CN102085437A - Filter material for air filtration and application thereof - Google Patents
Filter material for air filtration and application thereof Download PDFInfo
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- CN102085437A CN102085437A CN2009102590981A CN200910259098A CN102085437A CN 102085437 A CN102085437 A CN 102085437A CN 2009102590981 A CN2009102590981 A CN 2009102590981A CN 200910259098 A CN200910259098 A CN 200910259098A CN 102085437 A CN102085437 A CN 102085437A
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Abstract
The invention discloses a filter material for air filtration and application thereof. The filter material at least contains two layers of charged non-woven fabrics, the average aperture of the charged non-woven fabric of the top is 50 to 150 microns, and the average aperture of the charged non-woven fabric of the bottom is 5 to 50 microns. The aperture distribution of the filter material has a special structure of gradient distribution. The filter material for air filtration can play a role in catching and isolating micro dust particles, greatly prolongs the service life, and can be applied in the field of automobile filters and the like.
Description
Technical field
The present invention relates to a kind of air filtration with filter material and uses thereof, be specifically related to a kind of arresting efficiency that can not only improve filter material, can improve control of dust ability again dust to fine dust, thus air filtration scavenging material that increases the service life and uses thereof.
Background technology
Along with being showing improvement or progress day by day of society, people are more and more higher to environment and environmental protection requirement, and the relevant laws and regulations of country are also more and more stricter certainly.As the field of air filtration in close relations, also more and more be subjected to people's attention with people.Especially family's air purifier, automobile filter.And automobile filter is a kind of filtering material that purifies air in the railway carriage or compartment, automobile chamber that is specifically designed to.The non-charged nonwoven of the different strainabilities of employing multilayer etc. carries out orderly lamination and forms, can adsorb in the car the peculiar smell foreign odor as: dusty gas such as toluene, formaldehyde, sulfur dioxide, sulfhydryl compound, ammonia especially have significant adsorption effect and can filter dust particle etc. smog.For these filters, require the filter of extremely little volume, be gas for the filtering cabin indoor and outdoor, the pressure loss of filter material must be low as much as possible, and simultaneously for the bigger dust of particle diameter, general filter all has and captures performance preferably; But for the less fine dusts of particle diameter, the words that reach high capture performance are difficult.And, for these filters, in actual use, be subjected to using the influence of differences such as zone, environment bigger.Such as in the city, the ratio of the fine dusts that the particle diameter that motor vehicle exhaust emission causes is less is than higher, and opposite, and in the suburb or the rural area, the ratio of the dust that particle diameters such as some oarse-grained pollen, vegetable seeds are bigger is just than higher.2.5 small-particle, the particularly fine particle below 1 micron that micron is following in case enter human lung and sedimentation, just are difficult to excrete, thereby cause lung cancer, anaphylactia etc.
Present prior art aspect, such as application number for the CN200410070275.9 patent relates to a kind of liquid fuel filter, ectonexine adopts the nonwoven in different apertures, but the nonwoven in these different apertures is a common non-woven fabric, at all too late charged nonwoven aspect arresting efficiency and its service life.Because common non-woven fabric is mechanical capture effect to the capture of dust, capture dust by inertia, interception, gravity, diffusion exactly.But traditional machinery capture effect does not wait the requirement of satisfying present stage, and will increase machinery capture effect, can only reach by increasing nonwoven grammes per square metre and thickness, has so not only increased the use amount of material, has also increased resistance (crushing) virtually.
Summary of the invention
The purpose of this invention is to provide a kind of air filtration with filter material and uses thereof, in the arresting efficiency that improves dust, can prolong its service life again.
