CN110180260A - A kind of air purifying filter core and preparation method - Google Patents
A kind of air purifying filter core and preparation method Download PDFInfo
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- CN110180260A CN110180260A CN201910399733.XA CN201910399733A CN110180260A CN 110180260 A CN110180260 A CN 110180260A CN 201910399733 A CN201910399733 A CN 201910399733A CN 110180260 A CN110180260 A CN 110180260A
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- filter core
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- nano coating
- hydrophobic nano
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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
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- 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
-
- 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
- B01D2239/0471—Surface coating material
- B01D2239/0492—Surface coating material on fibres
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- 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
- B01D2239/10—Filtering material manufacturing
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- Chemical Kinetics & Catalysis (AREA)
- Filtering Materials (AREA)
Abstract
The embodiment of the invention provides a kind of air purifying filter core, the filter core includes filter core substrate and the super-hydrophobic nano coating coated in filter core substrate surface and inside；The filter core substrate is made of the material of fibrous reticular structure；The super-hydrophobic nano coating includes the mixture of fluorine-carbon modified polyacrylic resin and the fluorine monomer that joined polyurethane and nanoparticle.The present invention also provides a kind of preparation methods of air filtering core, which comprises super-hydrophobic nano coating is coated to filter core substrate surface and inside by impregnation method or spraying method.Air purifying filter core of the present invention, so that particulate matter and bacterial virus are not easy to adhere to, effectively reduces air purification efficiency with the performance degradation speed used due to the ultra-hydrophobicity of material surface.
Description
Technical field
The present invention relates to technical field of air purification, more particularly to a kind of air purifying filter core and preparation method.
Background technique
In recent years, particulate pollutant concentration is higher in the air due to caused by environmental pollution, and air cleaning unit obtains
Extensive use.Critical component of the air filtering core as air cleaning unit, for particulate matter different size of in air
It is filtered purification.Currently, most air purifying filter core material is prepared by micrometer fibers, year in year out, largely
Tiny particles content accumulation is attached to filter fiber material surface, causes the decline of drafting efficiency, results in blockage when serious, even
Secondary pollution.As such, it is desirable to periodically more frequently replace strainer, the upper of air cleaning unit use cost is caused in this way
It rises.
Summary of the invention
In view of the above problems, it proposes the embodiment of the present invention and overcomes the above problem or at least partly in order to provide one kind
A kind of air purifying filter core to solve the above problems and a kind of air purifying filter core preparation method.
To solve the above-mentioned problems, the embodiment of the invention discloses a kind of air purifying filter core, the filter core includes filter core
Substrate and coated in the super-hydrophobic nano coating in filter core substrate surface and hole；
The super-hydrophobic nano coating includes fluorine-carbon modified polyacrylic resin, mixing fluorochemical monomer, polyurethane tree
The mixture of rouge and nanoparticle.
Further, the filter core substrate is made of the material of fibrous reticular structure；
Be made the filter core substrate material include: polyester fiber, glass fibre, non-woven fabrics, polypropylene paper, glass fiber paper,
Or one of polypropylene and polycarbonate composite material.
Further, polyacrylic resin fluorine-carbon modified in the super-hydrophobic nano coating with mix with fluorochemical monomer
Mass ratio is 9:1-7:3.
Further, the fluorine-carbon modified polyacrylic resin is by fluorine monomer hexafluorobutyl acrylate, methacrylic acid six
One of fluorine butyl ester, dodecafluorhe-ptylacrylate a variety of carry out reacting acquisition with acrylic monomer.
Further, the mixing fluorochemical monomer includes one of perfluoro decane, perfluoroalkyl amine, perfluoroalkyl acid
Or it is a variety of.
Further, nanoparticle mass ratio shared in super-hydrophobic nano coating is less than 2%；
The nanoparticle includes one of titanium dioxide, silica, aluminium oxide or a variety of.
Further, polyurethane resin mass ratio shared in super-hydrophobic nano coating includes 5%-10%.
