CN103706186A - Filter material for air purification and preparation method thereof - Google Patents
Filter material for air purification and preparation method thereof Download PDFInfo
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- CN103706186A CN103706186A CN201310729037.3A CN201310729037A CN103706186A CN 103706186 A CN103706186 A CN 103706186A CN 201310729037 A CN201310729037 A CN 201310729037A CN 103706186 A CN103706186 A CN 103706186A
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Abstract
The invention relates to a filter material for air purification and a preparation method thereof. The filter material is of a multi-layer composite structure and formed by a center layer, a middle polyester fiber mat layer and an outer stainless steel retainer layer, wherein the middle polyester fiber mat layer and the outer stainless steel retainer layer are symmetrically arranged; the thickness of the center layer is 15-50mm; the center layer is formed by a nano polyacrylonitrile (PAN) fiber non-woven layer coated by nano active carbon particles; the diameter of the nano PAN fiber is 150-200nm; the diameters of the nano active carbon particles are 30-50nm; the thickness of the middle polyester fiber mat layer is 10-25mm; the outer stainless steel retainer layer is a protective layer; five layers of materials are fixed by a bolt after being pressed. The filter material disclosed by the invention can be used for adsorbing fine particles which have great risks on a human body, and are 1.5-5 microns in particle size, the filtering efficiency is over 98%, and the filter material is applied to an air filter core in an indoor air purifier.
Description
Technical field
The present invention relates to a kind of composite filter material and preparation method thereof, specifically filtering material and preparation method thereof for a kind of air cleaning.
Background technology
Along with environmental pollution is day by day serious, add the pollution of many interior decorations and ornament materials, air quality has caused social extensive concern.The mankind 68% disease is relevant with air pollution; The World Health Organization classifies room air pollution first of 18 class carcinogens as.Airborne deleterious particle thing refers generally to MP2.5(solid particulate matter particle diameter at 2.5 microns) and more tiny particle, and traditional filtering material is difficult to this class particle filtering.Therefore a kind ofly can filter MP2.5 and more tiny filtering material is to solve air-polluting key point.At present conventional material for air purification is used a large amount of active carbons mostly, relying on the adsorptivity of active carbon to adsorb these solid particulate matters and poisonous gas molecule, is not fairly obvious but adopt separately active carbon for the particle effect of absorption submicron order.
Summary of the invention
Technical problem to be solved by this invention is to overcome above-mentioned the deficiencies in the prior art, provide a kind of rational in infrastructure, preparation technology is simple, filtering material and preparation method thereof for the air cleaning of good filtration effect.
The technical scheme that the present invention solves the problems of the technologies described above employing is: a kind of air cleaning filtering material, it is characterized in that: it is multi-layer compound structure, by central core and symmetrically arranged polyster fibre felt intermediate layer, stainless steel protecting wire net skin, formed, described central core thickness is 15-50mm, it is by the stacked formation that adds of nano polypropylene nitrile (PAN) fabric nonwoven cloth through nano active charcoal particle coating, nanometer PAN fibre diameter is wherein 150-200 nanometer, and nano active charcoal particle diameter is 30-50nm; Polyster fibre felt intermediate layer thickness 10-25mm, stainless steel protecting wire net skin is protective layer, five layer materials are bolted after compressing.
Further, the thickness of described individual layer nano polypropylene nitrile fabric nonwoven cloth is 3-5mm, every square meter individual layer nano polypropylene nitrile fabric nonwoven cloth is coated with 35-45g active carbon, and the described nano polypropylene nitrile of 5-10 layer fabric nonwoven cloth stacks up and forms nano polypropylene nitrile fabric nonwoven cloth central core.
The preparation method of filtering material for the above-mentioned air cleaning of the present invention, it comprises the following steps: first prepare nano polypropylene nitrile fabric nonwoven cloth central core, polyacrylonitrile particle is dissolved in N-N dimethyl formamide (DMF), be made into the polyacrylonitrile solution that mass percent is 12-16%, and then the polyacrylonitrile solution preparing is injected in multi-nozzle electrospinning device, prepare uniform white nano polypropylene nitrile fabric nonwoven cloth, polyacrylonitrile fibre diameter 150-200nm wherein, the thickness of one deck polyacrylonitrile fibre nonwoven is 3-5mm; Then the nano fiber non-woven fabric preparing is cut into sheet material; Nano active charcoal particle is distributed in polyvinyl alcohol water solution, and the diameter of described nano active charcoal particle is 30-50nm, and in solution, polyvinyl alcohol mass content is 2%, and all the other are water, is sprayed onto nano polypropylene nitrile fabric nonwoven cloth surface after atomization.Active carbon coated weight is: the individual layer nano polypropylene nitrile fabric nonwoven cloth that every square meter thickness is 3-5mm is coated with 35-45g active carbon.The described nano polypropylene nitrile of 5-10 layer fabric nonwoven cloth stacks up and forms nano polypropylene nitrile fabric nonwoven cloth central core.
