CN110141901B - Filter screen with oxidation resistance - Google Patents
Filter screen with oxidation resistance Download PDFInfo
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- CN110141901B CN110141901B CN201910406468.3A CN201910406468A CN110141901B CN 110141901 B CN110141901 B CN 110141901B CN 201910406468 A CN201910406468 A CN 201910406468A CN 110141901 B CN110141901 B CN 110141901B
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- filter screen
- functional layer
- coating
- oxidation
- nano
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- 230000003647 oxidation Effects 0.000 title claims abstract description 33
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 33
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 73
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 claims abstract description 62
- 239000002346 layers by function Substances 0.000 claims abstract description 50
- 238000000576 coating method Methods 0.000 claims abstract description 43
- 239000011248 coating agent Substances 0.000 claims abstract description 42
- 239000005543 nano-size silicon particle Substances 0.000 claims abstract description 33
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 33
- 239000000758 substrate Substances 0.000 claims abstract description 17
- 230000003064 anti-oxidating effect Effects 0.000 claims abstract description 15
- 239000007788 liquid Substances 0.000 claims abstract description 10
- 229920002101 Chitin Polymers 0.000 claims abstract description 8
- 229920001661 Chitosan Polymers 0.000 claims description 13
- 239000004033 plastic Substances 0.000 claims description 11
- 229920002472 Starch Polymers 0.000 claims description 10
- 235000019698 starch Nutrition 0.000 claims description 10
- 239000008107 starch Substances 0.000 claims description 10
- 239000000377 silicon dioxide Substances 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 7
- 230000032683 aging Effects 0.000 abstract description 5
- 239000011159 matrix material Substances 0.000 abstract description 5
- 238000000746 purification Methods 0.000 abstract description 5
- 230000001954 sterilising effect Effects 0.000 abstract description 5
- 238000004659 sterilization and disinfection Methods 0.000 abstract description 5
- 239000002245 particle Substances 0.000 description 13
- 239000000243 solution Substances 0.000 description 11
- 239000010410 layer Substances 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000004743 Polypropylene Substances 0.000 description 4
- 230000000844 anti-bacterial effect Effects 0.000 description 3
- 241000219095 Vitis Species 0.000 description 2
- 235000009754 Vitis X bourquina Nutrition 0.000 description 2
- 235000012333 Vitis X labruscana Nutrition 0.000 description 2
- 235000014787 Vitis vinifera Nutrition 0.000 description 2
- 230000003712 anti-aging effect Effects 0.000 description 2
- 230000006196 deacetylation Effects 0.000 description 2
- 238000003381 deacetylation reaction Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 241000233866 Fungi Species 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 230000003115 biocidal effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
-
- 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
- B01D46/0028—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions provided with antibacterial or antifungal means
-
- 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
-
- 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
-
- 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
- B01D2239/12—Special parameters characterising the filtering material
- B01D2239/1291—Other parameters
Abstract
The invention relates to the field of materials, and relates to a filter screen with oxidation resistance, which comprises a filter screen substrate and an oxidation-resistant coating; the anti-oxidation coating is coated on the surface of the filter screen matrix and consists of a first functional layer and a second functional layer which are sequentially arranged on the filter screen matrix, the first functional layer is formed by coating deacetylated chitin solution, the coating liquid of the second functional layer mainly comprises nano silicon dioxide and nano manganese dioxide, and the thickness of the anti-oxidation coating is 0.01-0.5 mm. The filter screen provided by the invention has good ageing and damage resistance, and is waterproof, sterilization and NO purification2And O3。
Description
Technical Field
The invention relates to the field of materials, belongs to the technical field of environment-friendly material equipment, and particularly relates to a filter screen with oxidation resistance.
Background
In recent years, with the development of industry, economy is prosperous, corresponding air pollution is more serious, the use of air purifiers such as air purifiers and fresh air purifiers is more and more popular, and the high-efficiency filter screen widely used in the air purifiers is a high-efficiency air filter, namely HEPA, such as the high-efficiency filter screen disclosed in 2018, 8 and 7 days with the publication number of CN108371854A, the HEPA has a high-efficiency sterilization effect and high-efficiency adsorption capacity for PM2.5 and formaldehyde, but the HEPA can age, embrittle and fall off after being used for a period of time, so that the service life and the effect of the HEPA are influenced.
Silica is chemically stable, is generally used as a raw material for manufacturing important parts of glass, quartz glass, water glass, optical fibers, electronic industry, optical instruments, artware and refractory materials, is an important material for scientific research, and can withstand the properties of temperature change, acid resistance, oxidation resistance and the like.