The embodiment of the invention also discloses a kind of preparation methods of air purifying filter core, which comprises
Super-hydrophobic nano coating is coated in filter core substrate surface and hole by impregnation method or spraying method；
Wherein, the spraying method is the mode that back side negative pressure is combined with front spraying.
Further, the impregnation method includes:
The filter core substrate is immersed in the super-hydrophobic nano coating and is kept for 1-2 minutes；
The filter core substrate for being saturated with super-hydrophobic nano coating is taken out from super-hydrophobic nano coating, and 30-60 minutes static.
Further, the back side negative pressure pressure range is 0.36-0.365kg/cm3.
The embodiment of the present invention includes following advantages:
Air purifying filter core of the present invention, due to the ultra-hydrophobicity of material surface, so that particulate matter and bacterial disease
Poison is not easy to adhere to, and effectively reduces air purification efficiency with the performance degradation speed used.
The method that air purifying filter core is prepared in the present invention is simple and convenient, is suitable for different filter material matrix, by certain
Coating processes assign air purifying filter core ultra-hydrophobicity, can repeat to wash, empty improving convenient for cleaning filter screen in time
While gas purification efficiency, maintenance cost is reduced.
The mode of negative pressure spraying of the present invention, can effectively solve super hydrophobic material spraying unevenly, not deeply
Limitation, simultaneously, it is possible to reduce the spraying dosage of material.
Air purifying filter core is prepared in the present invention, super-hydrophobic coat is firmly combined with strainer substrate, and water-fast flushing uses the longevity
Life length.
Air filtering core is prepared in the present invention, repeats washing repeatedly, clean-up effect is not obviously decayed.
Detailed description of the invention
Fig. 1 is a kind of preparation method flow chart of air purifying filter core in the embodiment of the present invention；
Fig. 2 is the method flow diagram for preparing air purifying filter core in the embodiment of the present invention using impregnation method.
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real
Applying mode, the present invention is described in further detail.
One embodiment of the present of invention discloses a kind of air purifying filter core, and the filter core includes filter core substrate and is coated in
Super-hydrophobic nano coating in filter core substrate surface and gap；
The super-hydrophobic nano coating includes fluorine-carbon modified polyacrylic resin, mixing fluorochemical monomer, polyurethane tree
The mixture of rouge and nanoparticle.
In the present embodiment, the filter core substrate surface of the air purifier and internal coat have super-hydrophobic nano coating, make
The filter core substrate surface of air purifier and it is internal form super-hydrophobic coat, thus reach PM2.5 or other particulate matters be not easy it is attached
Characteristic, and make the filter core substrate that can reach the technology effect that the filter core substrate can recycle with repeated washing
Fruit.
Further, the filter core substrate is made of the material of fibrous reticular structure；
Be made the filter core substrate material include: polyester fiber, glass fibre, non-woven fabrics, polypropylene paper, glass fiber paper,
Or one of polypropylene and polycarbonate composite material.
In the present embodiment, the material that the filter core substrate is made is the material with reticular fiber structure, can be filtered out
Most of particulate matter in air.
Further, polyacrylic resin fluorine-carbon modified in the super-hydrophobic nano coating with mix with fluorochemical monomer
Mass ratio is 9:1-7:3；
The fluorine-carbon modified polyacrylic resin is by fluorine monomer hexafluorobutyl acrylate, Hexafluorobutyl mathacrylate, third
One of ten difluoro heptyl ester of olefin(e) acid a variety of carries out reacting acquisition with acrylic monomer；
The mixing fluorochemical monomer includes one of perfluoro decane, perfluoroalkyl amine, perfluoroalkyl acid or a variety of.
In the present embodiment, the fluorine-carbon modified polyacrylic resin with mix with fluorochemical monomer carry out mixing can reduce
The viscosity of fluorine-carbon modified polyacrylic resin, in order to avoid blocking filter core substrate；And mixing is added into super-hydrophobic nano coating
The adhesive force that coating can be increased with fluorochemical monomer increases the bonding force of fluorine-carbon modified polyacrylic resin.
