CN106669444A - Polytetrafluoroethylene fiber membrane - Google Patents
Polytetrafluoroethylene fiber membrane Download PDFInfo
- Publication number
- CN106669444A CN106669444A CN201510764562.8A CN201510764562A CN106669444A CN 106669444 A CN106669444 A CN 106669444A CN 201510764562 A CN201510764562 A CN 201510764562A CN 106669444 A CN106669444 A CN 106669444A
- Authority
- CN
- China
- Prior art keywords
- vestibule
- porous material
- fiber film
- membrane materials
- uniform distribution
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/06—Organic material
- B01D71/30—Polyalkenyl halides
- B01D71/32—Polyalkenyl halides containing fluorine atoms
- B01D71/36—Polytetrafluoroethene
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Artificial Filaments (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
The invention provides a polytetrafluoroethylene fiber membrane which comprises a polytetrafluoroethylene material body, wherein the polytetrafluoroethylene is fibrous with the fiber diameter of greater than 200nm and smaller than or equal to 2000nm; the body has pore cavities with the pore size of 10-2000nm and cavity walls formed around the pore cavities in the three-dimensional space, and the pore cavities are uniformly distributed and are respectively perforated in the three-dimensional space; and the uniform distribution of the pore cavities refers to uniform distribution of the pore cavities in the porous material in any unit level of volume. The porosity is greater than or equal to 80%, the tensile strength is 25 N/mm<2> or above, and the water pressure resistance is 4kg/cm<2> or above. The invention provides a specific and definite measurement mode for uniform distribution of pore cavities of the polytetrafluoroethylene fiber membrane, and determines that the pore distribution uniformity of the porous material and multilevel structure thereof is measured by the small unit level of volume, so the porous structure is highly uniform, thereby ensuring the uniformity of various properties of the porous material.
Description
Technical field
The present invention relates to a kind of porous material, specifically a kind of polytetrafluoroethylfiber fiber film, are particularly well-suited to Membrane Materials.
Background technology
Solid containing certain amount hole, porous material, is a kind of material that network structure is made up of insertion or blind bore hole.For continuous media material, porous material typically has the advantages that relative density is low, specific strength is high, specific surface area is high, lightweight, sound insulation, heat-insulated, good penetrability.According to the difference of pore size, porous material can be divided into micropore again（Aperture is less than 2 nm）It is material, mesoporous（Aperture 2-50 nm）Material and macropore（Aperture is more than 50 nm）Material.
Porous material is distinguished by its material, can be divided into metal polyporous material and non-metal porous material.Non-metal porous material typically has the features such as specific surface area is big, density is little, thermal conductivity is little, relative density is little, porosity is big, in catalyst（Including carrier）, adsorbent, insulation, thermal insulation, sewage and exhaust-gas treatment, filter liquid and gas（Or even antibacterial）, light building material, the field such as environmental protection, improved soil, chemical industry is with a wide range of applications.Wherein, polytetrafluoroethylporous porous membrane material is with the performance such as its temperature stability, chemical stability, electric insulation, fire-retardant, self-lubricating, and its range of application is extremely wide.However, the randomness, scrambling due to pore structure, it still can not meet many application performances.
In many applications, it is required for its porous material itself uniform, its pore size, hole are evenly distributed so that performance uniformity, but in fact, many porous materials do not reach this requirement, its uniformity supplies；Despite material call oneself and reached higher uniformity, but its uniformity is still the uniformity under large volume yardstick, if being weighed with small size yardstick, such as take up an official post in material and take the said three-dimensional body that polylith volume is not more than a cubic centimetre, its quality is surveyed respectively, its uniformity coefficient difference is still very big, thus result in polytetrafluoroethylporous porous membrane material various performances such as intensity, elastic modelling quantity, flux etc. it is uneven, have a strong impact on its function.
The content of the invention
It is an object of the invention to provide architecture, controllable, high uniformity polytetrafluoroethylhollow hollow fiber.