Second step: prepare polyster fibre felt intermediate layer and adopt fibre diameter 8-22 μ m polyster fibre, intermediate layer thickness is 10-25mm, cuts into sheet material; Coarse filtration effect is played in polyster fibre felt intermediate layer, is used for the dust of 10 μ m in filtered air and above larger particles.
The 3rd step: what prepare the outer employing of stainless steel protecting wire net is 26-50 order 304 stainless steel cloths, and steel wire diameter is at 0.05-0.3mm.
The 4th step: the assembling of filtering material is arranged in the nano polypropylene nitrile fiber non-woven that is coated with nano active carbon preparing between two-layer polyster fibre felt; Again the stainless steel sheath cutting out is placed in to polyster fibre felt both sides, five layer materials are fixed with bolt after compressing on four angles.
The polyacrylonitrile that the present invention is prepared by method of electrostatic spinning (PAN) nano non-woven fabric, nano polypropylene nitrile fabric nonwoven cloth surface coated with nano activated carbon granule, being close to central core both sides has been the polyster fibre felt intermediate layer of coarse filtration effect, in polyster fibre felt, the skin in intermediate layer is stainless steel protecting wire net, five layer materials are bolted after compressing, centre does not need bonding, is therefore convenient to dismounting, cleans and changes.After the nano polypropylene nitrile fabric nonwoven cloth central core applying through nano active carbon combines with polyster fibre felt, as indoor air filter material for core, the fine grained of central core is adsorbable larger harm particle diameter to human body between 1.5-5 μ m.There is the features such as filter efficiency is high, preparation technology is simple, air drag is little.
Accompanying drawing explanation
Fig. 1 is that the present invention forms structural representation.
In figure: 1. stainless steel protecting wire net is outer, 2. polyster fibre felt intermediate layer, 3. central core.
The specific embodiment
Below in conjunction with drawings and Examples, the present invention will be further described.
A kind of air cleaning filtering material, it is multi-layer compound structure, by central core 3 and symmetrically arranged polyster fibre felt intermediate layer 2, stainless steel protecting wire net skin 1, formed, described central core thickness is 15-50mm, it is by the stacked formation that adds of nano polypropylene nitrile (PAN) fabric nonwoven cloth through nano active charcoal particle coating, nanometer PAN fibre diameter is wherein 150-200 nanometer, nano active charcoal particle diameter is 30-50nm, and central core can be used for particle diameter that absorption has larger harm to the human body fine grained between 1.5-5 μ m.Polyster fibre felt intermediate layer thickness 10-25mm, it is used for the dust of 10 μ m in filtered air and above larger particles; Stainless steel protecting wire net skin is protective layer, plays a protective role.Five layer materials are bolted after compressing.
Further, the thickness of described individual layer nano polypropylene nitrile fabric nonwoven cloth is 3-5mm, every square meter individual layer nano polypropylene nitrile fabric nonwoven cloth is coated with 35-45g active carbon, and the described nano polypropylene nitrile of 5-10 layer fabric nonwoven cloth stacks up and forms nano polypropylene nitrile fabric nonwoven cloth central core.
The preparation method of filtering material for the above-mentioned air cleaning of the present invention, it comprises the following steps: first prepare nano polypropylene nitrile fabric nonwoven cloth central core, polyacrylonitrile particle is dissolved in N-N dimethyl formamide (DMF), be made into the polyacrylonitrile solution that mass percent is 12-16%, and then the polyacrylonitrile solution preparing is injected in multi-nozzle electrospinning device, adjust magnitude of voltage 22kV, within continuous spinning 4-6 hour, can prepare uniform white nano polypropylene nitrile fabric nonwoven cloth, polyacrylonitrile fibre diameter 150-200nm.Can prepare in a large number nano polypropylene nitrile fabric nonwoven cloth standby.The thickness of one deck polyacrylonitrile fibre nonwoven is 3-5mm; Then the nano fiber non-woven fabric preparing is cut into sheet material; Nano active charcoal particle is distributed in polyvinyl alcohol water solution, the diameter of described nano active charcoal particle is 30-50nm, in solution, polyvinyl alcohol mass content is 2%, active carbon 15%, all the other are water, after atomization, be sprayed onto nano fiber non-woven fabric surface, wherein active carbon coated weight is that every square meter nano polypropylene nitrile fabric nonwoven cloth applies 35-45g
.the described nano fiber non-woven fabric of 5-10 layer stacks up and forms nano polypropylene nitrile fabric nonwoven cloth central core.
