CN109228569A - A method of filter composite highly effective filter material is prepared with microporous teflon membran-melt-blown non-woven material - Google Patents
A method of filter composite highly effective filter material is prepared with microporous teflon membran-melt-blown non-woven material Download PDFInfo
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- CN109228569A CN109228569A CN201810895796.XA CN201810895796A CN109228569A CN 109228569 A CN109228569 A CN 109228569A CN 201810895796 A CN201810895796 A CN 201810895796A CN 109228569 A CN109228569 A CN 109228569A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
-
- 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
- B01D46/0001—Making filtering elements
-
- 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
- B01D46/54—Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms
- B01D46/543—Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms using membranes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
- B32B27/322—Layered products comprising a layer of synthetic resin comprising polyolefins comprising halogenated polyolefins, e.g. PTFE
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/02—Coating on the layer surface on fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/20—Inorganic coating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0253—Polyolefin fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0276—Polyester fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/728—Hydrophilic
Abstract
The invention discloses a kind of methods for preparing filter composite highly effective filter material with microporous teflon membran-melt-blown non-woven material, pretreated melt-blown non-woven material is fixed one jiao with tweezers, and tweezers are fixed with iron stand, keep melt-blown non-woven material perpendicular to the ground, first even application adhesive, then spraying graphite alkene suspension, evaporates solvent flash baking, spraying repeatedly, obtains graphene spraying melt-blown non-woven material；The microporous teflon membran that Low Temperature Plasma Treating is crossed immerses in acrylic monomers solution, after leading to nitrogen deoxygenation, in water-bath after graft polymerization reaction, is cleaned by ultrasonic with deionized water, is extracted with deionized water, dry to constant weight；By the microporous teflon membran of modification of graft be uniformly laid on by defeated lace curtaining conveying come graphene spray melt-blown non-woven material on, it is fit to form two stackings, non-woven hot rolling system is then fed, by the pressure and heat effect of upper heating roller and lower engraved roll, forms composite highly effective filter material.
Description
Technical field
The invention belongs to filter material fields, and in particular to a kind of to use microporous teflon membran-melt-blown non-woven material
The method that material prepares filter composite highly effective filter material.
Background technique
Air filter can quickly and efficiently remove the particulate pollutant in air, therefore in family, office, vehicle
Between equal closing place, air filter becomes most common particulate pollutant removal device now, and highly effective air filter material is then
" heart " of air filter is the main component of filtration, decides the filtering accuracy of air filter.
Glass fiber filter paper and electret Melt Blown Nonwoven Filter are most common two classes in indoor air cleaner now
High-efficiency filtering material.Glass filter paper possesses fine and close fibre net structure, and aperture is small, and dust containing capacity is high, aobvious to the strainability of particulate pollutant
It writes, but its poor moisture resistance, gaseous state boron pollution is also easy to produce under acidic environment, the waste after use is also more intractable；Electret
Melt Blown Nonwoven Filter removes particulate pollutant in gas using electrostatic adsorption, has efficient low-resistance, and energy-saving safe is discarded
Object is easy to the advantages such as burning disposal, but electrostatic adsorption can the accumulation with particulate matter and the extension using the time and decline,
Strainability is caused to be deteriorated.Two kinds of material warps
After crossing long-time use, table inner layer can gather many particulate pollutants, and conventional means can not clean recycling, cause resource
Waste.And the efficient mistake to particulate pollutant can be both realized using microporous teflon membran filter material as the membrane filtration technique of representative
Filter, and recycling can be cleaned, use cost is greatly reduced, the objective of sustainable development is met.
Summary of the invention
The purpose of the present invention is being directed to existing problem, a kind of microporous teflon membran-melt-blown non-woven is provided
The method that material prepares filter composite highly effective filter material, according to the filter of this method production with composite highly effective filter material with excellent
Different protect oil performance, saturation oil absorbency are high, have the low filtration resistance of filtration efficiency, have good bursting strength and anti-tensile strong
Degree.