The purpose of the present invention is realized by following measures：
A kind of polytetrafluoroethylfiber fiber film, including polytetrafluoroethylmaterial material body, politef is in threadiness, 200nm ＜ fibre diameters are≤2000nm, the cavity wall that body has the vestibule in 10nm～2000nm apertures and formed around vestibule in three dimensions, its vestibule is in uniform distribution, the three-dimensional insertion of each vestibule, and vestibule refers to each vestibule on the porous material under arbitrary unit level volume in uniform distribution in uniform distribution；Porosity of=80%, tensile strength 25N/mm2More than, water pressure resistance 4kg/cm2More than.
Specifically, above-mentioned polytetrafluoroethylfiber fiber film, vestibule with 200～2000nm apertures and the cavity wall formed around vestibule in three dimensions, arrange subordinate's vestibule of 10～150nm, vestibules at different levels each three-dimensional insertion and vestibule at different levels also insertion each other each other in cavity wall；Vestibule is in uniform distribution, and vestibule refers to each vestibule on the porous material under arbitrary unit level volume in uniform distribution in uniform distribution.
Specifically, above-mentioned unit level volume refers to cubic centimetre level or cubic millimeter level or more subsection level volume.
More specifically, above-mentioned vestibule is referred in uniform distribution be not more than each said three-dimensional body of a cubic centimetre and formed objects in the take up an official post volume that takes of the porous material, their quality is substantially suitable.
More specifically, above-mentioned quality quite refers to the said three-dimensional body for appointing the multiple volumes for taking to be not more than a cubic centimetre and formed objects on the porous material substantially, claim its quality respectively, the meansigma methodss of their quality are obtained, and arbitrary three-dimensional weight is not more than the 4% of said three-dimensional body mass average value relative to the absolute value of the bias of mass average value.
Further, the multistage material take up an official post the volume that takes be not more than one cubic millimeter formed objects said three-dimensional body, their quality are substantially suitable.
More specifically, the quality quite refers to the said three-dimensional body of the formed objects for appointing the multiple volumes for taking to be not more than a cubic millimeter on the porous material substantially, claim its quality respectively, the meansigma methodss of their quality are obtained, and arbitrary three-dimensional weight is not more than the 4% of said three-dimensional body mass average value relative to the absolute value of the bias of mass average value.
Preferably, above-mentioned polytetrafluoroethylfiber fiber film is made up of multistage porous material, and body is the vestibule being classified with material pore size, and the cavity wall in three dimensions around vestibule is constituted, subordinate's vestibule, vestibules at different levels each three-dimensional insertion and vestibule at different levels also insertion each other each other are set in cavity wall.More specifically, next stage porous material constitutes the cavity wall of upper level vestibule.The cavity wall of higher level's vestibule is constituted by the multistage porous material of its subordinate is compound, or is constituted by the porous materials at different levels of its subordinate are compound, and material can be caused to meet specific functional requirement.
Specifically, every grade of porous material of material body is a continuous structure body certainly.Maximum external boundary per one-level porous material is suitable with whole material body space boundary.I.e. every grade porous material can be present in body as the porous material of one-level independence, and with its physical and chemical performance alone.Such structure can cause the physical and chemical performance of porous materials at different levels difference, have different physical and chemical performances in the whole space of relatively-stationary material, better meet many functional requirements.
Beneficial effect
1., the invention provides a kind of polytetrafluoroethylfiber fiber film with loose structure, specify that its version, the hierarchy form of its vestibule and its uniformity structure can meet several functions demand.
2. the present invention is evenly distributed to the vestibule of polytetrafluoroethylfiber fiber film and proposes concrete and clear and definite metric form, specify that it is to get off to measure porous material and the pore size distribution uniformity of its multilevel hierarchy with the yardstick of subsection level volume, such loose structure is high uniformity, so as to ensure that the uniformity consistency of each performance of porous material.
3. polytetrafluoroethylfiber fiber film of the present invention is three-dimensional insertion, including every grade of hole three-dimensional communication, and hole at different levels mutually three-dimensional insertion, and connectivity is good, can fully meet the functional requirement of material.
4. the polytetrafluoroethylfiber fiber film of the present invention is the hydrophobic surface with multistage coarse structure.Surface water contact angle can reach more than 165 °.