Second step: prepare polyster fibre felt intermediate layer and adopt fibre diameter 8-22 μ m polyster fibre, intermediate layer thickness is 10-25mm, cuts into sheet material; Coarse filtration effect is played in polyster fibre felt intermediate layer, is used for the dust of 10 μ m in filtered air and above larger particles.
The 3rd step: what prepare the outer employing of stainless steel protecting wire net is 26-50 order 304 stainless steel cloths, and steel wire diameter is at 0.05-0.3mm.
The 4th step: the assembling of filtering material is arranged in the nano polypropylene nitrile fiber non-woven that is coated with nano active carbon preparing between two-layer polyster fibre felt; Again the stainless steel sheath cutting out is placed in to polyster fibre felt both sides, five layer materials are fixed with bolt after compressing on four angles.
Central core 3 of the present invention, polyster fibre felt intermediate layer 2, stainless steel protecting wire net skin 1 can be processed as square, can be also rectangle.Described nano polypropylene nitrile fabric nonwoven cloth, polyster fibre felt intermediate layer cut into sheet material, and its size can be: 100 * 100mm.
The polyacrylonitrile that the present invention is prepared by method of electrostatic spinning (PAN) nano non-woven fabric, nano polypropylene nitrile fabric nonwoven cloth surface coated with nano activated carbon granule, being close to central core both sides has been the polyster fibre felt intermediate layer of coarse filtration effect, in polyster fibre felt, the skin in intermediate layer is stainless steel protecting wire net, five layer materials are bolted after compressing, centre does not need bonding, is therefore convenient to dismounting, cleans and changes.After the nano polypropylene nitrile fabric nonwoven cloth central core applying through nano active carbon combines with polyster fibre felt, as indoor air filter material for core, the fine grained of central core is adsorbable larger harm particle diameter to human body between 1.5-5 μ m.There is the features such as filter efficiency is high, preparation technology is simple, air drag is little.
Embodiment 1:
A kind of air cleaning filtering material; it is multi-layer compound structure; by central core and symmetrically arranged polyster fibre felt intermediate layer, stainless steel protecting wire net skin, formed; described central core thickness is 15mm; it is by the stacked formation that adds of nano polypropylene nitrile (PAN) fabric nonwoven cloth through nano active charcoal particle coating; nanometer PAN fibre diameter is wherein 150-200 nanometer; nano active charcoal particle diameter is 30nm; polyster fibre felt intermediate layer thickness 10mm; stainless steel protecting wire net skin is protective layer, and five layer materials are bolted after compressing.The thickness of described individual layer nano polypropylene nitrile fabric nonwoven cloth is 3mm, every square meter individual layer nano polypropylene nitrile fabric nonwoven cloth is coated with 35-45g active carbon, and 5 layers of described nano polypropylene nitrile fabric nonwoven cloth stack up and form nano polypropylene nitrile fabric nonwoven cloth central core.
The preparation method of filtering material for the above-mentioned air cleaning of the present invention, it comprises the following steps: first prepare nano polypropylene nitrile fabric nonwoven cloth central core, polyacrylonitrile particle is dissolved in N-N dimethyl formamide (DMF), be made into mass percent and be 12% polyacrylonitrile solution, and then the polyacrylonitrile solution preparing is injected in multi-nozzle electrospinning device, prepare uniform white nano polypropylene nitrile fabric nonwoven cloth, polyacrylonitrile fibre diameter 150-200nm wherein, the thickness of one deck polyacrylonitrile fibre nonwoven is 3mm; Then the nano fiber non-woven fabric preparing is cut into sheet material, it is of a size of: 100 * 100mm; Nano active charcoal particle is distributed in polyvinyl alcohol water solution, and the diameter of described nano active charcoal particle is 30nm, and in solution, polyvinyl alcohol mass content is 2%, and all the other are water, are sprayed onto nano fiber non-woven fabric surface after atomization.Wherein active carbon coated weight is that every square meter polyacrylonitrile nano nonwoven applies 35-45g, and 5 layers of described nano fiber non-woven fabric stack up and form nano polypropylene nitrile fabric nonwoven cloth central core.