The present invention is achieved by the following technical solutions:
A method of filter composite highly effective filter material being prepared with microporous teflon membran-melt-blown non-woven material, it is special
Sign is, includes the following steps:
(1) preparation of the modified melt-blown non-woven material of spray coating method graphene:
Pretreated melt-blown non-woven material is fixed one jiao with tweezers, and fixes tweezers with iron stand, makes to be meltblown non-knit
Producing material material is perpendicular to the ground, first uses watering can even application a layer of adhesive, then rapid spraying graphite alkene suspension, with hot wind drum
Blower evaporates solvent flash baking, repeats to spray repeatedly, obtains graphene spraying melt-blown non-woven material；
(2) microporous teflon membran low-temperature plasma graft polymeric acrylic acid is modified:
The microporous teflon membran that Low Temperature Plasma Treating is crossed immerses in the acrylic monomers solution that concentration is 15-25%,
After logical nitrogen 10-20min deoxygenation, it is placed in 65-75 DEG C of constant water bath box and reacts 3-4h, the microporous barrier after graft polymerization is spent
Ionized water is cleaned by ultrasonic 4-6 times, 23-25h is extracted with deionized water in Soxhlet extractor, in 60-63 DEG C of vacuum oven
It dries to constant weight；
(3) composite highly effective filter material is prepared using non-woven hot-rolling mill combination process:
By the microporous teflon membran of gained modification of graft in (2) be uniformly laid on by defeated lace curtaining convey Lai (1) in
Gained graphene sprays on melt-blown non-woven material, forms two stacking zoariums, non-woven hot rolling system is then fed, by upper
The pressure and heat effect of heating roller and lower engraved roll form composite highly effective filter material.
Further, melt-blown non-woven material pre-processes in step (1): melt-blown non-woven material being put into distilled water and is washed
Only, it places into dehydrated alcohol after impregnating 5-10min, takes out and use distilled water repeated flushing, dried in 60-65 DEG C of baking oven standby
With；
Melt-blown non-woven material is polyester-polypropylene double component molten blown non-woven material, the body of polyester fiber and polypropylene fibre
Product is than being 30:70.
Further, graphene is placed in ultrasonic disperse 1-2h in 60mL dehydrated alcohol in step (1), prepares mass concentration
For the graphene suspension of 1mg/mL；Adhesive refers to that solid content is the aqueous polyurethane of 4-6%；The load number of plies of graphene is
14-16 layers.
Further, processing of the low temperature plasma to microporous teflon membran in step (2): polytetrafluoroethylene (PTFE) is micro-
Pore membrane is hung on glass supporter, is placed in the sample cavity of low temperature plasma instrument and is handled, and is argon gas, radio-frequency power in processing atmosphere
2-4min is handled under conditions of being 20Pa for 100W, vacuum degree.
Further, heat roller temperature is 145-155 DEG C in step (3), pressure is 175- between linear velocity 7-9m/min, roller
185N/cm2。
The present invention has the advantage that compared with prior art
(1) using melt-blown non-woven material as substrate, polyurethane is adhesive, and the graphene being distributed in ethanol solution is sprayed to
Melt-blown non-woven material surface with polyurethane binder prepares graphene spraying fusion-jetting polypropylene non-woven material, performance
Good protect oil performance out.
(2) induce the acrylic acid-grafted polymerization of hydrophilic monomer in microporous teflon membran by Low Temperature Plasma Treating
Surface makes it have wider application to improve the hydrophily on microporous teflon membran surface；At low temperature plasma
After reason, the free radical that microporous teflon membran surface generates is peroxy radical, and more stable, and the hydrophily of microporous barrier obtains
To significantly improving.
(3) double with graphene spraying polyester-polypropylene using the microporous teflon membran of modification of graft as filter layer
Component molten and jetted non-woven material is supporting layer, prepares high-efficiency filtering material using non-woven hot-rolling mill combination process, which has height
The characteristics of low filtration resistance of filter efficiency, washable cleaning recycle.