Deacetylated chitin is obtained by deacetylation of chitin (chitin) widely existing in nature. The antibacterial film has the advantages of biodegradability, antibacterial property, film-forming property and the like, and is widely applied to various fields of medicines, foods, chemical industry and the like.
Disclosure of Invention
The invention aims to solve the defects of the prior art, and provides a filter screen with oxidation resistance, which effectively solves the problem of aging and damage of the filter screen, and has the functions of water prevention, sterilization and NO purification2And O3。
The technical scheme adopted by the invention is as follows:
a filter screen with oxidation resistance comprises a filter screen substrate and an oxidation resistant coating; the anti-oxidation coating is coated on the surface of the filter screen matrix and consists of a first functional layer and a second functional layer which are sequentially arranged on the filter screen matrix, the first functional layer is formed by coating deacetylated chitin solution, the coating liquid of the second functional layer mainly comprises nano silicon dioxide and nano manganese dioxide, and the thickness of the anti-oxidation coating is 0.01-0.5 mm.
In the scheme, two layers of coatings are coated on the surface of the filter screen substrate, one layer adopts the chitosan layer, so that the antibacterial property of the filter screen is favorably improved, the other layer adopts the mixed liquid of nano silicon dioxide and nano manganese dioxide, so that the anti-aging performance is improved, and the combined oxidation resisting layer can also improve the purification effect of the filter screen on NO2And O3The ability of the cell to perform.
Although the order of first functional layer and second functional layer can both bring antibiotic, ageing resistance's effect, the applicant finds that first coating second functional layer on the filter screen base member, scribble first functional layer again, and the whole oxidation resisting layer of filter screen easily drops, fragile to lose the function. This drawback is due to the sequence of the two functional layers, which is very strong after the implementation of the solution of the present application.
Further preferably, the thickness of the anti-oxidation coating is 0.1-0.3 mm.
Still further preferably, the thickness of the oxidation resistant coating is 0.1 mm.
Preferably, the material of the filter screen base body is one or a combination of more of PP (polypropylene), PET (polyester resin), chemical fiber cloth, non-woven fabric, linen and nylon cloth.
Further preferably, the material of the filter screen base is pp (polypropylene).
Preferably, the particle size of the nano silicon dioxide is 10-500 nm.
Further preferably, the particle size of the nano silicon dioxide is 10-100 nm.
Preferably, the nano manganese dioxide has a particle size of 10 to 500 nm.
More preferably, the particle size of the nano manganese dioxide is 10-100 nm.
Preferably, the mass ratio of the chitosan to the nano silicon dioxide and the nano manganese dioxide is 5: 1-1: 1, and the mass ratio of the chitosan to the mixed particles of the nano silicon dioxide and the nano manganese dioxide is preferably 2: 1-1: 1.
Preferably, the component of the second functional layer comprises nano silicon dioxide, nano manganese dioxide and starch-based plastic.
In the using process of the second functional layer, local falling can occur when the second functional layer is used for a long time (generally, the using time is more than one month), and the local falling can not occur after the formula is adopted through improving the components.
Furthermore, the mass ratio of the nano silicon dioxide to the nano manganese dioxide is 2: 1-1: 1.
Further preferably, the mass ratio of the nano silicon dioxide to the nano manganese dioxide to the starch-based plastic is 2: 1: 0.5-1: 1: 0.5.
Preferably, the thickness of the first functional layer is 0.05 to 0.1 mm.
Preferably, the thickness of the second functional layer is 0.05 to 0.1 mm.
Preferably, the mass concentration of the chitosan deacetylation solution is 10-45%.
Preferably, the mass concentration of the nano silicon dioxide is 25-30%.
Preferably, the mass concentration of the nano manganese dioxide is 10 to 20% lower than that of the nano silicon dioxide.
The applicant found that when the filter screen base material is pp, the mass concentration of the nano-silica and the nano-manganese dioxide is within the above range, and the mass concentration of the nano-manganese dioxide is lower than that of the nano-silica, the toughness of the filter screen is increased, and the anti-aging performance is better.