Second step: prepare polyster fibre felt intermediate layer and adopt fibre diameter 8 μ m polyster fibres, intermediate layer thickness is 10mm, cuts into sheet material, and it is of a size of: 100 * 100mm; Play coarse filtration effect, be used for the dust of 10 μ m in filtered air and above larger particles.
The 3rd step: what prepare the outer employing of stainless steel protecting wire net is 26 order 304 stainless steel cloths, and steel wire diameter is at 0.05mm; Be cut into and be of a size of: 100 * 100mm size is stand-by.
The 4th step: the assembling of filtering material is arranged in the nano polypropylene nitrile fiber non-woven that is coated with nano active carbon preparing between two-layer polyster fibre felt; Again the stainless steel sheath cutting out is placed in to polyster fibre felt both sides, five layer materials are fixed with bolt after compressing on four angles.
Embodiment 2:
A kind of air cleaning filtering material; it is multi-layer compound structure; by central core and symmetrically arranged polyster fibre felt intermediate layer, stainless steel protecting wire net skin, formed; described central core thickness is 32mm; it is by the stacked formation that adds of nano polypropylene nitrile (PAN) fabric nonwoven cloth through nano active charcoal particle coating; nanometer PAN fibre diameter is wherein 150-200 nanometer; nano active charcoal particle diameter is 40nm; polyster fibre felt intermediate layer thickness 15mm; stainless steel protecting wire net skin is protective layer, and five layer materials are bolted after compressing.The thickness of described individual layer nano polypropylene nitrile fabric nonwoven cloth is 4mm, every square meter individual layer nano polypropylene nitrile fabric nonwoven cloth is coated with 35-45g active carbon, and 8 layers of described nano polypropylene nitrile fabric nonwoven cloth stack up and form nano polypropylene nitrile fabric nonwoven cloth central core.
The preparation method of filtering material for the above-mentioned air cleaning of the present invention, it comprises the following steps: first prepare nano polypropylene nitrile fabric nonwoven cloth central core, polyacrylonitrile particle is dissolved in N-N dimethyl formamide (DMF), be made into mass percent and be 15% polyacrylonitrile solution, and then the polyacrylonitrile solution preparing is injected in multi-nozzle electrospinning device, prepare uniform white nano polypropylene nitrile fabric nonwoven cloth, polyacrylonitrile fibre diameter 150-200nm wherein, the thickness of one deck polyacrylonitrile fibre nonwoven is 4mm; Then the nano fiber non-woven fabric preparing is cut into sheet material, it is of a size of: 100 * 100mm; Nano active charcoal particle is distributed in polyvinyl alcohol water solution, the diameter of described nano active charcoal particle is 40nm, in solution, polyvinyl alcohol mass content is 2%, wherein active carbon coated weight is that every square meter polyacrylonitrile nano nonwoven applies 40g, all the other are water, are sprayed onto nano fiber non-woven fabric surface after atomization.8 layers of described nano fiber non-woven fabric stack up and form nano polypropylene nitrile fabric nonwoven cloth central core.
Second step: prepare polyster fibre felt intermediate layer and adopt fibre diameter 12 μ m polyster fibres, intermediate layer thickness is 20mm, cuts into sheet material, and it is of a size of: 100 * 100mm; Play coarse filtration effect, be used for the dust of 10 μ m in filtered air and above larger particles.
The 3rd step: what prepare the outer employing of stainless steel protecting wire net is 40 order 304 stainless steel cloths, and steel wire diameter is at 0.12mm; Be cut into and be of a size of: 100 * 100mm size is stand-by.
The 4th step: the assembling of filtering material is arranged in the nano polypropylene nitrile fiber non-woven that is coated with nano active carbon preparing between two-layer polyster fibre felt; Again the stainless steel sheath cutting out is placed in to polyster fibre felt both sides, five layer materials are fixed with bolt after compressing on four angles.
