CN107998750A - Prepare the method that graphene oxide is modified air conditioner filter screen - Google Patents
Prepare the method that graphene oxide is modified air conditioner filter screen Download PDFInfo
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- CN107998750A CN107998750A CN201711243347.9A CN201711243347A CN107998750A CN 107998750 A CN107998750 A CN 107998750A CN 201711243347 A CN201711243347 A CN 201711243347A CN 107998750 A CN107998750 A CN 107998750A
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- Prior art keywords
- filter screen
- air conditioner
- conditioner filter
- graphene oxide
- modified air
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0027—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
- B01D46/0032—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions using electrostatic forces to remove particles, e.g. electret filters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/04—Additives and treatments of the filtering material
- B01D2239/0407—Additives and treatments of the filtering material comprising particulate additives, e.g. adsorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/04—Additives and treatments of the filtering material
- B01D2239/0414—Surface modifiers, e.g. comprising ion exchange groups
- B01D2239/0428—Rendering the filter material hydrophobic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/04—Additives and treatments of the filtering material
- B01D2239/0442—Antimicrobial, antibacterial, antifungal additives
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Carbon And Carbon Compounds (AREA)
- Filtering Materials (AREA)
Abstract
A kind of method for preparing graphene oxide and being modified air conditioner filter screen, graphene oxide suspension is mixed with organic siliconresin, base polyurethane prepolymer for use as and curing agent, stirs evenly, mixed liquor is made；Then pending air conditioner filter screen is extracted in tridecafluoro-n-octyltriethoxysilane, drain rear spontaneous curing, by prepared mixed liquor even application on air conditioner filter screen, naturally dry under the conditions of ultraviolet light curing, it is then placed in 150 DEG C~180 DEG C baking ovens dry, 220 DEG C of curings are warming up to again, card board package is used after cooling, and labelling is stand-by；The method for preparing graphene oxide and being modified air conditioner filter screen of the present invention, one layer of coating for having Electrostatic Absorption effect and hydrophobic performance is formed in the fibrous material surface of air conditioner filter screen, the particle that gradation footpath in the middle part of air is less than 2 microns can be adsorbed, reaches good air purification and filter effect；Meanwhile using the graphene oxide prepared by this law side be modified air conditioner filter screen and also have and be not easy to grow bacterium, it is easy to clean, the characteristics of durable.
Description
Technical field
The invention belongs to air regulator field, and in particular to a kind of side for preparing graphene oxide and being modified air conditioner filter screen
Method.
Background technology
Air regulator, i.e. air-conditioning, are widely used in production and living instantly；Air conditioner filter screen is air-conditioning
To first of barrier of air purification, generally latticed or lenticular honeycomb structure, common air conditioner filter screen material have aluminium net,
Stainless (steel) wire, non-woven fabrics, web, active carbon filter screen etc., these traditional materials are past to the purification absorption property of impurity in air
Toward being not very good, it can only stop or simply adsorb some large particulate matters, it is invalid to molecule dust.Graphene is
A kind of new material risen in recent years, is made of the carbon atom of individual layer laminated structure, has good physicochemical property.And due to
Graphene and its derived material have larger specific surface area, good chemical stability, in recent years in environmental contaminants depth
Application in terms of adsorption treatment gradually attracts attention, such as graphene is used in processing as adsorbent and is given up
The method of water, exhaust gas, has tided over laboratory stage and to industrialized development.Graphene and its derived material are utilized
In terms of air purification, the charged dust in the electrostatic adsorption force of graphene and its derived material absorption air and small are utilized
Grain, can obtain the absorption property that the filter screen of traditional material is unable to reach, have a good application prospect.
The content of the invention
The present invention provides a kind of method for preparing graphene oxide and being modified air conditioner filter screen, utilizes the ratio of graphene oxide superelevation
Surface and distinctive Electrostatic Absorption ability, can adsorb the particle of smaller in air, reach good air purification and filtering effect
Fruit；Meanwhile there is hydrophobicity using the graphene oxide modification air conditioner filter screen prepared by this law side, it can prevent bacteria breed, easily
In cleaning, durable.