Through the implementation of the technical scheme, the invention has the following advantages: the filter screen provided by the invention has good ageing and damage resistance, and is waterproof, sterilization and NO purification2And O3。
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1:
a filter screen with oxidation resistance comprises a filter screen base body and an oxidation resistant layer (comprising a first functional layer and a second functional layer which are sequentially coated on the filter screen base body). The filter screen substrate adopts pp filter paper, the H13 grade, the first functional layer is obtained by coating deacetylated chitin solution, the coating thickness of the deacetylated chitin is 0.2mm, the second functional layer is obtained by coating mixed solution of nano silicon dioxide and nano manganese dioxide, and the coating thickness is 0.3 mm. The mass ratio of the chitosan to the mixture of the nano silicon dioxide and the nano manganese dioxide is 1:1, the mass ratio of the nano silicon dioxide to the nano manganese dioxide is 1:1, the nano silicon dioxide is VK-sp15, the particle size of the nano silicon dioxide is 15nm, the particle size of the nano manganese dioxide is 30-50 nm, and the compounded filter screen is made into a wave shape and is applied to products such as an air purifier, a fresh air system, an air conditioner and the like.
The filter screen is used in air purifier at 30m3In the room of (1), measuring it for NO2、O3The initial concentration of white grape bacteria is respectively 8.4mg/m3，11.36mg/m3，5.6*10^4 cfu/m3And NO is measured after one hour2、O3The white grape fungus concentration is 0.11 mg/m3，0.098mg/m3，9 cfu/m3The removal rates were 99.14%, 98.69%, and 99.98%, respectively.
Example 2:
a filter screen with oxidation resistance comprises a filter screen substrate and an oxidation resistant coating; the anti-oxidation coating is coated on the surface of the filter screen substrate, the filter screen substrate is made of PET, the anti-oxidation coating is composed of a first functional layer and a second functional layer, the first functional layer is coated by a chitosan solution, the thickness of the first functional layer is 0.05nm, and the mass concentration of the chitosan solution is 45%. The coating liquid of the second functional layer comprises nano silicon dioxide, nano manganese dioxide and starch-based plastic, and the coating thickness is 0.95 nm. The particle size of the nano silicon dioxide is 450-500 nm, and the mass concentration is 25%; the particle size of the nano manganese dioxide is 100-150 nm, the mass concentration is 20%, and in the coating liquid, the mass ratio of the nano silicon dioxide to the nano manganese dioxide to the starch-based plastic is 2: 1: 0.5.
example 3:
a filter screen with oxidation resistance comprises a filter screen substrate and an oxidation resistant coating; the anti-oxidation coating is coated on the surface of the filter screen substrate, the filter screen substrate is made of PET, the anti-oxidation coating is composed of a first functional layer and a second functional layer, the first functional layer is coated by a chitosan solution, the thickness of the first functional layer is 0.1nm, and the mass concentration of the chitosan solution is 10%. The coating liquid of the second functional layer comprises nano silicon dioxide, nano manganese dioxide and starch-based plastic, and the coating thickness is 0.2 nm. The particle size of the nano silicon dioxide is 50-100 nm, and the mass concentration is 30%; the particle size of the nano manganese dioxide is 350-400 nm, the mass concentration is 10%, and in the coating liquid, the mass ratio of the nano silicon dioxide to the nano manganese dioxide to the starch-based plastic is 1: 0.5.
example 4:
a filter screen with oxidation resistance comprises a filter screen substrate and an oxidation resistant coating; the anti-oxidation coating is coated on the surface of the filter screen substrate, the filter screen substrate is made of PET, the anti-oxidation coating is composed of a first functional layer and a second functional layer, the first functional layer is coated by a chitosan solution, the thickness of the first functional layer is 0.15nm, and the mass concentration of the chitosan solution is 30%. The coating liquid of the second functional layer comprises nano silicon dioxide, nano manganese dioxide and starch-based plastic, and the coating thickness is 0.05 nm. The particle size of the nano silicon dioxide is 250-300 nm, and the mass concentration is 25 percent; the particle size of the nano manganese dioxide is 10-15 nm, the mass concentration is 15%, and in the coating liquid, the mass ratio of the nano silicon dioxide to the nano manganese dioxide to the starch-based plastic is 2: 1: 0.5.
comparative example 1:
a filter screen is not coated with any anti-oxidation coating, and a filter screen matrix adopts PP.
Comparative example 2:
a filter screen having oxidation resistance is different from example 1 in that the second functional layer is not coated.
Comparative example 3:
a filter web having oxidation resistance, which differs from example 1 in that the first functional layer and the second functional layer are applied in the reverse order, i.e., the second functional layer is applied to the filter web substrate first, and then the first functional layer is applied to the second functional layer.