Embodiment 3: a kind of air cleaning filtering material; it is multi-layer compound structure; by central core and symmetrically arranged polyster fibre felt intermediate layer, stainless steel protecting wire net skin, formed; described central core thickness is 50mm; it is by the stacked formation that adds of nano polypropylene nitrile (PAN) fabric nonwoven cloth through nano active charcoal particle coating; nanometer PAN fibre diameter is wherein 150-200 nanometer; nano active charcoal particle diameter is 50nm; polyster fibre felt intermediate layer thickness 25mm; stainless steel protecting wire net skin is protective layer, and five layer materials are bolted after compressing.The thickness of described individual layer nano polypropylene nitrile fabric nonwoven cloth is 5mm, every square meter individual layer nano polypropylene nitrile fabric nonwoven cloth is coated with 35-45g active carbon, and 10 layers of described nano polypropylene nitrile fabric nonwoven cloth stack up and form nano polypropylene nitrile fabric nonwoven cloth central core.
The preparation method of filtering material for the above-mentioned air cleaning of the present invention, it comprises the following steps: first prepare nano polypropylene nitrile fabric nonwoven cloth central core, polyacrylonitrile particle is dissolved in N-N dimethyl formamide (DMF), be made into mass percent and be 16% polyacrylonitrile solution, and then the polyacrylonitrile solution preparing is injected in multi-nozzle electrospinning device, prepare uniform white nano polypropylene nitrile fabric nonwoven cloth, polyacrylonitrile fibre diameter 150-200nm wherein, the thickness of one deck polyacrylonitrile fibre nonwoven is 5mm; Then the nano fiber non-woven fabric preparing is cut into sheet material, it is of a size of: 100 * 100mm; Nano active charcoal particle is distributed in polyvinyl alcohol water solution, and the diameter of described nano active charcoal particle is 50nm, and in solution, polyvinyl alcohol mass content is 2%, and all the other are water, are sprayed onto nano fiber non-woven fabric surface after atomization.Wherein active carbon coated weight is that every square meter polyacrylonitrile nano nonwoven applies 45g.10 layers of described nano fiber non-woven fabric stack up and form nano polypropylene nitrile fabric nonwoven cloth central core.
Second step: prepare polyster fibre felt intermediate layer and adopt fibre diameter 22 μ m polyster fibres, intermediate layer thickness is 25mm, cuts into sheet material, and it is of a size of: 100 * 100mm; Play coarse filtration effect, be used for the dust of 10 μ m in filtered air and above larger particles.
The 3rd step: what prepare the outer employing of stainless steel protecting wire net is 50 order 304 stainless steel cloths, and steel wire diameter is at 0.3mm; Be cut into and be of a size of: 100 * 100mm size is stand-by.
The 4th step: the assembling of filtering material is arranged in the nano polypropylene nitrile fiber non-woven that is coated with nano active carbon preparing between two-layer polyster fibre felt; Again the stainless steel sheath cutting out is placed in to polyster fibre felt both sides, five layer materials are fixed with bolt after compressing on four angles.
Claims (3)
1. an air cleaning filtering material, it is characterized in that: it is multi-layer compound structure, by central core and symmetrically arranged polyster fibre felt intermediate layer, stainless steel protecting wire net skin, formed, described central core thickness is 15-50mm, it is by the stacked formation that adds of nano polypropylene nitrile (PAN) fabric nonwoven cloth through nano active charcoal particle coating, nanometer PAN fibre diameter is wherein 150-200 nanometer, and nano active charcoal particle diameter is 30-50nm; Polyster fibre felt intermediate layer thickness 10-25mm, stainless steel protecting wire net skin is protective layer, five layer materials are bolted after compressing.
2. air cleaning filtering material according to claim 1, it is characterized in that: the thickness of described individual layer nano polypropylene nitrile fabric nonwoven cloth is 3-5mm, every square meter individual layer nano polypropylene nitrile fabric nonwoven cloth is coated with 35-45g active carbon, and the described nano polypropylene nitrile of 5-10 layer fabric nonwoven cloth stacks up and forms nano polypropylene nitrile fabric nonwoven cloth central core.