In view of the deficiencies of the prior art, the present invention provides a kind of method for preparing graphene oxide and being modified air conditioner filter screen, bag
Include following steps：
1) graphene oxide is prepared using Hummers methods, 98% concentrated sulfuric acid of 4L is cooled to 0 DEG C, adds 20g graphite
Alkene, 10g sodium nitrate and 6g potassium permanganate, when magnetic agitation 5 is small in 0 DEG C of water-bath, are warming up to 35 DEG C, react 30min, add deionization
Water 1L, is brought rapidly up to 98 DEG C, keeps 15min, stops heating, is settled to 10L with 40 DEG C of deionized waters, adds 1L30% dioxygens
Water and 7L5% chlorohydric acid picklings, magnetic agitation 5min, centrifuge washing (remove supernatant after 7000r/min centrifugations 10min, stir
1min, adding deionized water, 7000r/min centrifuges 10min again, is so repeated 3 times or more) to pH it is to be aoxidized close to neutrality
Graphene, adds 0.5-1L heptane ultrasound 2h, it is fully peeled off, and graphene oxide suspension is made；
2) and then 0.5-1L organic siliconresins, 0.05-0.1L base polyurethane prepolymer for use as and 5-10g curing agent are added, stirring is equal
It is even, mixed liquor is made；
3) pending air conditioner filter screen is extracted 2-3 times in tridecafluoro-n-octyltriethoxysilane, it is 3-5 minutes each,
Drain, spontaneous curing 12-24h；
4) by prepared mixed liquor even application on the air conditioner filter screen handled through step 3), under the conditions of ultraviolet light curing
Naturally dry 3-5h, is then placed in 150 DEG C~180 DEG C baking ovens dry 1-2h, then is warming up to 220 DEG C and cures 10-15min, cold
But card board package is used afterwards, and labelling is stand-by.
Preferably, the method for preparing graphene oxide and being modified air conditioner filter screen, wherein：The graphene oxide suspends
The concentration range of liquid is in 2~5g/L.
Preferably, the method for preparing graphene oxide and being modified air conditioner filter screen, wherein：The pending air-conditioning filter
Net Web materials select nylon material or carbon fibre material,
The Web materials of the pending air conditioner filter screen must shake through 200 mesh above diamond dust of fineness polishes.
The graphene oxide prepared using this method, which is modified air conditioner filter screen, has hydrophobicity.
The graphene oxide prepared using this method is modified air conditioner filter screen and should not frequently bend in a short time, otherwise easily makes
Into air conditioner filter screen surfacing fatigue, peeling comes off.
Preferably, the method for preparing graphene oxide and being modified air conditioner filter screen, wherein：The curing agent is divinyl
One kind in triamine or triethylene tetramine.
Preferably, the method for preparing graphene oxide and being modified air conditioner filter screen, wherein：The mixed liquor is filtered in air-conditioning
Online quantity for spray is 0.1-0.2L/m2。
Preferably, the method for preparing graphene oxide and being modified air conditioner filter screen, wherein：The organic siliconresin is to have
Butanol solution of the machine silicones content in 30-40%.
Beneficial effect：
The method for preparing graphene oxide and being modified air conditioner filter screen of the present invention, forms in the fibrous material surface of air conditioner filter screen
One layer of coating for having Electrostatic Absorption effect and hydrophobic performance, can adsorb the particle that gradation footpath in the middle part of air is less than 2 microns, reach
Good air purification and filter effect；Meanwhile it is modified air conditioner filter screen using the graphene oxide prepared by this law side and also has not
Bacterium is easily grown, it is easy to clean, the characteristics of durable.
Embodiment
With reference to specific embodiment, the invention will be further described.
Embodiment 1
A kind of method for preparing graphene oxide and being modified air conditioner filter screen, comprises the following steps：
1) graphene oxide is prepared using Hummers methods, 98% concentrated sulfuric acid of 4L is cooled to 0 DEG C, adds 20g graphite
Alkene, 10g sodium nitrate and 6g potassium permanganate, when magnetic agitation 5 is small in 0 DEG C of water-bath, are warming up to 35 DEG C, react 30min, add deionization
Water 1L, is brought rapidly up to 98 DEG C, keeps 15min, stops heating, is settled to 10L with 40 DEG C of deionized waters, adds 1L30% dioxygens
Water and 7L5% chlorohydric acid picklings, magnetic agitation 5min, centrifuge washing (remove supernatant after 7000r/min centrifugations 10min, stir
1min, adding deionized water, 7000r/min centrifuges 10min again, is so repeated 3 times) to pH it is close to neutrality to obtain graphene oxide,
1L heptane ultrasound 2h are added, it is fully peeled off, graphene oxide suspension is made；
2) and then 1L organic siliconresins, 0.1L base polyurethane prepolymer for use as and 10g curing agent are added, stirs evenly, mixing is made
Liquid；
3) pending air conditioner filter screen is extracted 2 times in tridecafluoro-n-octyltriethoxysilane, 5 minutes every time, dripped
It is dry, spontaneous curing 24h；
4) by prepared mixed liquor even application on the air conditioner filter screen handled through step 3), under the conditions of ultraviolet light curing
Naturally dry 5h, is then placed in 180 DEG C of baking ovens dry 1h, then is warming up to 220 DEG C of curing 10min, and carton box is used after cooling
Packaging, labelling are stand-by.