Specific embodiment
Embodiment 1
A method of filter composite highly effective filter material being prepared with microporous teflon membran-melt-blown non-woven material, it is special
Sign is, includes the following steps:
(1) preparation of the modified melt-blown non-woven material of spray coating method graphene:
Pretreated melt-blown non-woven material is fixed one jiao with tweezers, and fixes tweezers with iron stand, makes to be meltblown non-knit
Producing material material is perpendicular to the ground, first uses watering can even application a layer of adhesive, then rapid spraying graphite alkene suspension, with hot wind drum
Blower evaporates solvent flash baking, repeats to spray repeatedly, obtains graphene spraying melt-blown non-woven material；
(2) microporous teflon membran low-temperature plasma graft polymeric acrylic acid is modified:
The microporous teflon membran that Low Temperature Plasma Treating is crossed immerses in the acrylic monomers solution that concentration is 15%, leads to
It after nitrogen 10min deoxygenation, is placed in 65-75 DEG C of constant water bath box and reacts 3h, by the microporous barrier deionized water after graft polymerization
Ultrasonic cleaning 4 times extracts 23h with deionized water in Soxhlet extractor, dries in 60-63 DEG C of vacuum oven to constant weight；
(3) composite highly effective filter material is prepared using non-woven hot-rolling mill combination process:
By the microporous teflon membran of gained modification of graft in (2) be uniformly laid on by defeated lace curtaining convey Lai (1) in
Gained graphene sprays on melt-blown non-woven material, forms two stacking zoariums, non-woven hot rolling system is then fed, by upper
The pressure and heat effect of heating roller and lower engraved roll form composite highly effective filter material.
Further, melt-blown non-woven material pre-processes in step (1): melt-blown non-woven material being put into distilled water and is washed
Only, it places into dehydrated alcohol after impregnating 5min, takes out and use distilled water repeated flushing, be dried for standby in 60-65 DEG C of baking oven；
Melt-blown non-woven material is polyester-polypropylene double component molten blown non-woven material, the body of polyester fiber and polypropylene fibre
Product is than being 30:70.
Further, graphene is placed in ultrasonic disperse 1h in 60mL dehydrated alcohol in step (1), preparation mass concentration is
The graphene suspension of 1mg/mL；Adhesive refers to that solid content is 4% aqueous polyurethane；The load number of plies of graphene is 14 layers.
Further, processing of the low temperature plasma to microporous teflon membran in step (2): polytetrafluoroethylene (PTFE) is micro-
Pore membrane is hung on glass supporter, is placed in the sample cavity of low temperature plasma instrument and is handled, and is argon gas, radio-frequency power in processing atmosphere
2min is handled under conditions of being 20Pa for 100W, vacuum degree.
Further, heat roller temperature is 145-155 DEG C in step (3), pressure is 175N/ between linear velocity 7m/min, roller
cm2。
Embodiment 2
A method of filter composite highly effective filter material being prepared with microporous teflon membran-melt-blown non-woven material, it is special
Sign is, includes the following steps:
(1) preparation of the modified melt-blown non-woven material of spray coating method graphene:
Pretreated melt-blown non-woven material is fixed one jiao with tweezers, and fixes tweezers with iron stand, makes to be meltblown non-knit
Producing material material is perpendicular to the ground, first uses watering can even application a layer of adhesive, then rapid spraying graphite alkene suspension, with hot wind drum
Blower evaporates solvent flash baking, repeats to spray repeatedly, obtains graphene spraying melt-blown non-woven material；
(2) microporous teflon membran low-temperature plasma graft polymeric acrylic acid is modified:
The microporous teflon membran that Low Temperature Plasma Treating is crossed immerses in the acrylic monomers solution that concentration is 25%, leads to
It after nitrogen 20min deoxygenation, is placed in 65-75 DEG C of constant water bath box and reacts 4h, by the microporous barrier deionized water after graft polymerization
Ultrasonic cleaning 6 times extracts 25h with deionized water in Soxhlet extractor, dries in 60-63 DEG C of vacuum oven to constant weight；
(3) composite highly effective filter material is prepared using non-woven hot-rolling mill combination process:
By the microporous teflon membran of gained modification of graft in (2) be uniformly laid on by defeated lace curtaining convey Lai (1) in
Gained graphene sprays on melt-blown non-woven material, forms two stacking zoariums, non-woven hot rolling system is then fed, by upper
The pressure and heat effect of heating roller and lower engraved roll form composite highly effective filter material.
Further, melt-blown non-woven material pre-processes in step (1): melt-blown non-woven material being put into distilled water and is washed
Only, it places into dehydrated alcohol after proofing 10min, takes out and use distilled water repeated flushing, be dried for standby in 60-65 DEG C of baking oven；
Melt-blown non-woven material is polyester-polypropylene double component molten blown non-woven material, the body of polyester fiber and polypropylene fibre
Product is than being 30:70.