5. polytetrafluoroethylstephanoporate stephanoporate fibrous membrane, the such as film properties such as pore size distribution, hierarchy, porosity, hole shape architectural characteristic, technique etc. and mechanical strength, water pressure resistance are relevant, the polytetrafluoroethylfiber fiber film of invention is without the need for supporting, form stable, thickness is controllable, it is applied to Membrane Materials process, flux>38L/m2H, more than 99.8%, tensile strength can reach 30N/mm to rejection2More than, water pressure resistance 5kg/cm2More than.
6. the polytetrafluoroethylfiber fiber film of the present invention, can be the film of the different shapes such as flat, tubular type, hollow fiber form or rolling and specification, and without the need for supporting, form stable, thickness is controllable.
Specific embodiment
Specific embodiment gives detailed embodiment premised on technical solution of the present invention, but protection scope of the present invention is not limited only to following embodiments.Without departing from change above-mentioned technological thought of the invention in the case of, according to the ordinary technical knowledge and/or customary means of this area, it is clear that the replacement or change of various ways can also be made, and all should be included within the scope of the present invention.
Embodiment
1
The polytetrafluoroethylfiber fiber film of the present invention, with second hole structure, wherein, there is the second level vestibule for being uniformly distributed, being mutually communicated in the cavity wall of the first order vestibule be uniformly distributed, being mutually communicated, and the also insertion each other each other of two-stage hole, the insertion is three-dimensional insertion.Every grade of porous material of material body is a continuous structure body certainly.Total effective drainage porosity is 80%, and fibre diameter is 500nm ± 20 nm, and macropore average pore size is 1000nm, there is the insertion aperture of average pore size 50nm in the cavity wall of macropore.
It is machined into method to take up an official post in the porous material said three-dimensional body of the same size for taking 9 10mm × 10mm × 10mm, its quality is tested with prunus mume (sieb.) sieb.et zucc. Teller-support benefit XP26 Microbalance balances, as a result it is as shown in table 1, wherein, it is expressed as a percentage relative to the absolute value of the bias of meansigma methodss, its value be relative to meansigma methodss absolute value of the bias divided by mass average value, as shown in Table 1, its mass deviation is not more than 4%.
Table 1
| Piece number | Quality（mg） | Relative to the absolute value of the bias of meansigma methodss（%） |
| 1 | 715.703 | 1.3% |
| 2 | 719.893 | 1.8% |
| 3 | 703.894 | 0.4% |
| 4 | 694.884 | 1.7% |
| 5 | 710.635 | 0.5% |
| 6 | 697.618 | 1.3% |
| 7 | 712.875 | 0.9% |
| 8 | 693.906 | 1.8% |
| 9 | 712.056 | 0.7% |
| Mass average value | 706.829 |
The preparation method of the porous polytetrafluoroethylene material is：
（1）By the ptfe emulsion of solid content 60%, particle diameter 50nm shitosans, 7%（Mass ratio）Dextran solution, 15wt% starch emulsions, uniform mixing, according to 55：30：8：4 mass ratioes, are made into spinning liquid；
（2）Under vacuum, politef precursor film is produced using electrospinning process in orientation electrostatic spinning fiber silk device；
（3）Precursor film is wound into 5 layers to cylinder hold mode, is sent in tube furnace and is sintered in vacuum or protective atmosphere, sintered and sintered using temperature programmed control zonal cooling, with the speed of 8 DEG C/min from room temperature to 170 DEG C, at 170 DEG C 50min is incubated；With the ramp of 8 DEG C/min to 280 DEG C, at 280 DEG C 60min is incubated；With the ramp of 2 DEG C/min to 360 DEG C, at 360 DEG C 20min is incubated；With the ramp of 8 DEG C/min to 400 DEG C, at 400 DEG C 100min is incubated.
（4）Temperature programmed control cooling after sintering, according to routine techniquess subsequent treatment, after extracting cylinder out, cuts off, and obtains the flat porous Teflon fibrous membrane with two-stage pore structure, and thickness is 170 μm.