Technical solution of the present invention is as follows:
This filter material contains two-layer charged nonwoven at least, and the average pore size of the charged nonwoven of the superiors is 50～150 microns (um), and the average pore size of the charged nonwoven of orlop is 5～50 microns.The purpose of charged processing is in order to improve arresting efficiency, reduces dust and stops up, and filtering material of the present invention through charged processing, is promptly given fiber semi-permanent charged particles, thereby made it the fine dusts in the absorbed air.Compare with the filtering material of the not charged processing of process, charged rapidoprint has reduced the pressure loss of filtering material when reaching high arresting efficiency, reduce and stop up, and increases the service life.About charged method for processing, can be directly carry out electrification in high voltage processing and handle fibrage into the net, when perhaps the spinning spinning nozzle comes out, make by high voltage that fiber or long filament are charged to become net again, also can pass through the charged method of pure water+catalyst treatment.And the distribution of the different range in aperture, just gradient is filtered, and can improve result of use (dust catching amount) greatly, can improve service life.For the distribution in aperture, if the average pore size of the charged nonwoven of the superiors of the present invention does not just have filter effect more than 150 microns; And below 50 microns, just do not have optimize structure, effect that laminated gradient filters.Equally, if the average pore size of the charged nonwoven of orlop just can not capture small dust more than 50 microns; Below 5 microns, will cause crushing very high, influence result of use.And for the number of plies of charged nonwoven, the present invention selects more than 2 layers at least, because if 1 layer of charged nonwoven just, can't reach best effect aspect performance and life-span capturing.
The average pore size of the charged nonwoven of the superiors is 2～10 times of average pore size of the charged nonwoven of orlop in this filtering material.In order to prolong the service life of filter material, the present invention is by carrying out aperture adjustment from thickness direction.So-called aperture adjustment filter material is exactly the descending increase of average pore size from upstream side (gas inflow side) to downstream side (gas outflow side) fibrage (or nonwoven layer).The aperture of just going up fluid layer is big, can capture the big particle of diameter in the dust.The aperture of following fluid layer is little, guarantees the capture of fine dusts, thereby filter is captured big dust to fine dusts mostly, protects health, and reduces the obstruction of dust as far as possible, increases the service life.In order to reach best strainability and long life-span, the last fluid layer hole diameter enlargement of trying one's best filters the oarse-grained pressure loss that reduces simultaneously, and the aperture of following fluid layer is as far as possible little, is used to capture granule.
This filter material also contains one deck fid, and fid be arranged on the charged nonwoven of the superiors above.For comfortableness, generally do not use fid in fields such as mouth masks; And for the pleating material of needs, then must use fid, for the air filtration filter material, stability for pleating machine-shaping, general upper layer side at charged nonwoven, top stacked again one deck fid of the charged nonwoven of the superiors just, the charged nonwoven in charged nonwoven/small-bore, supporting layer/large aperture just, like this intensity, rigidity, the pleating stability of filter material can be increased dramatically.And, improve its initial stage arresting efficiency simultaneously in order to keep its rigidity, if use the fiber effects of different fiber numbers and/or different materials better for fid.As the fid of the superiors, can filter out earlier by earlier that grain diameter is bigger dust, the less dust of size ratio is then filtered by following charged nonwoven, can improve the filter effect of filter material to dust greatly like this.The average pore size of fid is 0.6～1.5 times of average pore size of the charged nonwoven of the superiors, considers that gradient filters and life-saving preferred 1.0～1.5 times.
Have at least one deck to constitute in this filter material by the thermoplastic resin fiber of different fiber numbers.Constitute as the thermoplastic resin fiber of charged nonwoven, then can reach the effect that thickness is mixed, improve arresting efficiency by different fiber numbers; And the words that fid is made of the thermoplastic resin fiber of the same race of different fiber numbers, can improve its arresting efficiency, if in addition by the different fiber numbers of different materials the thermoplastic resin fiber constitute, when improving its arresting efficiency, its rigidity be can also increase, thereby follow-up pleating processing and use are convenient to.
Contain the function granule for absorbing in this filter material.For granule for absorbing, mainly be for peculiar smell foreign odor in the binding domain as pernicious gases such as toluene, formaldehyde, adsorb pernicious gas by between charged nonwoven layer and adjacent layer, adding function granule for absorbing layer.About the function granule for absorbing, can be deodorant, aromatic, antiseptic etc., preferably use active carbon, ion exchange resin, porous inorganic particle, catalyst.
Function granule for absorbing particle size range in this filter material more than at least 50% is between 100～300 microns.If the particle diameter more than 50% below 100 microns, might spill, cause secondary pollution in the middle of fid or charged nonwoven layer.Certainly, if the particle diameter great majority more than 300 microns because particle is bigger, in the follow-up pleating man-hour that adds, because stressed effect, particle can the bursting nonwoven layer, particularly charged nonwoven layer.