Further, graphene is placed in ultrasonic disperse 2h in 60mL dehydrated alcohol in step (1), preparation mass concentration is
The graphene suspension of 1mg/mL；Adhesive refers to that solid content is 6% aqueous polyurethane；The load number of plies of graphene is 16 layers.
Further, processing of the low temperature plasma to microporous teflon membran in step (2): polytetrafluoroethylene (PTFE) is micro-
Pore membrane is hung on glass supporter, is placed in the sample cavity of low temperature plasma instrument and is handled, and is argon gas, radio-frequency power in processing atmosphere
4min is handled under conditions of being 20Pa for 100W, vacuum degree.
Further, heat roller temperature is 145-155 DEG C in step (3), pressure is 185N/ between linear velocity 9m/min, roller
cm2。
Comparative example 1: this comparative example 1 compared with Example 1, in step (1) not to melt-blown non-woven material
Any modification is carried out, method and step in addition to this is all the same.
Comparative example 2: this comparative example 1 compared with Example 1, not to polytetrafluoroethylene (PTFE) micropore in step (2)
Film carries out any modification, and method and step in addition to this is all the same.
Control group
By the melt-blown non-woven material without any modification and the microporous teflon membran without any modification, adopt
Composite highly effective filter material is prepared with non-woven hot-rolling mill combination process.
In order to compare the performance of filter material produced by the present invention, to above-described embodiment 1, embodiment 2, comparative example 1, comparison
The blank filter material of Compound filtering material and control group prepared by embodiment 2, is tested for the property, test method is carried out according to standard:
As can be seen from the above table, any modification is not carried out to melt-blown non-woven material in comparative example 1, it is prepared
The protect oil performance of Compound filtering material is deteriorated, saturation oil absorbency reduces, and bursting strength and tensile strength are deteriorated；In comparative example 2 not
Any modification is carried out to microporous teflon membran, the filter of Compound filtering material is caused to imitate variation, filtration resistance increase, bursting strength and resist
Zhang Qiangdu is deteriorated；Illustrate that carrying out spray coating method graphene to melt-blown non-woven material in the present invention is modified, and helps to improve compound
Protect oil performance, bursting strength and the tensile strength of filter material, and low-temperature plasma graft polymerization is carried out to microporous teflon membran
It is modified, help to improve filter effect, drainage resistance and the bursting strength and tensile strength of Compound filtering material.
Have excellent protect oil performance, saturation oil absorbency high according to the Compound filtering material of the method for the present invention production, has and exceed
Low efficiency filtration resistance is filtered, there is good bursting strength and tensile strength, be a kind of Compound filtering material haveing excellent performance, can be used for filtering
In clear device, while realizing the effect of air filtering and water-oil separating, stability is good, and washable cleaning recycles, long service life.
Claims (5)
1. a kind of method for preparing filter composite highly effective filter material with microporous teflon membran-melt-blown non-woven material,
It is characterized in that, includes the following steps:
(1) preparation of the modified melt-blown non-woven material of spray coating method graphene:
Pretreated melt-blown non-woven material is fixed one jiao with tweezers, and fixes tweezers with iron stand, makes to be meltblown non-knit
Producing material material is perpendicular to the ground, first uses watering can even application a layer of adhesive, then rapid spraying graphite alkene suspension, with hot wind drum
Blower evaporates solvent flash baking, repeats to spray repeatedly, obtains graphene spraying melt-blown non-woven material；
(2) microporous teflon membran low-temperature plasma graft polymeric acrylic acid is modified:
The microporous teflon membran that Low Temperature Plasma Treating is crossed immerses in the acrylic monomers solution that concentration is 15-25%,
After logical nitrogen 10-20min deoxygenation, it is placed in 65-75 DEG C of constant water bath box and reacts 3-4h, the microporous barrier after graft polymerization is spent
Ionized water is cleaned by ultrasonic 4-6 times, 23-25h is extracted with deionized water in Soxhlet extractor, in 60-63 DEG C of vacuum oven
It dries to constant weight；
(3) composite highly effective filter material is prepared using non-woven hot-rolling mill combination process:
By the microporous teflon membran of gained modification of graft in (2) be uniformly laid on by defeated lace curtaining convey Lai (1) in
Gained graphene sprays on melt-blown non-woven material, forms two stacking zoariums, non-woven hot rolling system is then fed, by upper
The pressure and heat effect of heating roller and lower engraved roll form composite highly effective filter material.