, without the need for supporting, form stable, thickness is controllable, can be used for gas-liquid separation and Liquid liquid Separation for the polytetrafluoroethylfiber fiber film, realizes that Accurate Classification is filtered, such as it is applied to two-spot or many vigour（Liquid）The filtration of body, its flux is big, and rejection is high, is difficult to be contaminated（Such as the infiltration fouling membrane of multi-component liquid）, the advantage with efficient long-acting.170 ° of film water contact angle, tensile strength 30N/mm2, water pressure resistance 5.5kg/cm2。
Such as, in being applied to the Membrane Materials of acid/alcohol-water-non-volatile solute system, total flux can reach 40kg/m2More than h, in system non-volatile solute rejection more than 99.8%, volatilization alcohol/acid separation factor=[alcohol/acid mass fraction in distillate ×（1- material liquids alcohol/acid mass fraction）] ÷ [material liquid alcohol/acid mass fraction ×（1- distillates alcohol/acid mass fraction）] can reach more than 10.
Embodiment
2
The polytetrafluoroethylfiber fiber film of the present invention, with three-level pore structure, wherein, there is the second level vestibule for being uniformly distributed, being mutually communicated in the cavity wall of the first order vestibule be uniformly distributed, being mutually communicated, and the also insertion each other each other of two-stage hole, the insertion is three-dimensional insertion.Every grade of porous material of material body is a continuous structure body certainly.Total effective drainage porosity is 85%, and fibre diameter is 700 ± 20 nm, and macropore average pore size is 1500nm, there is the insertion second hole of average pore size 100nm in the cavity wall of macropore, there is the third level hole of average pore size 10nm insertion on the hole wall in second level hole.
It is machined into method to take up an official post in the porous material said three-dimensional body of the same size for taking 9 10mm × 10mm × 10mm, its quality is tested with prunus mume (sieb.) sieb.et zucc. Teller-support benefit XP26 Microbalance balances, as a result it is as shown in table 1, wherein, it is expressed as a percentage relative to the absolute value of the bias of meansigma methodss, its value be relative to meansigma methodss absolute value of the bias divided by mass average value, as shown in Table 2, its mass deviation is not more than 4%.
Table 2
| Piece number | Quality（mg） | Relative to the absolute value of the bias of meansigma methodss（%） |
| 1 | 548.212 | 2.0% |
| 2 | 529.859 | 1.5% |
| 3 | 549.788 | 2.2% |
| 4 | 520.253 | 3.2% |
| 5 | 537.879 | 0.0% |
| 6 | 544.277 | 1.2% |
| 7 | 538.267 | 0.1% |
| 8 | 523.269 | 2.7% |
| 9 | 547.444 | 1.8% |
| Mass average value | 537.694 |
The preparation method of the porous polytetrafluoroethylene material is：
（1）By PTFE fine powder end, the Polyethylene Glycol mixing that molecular weight is 1000,380 DEG C are heated with stirring to, persistently stir 60min, be quickly cooled to room temperature and crushed, carried out crushing at subzero degree Celsius and obtain polytetrafluoroethylgranule granule；
（2）Particle diameter is distributed as the emulsion of solid content 60% for 200nm polytetrafluoroethylgranule granules, by its with particle diameter 100nm shitosans, 7%（Mass ratio）Dextran solution, 15wt% starch emulsions, uniform mixing, according to 55：30：8：4 mass ratioes, are made into spinning liquid；
（3）Under vacuum, politef precursor film is produced using electrospinning process in orientation electrostatic spinning fiber silk device；
（4）Precursor film is wound into 5 layers to diameter 2mm cylinders hold mode, is sent in tube furnace and is sintered in vacuum or protective atmosphere, sintered and sintered using temperature programmed control zonal cooling, with the speed of 8 DEG C/min from room temperature to 170 DEG C, at 170 DEG C 50min is incubated；With the ramp of 8 DEG C/min to 290 DEG C, at 290 DEG C 60min is incubated；With the ramp of 2 DEG C/min to 360 DEG C, at 360 DEG C 20min is incubated；With the ramp of 8 DEG C/min to 400 DEG C, at 400 DEG C 100min is incubated.
（5）Temperature programmed control cooling after sintering, according to routine techniquess subsequent treatment, obtaining the porous with three-level pore structure is used for the polytetrafluoroethylfiber fiber film of Membrane Materials, and thickness is 182 μm, hollow-fibre membrane diameter 2mm.