Further, nanoparticle mass ratio shared in super-hydrophobic nano coating is less than 2%；
The nanoparticle includes one of titanium dioxide, silica, aluminium oxide or a variety of.
In the present embodiment, nanoparticle is added into super-hydrophobic nano coating and is capable of forming micro-nano structure, enhances hydrophobicity
Can, but the viscosity of the increase coating has been added, the percentage of nanoparticle quality is obtained below 2% by test of many times
It is proper.
Further, polyurethane mass ratio shared in super-hydrophobic nano coating includes 5%-10%.
In the present embodiment, the polyurethane has preferable water resistance, is cleaning repeatedly to improve super-hydrophobic nano coating
Bond strength in the process, it is accordingly required in particular to a certain proportion of polyurethane be added, increase the water resistance of the coating and in filter core
Adhesive force on substrate, but the polyurethane of excessive addition will affect the hydrophobicity of the coating, the mass ratio of addition is in 5%-
It can guarantee the water resistance of the nano paint in 10% range, and will not influence the hydrophobicity of nano paint.
Further, the super-hydrophobic nano coating is also added with one of dimethylbenzene, acetone or n-hexane or more
Kind, it is maintained between 50-200cP for controlling the super-hydrophobic nano viscosity of the coating range.
In the present embodiment, when making the filter core at the scene, need that dimethylbenzene, third is added in the super-hydrophobic nano coating
One of ketone or n-hexane or it is a variety of control the viscosity of the coating, to improve the coverage rate and leaching of the coating
Profit rate is obtained by test of many times and the super-hydrophobic nano viscosity of the coating range is maintained between 50-200cP and can be closed
Suitable coverage rate and infiltration rate.
Air purifying filter core manufactured in the present embodiment, super-hydrophobic coat are firmly combined with strainer substrate, water-fast flushing, are used
Service life is long.
The present embodiment uses GB/T 1733-93 paint film water resistance measuring method, and coating water-fast service life on substrate is more than
170h。
Air filtering core is prepared in the present embodiment, repeat washing repeatedly, clean-up effect is not obviously decayed, windage rise compared with
It is few.
The present embodiment is to the air purifying filter core having a size of 343mmX265mmX50mm, after coating treatment, repeatedly into
Row fugitive dust (based on PM2.5), cleaning, dry process, by 10 times, its purification efficiency and windage under the conditions of 300m3/h air quantity
Data record is as shown in table 1:
Table 1
With reference to Fig. 1, the embodiment of the invention also discloses a kind of preparation methods of air purifying filter core, which comprises
Step 101, super-hydrophobic nano coating is coated on filter core substrate surface by impregnation method or spraying method.
Further, with reference to Fig. 2, the impregnation method includes:
Step 201, the filter core substrate is immersed in the super-hydrophobic nano coating and is kept for 1-2 minutes；
Step 202, the filter core substrate for being saturated with super-hydrophobic nano coating is taken out from super-hydrophobic nano coating, and static
30-60 minutes.
In the present embodiment, entire filter core substrate is immersed in the controllable nano superhydrophobic coating of above-mentioned viscosity 1-2 minutes,
Then it is lifted from coating solution, and stands 30-60 minutes, remove extra super hydrophobic coating.
Further, the spraying method carries out filter core substrate in such a way that back side negative pressure is combined with front spraying
Surface coating；
The back side negative pressure, the pressure range of negative pressure are 0.36-0.365kg/cm3.
In the present embodiment, surface coating is carried out to filter core substrate in such a way that back side negative pressure is combined with front spraying,
Be conducive to super-hydrophobic nano coating to enter in filter screen micron order hole, improve coating coated area, what super hydrophobic coating entered
Depth, and reduce the loss of the coating in spraying process.
In the present embodiment, the back side negative pressure is to be vacuumized in the other side of spraying by vacuum pump, and it is negative to give spraying
Pressure ring border, or negative-pressure air fan equal power device is utilized, the forward flow of air is formed, it, further will spray in front when spraying
The coating of painting enters strainer hole.While screen surface forms coating, coating also is formed in the fiber surface of hole.