3. the preparation method of filtering material for air cleaning described in claim 1, is characterized in that: it comprises the following steps:
First prepare nano polypropylene nitrile fabric nonwoven cloth central core, polyacrylonitrile particle is dissolved in N-N dimethyl formamide (DMF), be made into the polyacrylonitrile solution that mass percent is 12-16%, and then the polyacrylonitrile solution preparing is injected in multi-nozzle electrospinning device, prepare uniform white nano polypropylene nitrile fabric nonwoven cloth, polyacrylonitrile fibre diameter 150-200nm wherein, the thickness of one deck polyacrylonitrile fibre nonwoven is 3-5mm; Then the nano fiber non-woven fabric preparing is cut into sheet material; Nano active charcoal particle is distributed in polyvinyl alcohol water solution, and the diameter of described nano active charcoal particle is 30-50nm, and in solution, polyvinyl alcohol mass content is 2%, and all the other are water, is sprayed onto nano polypropylene nitrile fabric nonwoven cloth surface after atomization; Active carbon coated weight is that the individual layer nano polypropylene nitrile fabric nonwoven cloth that every square meter thickness is 3-5mm is coated with 35-45g active carbon; The described nano polypropylene nitrile of 5-10 layer fabric nonwoven cloth stacks up and forms nano polypropylene nitrile fabric nonwoven cloth central core;
Second step: prepare polyster fibre felt intermediate layer and adopt fibre diameter 8-22 μ m polyster fibre, intermediate layer thickness is 10-25mm, cuts into sheet material;
The 3rd step: what prepare the outer employing of stainless steel protecting wire net is 26-50 order 304 stainless steel cloths, and steel wire diameter is at 0.05-0.3mm;
The 4th step: the assembling of filtering material is arranged in the nano polypropylene nitrile fiber non-woven that is coated with nano active carbon preparing between two-layer polyster fibre felt; Again the stainless steel sheath cutting out is placed in to polyster fibre felt both sides, five layer materials are fixed with bolt after compressing on four angles.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104165106A (en) * | 2014-06-30 | 2014-11-26 | 赖昭文 | Air filter element convenient to wash |
| CN104258637A (en) * | 2014-10-13 | 2015-01-07 | 江苏瀚霆环保滤材有限公司 | High-temperature filter material for treatment of kiln tails of cement plants |
| CN104790124A (en) * | 2015-04-28 | 2015-07-22 | 深圳市东城绿色投资有限公司 | Nanofiber non-woven fabric and preparation method thereof |
| CN106368048A (en) * | 2016-08-30 | 2017-02-01 | 苏州华泰空气过滤器有限公司 | Preparation method of active carbon nanoparticle filter paper |
| CN106964209A (en) * | 2017-04-10 | 2017-07-21 | 珠海格力电器股份有限公司 | Filter core and have its clarifier |
| CN107160720A (en) * | 2017-05-23 | 2017-09-15 | 上海科涤环保科技有限公司 | A kind of high efficiency composition protects the preparation method of filter material |
| CN109137095A (en) * | 2018-10-26 | 2019-01-04 | 大连民族大学 | The collection table of electrospinning fibre jet shaper |
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| CN106925031A (en) * | 2015-12-29 | 2017-07-07 | 天津中盛生物工程有限公司 | A kind of shitosan air filting material and preparation method thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104165106A (en) * | 2014-06-30 | 2014-11-26 | 赖昭文 | Air filter element convenient to wash |
| CN104258637A (en) * | 2014-10-13 | 2015-01-07 | 江苏瀚霆环保滤材有限公司 | High-temperature filter material for treatment of kiln tails of cement plants |
| CN104790124A (en) * | 2015-04-28 | 2015-07-22 | 深圳市东城绿色投资有限公司 | Nanofiber non-woven fabric and preparation method thereof |
| CN106368048A (en) * | 2016-08-30 | 2017-02-01 | 苏州华泰空气过滤器有限公司 | Preparation method of active carbon nanoparticle filter paper |
| CN106964209A (en) * | 2017-04-10 | 2017-07-21 | 珠海格力电器股份有限公司 | Filter core and have its clarifier |
| CN106964209B (en) * | 2017-04-10 | 2022-08-02 | 珠海格力电器股份有限公司 | Filter core and have its clarifier |
| CN107160720A (en) * | 2017-05-23 | 2017-09-15 | 上海科涤环保科技有限公司 | A kind of high efficiency composition protects the preparation method of filter material |
| CN109137095A (en) * | 2018-10-26 | 2019-01-04 | 大连民族大学 | The collection table of electrospinning fibre jet shaper |
| CN109137095B (en) * | 2018-10-26 | 2021-11-30 | 邳州市鑫盛创业投资有限公司 | Collecting table of electrospinning fiber jet forming device |
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| CN103706186B (en) | 2015-05-13 |
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