CN102294181A - Dual polyfluortetraethylene-repellent micro-porous films - Google Patents
Dual polyfluortetraethylene-repellent micro-porous films Download PDFInfo
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- CN102294181A CN102294181A CN2010102070867A CN201010207086A CN102294181A CN 102294181 A CN102294181 A CN 102294181A CN 2010102070867 A CN2010102070867 A CN 2010102070867A CN 201010207086 A CN201010207086 A CN 201010207086A CN 102294181 A CN102294181 A CN 102294181A
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- microporous teflon
- refuse
- oil
- polyfluortetraethylene
- teflon membran
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Abstract
The invention discloses a preparation method of dual polyfluortetraethylene-repellent micro-porous films. The method comprises the following steps of: mixing a fluorine-containing acrylic ester copolymer with dispersed polyfluortetraethylene resin powder; and performing blanking, extruding, rolling, degreasing, bidirectional stretching, curing and the like. The dual polyfluortetraethylene-repellent micro-porous films prepared with the method have the water repellency over 90 percent and the oil repellency over grade 3. The micro-porous films can be applied to the atmospheric dust removing industry under the steam-containing and oil-mist-containing working condition, and have remarkable economic benefit and social benefit.
Description
Technical field
The present invention relates to the microporous membrane that a kind of polytetrafluoroethylene (PTFE) is produced, can refuse water, refuse oil.
Background technology
Along with people to the improving constantly of living environment quality requirement, the air ambient standard is all progressively being improved in countries in the world.Common in-depth filtration material has been difficult to reach discharge standard.Microporous teflon membran peritonaeum filtrate, changed the performance of traditional in-depth filtration material, make bag-type dusting and tubular Foldable air purification aspect that qualitative leap arranged, the filter efficiency of the micron particles thing of particularly harmful PM2.5 can reach more than 99.99%.Become surface filtration from in-depth filtration, refuse oily filter efficiency height, running resistance steadily, advantages such as easy-to-clean ash, air flux height, long service life.But a deadly defect using the midfield film filtering material in atmosphere environmental protection dedusting field is a lipophile.Therefore the overlay film filter bag still needs to carry out the precoating ash before use.And as a rule, inevitably contain greasy dirt in the body of dust-laden.Greasy dirt is in case in the filter bag surface attachment, and dust will be assembled fast on every side, makes the part lose filter effect and is difficult to remove, and causes that filter bag is too fast to be scrapped.Product of the present invention reaches and not only refuses water but also refuse oily two effects of refusing under the prerequisite that keeps former microporous teflon membran structure and performance.
Summary of the invention
For overcoming above defective, the invention provides a kind of novel two prescription and production technologies of refusing microporous teflon membran.
The technical solution adopted for the present invention to solve the technical problems is:
Two microporous teflon membrans of refusing, its component and weight proportion are:
1 part in polytetrafluoroethyldispersion dispersion resin powder
Fluorine-containing copolymer 0.05-0.1 part
Organic alcohol ketone 0.1-0.3 part
Extrusion aid 0.2-0.3 part
The degree of crystallinity of described polytetrafluoroethyldispersion dispersion resin powder is 95-99%, molecular weight 3,000,000-1,200 ten thousand, described fluorine-containing copolymer is the reactant of N-methyl, N-ethoxy perfluoro octyl sulfonic acid amine and acrylic acid copolymer, described organic alcohol ketone is any one or the mixture in methyl alcohol, ethanol, isopropyl alcohol, acetone, the butanone, and described extrusion aid is any one or the mixture in white oil, aviation kerosine, degreasing kerosene, the paraffin.
Two preparation methods that refuse microporous teflon membran comprise:
1) polytetrafluoroethyldispersion dispersion resin is crossed 8 mesh sieves after, add behind the extrusion aid standby;
2) the fluorine-containing copolymer is dissolved with mailing alcohol ketone solution, and left standstill 2 hours after measuring wiring solution-forming in accordance with regulations;
3) with 2) solution after leaving standstill under agitation adds 1) in;
4), under 60 ℃, left standstill 10-12 hour with above-mentioned mixed material;
5) with the material of said mixture, Zai Zhi Pi machine Zhong Zhi Pi ， Zhi Pi pressure 0.35Mpa-0.5Mpa keeps after 3 minutes slowly pressure release;
6) Pi is put into hydraulic pressure, the heap press extrude slivering, pressure fuel pump 64Kgf/cm
2, compression ratio 30-100;
7) strip is left standstill 30 minutes in 50 ℃ of hot-airs or water-bath after, two-roll calendar 75 ℃, 15-25 rice/minute speed under, roll into sound stage width 12-26cm, thickness is the oil-containing base band of 10-15 silk;
8) the oil-containing base band is carried out longitudinal stretching after sloughing extrusion aid and solvent under 160-180 ℃ the condition, draft temperature is 270-350 ℃, and draw ratio is 4-15 times;
9) base band behind the longitudinal stretching is stretched on horizontal membrane and solidify, draft temperature is that 120-230 ℃ of solidification temperature is 330-400 ℃, lateral velocity be 5-15 rice/minute, draw ratio be 8-25 doubly.