Further, the spraying method carries out the spraying of another side after the completion of one side sprays.
It is specifically applied in example at one, the first step, by 9 parts of fluorine-carbon modified polyacrylic resins and 1 part of perfluoro decane and entirely
The fluorine monomer of fluoroalkyl amine combines, and is put into 10 parts of n-hexanes and is stirred mixing 10 minutes；Second step, by 0.05 part of SiO2 and
The nanoparticle mixture of TiO2, which is put into 10 parts of acetone, carries out ultrasonic wave dispersion 30 minutes, SiO2 and TiO2 mixed proportion is
2:7.Third step will be mixed in the hybrid resin that finely dispersed nanoparticulate fillers are poured slowly into the first step, be stirred
Mix mixing 10 minutes.3 parts of polyurethane resins and 0.5 part of isocyanates is added in 4th step in the mixture of above-mentioned third step
Curing agent is stirred mixing 30 minutes, forms the base-material of milky uniformly mixed super-hydrophobic nano coating.It is using
When, required according to the control of viscosity, add acetone, come adjust spraying super hydrophobic coating viscosity, viscosity finally controls
100cP, set aside for use.
Next, the air filtering core sprayed will be needed to be placed on negative pressure spray equipment, negative pressure is provided by negative-pressure air fan, is pressed
It is by force 0.36kg/cm3.Above-mentioned configured super-hydrophobic nano coating is poured into material spray pot.The bore of material spray pot is selected
0.6mm, spray pressure 0.1mpa.After even application 1 time, reconvert air filtering core sprays another side.
After the completion of spraying, super-hydrophobic air purifying filter core will be coated with and be put into 50 DEG C of baking ovens, taken within baking and curing 2 hours
Out.
In another specific embodiment, the first step, by 9 parts of fluorine-carbon modified polyacrylic resins and 1 part of perfluoro decane
It is combined with the fluorine monomer of perfluoroalkyl amine, is put into 10 parts of n-hexanes and is stirred mixing 10 minutes；Second step, by 0.05 part
The nanoparticle mixture of SiO2 and TiO2, which is put into 10 parts of acetone, carries out ultrasonic wave dispersion 30 minutes, SiO2 and TiO2 mixing
Ratio is 2:7.Third step will mix in the hybrid resin that finely dispersed nanoparticulate fillers are poured slowly into the first step,
It is stirred mixing 10 minutes.4th step is added 3 parts of polyurethane resins in the mixture of above-mentioned third step and 0.5 part different
Cyanate curing agent is stirred mixing 30 minutes, forms the base-material of milky uniformly mixed super-hydrophobic nano coating.?
In use, requiring according to the control of viscosity, add acetone, come adjust spraying super hydrophobic coating viscosity, viscosity finally controls
In 100cP, set aside for use.
Next, the air filtering core that sprays will be needed to rest in the super-hydrophobic nano coating of above-mentioned configuration 2 minutes, then
Filter core is lifted and is taken out, and stands 45 minutes, removes extra super-hydrophobic nano coating.Super-hydrophobic air cleaning will be coated with
Filter core is put into 50 DEG C of baking ovens, takes out within baking and curing 2 hours.
The method of washable, the Ke Xunhuanliyong air purifying filter core prepared in the present embodiment is simple and convenient, is suitable for
Different filter material matrix assign air purifying filter core ultra-hydrophobicity by certain coating processes, can repeat to wash, be convenient for
Cleaning filter screen in time reduces maintenance cost while improving air purification efficiency.
The mode of the spraying of negative pressure used by the present embodiment can effectively solve super hydrophobic material spraying unevenly, not deep
The limitation entered, simultaneously, it is possible to reduce the spraying dosage of material.
The air purifying filter core prepared in the present embodiment, due to the ultra-hydrophobicity of material surface, so that particulate matter and thin
Bacterium virus is not easy to adhere to, and effectively reduces air purification efficiency with the performance degradation speed used.