For the applying method between each layer, not simply to be laminated into filter material, the more important thing is and will fit near incorporate structure.Incorporate laminating method preferably adopts heat posted legal.Such as, behind the surface that polymer powder that hot-melt resin is formed or low-melting fiber are spread across each layer equably, repave another layer on its surface, thereby make the hot-melt resin fusion make two-layer laminate by hot blast, infrared ray heating, electrical heating etc.; Perhaps pressurization is stacked after the one side of one deck sprays hot-melt resin to repave another layer; Perhaps make two-layer bonding by the ultrasonic vibration fusion.
At aspect of performance, be that 0.3 micron and face wind speed are to test under the condition of 6.5m/min in the filtered particles average-size, the arresting efficiency of this filter material is more than 40%.
Filtering material of the present invention is in the automobile filter Application for Field.
The specific embodiment
The method of testing of each rerum natura is as follows among the present invention:
(1) average pore size [μ m]
Use porous material automatic pore size determination device Perm-Porometer (PMI corporate system), (ASTM-316-86) calculates average pore size by the bubbling method.The diameter of working sample is 25mm.About measuring solution, when the material of test aperture below 180um, use Galwick, and if the aperture surpasses 180um, then test with pure water.
The result who obtains by above determinator is as average pore size (Mean Flow PoreDiameter).Any 5 local samplings and mensuration in working sample obtain mean value.
(2) arresting efficiency [%]
The filter material of sheet is put into 0.1m
2On the machine of aperture area, fix, the air that makes face wind speed 6.5m/min is measured dirty air particles number (particle diameter 0.3～0.5um) on the filter material by measuring filter material with corpuscular counter (Japanese RION corporate system), thereby calculate the arresting efficiency of this mensuration filter material, its computing formula is as follows:
Arresting efficiency (%)=1-(dirty population/upper reaches population) * 100.
Any 5 local samplings and mensuration in working sample obtain mean value.
(3) dust catching amount [g/m
2]
The filter material of sheet is put into 0.1m
2On the machine of aperture area, fix, the face wind speed of making is that the air of 6.5m/min passes through to measure filter material, above the air inflow side, with 70mg/m
3Dust concentration supply with 15 kinds of dust of JIS, measure the dirty pressure loss on the filter material with differential manometer, when the pressure loss rises to 150Pa, stop to supply with dust, measure the dust catching amount that accumulates on the sample.When changing international dust ISO-Fine-A2 into, also take above-mentioned same method to measure dust catching amount on the filter material.Any 5 local samplings and mensuration in working sample obtain mean value.
Usually, come the service life of apparent filter material indirectly by the dust catching amount on the filter material.Generally, the filter material that the dust catching amount is big, service life is long more.
Embodiment 1:
A kind of air filtration filter material, adopt following structure from the air inflow side to the air outflow side, supporting layer/charged nonwoven 1/ charged nonwoven 2, wherein supporting layer is the chemical adhesion nonwoven of average pore size 115um, the charged nonwoven 1 of the superiors is the melt spraying non-woven fabrics of average pore size 104um, the charged nonwoven 2 of orlop is the melt spraying non-woven fabrics of average pore size 21um, and this filter material is assembled into filter core again by (the rolling over high 25mm) processing that gives a discount.Measure arresting efficiency and the pressure loss of this filter material to the air particles of 0.3～0.5um, and the dust catching amount when measuring dust and being 15 kinds of JIS and ISO-Fine-A2, concrete outcome sees Table 1.
Embodiment 2:
A kind of air filtration filter material, adopt following structure from the air inflow side to the air outflow side, supporting layer/charged nonwoven 1/ charged nonwoven 2, wherein supporting layer is the chemical adhesion nonwoven of average pore size 158um, the charged nonwoven 1 of the superiors is the melt spraying non-woven fabrics of average pore size 104um, the charged nonwoven 2 of orlop is the melt spraying non-woven fabrics of average pore size 38um, and this filter material is assembled into filter core again by (the rolling over high 25mm) processing that gives a discount.Measure arresting efficiency and the pressure loss of this filter material to the air particles of 0.3～0.5um, and the dust catching amount when measuring dust and being 15 kinds of JIS and ISO-Fine-A2, concrete outcome sees Table 1.
