CN104689708B - One removes formaldehyde air purifying filter core and preparation method thereof based on inclined hole aluminum honeycomb panel - Google Patents
One removes formaldehyde air purifying filter core and preparation method thereof based on inclined hole aluminum honeycomb panel Download PDFInfo
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- CN104689708B CN104689708B CN201510122475.2A CN201510122475A CN104689708B CN 104689708 B CN104689708 B CN 104689708B CN 201510122475 A CN201510122475 A CN 201510122475A CN 104689708 B CN104689708 B CN 104689708B
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Abstract
The invention discloses one based on inclined hole aluminum honeycomb panel except formaldehyde air purifying filter core, including except formaldehyde coating and aluminum honeycomb panel, the plate body that described aluminum honeycomb panel is made up of hexagon duct, and hexagon duct and plate body front vertical angular separation be 5 20 degree；Described prepared by except methanal paint is coated in hexagon inner surfaces of pores dry solidification except formaldehyde coating, described except methanal paint be mixture, this constituents of a mixture includes activated carbon, calper calcium peroxide, calcium oxide, manganese dioxide, potassium carbonate, adhesive.And disclose the preparation method of the present invention.What the present invention provided reaches 93% based on aluminum honeycomb panel except formaldehyde air purifying filter core can realize 2.5 minutes formaldehyde clearances, and within 10 minutes, formaldehyde in air clearance reaches 100%, and windage relatively graininess declines 98% except formaldehyde inserts.The present invention has the features such as purifying formaldehyde efficiency is high, high temperature resistant, air drag is little, corrosion-resistant, length in service life.
Description
Technical field
The present invention relates to a kind of design except formaldehyde air purifying filter core, preparation method.This filter element may be used for various air purifier, air-conditioning and VMC (Ventilation Mechanical Control System).
Background technology
The time of modern more than 90% is movable in indoor or car.In the confined space, the seriously polluted health endangering modern of volatile organic matter (VOD).Formaldehyde pollution pollutes as main VOD, in widespread attention.The source of formaldehyde is more complicated, mainly includes urea aldehyde/phenolic resin wood-based plate or containing the plywood of formaldehyde, core-board, medium density fibre board (MDF) and particieboard, composite floor board；Containing the ornament materials of formaldehyde, such as wallpaper, coating, adhesive；Manufacture process uses formaldehyde, and may have the textile fabric of residual, dyestuff, cleaning agent etc..
Formaldehyde, due to its chemism, can directly destroy protein and biomolecular structure, cause many health effects to human body.Long contact time low concentration formaldehyde can cause the discomfort of respiratory system, causes chronic respiratory tract disease, improves kinds cancer, such as the sickness rate of nasopharyngeal carcinoma, colon cancer etc..The formaldehyde of high concentration even can cause neural disease.Anemia of pregnant woman, child and old people belong to the crowd the most easily affected by formaldehyde.Such as anemia of pregnant woman lives for a long time in the environment of formaldehyde, and easily induction newborn teratogenesis and brains are grown slowly, even cause miscarriage.
Concentration of formaldehyde in China's " Indoor Air Quality standards " clear stipulaties room that national quality supervision and inspection Quarantine Bureau, State Environmental Protection Administration, Ministry of Public Health are formulated must not exceed 0.1 milligram/cubic metre.In places such as newly-decorated room, offices, the situation of formaldehyde is the most common.And the release that formaldehyde is from finishing material is a process slowly, as long as its release phase is up to 3-15.Therefore by different purifiers, remove Formaldehyde Pollution of Indoor Air such as air purifier, air conditioning system or VMC (Ventilation Mechanical Control System) and become the important selection of modern house.
Techniques for Indoor Air Purification mainly includes three classes at present.The first kind is to carry out physical absorption by porous materials such as activated carbon, potter's clay, molecular sieves.But generally adsorbance is limited, when temperature and humidity changes, also can cause desorption.By photocatalysis or plasma, anion technology catalysis oxidation during Equations of The Second Kind.But generally these methods remove the speed of formaldehyde relatively slowly, and cannot thoroughly remove.3rd class is to carry out direct oxidation by the PARA FORMALDEHYDE PRILLS(91,95) such as potassium permanganate, calper calcium peroxide, thus reaches to remove the purpose of formaldehyde.The usual response speed of this kind of method is fast, and clearance is high.Remove formaldehyde based on oxidizing process and be required to bigger oxidant load capacity.Its oxidant is with grade solid particle or is supported on other grade carrier (such as activated carbon, potter's clay, aluminum oxide molecular sieve etc.).But although this kind of design can ensure that higher formaldehyde removal efficiency, causes the biggest windage, wind is made an uproar the biggest.Particularly influence whether air purifier, air-conditioning and the discharge capacity of VMC (Ventilation Mechanical Control System) unit interval pure air.Particularly VMC (Ventilation Mechanical Control System), owing to its wind-force is less, the common obstruction easily causing its air channel except formaldehyde filter element, affect it and normally use.Therefore, development windage is little, purification efficiency is high novel except formaldehyde filter element be the most necessary.