, without the need for supporting, form stable, thickness is controllable, can be used for gas-liquid separation and Liquid liquid Separation for the polytetrafluoroethylfiber fiber film, realizes that Accurate Classification is filtered, such as it is applied to two-spot or many vigour（Liquid）The filtration of body, its flux is big, and rejection is high, is difficult to be contaminated（Such as the infiltration fouling membrane of multi-component liquid）, the advantage with efficient long-acting.172 ° of film water contact angle；Tensile strength 28N/mm2, water pressure resistance 6kg/cm2。
Such as, it is applied to polynary（Or mixing）In the Membrane Materials of alcohol/acid-water-non-volatile solute system, total flux can reach 42kg/m2More than h, in system non-volatile solute rejection more than 99.9%, volatilization alcohol/acid separation factor=[alcohol/acid mass fraction in distillate ×（1- material liquids alcohol/acid mass fraction）] ÷ [material liquid alcohol/acid mass fraction ×（1- distillates alcohol/acid mass fraction）] can reach more than 10.
Claims (11)
1. a kind of polytetrafluoroethylfiber fiber film for Membrane Materials, including polytetrafluoroethylmaterial material body, politef is in threadiness, 200nm ＜ fibre diameters are≤2000nm, the cavity wall that body has the vestibule in 10nm～2000nm apertures and formed around vestibule in three dimensions, its vestibule is in uniform distribution, the three-dimensional insertion of each vestibule, and vestibule refers to each vestibule on the porous material under arbitrary unit level volume in uniform distribution in uniform distribution；Porosity of=80%, tensile strength 25N/mm2More than, water pressure resistance 4kg/cm2More than.
2. the polytetrafluoroethylfiber fiber film of Membrane Materials is used for as claimed in claim 1, vestibule with 200～2000nm apertures and the cavity wall formed around vestibule in three dimensions, subordinate's vestibule of 10～150nm, vestibules at different levels each three-dimensional insertion and vestibule at different levels also insertion each other each other are set in cavity wall；Vestibule is in uniform distribution, and vestibule refers to each vestibule on the porous material under arbitrary unit level volume in uniform distribution in uniform distribution.
3. the polytetrafluoroethylfiber fiber film of Membrane Materials is used for as claimed in claim 1 or 2, and the unit level volume refers to cubic centimetre level or cubic millimeter level or more subsection level volume.
4. the polytetrafluoroethylfiber fiber film for Membrane Materials as described in claim 1,2 or 3, institute's vestibule is referred in uniform distribution and be not more than each said three-dimensional body of a cubic centimetre and formed objects in the take up an official post volume that takes of the porous material, and their quality is substantially suitable.
5. the polytetrafluoroethylfiber fiber film of Membrane Materials is used for as claimed in claim 4, the quality quite refers to the said three-dimensional body for appointing the multiple volumes for taking to be not more than a cubic centimetre and formed objects on the porous material substantially, claim its quality respectively, the meansigma methodss of their quality are obtained, and arbitrary three-dimensional weight is not more than the 4% of said three-dimensional body mass average value relative to the absolute value of the bias of mass average value.
6. the polytetrafluoroethylfiber fiber film for Membrane Materials as described in claim 1-5 is arbitrary, the multistage material take up an official post the volume that takes be not more than one cubic millimeter formed objects said three-dimensional body, their quality are substantially suitable.
7. the polytetrafluoroethylfiber fiber film of Membrane Materials is used for as claimed in claim 6, the quality quite refers to the said three-dimensional body of the formed objects for appointing the multiple volumes for taking to be not more than a cubic millimeter on the porous material substantially, claim its quality respectively, the meansigma methodss of their quality are obtained, and arbitrary three-dimensional weight is not more than the 4% of said three-dimensional body mass average value relative to the absolute value of the bias of mass average value.
8. the polytetrafluoroethylfiber fiber film for Membrane Materials as described in claim 1-7 is arbitrary, it is made up of multistage porous material, body is the vestibule being classified with material pore size, and the cavity wall in three dimensions around vestibule is constituted, subordinate's vestibule, vestibules at different levels each three-dimensional insertion and vestibule at different levels also insertion each other each other are set in cavity wall.
9. the polytetrafluoroethylfiber fiber film for Membrane Materials as described in claim 1-8 is arbitrary, next stage porous material constitutes the cavity wall of upper level vestibule.