The concentration range of the graphene oxide suspension is in 2~3g/L, in practice, it has been found that graphene oxide suspension
Concentration when being more than 6g/L, adsorption effect is no longer obvious with the increase of concentration.
The pending air conditioner filter screen Web materials select nylon material, because its performance is stablized, and to graphene oxide
Electrostatic Absorption has addition effect.
The Web materials of the pending air conditioner filter screen must shake through 200 mesh above diamond dust of fineness polishes, and can strengthen
The adhesive force of the face coat of air conditioner filter screen, is not easy peeling of chapping.
The graphene oxide prepared using this method, which is modified air conditioner filter screen, has hydrophobicity, can make what screen surface was adsorbed
Dust is easily formed micelle, even if being blown afloat again from air conditioner filter screen surface by the high wind of air-conditioning, as its particle diameter and quality
It is larger and fall within ground, floating dust will not be formed.
The graphene oxide prepared using this method is modified air conditioner filter screen and should not frequently bend in a short time, otherwise easily makes
Into air conditioner filter screen surfacing fatigue, peeling comes off.
The curing agent is triethylene tetramine, in practice, it has been found that only needing to add the curing agent of 0.3-0.5% on a small quantity
Play effective acceleration solidification.
Quantity for spray of the mixed liquor on air conditioner filter screen is 0.18L/m2, in the present invention mixed liquor cost that is sprayed compared with
Height, although more preferable adsorption effect can be obtained by increasing quantity for spray, but still with 0.1-0.2L/m2The filtering that is reached of quantity for spray
Effect and cost ratio are optimal.
The organic siliconresin is butanol solution of the organic siliconresin content 30%.
Embodiment 2
A kind of method for preparing graphene oxide and being modified air conditioner filter screen, comprises the following steps：
1) graphene oxide is prepared using Hummers methods, 98% concentrated sulfuric acid of 4L is cooled to 0 DEG C, adds 20g graphite
Alkene, 10g sodium nitrate and 6g potassium permanganate, when magnetic agitation 5 is small in 0 DEG C of water-bath, are warming up to 35 DEG C, react 30min, add deionization
Water 1L, is brought rapidly up to 98 DEG C, keeps 15min, stops heating, is settled to 10L with 40 DEG C of deionized waters, adds 1L30% dioxygens
Water and 7L5% chlorohydric acid picklings, magnetic agitation 5min, centrifuge washing (remove supernatant after 7000r/min centrifugations 10min, stir
1min, adding deionized water, 7000r/min centrifuges 10min again, is so repeated 3 times or more) to pH it is to be aoxidized close to neutrality
Graphene, adds 0.5 heptane ultrasound 2h, it is fully peeled off, and graphene oxide suspension is made；
2) and then 0.5 organic siliconresin, 0.05 base polyurethane prepolymer for use as and 5 curing agent are added, stirs evenly, mixing is made
Liquid；
3) pending air conditioner filter screen is extracted 3 times in tridecafluoro-n-octyltriethoxysilane, 3-5 minutes each, drip
It is dry, spontaneous curing 24h；
4) by prepared mixed liquor even application on the air conditioner filter screen handled through step 3), under the conditions of ultraviolet light curing
Naturally dry 5h, is then placed in 150 DEG C of baking ovens dry 2h, then is warming up to 220 DEG C of curing 15min, and carton box is used after cooling
Packaging, labelling are stand-by.
The concentration range of the graphene oxide suspension is in 3~5g/L.