Summary of the invention
Problem to be solved by this invention is, for above-mentioned shortcoming of the prior art, proposes innovation scheme, and a kind of one that can the most effectively remove formaldehyde in air removes formaldehyde air purifying filter core based on inclined hole aluminum honeycomb panel.
For solving the problems referred to above, the scheme that the present invention uses is as follows:
A kind of based on inclined hole aluminum honeycomb panel except formaldehyde air purifying filter core, including being 5-20 degree except formaldehyde coating and aluminum honeycomb panel, the plate body that described aluminum honeycomb panel is made up of hexagon duct, and hexagon duct and plate body front vertical angular separation；Described except formaldehyde coating be to be prepared by except methanal paint is coated in hexagon inner surfaces of pores dry solidification, described except methanal paint be mixture, this constituents of a mixture includes activated carbon, calper calcium peroxide, calcium oxide, manganese dioxide, potassium carbonate, adhesive.
Draw except methanal paint each composition activity charcoal, calper calcium peroxide, calcium oxide, manganese dioxide, potassium carbonate, the weight ratio proportion of adhesive are 1:(0.5-2 through experiment): (0.5-2): (0.01-0.2): (0.2-0.8): the efficiency removing formaldehyde in air when 0.5 is the highest.Especially load adhesive is preferably during acrylate better.
The plate body that aluminum honeycomb panel of the present invention is made up of hexagon duct, and hexagon duct and plate body front vertical angular separation are 5-20 degree, wherein the circumscribed circle diameter in hexagon duct is 0.6-2 millimeter, aluminum honeycomb panel thickness is 0.5-1.5 centimetre, when hexagon duct and plate body vertical direction angle preferably 10 degree, within 2.5 minutes, formaldehyde clearance can reach 93%, and within 10 minutes, formaldehyde clearance can reach 100%.The filter element windage of the present invention is the 1/50 of prior art filter element windage.And optimum balance can be reached by changing the angle of inclination in hexagon duct between windage and formaldehyde removal speed.
The present invention also provides for a kind of method removing formaldehyde air purifying filter core based on inclined hole aluminum honeycomb panel for preparation, this method solve except methanal paint on aluminum honeycomb panel efficient stable load technical barrier, diameter 1 millimeter, thickness 1 centimetre aluminum honeycomb on load capacity can reach 5 grams/cm.
A kind of preparation method removing formaldehyde air purifying filter core based on inclined hole aluminum honeycomb panel provided by the present invention, comprises the following steps:
First obtain mixture after being mixed with calper calcium peroxide, calcium oxide, potassium carbonate by activated carbon, be subsequently adding and the deionized water of the weight such as mixture, add adhesive and manganese dioxide, mixing, prepare except methanal paint, the particle diameter of described manganese dioxide is less than 1 micron；
To mix homogeneously prepared except methanal paint mixed liquor according to the ratio of 1:0.5-1:2 with water except methanal paint, being immersed by aluminum honeycomb panel should be except in methanal paint mixed liquor, after covering uniformly, the remnants blocking hexagon duct are removed except methanal paint mixed liquor by aerator, then being loaded with drying except the aluminum honeycomb panel of methanal paint mixed liquor, make except methanal paint mixed liquor curing molding is except formaldehyde coating, naturally cool to room temperature, the plate body that described aluminum honeycomb panel is made up of hexagon duct, and hexagon duct and plate body surface vertical direction angle are 5-20 degree.
The present invention preferably by except methanal paint in water according to the ratio mix homogeneously of 1:1.