10. the polytetrafluoroethylfiber fiber film for Membrane Materials as described in claim 1-8 is arbitrary, the cavity wall of higher level's vestibule is constituted by the multistage porous material of its subordinate is compound.
11. polytetrafluoroethylfiber fiber films for Membrane Materials as described in claim 1-8 is arbitrary, the cavity wall of higher level's vestibule is constituted by the porous materials at different levels of its subordinate are compound.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510764562.8A CN106669444A (en) | 2015-11-11 | 2015-11-11 | Polytetrafluoroethylene fiber membrane |
| PCT/CN2016/105278 WO2017080476A1 (en) | 2015-11-11 | 2016-11-10 | A polytetrafluoroethylene fiber film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510764562.8A CN106669444A (en) | 2015-11-11 | 2015-11-11 | Polytetrafluoroethylene fiber membrane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106669444A true CN106669444A (en) | 2017-05-17 |
Family
ID=58694450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510764562.8A Withdrawn CN106669444A (en) | 2015-11-11 | 2015-11-11 | Polytetrafluoroethylene fiber membrane |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN106669444A (en) |
| WO (1) | WO2017080476A1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109395606A (en) * | 2017-08-18 | 2019-03-01 | 重庆润泽医药有限公司 | A kind of polytetrafluoroethylene (PTFE) rolled film and preparation method thereof |
| CN109395598A (en) * | 2017-08-18 | 2019-03-01 | 重庆润泽医药有限公司 | A kind of polytetrafluoroethyltubular tubular membrane and preparation method thereof |
| CN109395610A (en) * | 2017-08-18 | 2019-03-01 | 重庆润泽医药有限公司 | A kind of polytetrafluoroethylene (PTFE) separation material |
| CN109395595A (en) * | 2017-08-18 | 2019-03-01 | 重庆润泽医药有限公司 | A kind of polytetrafluoroethylhollow hollow fiber membrane and preparation method thereof |
| CN109395599A (en) * | 2017-08-18 | 2019-03-01 | 重庆润泽医药有限公司 | A kind of polytetrafluoroethyltubular tubular membrane and preparation method thereof |
| CN109395596A (en) * | 2017-08-18 | 2019-03-01 | 重庆润泽医药有限公司 | A kind of polytetrafluoroethylhollow hollow fiber membrane and preparation method thereof |
| CN109402873A (en) * | 2017-08-18 | 2019-03-01 | 重庆润泽医药有限公司 | A kind of macromolecule semi-permeable material |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030062644A1 (en) * | 2001-03-19 | 2003-04-03 | Shinro Oyama | Polytetrafluoroethylene film and manufacture of same |
| CN103894077A (en) * | 2014-04-10 | 2014-07-02 | 江南大学 | Composite filter membrane with multidimensional pore structure and preparation method thereof |
| CN104906968A (en) * | 2014-03-13 | 2015-09-16 | 成都百途医药科技有限公司 | Teflon membrane and preparation method thereof |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101530750A (en) * | 2009-04-20 | 2009-09-16 | 浙江理工大学 | Preparation method of polytetrafluoroethylene superfine fiber porous membrane |
| EP3292905A1 (en) * | 2012-01-27 | 2018-03-14 | Zeus Industrial Products, Inc. | Electrospun porous media |
| CN102941025A (en) * | 2012-11-20 | 2013-02-27 | 浙江理工大学 | Preparation method of teflon hollow fiber membrane for membrane distillation |
| JP6097818B2 (en) * | 2013-03-21 | 2017-03-15 | 旭化成株式会社 | Porous hollow fiber membrane and method for producing porous hollow fiber membrane |
| CN104998556B (en) * | 2014-04-22 | 2018-02-23 | 四川百途环保材料科技有限公司 | A kind of preparation method of super-hydrophobic polytetrafluoroethylfiber fiber film |
-
2015
- 2015-11-11 CN CN201510764562.8A patent/CN106669444A/en not_active Withdrawn
-
2016