The present invention adopts the fluorine-containing copolymer that the polytetrafluoroethyldispersion dispersion resin powder is carried out blending and modifying, method is simple, be convenient to carry out suitability for industrialized production, the microporous teflon membran of producing has two effects of refusing, in fenestra, form evenly lasting two layers of refusing with the film surface, strengthen the oily water repellency of refusing of microporous teflon membran effectively, enlarged the range of application of microporous teflon membran, had economic benefit and social benefit significantly.
The specific embodiment
Embodiment one
1) adds extrusion aid after the F106 polytetrafluorethylepowder powder 2kg that selects for use Daikin company to produce crosses 8 mesh sieves, aviation kerosine 600g is standby, fluorine-containing copolymer 1 00g is dissolved in 600g solvent (ethanol: acetone=1: 1), the solution and the above-mentioned spares that leave standstill after 2 hours mix, under 60 ℃, left standstill 10 hours.
2) with 1) put into Zhi Pi machine Zhi Pi ， Zhi Pi pressure 0.35Mpa, keep after 3 minutes slowly pressure release;
3) Pi is put into hydraulic pressure, the heap press extrude slivering, pressure fuel pump 64Kgf/cm
2, extruded velocity 180mm/min, compression ratio 70;
4) strip is left standstill 30 minutes in 50 ℃ of hot-airs or water-bath after, under calendering on 70 ℃ of two-wheeled calenders, 18 meters/minute speed, roll into sound stage width 16cm, thickness is 12 oil-containing base band;
5) the oil-containing base band is carried out longitudinal stretching after sloughing extrusion aid and solvent under 160 ℃ the condition, draft temperature is 270 ℃, and draw ratio is 8 times;
6) base band behind the longitudinal stretching is stretched on horizontal membrane and solidify, draft temperature is that 130 ℃ of solidification temperatures are 330 ℃, and lateral velocity is 10 meters/minute, and draw ratio is 16 times.
Two refuse microporous teflon membran through what said process was made, thickness is that 1 Air permenbility is 60m
2/ s, water repellency 90 minutes, 3 grades of oil repellents.
Embodiment two
1) adds extrusion aid after selecting for use 3309 polytetrafluorethylepowder powder 2kg of du pont company production to cross 8 mesh sieves, aviation kerosine 600g is standby, fluorine-containing copolymer 1 50g is dissolved in 600g solvent (ethanol: acetone=1: 1), the solution and the above-mentioned spares that leave standstill after 2 hours mix, under 60 ℃, left standstill 12 hours.
2) with 1) put into Zhi Pi machine Zhi Pi ， Zhi Pi pressure 0.5Mpa, keep after 3 minutes slowly pressure release;
3) Pi is put into hydraulic pressure, the heap press extrude slivering, pressure fuel pump 64Kgf/cm
2, extruded velocity 200mm/min, compression ratio 50;
4) strip is left standstill 30 minutes in 50 ℃ of hot-airs or water-bath after, under calendering on 70 ℃ of two-wheeled calenders, 16 meters/minute speed, roll into sound stage width 24cm, thickness is 10 oil-containing base band;
5) the oil-containing base band is carried out longitudinal stretching after sloughing extrusion aid and solvent under 180 ℃ the condition, draft temperature is 320 ℃, and draw ratio is 6 times;
6) base band behind the longitudinal stretching is stretched on horizontal membrane and solidify, draft temperature is that 160 ℃ of solidification temperatures are 340 ℃, and lateral velocity is 10 meters/minute, and draw ratio is 14 times.
Two refuse microporous teflon membran through what said process was made, thickness is that 2 Air permenbilities are 45m
2/ s, water repellency 95 minutes, 3 grades of oil repellents.
Claims (6)
1. two microporous teflon membrans of refusing, its component and weight proportion are:
1 part in polytetrafluoroethyldispersion dispersion resin powder
Fluorine-containing copolymer 0.05-0.1 part
Organic alcohol ketone 0.1-0.3 part
Extrusion aid 0.2-0.3 part.
2. refuse microporous teflon membran, it is characterized in that the degree of crystallinity of described polytetrafluoroethyldispersion dispersion resin powder is 95-99%, molecular weight 3,000,000-1,200 ten thousand for according to claim 1 pair.
3. refuse microporous teflon membran, it is characterized in that described fluorine-containing copolymer is the reactant of N-methyl, N-ethoxy perfluoro octyl sulfonic acid amine and acrylic acid copolymer for according to claim 1 pair.