Although the preferred embodiment of the embodiment of the present invention has been described, once a person skilled in the art knows bases
This creative concept, then additional changes and modifications can be made to these embodiments.So the following claims are intended to be interpreted as
Including preferred embodiment and fall into all change and modification of range of embodiment of the invention.
Finally, it is to be noted that, herein, relational terms such as first and second and the like be used merely to by
One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant meaning
Covering non-exclusive inclusion, so that process, method, article or terminal device including a series of elements not only wrap
Those elements are included, but also including other elements that are not explicitly listed, or further includes for this process, method, article
Or the element that terminal device is intrinsic.In the absence of more restrictions, being wanted by what sentence "including a ..." limited
Element, it is not excluded that there is also other identical elements in process, method, article or the terminal device for including the element.
Above to a kind of air purifying filter core provided by the present invention and a kind of air purifying filter core preparation method, carry out
It is discussed in detail, used herein a specific example illustrates the principle and implementation of the invention, above embodiments
Illustrate to be merely used to help understand method and its core concept of the invention；At the same time, for those skilled in the art, according to
According to thought of the invention, there will be changes in the specific implementation manner and application range, in conclusion the content of the present specification
It should not be construed as limiting the invention.
Claims (10)
1. a kind of air purifying filter core, which is characterized in that the filter core include filter core substrate and coated in filter core substrate surface and
Super-hydrophobic nano coating in hole；
The super-hydrophobic nano coating be include fluorine-carbon modified polyacrylic resin, mixing fluorochemical monomer, polyurethane resin
With the mixture of nanoparticle.
2. filter core according to claim 1, which is characterized in that be made the filter core substrate material include polyester fiber,
One of glass fibre, non-woven fabrics, polypropylene paper, glass fiber paper, polypropylene and polycarbonate composite material.
3. filter core according to claim 1, which is characterized in that fluorine-carbon modified polypropylene in the super-hydrophobic nano coating
Acid resin with mix the mass ratio with fluorochemical monomer between 9:1-7:3.
4. filter core according to claim 1, which is characterized in that the fluorine-carbon modified polyacrylic resin is by fluorine monomer third
One of olefin(e) acid hexafluoro butyl ester, Hexafluorobutyl mathacrylate, dodecafluorhe-ptylacrylate or a variety of and acrylic monomer
Carry out reaction acquisition.
5. filter core according to claim 1, which is characterized in that the mixing fluorochemical monomer includes perfluoro decane, perfluor
One of alkylamine, perfluoroalkyl acid are a variety of.
6. filter core according to claim 1, which is characterized in that the nanoparticle is shared in super-hydrophobic nano coating
Mass ratio is less than 2%；
The nanoparticle includes one of titanium dioxide, silica, aluminium oxide or a variety of.
7. filter core according to claim 1, which is characterized in that the polyurethane resin is shared in super-hydrophobic nano coating
Mass ratio between 5%-10%.
8. a kind of preparation method of air purifying filter core, which is characterized in that the described method includes:
Super-hydrophobic nano coating is coated in filter core substrate surface and hole by impregnation method or spraying method；
Wherein, the spraying method is the mode that back side negative pressure is combined with front spraying.
9. according to the method described in claim 8, it is characterized in that, the impregnation method includes:
The filter core substrate is immersed in the super-hydrophobic nano coating and is kept for 1-2 minutes；
The filter core substrate for being saturated with super-hydrophobic nano coating is taken out from super-hydrophobic nano coating, and 30-60 minutes static.
10. according to the method described in claim 8, it is characterized in that, the back side negative pressure pressure range is 0.36-
0.365kg/cm3。
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Cited By (2)
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| CN111135789A (en) * | 2019-12-13 | 2020-05-12 | 上海勇意环境工程有限公司 | 360-degree flexible air purification material and preparation method thereof |
| CN114712940A (en) * | 2022-03-22 | 2022-07-08 | 南通康净环保科技有限公司 | Air purification filter element material and preparation process thereof |
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| CN110180260B (en) | 2021-12-10 |
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