Comparative example 4:
a filter screen with oxidation resistance, which is different from the filter screen in the embodiment 2 in that the mass concentration of the nano silicon dioxide grain diameter is 20 percent; the mass concentration of the nano manganese dioxide is 30 percent.
The filter screens obtained in examples 1 to 4 and comparative examples 1 to 4 were subjected to the correlation performance test, and the test results are shown in tables 1 and 2.
And (3) detecting the ageing resistance: reference is made to a GB9344-88 plastic xenon lamp light source exposure test method.
Sterilization and purification of NO2And O3And (3) effect detection: reference is made to the process described in example 1.
And (3) detecting the falling condition of the oxidation resisting layer: the filter screen is exposed to the sun for 60 days, and then the surface shedding area of the filter screen is observed.
It should be noted that the above examples are only specific embodiments of the present invention. It is obvious that the invention is not limited to the above embodiments, but that many variations are possible. All modifications which can be derived or suggested by a person skilled in the art from the disclosure of the present invention are to be considered within the scope of the invention.
Claims (8)
1. A filter screen with oxidation resistance comprises a filter screen substrate and an oxidation resistant coating; the anti-oxidation coating is coated on the surface of a filter screen substrate and is characterized in that the anti-oxidation coating is composed of a first functional layer and a second functional layer which are sequentially arranged on the filter screen substrate, the first functional layer is formed by coating deacetylated chitin solution, coating liquid of the second functional layer mainly comprises nano silicon dioxide and nano manganese dioxide, the thickness of the anti-oxidation coating is 0.01-0.5 mm, the mass concentration of the nano silicon dioxide is 25-30%, and the mass concentration of the nano manganese dioxide is 10-20% lower than that of the nano silicon dioxide.
2. The filter screen with the oxidation resistance as recited in claim 1, wherein the mass ratio of the chitosan deacetylate to the nano silica is 5: 1-1: 1.
3. The filter screen with oxidation resistance as recited in claim 1, wherein the second functional layer comprises nano silicon dioxide, nano manganese dioxide, and starch-based plastic.
4. The filter screen with the oxidation resistance according to claim 1, wherein the mass ratio of the nano silicon dioxide to the nano manganese dioxide is 2: 1-1: 1.
5. The filter screen with the oxidation resistance as recited in claim 3, wherein the mass ratio of the nano silicon dioxide, the nano manganese dioxide and the starch-based plastic is 2: 1: 0.5-1: 1: 0.5.
6. The filter screen with the oxidation resistance as recited in claim 1, wherein the thickness of the first functional layer is 0.05 mm to 0.1 mm.
7. The filter screen with the oxidation resistance as recited in claim 1, wherein the thickness of the second functional layer is 0.05-0.1 mm.
8. The filtering net with oxidation resistance as set forth in claim 1, wherein the mass concentration of the chitosan solution is 10-45%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910406468.3A CN110141901B (en) | 2019-05-15 | 2019-05-15 | Filter screen with oxidation resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910406468.3A CN110141901B (en) | 2019-05-15 | 2019-05-15 | Filter screen with oxidation resistance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110141901A CN110141901A (en) | 2019-08-20 |
| CN110141901B true CN110141901B (en) | 2021-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910406468.3A Active CN110141901B (en) | 2019-05-15 | 2019-05-15 | Filter screen with oxidation resistance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110141901B (en) |
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| JPH05306614A (en) * | 1992-04-28 | 1993-11-19 | Matsushita Electric Ind Co Ltd | Exhaust gas filter and manufacture thereof |
| KR20050049897A (en) * | 2003-11-24 | 2005-05-27 | 주식회사 대우일렉트로닉스 | Filter having function of deodorization and oxidation prevention |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0223022A2 (en) * | 1985-11-13 | 1987-05-27 | MAN Technologie Aktiengesellschaft | Method for making soot filters |
| CN1351518A (en) * | 1999-04-23 | 2002-05-29 | 罗狄亚化学公司 | Composition usable as NOx trap, based on manganese and an alkaline-earth or a rare earth and use in the treatment of exhaust gases |
| CN1485123A (en) * | 2002-09-27 | 2004-03-31 | 刘明前 | Nanometer order quartz molecule sieve filter element and the exact filtering waterer equipped with the filter element |
| CN1734192A (en) * | 2004-08-09 | 2006-02-15 | 乐金电子(天津)电器有限公司 | Air cleaner |
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| Publication number | Publication date |
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| CN110141901A (en) | 2019-08-20 |
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