4. according to claim 1ly two refuse microporous teflon membran, it is characterized in that, described organic alcohol ketone is any one or the mixture in methyl alcohol, ethanol, isopropyl alcohol, acetone, the butanone.
5. according to claim 1ly two refuse microporous teflon membran, it is characterized in that, described extrusion aid is any one or the mixture in white oil, aviation kerosine, degreasing kerosene, the paraffin.
6. two preparation method who refuses microporous teflon membran according to claim 1 is characterized in that, comprising:
1) polytetrafluoroethyldispersion dispersion resin is crossed 8 mesh sieves after, add behind the extrusion aid standby;
2) the fluorine-containing copolymer is dissolved with organic alcohol ketone solution, and left standstill 2 hours after measuring wiring solution-forming in accordance with regulations;
3) with 2) solution after leaving standstill under agitation adds 1) in;
4), under 60 ℃, left standstill 10-12 hour with above-mentioned mixed material;
5) with the material of said mixture, Zai Zhi Pi machine Zhong Zhi Pi ， Zhi Pi pressure 0.35Mpa-0.5Mpa keeps after 3 minutes slowly pressure release;
6) Pi is put into hydraulic pressure, the heap press extrude slivering, pressure fuel pump 64Kgf/cm
2, compression ratio 30-100;
7) strip is left standstill 30 minutes in 50 ℃ of hot-airs or water-bath after, two-roll calendar 75 ℃, 15-25 rice/minute speed under, roll into sound stage width 12-26cm, thickness is the oil-containing base band of 10-15 silk;
8) the oil-containing base band is carried out longitudinal stretching after sloughing extrusion aid and solvent under 160-180 ℃ the condition, draft temperature is 270-350 ℃, and draw ratio is 4-15 times;
9) base band behind the longitudinal stretching is stretched on horizontal membrane and solidify, draft temperature is that 120-230 ℃ of solidification temperature is 330-400 ℃, lateral velocity be 5-15 rice/minute, draw ratio be 8-25 doubly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102070867A CN102294181A (en) | 2010-06-23 | 2010-06-23 | Dual polyfluortetraethylene-repellent micro-porous films |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102070867A CN102294181A (en) | 2010-06-23 | 2010-06-23 | Dual polyfluortetraethylene-repellent micro-porous films |
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| CN102294181A true CN102294181A (en) | 2011-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010102070867A Pending CN102294181A (en) | 2010-06-23 | 2010-06-23 | Dual polyfluortetraethylene-repellent micro-porous films |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102527248A (en) * | 2012-01-06 | 2012-07-04 | 湖州森诺氟材料科技有限公司 | Preparation method of photocatalytic antimicrobial polytetrafluoroethylene microporous membrane |
| US11702494B2 (en) | 2017-06-20 | 2023-07-18 | Zhejiang Hyproof Technology Co., Ltd | Fluorine-containing mixture material and fluorine-containing super-oleophobic microporous membrane using same as raw material, and preparation method therefor and use thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1102748A (en) * | 1993-01-25 | 1995-05-17 | 大金工业株式会社 | Polytetrafluoroethylene porous film and method for manufacturing the same |
| CN1449302A (en) * | 2000-08-30 | 2003-10-15 | Pti先进过滤公司 | Modified polymer having improved properties and process for manufacturing same |
| CN101497703A (en) * | 2008-01-29 | 2009-08-05 | 通用电气公司 | Process to increase the oleophobicity of PTFE, and resulting oleophobic articles |
-
2010
- 2010-06-23 CN CN2010102070867A patent/CN102294181A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1102748A (en) * | 1993-01-25 | 1995-05-17 | 大金工业株式会社 | Polytetrafluoroethylene porous film and method for manufacturing the same |
| CN1449302A (en) * | 2000-08-30 | 2003-10-15 | Pti先进过滤公司 | Modified polymer having improved properties and process for manufacturing same |
| CN101497703A (en) * | 2008-01-29 | 2009-08-05 | 通用电气公司 | Process to increase the oleophobicity of PTFE, and resulting oleophobic articles |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102527248A (en) * | 2012-01-06 | 2012-07-04 | 湖州森诺氟材料科技有限公司 | Preparation method of photocatalytic antimicrobial polytetrafluoroethylene microporous membrane |
| CN102527248B (en) * | 2012-01-06 | 2015-09-16 | 湖州森诺氟材料科技有限公司 | The preparation method of photocatalytic antimicrobial polytetrafluoroethylmicroporous microporous membrane |
| US11702494B2 (en) | 2017-06-20 | 2023-07-18 | Zhejiang Hyproof Technology Co., Ltd | Fluorine-containing mixture material and fluorine-containing super-oleophobic microporous membrane using same as raw material, and preparation method therefor and use thereof |
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Application publication date: 20111228 |