The pending air conditioner filter screen Web materials select nylon material or carbon fibre material,
The Web materials of the pending air conditioner filter screen must shake through 200 mesh above diamond dust of fineness polishes.
The curing agent is diethylenetriamine.
Quantity for spray of the mixed liquor on air conditioner filter screen is 0.2L/m2。
The organic siliconresin is butanol solution of the organic siliconresin content 40%.
Comparative example 1
Graphene oxide prepared by selection embodiment 1,2 methods is modified air conditioner filter screen, is called A strainers, B filters respectively
Net, separately takes commercially available Ai Dejia boards AD-D16 types air conditioner filter screen, peace crin board high efficiency electrostatic air conditioner filter screen, is referred to as C strainers
With D strainers, four strainers are weighed after record, are separately mounted to four new oaks KFR-35GW/BpTYC1+1 type air-conditionings
On, the type air-conditioning is 1.5 frequency conversion hanging machine air conditioners, starts air-conditioning, air-conditioning heating temperature is both configured to 24 DEG C, air output is all
For maximum, air conditioner filter screen is removed to record of weighing after 30 days；It should be noted that experiment place is Jiangsu Province somewhere development zone,
There is the enterprise that thermal power plant, chemical plant and more families have miniature boiler within three kilometers of surrounding, dust in air content is higher；
The experiment time started is mid-October, and four air-conditionings are mounted side by side in certain local company warehouse respectively；The data obtained is as follows：
| Strainer | Quality (g) before experiment | Quality (g) after experiment | Adsorb dust quality (g) |
| A strainers | 20.112 | 23.323 | 3.211 |
| B strainers | 20.694 | 24.101 | 3.407 |
| C strainers | 23.835 | 25.940 | 2.105 |
| D strainers | 26.119 | 28.712 | 2.593 |
Quality is to adsorb dust quality before quality subtracts experiment after experiment, in the case where other experiment conditions are identical,
Adsorb the quality B of dust>A>D>C, it can be seen that, the graphene oxide prepared by method side of the present invention is modified the absorption of air conditioner filter screen
Positive effect is better than common air-conditioning strainer and the air conditioner filter screen of normal tape Electrostatic Absorption function.
Comparative example 2
On the basis of embodiment 1, the graphene oxide prepared by selection embodiment 1,2 methods is modified air conditioner filter screen conduct
Experimental subjects, air conditioner filter screen in 30 days during the experiments, carefully removed every 3 days and weighed, then put in back air-conditioning, continue to survey
Examination, acquired results are as follows：
| Weigh the time (since experiment number of days) | A strainer quality (g) | Weighed (g) of poor quality with last time |
| 0 | 20.112 | 0 |
| 3 | 20.622 | 0.510 |
| 6 | 21.123 | 0.501 |
| 9 | 21.586 | 0.463 |
| 12 | 21.987 | 0.401 |
| 15 | 22.342 | 0.355 |
| 18 | 22.685 | 0.343 |
| 21 | 22.989 | 0.304 |
| 24 | 23.179 | 0.190 |
| 27 | 23.306 | 0.127 |
| 30 | 23.388 | 0.082 |
A strainer quality increasing degrees are increased over time and reduced, it can be seen that, dust particles are more in atmosphere
Area, the graphene oxide prepared by the method for the present invention, which is modified air conditioner filter screen, to cause air with the increase of absorption Dust Capacity
Purification filtering reduced capability, so, it is proposed that the more place of dust particles is once of the invention every cleaning in 2-3 months in atmosphere
Graphene oxide prepared by method is modified air conditioner filter screen.
Although embodiment of the present invention is disclosed as above, it is not restricted in specification and embodiment listed
With it can be applied to various suitable the field of the invention completely, can be easily for those skilled in the art
Realize other modification, therefore under the universal limited without departing substantially from claim and equivalency range, it is of the invention and unlimited
In specific details and shown here as the embodiment with description.
