preparation and preparation method thereof |
| CN110237291A (en) * | 2019-05-31 | 2019-09-17 | 广州市龙能城市运营管理股份有限公司 | A kind of active carbon base agent of deodorising and sterilizing and preparation method thereof |
| CN110367193A (en) * | 2019-08-13 | 2019-10-25 | 北京桃古图生物科技有限公司 | It is a kind of for improve cultivation colony house environment improver and its preparation method and application |
| CN110404375A (en) * | 2019-08-06 | 2019-11-05 | 安徽恒杰新材料科技股份有限公司 | A kind of air cleaning and drying material with bactericidal function |
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| CN102357255A (en) * | 2011-11-04 | 2012-02-22 | 海尔科化工程塑料国家工程研究中心股份有限公司 | Actively adsorbing sterilization and smell removing bag |
| CN104275158A (en) * | 2014-09-15 | 2015-01-14 | 明光市嘉益电控科技有限公司 | High-quality and low-cost modified active carbon air filtering material for air conditioner and preparation method of air filtering material |
| CN104436263A (en) * | 2014-12-09 | 2015-03-25 | 王先军 | Multi-purpose water-containing granular air purifying agent and production method thereof |
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2017
- 2017-04-27 CN CN201710287545.9A patent/CN107213498A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102357255A (en) * | 2011-11-04 | 2012-02-22 | 海尔科化工程塑料国家工程研究中心股份有限公司 | Actively adsorbing sterilization and smell removing bag |
| CN104275158A (en) * | 2014-09-15 | 2015-01-14 | 明光市嘉益电控科技有限公司 | High-quality and low-cost modified active carbon air filtering material for air conditioner and preparation method of air filtering material |
| CN104436263A (en) * | 2014-12-09 | 2015-03-25 | 王先军 | Multi-purpose water-containing granular air purifying agent and production method thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109200322A (en) * | 2018-10-08 | 2019-01-15 | 成都毅诚机电工程有限公司 | A kind of idle call air purifying preparation and preparation method thereof |
| CN110237291A (en) * | 2019-05-31 | 2019-09-17 | 广州市龙能城市运营管理股份有限公司 | A kind of active carbon base agent of deodorising and sterilizing and preparation method thereof |
| CN110237291B (en) * | 2019-05-31 | 2021-05-18 | 广州市龙能城市运营管理股份有限公司 | Active carbon-based deodorizing bactericide and preparation method thereof |
| CN110404375A (en) * | 2019-08-06 | 2019-11-05 | 安徽恒杰新材料科技股份有限公司 | A kind of air cleaning and drying material with bactericidal function |
| CN110367193A (en) * | 2019-08-13 | 2019-10-25 | 北京桃古图生物科技有限公司 | It is a kind of for improve cultivation colony house environment improver and its preparation method and application |
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Application publication date: 20170929 |