A kind of effect except each component of methanal paint used except formaldehyde air purifying filter core based on inclined hole aluminum honeycomb panel of the present invention is distinguished as follows: activated carbon increases the dried specific surface area of coating；Calper calcium peroxide is the main component of oxidation of formaldehyde；Manganese dioxide may utilize the oxygen in air and the dioxygen oxidation formaldehyde of calper calcium peroxide reaction generation as catalyst；Calcium oxide can remove excessive moisture, prevents deliquescence；Potassium carbonate can neutralize the formic acid of generation；Acrylate can improve coating adhesive force on aluminum honeycomb.
When preparation is except methanal paint, first activated carbon and calper calcium peroxide, calcium oxide, potassium carbonate must be first mixed to get mixture, be subsequently adding and the deionized water of the weight such as mixture, be eventually adding adhesive and manganese dioxide, mixing.Wherein the particle diameter of manganese dioxide is less than 1 micron.Must use immediately after mixing.
It is preferably 1:(0.5-2 except methanal paint each composition activity charcoal, calper calcium peroxide, calcium oxide, manganese dioxide, potassium carbonate, the weight ratio proportion of adhesive): (0.5-2): (0.01-0.2): (0.2-0.8): the efficiency removing formaldehyde in air when 0.5 is the highest.In particular by acrylate as better during adhesive.
Technical problem solved by the invention be to provide a kind of simple, efficiently, windage little except formaldehyde filter element, for air purifier, air-conditioning and VMC (Ventilation Mechanical Control System).For 10 cubic metres of confined spaces, its formaldehyde clearance can reach 93% in 2.5 minutes, can reach 100% in 10 minutes.
The present invention is except the composite of formaldehyde air purifying filter core based on inclined hole aluminum honeycomb.Its substrate as shown in figure, for cellular aluminium sheet.Its area load activated carbon, calper calcium peroxide, potassium carbonate etc. form except formaldehyde materials layer after, can be directly used for multiple air purifier, air-conditioning and VMC (Ventilation Mechanical Control System).Aluminum honeycomb can greatly reduce windage, and the design of inclined hole can increase air and except the contact area between formaldehyde coating and time of contact.The special attachment technique except formaldehyde coating can be avoided blocking aluminum honeycomb duct in process of production.The invention have the advantage that windage is little, speed is fast, efficiency is high, removal is thorough in formaldehyde removal.
Optimum inclined hole aluminum honeycomb substrate structure and optimum except methanal paint proportioning in the case of, 2.5 minutes formaldehyde clearances 93% can be reached, reach GB safety value, within 10 minutes, formaldehyde is removed completely.Windage relatively graininess declines 98% except formaldehyde filler mode simultaneously.
Use the present invention method can effectively solve the problem that except methanal paint on aluminum honeycomb panel efficient stable load technical barrier, diameter 1 millimeter, thickness 1 centimetre aluminum honeycomb on load capacity can reach 5 grams/cm.
Accompanying drawing explanation
Fig. 1: based on inclined hole aluminum honeycomb panel except formaldehyde air purifying filter core structural representation.
Fig. 2: except the scanning electron microscope diagram sheet of the microscopic appearance structure of formaldehyde coating.
Fig. 3: the present invention is compared with the prior art, matched group filter element chooses the filter element of new wind air purifier, wind speed is air outlet air speed value, measured by anemobiagraph, matched group and experimental group measure ten times respectively, with matched group meansigma methods normalization, the present invention is more than 50 times of matched group based on inclined hole aluminum honeycomb panel except the wind speed of formaldehyde air purifying filter core.
Detailed description of the invention
Below in conjunction with the accompanying drawings the present invention is described in further details.
In all of the embodiments illustrated, all using the aluminium base of long a width of 30 centimetres 20 centimetres except the used aluminum honeycomb panel of formaldehyde air purifying filter core based on inclined hole aluminum honeycomb panel, aluminum honeycomb panel thickness is 0.5-1.5 centimetre.The plate body that this aluminium base is made up of hexagon duct, and hexagon duct and plate body front vertical angular separation be 5-20 degree.Except each component of methanal paint includes activated carbon, calper calcium peroxide, calcium oxide, manganese dioxide, potassium carbonate, adhesive, except methanal paint is being coated in the hexagon inner surfaces of pores of aluminum honeycomb panel, it solidify to form except formaldehyde layer.
In test storehouse, place 1 new wind air purifier, use three set filter elements.Comparing for convenience, all filter elements all use removal PM2.5 special HEPA film.