Embodiment 3:
A kind of air filtration filter material, adopt following structure from the air inflow side to the air outflow side, supporting layer/activated carbon particles/charged nonwoven 1/ charged nonwoven 2, wherein supporting layer is the chemical adhesion nonwoven of average pore size 115um, the use amount of activated carbon particles is 150g/m
2, the charged nonwoven 1 of the superiors is the spun-bonded non-woven fabrics of average pore size 121um, and the charged nonwoven 2 of orlop is the melt spraying non-woven fabrics of average pore size 21um, and this filter material is assembled into filter core again by (the rolling over high 25mm) processing that gives a discount.Measure arresting efficiency and the pressure loss of this filter material to the air particles of 0.3～0.5um, and the dust catching amount when measuring dust and being 15 kinds of JIS and ISO-Fine-A2, concrete outcome sees Table 1.
Embodiment 4:
A kind of air filtration filter material, adopt following structure from the air inflow side to the air outflow side, supporting layer/charged nonwoven 1/ nonwoven 2/ charged nonwoven 3, wherein supporting layer is the chemical adhesion nonwoven of average pore size 115um, the charged nonwoven 1 of the superiors is the spun-bonded non-woven fabrics of average pore size 88um, nonwoven 2 is the melt spraying non-woven fabrics of average pore size 38um, the charged nonwoven 3 of orlop is the melt spraying non-woven fabrics of average pore size 15um, and this filter material is assembled into filter core again by (the rolling over high 25mm) processing that gives a discount.Measure arresting efficiency and the pressure loss of this filter material to the air particles of 0.3～0.5um, and the dust catching amount when measuring dust and being 15 kinds of JIS and ISO-Fine-A2, concrete outcome sees Table 1.
Embodiment 5:
A kind of air filtration filter material, adopt following structure from the air inflow side to the air outflow side, supporting layer/charged nonwoven 1/ charged nonwoven 2, wherein supporting layer is the chemical adhesion nonwoven of average pore size 115um, the charged nonwoven 1 of the superiors is the melt spraying non-woven fabrics of average pore size 104um, the iso-fineness consolute blown non-woven fabric that the charged nonwoven 2 of orlop is average pore size 10um, wherein the variation in fiber diameter scope is between 100nm～30um, and this filter material is assembled into filter core again by (the rolling over high 25mm) processing that gives a discount.Measure arresting efficiency and the pressure loss of this filter material to the air particles of 0.3～0.5um, and the dust catching amount when measuring dust and being 15 kinds of JIS and ISO-Fine-A2, concrete outcome sees Table 1.
Air filtration among the embodiment 1～5 uses filter material in the automobile filter Application for Field.
Comparative example 1:
A kind of air filtration filter material, adopt following structure from the air inflow side to the air outflow side, supporting layer/charged nonwoven, wherein supporting layer is the chemical adhesion nonwoven of average pore size 115um, charged nonwoven is the melt spraying non-woven fabrics of average pore size 15um, and this filter material is assembled into filter core again by (the rolling over high 25mm) processing that gives a discount.Measure arresting efficiency and the pressure loss of this filter material to the air particles of 0.3～0.5um, and the dust catching amount when measuring dust and being 15 kinds of JIS and ISO-Fine-A2, concrete outcome sees Table 1.
Comparative example 2:
A kind of air filtration filter material, adopt following structure from the air inflow side to the air outflow side, supporting layer/nonwoven 1/ nonwoven 2, wherein supporting layer is the chemical adhesion nonwoven of average pore size 115um, nonwoven 1 is the melt spraying non-woven fabrics of average pore size 126um, nonwoven 2 is the melt spraying non-woven fabrics of average pore size 21um, and this filter material is assembled into filter core again by (the rolling over high 25mm) processing that gives a discount.Measure arresting efficiency and the pressure loss of this filter material to the air particles of 0.3～0.5um, and the dust catching amount when measuring dust and being 15 kinds of JIS and ISO-Fine-A2, concrete outcome sees Table 1.