2. according to claim 1 a kind of filter is prepared with multiple with microporous teflon membran-melt-blown non-woven material
The method for closing high-efficiency filtering material, which is characterized in that melt-blown non-woven material pre-processes in step (1):
Melt-blown non-woven material is put into distilled water and is cleaned, is placed into dehydrated alcohol after impregnating 5-10min, is taken out with distillation
Water repeated flushing is dried for standby in 60-65 DEG C of baking oven；
Melt-blown non-woven material is polyester-polypropylene double component molten blown non-woven material, the body of polyester fiber and polypropylene fibre
Product is than being 30:70.
3. according to claim 1 a kind of filter is prepared with multiple with microporous teflon membran-melt-blown non-woven material
The method for closing high-efficiency filtering material, which is characterized in that graphene is placed in ultrasonic disperse 1-2h in 60mL dehydrated alcohol in step (1),
Prepare the graphene suspension that mass concentration is 1mg/mL；
Adhesive refers to that solid content is the aqueous polyurethane of 4-6%；The load number of plies of graphene is 14-16 layers.
4. according to claim 1 a kind of filter is prepared with multiple with microporous teflon membran-melt-blown non-woven material
The method for closing high-efficiency filtering material, which is characterized in that processing of the low temperature plasma to microporous teflon membran in step (2):
Microporous teflon membran is hung on glass supporter, is placed in the sample cavity of low temperature plasma instrument and handles, is being handled
Atmosphere is that argon gas, radio-frequency power 100W, vacuum degree handle 2-4min under conditions of being 20Pa.
5. according to claim 1 a kind of filter is prepared with multiple with microporous teflon membran-melt-blown non-woven material
Close high-efficiency filtering material method, which is characterized in that in step (3) heat roller temperature be 145-155 DEG C, linear velocity 7-9m/min, roller
Between pressure be 175-185N/cm2。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810895796.XA CN109228569A (en) | 2018-08-08 | 2018-08-08 | A method of filter composite highly effective filter material is prepared with microporous teflon membran-melt-blown non-woven material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810895796.XA CN109228569A (en) | 2018-08-08 | 2018-08-08 | A method of filter composite highly effective filter material is prepared with microporous teflon membran-melt-blown non-woven material |
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| Publication Number | Publication Date |
|---|---|
| CN109228569A true CN109228569A (en) | 2019-01-18 |
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ID=65070688
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810895796.XA Withdrawn CN109228569A (en) | 2018-08-08 | 2018-08-08 | A method of filter composite highly effective filter material is prepared with microporous teflon membran-melt-blown non-woven material |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111330356A (en) * | 2020-03-09 | 2020-06-26 | 浙江东蒙医疗器械有限公司 | Filter element, preparation method thereof and mask |
| CN111907085A (en) * | 2020-07-28 | 2020-11-10 | 江苏康隆迪超净科技有限公司 | Novel melt-blown fabric coated PTFE composite material and preparation process thereof |
| GB2596293A (en) * | 2020-06-22 | 2021-12-29 | Univ Cranfield | A method and system for forming a fibre composite and a composite |
-
2018
- 2018-08-08 CN CN201810895796.XA patent/CN109228569A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111330356A (en) * | 2020-03-09 | 2020-06-26 | 浙江东蒙医疗器械有限公司 | Filter element, preparation method thereof and mask |
| WO2021179369A1 (en) * | 2020-03-09 | 2021-09-16 | 浙江东蒙医疗器械有限公司 | Filter element and preparation method therefor, and mask |
| GB2596293A (en) * | 2020-06-22 | 2021-12-29 | Univ Cranfield | A method and system for forming a fibre composite and a composite |
| CN111907085A (en) * | 2020-07-28 | 2020-11-10 | 江苏康隆迪超净科技有限公司 | Novel melt-blown fabric coated PTFE composite material and preparation process thereof |
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Application publication date: 20190118 |