All tests of the present invention the most at normal temperatures and pressures, i.e. 23 degrees Celsius, 1 atmospheric pressure, carry out in 10 cubic metres of test chambers, initial concentration of formaldehyde is between 0.07-0.15 milligram/cubic meter.Test air purifier used is new wind air purifier type, is highest wind velocity shelves during work.The measurement of concentration of formaldehyde uses PPM-400ST formaldehyde measurement instrument.
Filter element preparation process is as follows:
Step one: mixed active charcoal, calper calcium peroxide, calcium oxide and potassium carbonate, prepares mixture, adds deionized water, mixing with mixture weight 1:1, obtains mixing liquid；
Step 2: add manganese dioxide in mixing liquid；
Step 3: add acrylate, mixing in mixing liquid；
Step 4: above-mentioned steps gained is diluted except methanal paint deionized water 1:1, puts into aluminum honeycomb panel, impregnate 3-5 minute, till aluminum honeycomb panel surface is completely covered coating；
Step 5: use aerator blow away its surface and block the remnants in hexagon duct except methanal paint；
Step 6: toast 5 minutes at 160 degrees Celsius of baking ovens, solidification.
Other design parameter, see table except methanal paint proportioning and except effect of formaldehyde.
Except the formaldehyde removal effect of formaldehyde filter element under table one, different conditions of mixture ratios
Note: in formula, activated carbon, calper calcium peroxide, calcium oxide, manganese dioxide, the quality of potassium carbonate are configuration except usage amount during methanal paint rather than actual negative carrying capacity.Load capacity proportionally can be calculated by total load amount.
Claims (8)
1. one kind is removed formaldehyde air purifying filter core based on inclined hole aluminum honeycomb panel, including except formaldehyde coating and aluminum honeycomb panel, it is characterized in that, the plate body that described aluminum honeycomb panel is made up of hexagon duct, and hexagon duct is 5-20 degree with plate body front vertical angular separation；Described prepared by except methanal paint is coated in hexagon inner surfaces of pores dry solidification except formaldehyde coating, described except methanal paint be mixture, this constituents of a mixture includes activated carbon, calper calcium peroxide, calcium oxide, manganese dioxide, potassium carbonate, adhesive, described except methanal paint each component activated carbon, calper calcium peroxide, calcium oxide, manganese dioxide, potassium carbonate, the weight ratio proportion of adhesive be 1:(0.5-2): (0.5-2): (0.01-0.2): (0.2-0.8): 0.5.
2. remove formaldehyde air purifying filter core based on inclined hole aluminum honeycomb panel as claimed in claim 1, it is characterised in that described adhesive is acrylate.
3. remove formaldehyde air purifying filter core based on inclined hole aluminum honeycomb panel as claimed in claim 1, it is characterised in that the circumscribed circle diameter in the hexagon duct of described aluminum honeycomb panel is 0.6-2 millimeter, and described aluminum honeycomb panel thickness is 0.5-1.5 centimetre.
4. remove formaldehyde air purifying filter core based on inclined hole aluminum honeycomb panel as claimed in claim 3, it is characterised in that described hexagon duct and plate body front vertical angular separation are 10 degree.
5. remove the preparation method of formaldehyde air purifying filter core as claimed in claim 1 based on inclined hole aluminum honeycomb panel, it is characterised in that comprise the following steps:
First obtain mixture after being mixed with calper calcium peroxide, calcium oxide, potassium carbonate by activated carbon, be subsequently adding and the deionized water of the weight such as mixture, add adhesive and manganese dioxide, mixing, prepare except methanal paint, the particle diameter of described manganese dioxide is less than 1 micron；
To mix homogeneously prepared except methanal paint mixed liquor according to the ratio of 1:0.5-1:2 with water except methanal paint, being immersed by aluminum honeycomb panel should be except in methanal paint mixed liquor, after covering uniformly, the remnants blocking hexagon duct are removed except methanal paint mixed liquor by aerator, then being loaded with drying except the aluminum honeycomb panel of methanal paint mixed liquor, make except methanal paint mixed liquor curing molding is except formaldehyde coating, naturally cool to room temperature, the plate body that described aluminum honeycomb panel is made up of hexagon duct, and hexagon duct and plate body front vertical angular separation are 5-20 degree.
6. as claimed in claim 5 method, it is characterised in that described mix homogeneously according to the ratio of 1:1 with water except methanal paint.
7. method as claimed in claim 5, it is characterised in that the circumscribed circle diameter in the hexagon duct of described aluminum honeycomb panel is 0.6-2 millimeter, and described aluminum honeycomb panel thickness is 0.5-1.5 centimetre, and described hexagon duct and aluminum honeycomb panel front vertical angular separation are 5-20 degree.