- 2016-11-10 WO PCT/CN2016/105278 patent/WO2017080476A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030062644A1 (en) * | 2001-03-19 | 2003-04-03 | Shinro Oyama | Polytetrafluoroethylene film and manufacture of same |
| CN104906968A (en) * | 2014-03-13 | 2015-09-16 | 成都百途医药科技有限公司 | Teflon membrane and preparation method thereof |
| CN103894077A (en) * | 2014-04-10 | 2014-07-02 | 江南大学 | Composite filter membrane with multidimensional pore structure and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 张建春等: "《织物防水透湿原理与层压织物生产技术》", 31 May 2003, 中国纺织出版社 * |
| 蒋克彬等: "《膜生物反应器的应用》", 29 February 2012, 中国石化出版社 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109395606A (en) * | 2017-08-18 | 2019-03-01 | 重庆润泽医药有限公司 | A kind of polytetrafluoroethylene (PTFE) rolled film and preparation method thereof |
| CN109395598A (en) * | 2017-08-18 | 2019-03-01 | 重庆润泽医药有限公司 | A kind of polytetrafluoroethyltubular tubular membrane and preparation method thereof |
| CN109395610A (en) * | 2017-08-18 | 2019-03-01 | 重庆润泽医药有限公司 | A kind of polytetrafluoroethylene (PTFE) separation material |
| CN109395595A (en) * | 2017-08-18 | 2019-03-01 | 重庆润泽医药有限公司 | A kind of polytetrafluoroethylhollow hollow fiber membrane and preparation method thereof |
| CN109395599A (en) * | 2017-08-18 | 2019-03-01 | 重庆润泽医药有限公司 | A kind of polytetrafluoroethyltubular tubular membrane and preparation method thereof |
| CN109395596A (en) * | 2017-08-18 | 2019-03-01 | 重庆润泽医药有限公司 | A kind of polytetrafluoroethylhollow hollow fiber membrane and preparation method thereof |
| CN109402873A (en) * | 2017-08-18 | 2019-03-01 | 重庆润泽医药有限公司 | A kind of macromolecule semi-permeable material |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2017080476A1 (en) | 2017-05-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106669444A (en) | Polytetrafluoroethylene fiber membrane | |
| CN106669443A (en) | Polytetrafluoroethylene fiber tubular film | |
| CN106669450A (en) | Polytetrafluoroethylene superfine hollow fiber membrane | |
| CN106669451A (en) | Polytetrafluoroethylene ultrafine fiber membrane | |
| CN106669442A (en) | PTFE (Polytetrafluoroethylene) fiber pipe type film | |
| CN106669453A (en) | Superfine polytetrafluoroethylene fiber pipe type membrane | |
| CN106669449A (en) | Polytetrafluoroethylene ultrafine fiber tubular membrane | |
| CN106669459A (en) | Polytetrafluoroethylene hollow fiber membrane | |
| CN106669460A (en) | Superfine polytetrafluoroethylene fiber pipe type membrane | |
| CN106669454A (en) | Polytetrafluoroethylene superfine fiber tubular membrane | |
| CN106669463A (en) | Polytetrafluoroethylene hollow fiber membrane | |
| CN106669462A (en) | Polytetrafluoroethylene fiber tube type membrane | |
| CN106669457A (en) | Polytetrafluoroethylene ultrafine fiber membrane | |
| CN106669445A (en) | Polytetrafluoroethylene ultrafine hollow fiber membrane | |
| CN106669467A (en) | Polytetrafluoroethylene superfine fiber membrane | |
| CN106674830A (en) | Porous non-metallic material | |
| CN106669456A (en) | Polytetrafluoroethylene fiber membrane | |
| CN106669458A (en) | Polytetrafluoroethylene fiber film | |
| CN106669465A (en) | Polytetrafluoroethylene hollow fiber membrane | |
| CN106669466A (en) | Superfine polytetrafluoroethylene fiber membrane | |
| CN106669464A (en) | Polytetrafluoroethylene ultrafine hollow fiber film | |
| CN106669441A (en) | Polytetrafluoroethylene fiber tubular film | |
| CN106669452A (en) | Polytetrafluoroethylene fiber membrane | |
| CN106669461A (en) | Polytetrafluoroethylene hollow fiber membrane | |
| CN106669455A (en) | Polytetrafluoroethylene ultra-fine hollow fiber membrane |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20170517 |
|
| WW01 | Invention patent application withdrawn after publication |