Claims (9)
1. air filtration filter material, it is characterized in that: this filter material contains two-layer charged nonwoven at least, and the average pore size of the charged nonwoven of the superiors is 50～150 microns, and the average pore size of the charged nonwoven of orlop is 5～50 microns.
2. according to the described air filtration filter material of claim 1, it is characterized in that: the average pore size of the charged nonwoven of the described the superiors is 2～10 times of average pore size of the charged nonwoven of orlop.
3. according to the described air filtration filter material of claim 1, it is characterized in that: this filter material also contains one deck fid, and described fid is on the charged nonwoven of the superiors.
4. according to the described air filtration filter material of claim 3, it is characterized in that: the average pore size of described fid is 0.6～1.5 times of average pore size of the charged nonwoven of the superiors.
5. according to the described air filtration filter material of claim 1, it is characterized in that: constitute by the thermoplastic resin fiber of the different fiber numbers of one deck at least in this filter material.
6. according to claim 1 or 3 described air filtration filter materials, it is characterized in that: contain the function granule for absorbing in this filter material.
7. according to the described air filtration filter material of claim 6, it is characterized in that: the particle diameter scope in the described function granule for absorbing more than at least 50% is between 100～300 microns.
8. according to the described air filtration filter material of claim 1, it is characterized in that: be of a size of under the condition that 0.3 micron and face wind speed are 6.5m/min in filtered particles and test, the arresting efficiency of this filter material is more than 40%.
One kind according to claim 1 air filtration with filter material in the automobile filter Application for Field.
Priority Applications (1)
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| CN2009102590981A CN102085437A (en) | 2009-12-04 | 2009-12-04 | Filter material for air filtration and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009102590981A CN102085437A (en) | 2009-12-04 | 2009-12-04 | Filter material for air filtration and application thereof |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105605763A (en) * | 2016-03-29 | 2016-05-25 | 江苏深氧环保科技有限公司 | Filter material for air conditioners and preparation method thereof |
| CN105617785A (en) * | 2016-03-29 | 2016-06-01 | 江苏深氧环保科技有限公司 | Filter element for central air conditioner |
| CN105617786A (en) * | 2016-03-29 | 2016-06-01 | 江苏深氧环保科技有限公司 | Filter element for wall-hung air-conditioner |
| CN105664649A (en) * | 2016-03-29 | 2016-06-15 | 江苏深氧环保科技有限公司 | Ceiling machine |
| CN105664650A (en) * | 2016-03-29 | 2016-06-15 | 江苏深氧环保科技有限公司 | Central air-conditioning return air outlet filtering mechanism |
| CN105771510A (en) * | 2016-03-29 | 2016-07-20 | 江苏深氧环保科技有限公司 | Filter element for ceiling air conditioner |
| CN105797522A (en) * | 2016-03-29 | 2016-07-27 | 江苏深氧环保科技有限公司 | Wall-mounted machine |
| CN108043112A (en) * | 2017-12-14 | 2018-05-18 | 江苏工程职业技术学院 | A kind of automobile-used antibacterial air-filtering material containing graphene oxide composite material and preparation method thereof |
| CN114211824A (en) * | 2020-09-18 | 2022-03-22 | 科恩·杰森 | Three-layer composite organic filter material based on aerodynamic optimization |
| CN116726606A (en) * | 2023-07-08 | 2023-09-12 | 江苏金由新材料有限公司 | Porous filter material and preparation method and application thereof |
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| CN108043112A (en) * | 2017-12-14 | 2018-05-18 | 江苏工程职业技术学院 | A kind of automobile-used antibacterial air-filtering material containing graphene oxide composite material and preparation method thereof |
| CN114211824A (en) * | 2020-09-18 | 2022-03-22 | 科恩·杰森 | Three-layer composite organic filter material based on aerodynamic optimization |
| CN116726606A (en) * | 2023-07-08 | 2023-09-12 | 江苏金由新材料有限公司 | Porous filter material and preparation method and application thereof |
| CN116726606B (en) * | 2023-07-08 | 2024-05-10 | 江苏金由新材料有限公司 | Porous filter material and preparation method and application thereof |
| CN116726606B9 (en) * | 2023-07-08 | 2024-08-23 | 江苏金由新材料有限公司 | Porous filter material and preparation method and application thereof |
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Application publication date: 20110608 |