8. method as claimed in claim 7, it is characterised in that described hexagon duct and aluminum honeycomb panel front vertical angular separation are 10 degree.
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| CN201510122475.2A CN104689708B (en) | 2015-03-20 | 2015-03-20 | One removes formaldehyde air purifying filter core and preparation method thereof based on inclined hole aluminum honeycomb panel |
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| CN201510122475.2A CN104689708B (en) | 2015-03-20 | 2015-03-20 | One removes formaldehyde air purifying filter core and preparation method thereof based on inclined hole aluminum honeycomb panel |
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| CN104689708B true CN104689708B (en) | 2016-08-24 |
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| CN106178923A (en) * | 2016-08-31 | 2016-12-07 | 南京大学 | A kind of nanometer calper calcium peroxide polymer matrix composites removing formaldehyde in air and preparation method thereof |
| CN107903666A (en) * | 2017-05-17 | 2018-04-13 | 南通美亚新型活性炭制品有限公司 | A kind of filter material is with removing aldehyde mildew resistant paint and preparation method |
| WO2019093173A1 (en) * | 2017-11-10 | 2019-05-16 | 東洋紡株式会社 | Filter |
| CN110613982B (en) * | 2018-06-19 | 2022-11-22 | 国家能源投资集团有限责任公司 | Filter assembly and method of making same |
| CN110860181A (en) * | 2018-08-28 | 2020-03-06 | 苏州三星电子有限公司 | Filter screen for removing formaldehyde and preparation method thereof |
| CN109621576A (en) * | 2018-10-26 | 2019-04-16 | 无锡风正科技有限公司 | A kind of inclined hole aluminium base honeycomb strainer |
| CN110935418A (en) * | 2019-11-15 | 2020-03-31 | 西安重光明宸检测技术有限公司 | Preparation method of filter element for removing formaldehyde in air |
| CN110861366A (en) * | 2019-11-27 | 2020-03-06 | 嘉善泰力蜂窝制品有限公司 | Corrosion-resistant aluminum honeycomb core and preparation method of aluminum honeycomb plate |
| CN110982381A (en) * | 2019-12-11 | 2020-04-10 | 江门市壹家美环境工程有限公司 | Environment-friendly coating capable of decomposing formaldehyde |
| CN112717739A (en) * | 2020-12-04 | 2021-04-30 | 中国科学技术大学 | Chemical substance mixing device and method suitable for high-speed flow field environment |
| CN113058423A (en) * | 2021-03-24 | 2021-07-02 | 海信（广东）空调有限公司 | Formaldehyde removal filter screen and preparation method and application thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0411206A1 (en) * | 1989-08-02 | 1991-02-06 | Nippon Kayaku Kabushiki Kaisha | Deodorant and deodorizing method |
| CN2930832Y (en) * | 2006-08-04 | 2007-08-08 | 黑龙江省造纸研究所有限公司 | Paint mist filter paper core with inclined honeycomb holes |
| CN102198405A (en) * | 2011-04-01 | 2011-09-28 | 天津工业大学 | Composite catalyst for purifying indoor formaldehyde and preparation method of composite catalyst |
| CN203523846U (en) * | 2013-08-13 | 2014-04-09 | 余思哲 | Novel mask |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009091177A (en) * | 2007-10-05 | 2009-04-30 | Kyodo Kumiai Latest | Citrus waste activated carbon having function to adsorb-decompose formaldehyde and its manufacturing method |
-
2015
- 2015-03-20 CN CN201510122475.2A patent/CN104689708B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0411206A1 (en) * | 1989-08-02 | 1991-02-06 | Nippon Kayaku Kabushiki Kaisha | Deodorant and deodorizing method |
| CN2930832Y (en) * | 2006-08-04 | 2007-08-08 | 黑龙江省造纸研究所有限公司 | Paint mist filter paper core with inclined honeycomb holes |
| CN102198405A (en) * | 2011-04-01 | 2011-09-28 | 天津工业大学 | Composite catalyst for purifying indoor formaldehyde and preparation method of composite catalyst |
| CN203523846U (en) * | 2013-08-13 | 2014-04-09 | 余思哲 | Novel mask |
Non-Patent Citations (1)
| Title |
|---|
| 过氧化钙的制备及其在涂料中的应用;刘长虹等;《化工科技市场》;20101031;第33卷(第10期);全文 * |
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