Claims (9)
- A kind of 1. method for preparing graphene oxide and being modified air conditioner filter screen, it is characterised in that：Comprise the following steps：1) graphene oxide is prepared using Hummers methods, 98% concentrated sulfuric acid of 4L is cooled to 0 DEG C, adds 20g graphenes, 10g Sodium nitrate and 6g potassium permanganate, when magnetic agitation 5 is small in 0 DEG C of water-bath, are warming up to 35 DEG C, react 30min, add deionized water 1L, Be brought rapidly up to 98 DEG C, keep 15min, stop heating, 10L is settled to 40 DEG C of deionized waters, add 1L30% hydrogen peroxide and 7L5% chlorohydric acid picklings, magnetic agitation 5min, centrifuge washing (remove supernatant after 7000r/min centrifugations 10min, stir 1min, Adding deionized water, 7000r/min centrifuges 10min again, is so repeated 3 times or more) to pH it is to obtain graphite oxide close to neutrality Alkene, adds 0.5-1L heptane ultrasound 2h, it is fully peeled off, and graphene oxide suspension is made；2) and then 0.5-1L organic siliconresins, 0.05-0.1L base polyurethane prepolymer for use as and 5-10g curing agent are added, stirs evenly, make Into mixed liquor；3) pending air conditioner filter screen is extracted 2-3 times in tridecafluoro-n-octyltriethoxysilane, it is 3-5 minutes each, drain, Spontaneous curing 12-24h；4) it is natural under the conditions of ultraviolet light curing by prepared mixed liquor even application on the air conditioner filter screen handled through step 3) 3-5h is dried, is then placed in 150 DEG C~180 DEG C baking ovens dry 1-2h, then is warming up to 220 DEG C of curing 10-15min, after cooling It is stand-by using card board package, labelling.
- 2. the method as claimed in claim 1 for preparing graphene oxide and being modified air conditioner filter screen, it is characterised in that：The oxidation stone The concentration range of black alkene suspension is in 2~5g/L.
- 3. the method as claimed in claim 1 for preparing graphene oxide and being modified air conditioner filter screen, it is characterised in that：It is described pending Air conditioner filter screen Web materials select nylon material or carbon fibre material.
- 4. the method as claimed in claim 3 for preparing graphene oxide and being modified air conditioner filter screen, it is characterised in that：It is described pending The Web materials of air conditioner filter screen must shake through 200 mesh above diamond dust of fineness polishes.
- 5. the method as claimed in claim 1 for preparing graphene oxide and being modified air conditioner filter screen, it is characterised in that：Using this method The graphene oxide of preparation, which is modified air conditioner filter screen, has hydrophobicity.
- 6. the method as claimed in claim 5 for preparing graphene oxide and being modified air conditioner filter screen, it is characterised in that：Using this method The graphene oxide of preparation is modified air conditioner filter screen and should not frequently bend in a short time, otherwise easily causes air conditioner filter screen surfacing Fatigue and peeling comes off.
- 7. the method as claimed in claim 1 for preparing graphene oxide and being modified air conditioner filter screen, it is characterised in that：The curing agent For one kind in diethylenetriamine or triethylene tetramine.
- 8. the method as claimed in claim 1 for preparing graphene oxide and being modified air conditioner filter screen, it is characterised in that：The mixed liquor Quantity for spray on air conditioner filter screen is 0.1-0.2L/m2。
- 9. the method as claimed in claim 1 for preparing graphene oxide and being modified air conditioner filter screen, it is characterised in that：The organosilicon Resin is butanol solution of the organic siliconresin content in 30-40%.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109589691A (en) * | 2019-01-30 | 2019-04-09 | 多凌新材料科技股份有限公司 | With static reinforcing type graphene oxide filter material, its production method and application |
| CN110964306A (en) * | 2018-09-29 | 2020-04-07 | 宁波方太厨具有限公司 | Preparation method of waterborne polyurethane conductive gel and air filter screen |
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| CN104492674A (en) * | 2014-11-20 | 2015-04-08 | 东南大学 | Method for preparing graphene-based air conditioner filter net by spraying method |
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2017
- 2017-11-30 CN CN201711243347.9A patent/CN107998750A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104492674A (en) * | 2014-11-20 | 2015-04-08 | 东南大学 | Method for preparing graphene-based air conditioner filter net by spraying method |
Non-Patent Citations (1)
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| 傅玲等: ""Hummers法制备氧化石墨时影响氧化程度的工艺因素研究"", 《炭素》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110964306A (en) * | 2018-09-29 | 2020-04-07 | 宁波方太厨具有限公司 | Preparation method of waterborne polyurethane conductive gel and air filter screen |
| CN109589691A (en) * | 2019-01-30 | 2019-04-09 | 多凌新材料科技股份有限公司 | With static reinforcing type graphene oxide filter material, its production method and application |
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