CN102641664A - Pouring method for polytetrafluoroethylene hollow fiber membrane assembly - Google Patents
Pouring method for polytetrafluoroethylene hollow fiber membrane assembly Download PDFInfo
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- CN102641664A CN102641664A CN2012101128272A CN201210112827A CN102641664A CN 102641664 A CN102641664 A CN 102641664A CN 2012101128272 A CN2012101128272 A CN 2012101128272A CN 201210112827 A CN201210112827 A CN 201210112827A CN 102641664 A CN102641664 A CN 102641664A
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- Prior art keywords
- polytetrafluoroethylene
- ptfe
- hollow fiber
- hollow
- fibre membrane
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- 229920001343 polytetrafluoroethylene Polymers 0.000 title claims abstract description 90
- 239000004810 polytetrafluoroethylene Substances 0.000 title claims abstract description 90
- -1 polytetrafluoroethylene Polymers 0.000 title claims abstract description 48
- 239000012528 membrane Substances 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000012510 hollow fiber Substances 0.000 title claims abstract description 24
- 239000003607 modifier Substances 0.000 claims abstract description 24
- 239000003822 epoxy resin Substances 0.000 claims abstract description 16
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 16
- 239000000835 fiber Substances 0.000 claims description 34
- 238000002360 preparation method Methods 0.000 claims description 19
- 239000004809 Teflon Substances 0.000 claims description 18
- 229920006362 Teflon® Polymers 0.000 claims description 18
- 239000002904 solvent Substances 0.000 claims description 13
- 239000007787 solid Substances 0.000 claims description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 7
- 238000007711 solidification Methods 0.000 claims description 6
- 230000008023 solidification Effects 0.000 claims description 6
- 229920001651 Cyanoacrylate Polymers 0.000 claims description 4
- 229920005749 polyurethane resin Polymers 0.000 claims description 4
- 238000010790 dilution Methods 0.000 claims description 3
- 239000012895 dilution Substances 0.000 claims description 3
- 150000002148 esters Chemical class 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 125000000468 ketone group Chemical group 0.000 claims 1
- 239000000126 substance Substances 0.000 abstract description 6
- 230000005855 radiation Effects 0.000 abstract description 4
- 230000006378 damage Effects 0.000 abstract description 3
- 230000007797 corrosion Effects 0.000 abstract description 2
- 238000005260 corrosion Methods 0.000 abstract description 2
- 230000003204 osmotic effect Effects 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 abstract 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 abstract 1
- 229910052708 sodium Inorganic materials 0.000 abstract 1
- 239000011734 sodium Substances 0.000 abstract 1
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 6
- URXNVXOMQQCBHS-UHFFFAOYSA-N naphthalene;sodium Chemical compound [Na].C1=CC=CC2=CC=CC=C21 URXNVXOMQQCBHS-UHFFFAOYSA-N 0.000 description 5
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- GUTLYIVDDKVIGB-OUBTZVSYSA-N Cobalt-60 Chemical compound [60Co] GUTLYIVDDKVIGB-OUBTZVSYSA-N 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 150000002576 ketones Chemical group 0.000 description 2
- 238000009832 plasma treatment Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000000108 ultra-filtration Methods 0.000 description 2
- 230000010148 water-pollination Effects 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 235000012489 doughnuts Nutrition 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000005251 gamma ray Effects 0.000 description 1
- 229920000578 graft copolymer Polymers 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000010841 municipal wastewater Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
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- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a pouring method for a polytetrafluoroethylene hollow fiber membrane assembly, which comprises the following steps of: carrying out osmotic treatment to a polytetrafluoroethylene hollow fiber membrane by an interfacial modifier, and then, pouring epoxy resin. Compared with methods, such as sodium and naphthalene processing, radiation grafting, and plasma processing, the pouring method for the polytetrafluoroethylene hollow fiber membrane assembly is simple and easy to realize, does not damage a polytetrafluoroethylene body and is convenient to produce and apply on a large scale. The interfacial modifier in the pouring method is used to ensure that a splicing position is free from cracks, needle eyes and bubbles, water, high temperature and chemical corrosion can be resisted, and the tightness is good.
Description
Technical field
The present invention relates to a kind of pouring procedure of hollow fiber film assembly, be specifically related to a kind of pouring procedure of polytetrafluoroethylene (PTFE) hollow fiber film assembly.
Background technology
The polytetrafluoroethylene (PTFE) hollow-fibre membrane can be widely used in the distillation of ultra filtration, film, film absorbs and film separation process such as membrane bioreactor, separating and the field such as make with extra care and have potential widely using value in municipal wastewater and advanced treatment of industrial waste water and reuse, drink water purifying, counter-infiltration pre-treatment, food and chemical products.The polytetrafluoroethylene (PTFE) hollow-fibre membrane has that film silk intensity is high, loading density is big, porosity is big, acid and alkali-resistance and advantages such as organic solvent, resistance to oxidation, in the ultra filtration separation, has remarkable advantages.
The polytetrafluoroethylene (PTFE) hollow-fibre membrane need be cast in it with adhesive before filtering use and process membrane module in the solids container.Because polytetrafluoroethylene (PTFE) structure height symmetry, degree of crystallinity is big, and the surface can be low, belongs to difficult adhesives.Generally need handle its surface, the processing method of appearance mainly contains: the processing of sodium naphthalene, radiation grafting and plasma treatment etc.Patent CN100475505C adopts sodium naphthalene solution that polytetrafluoroethylene (PTFE) is carried out surface treatment, but improves its wetability and viscosity.But sodium naphthalene formulations prepared from solutions is complicated, and storage request is high, needs oxygen barrier, waterproof, set off an explosion easily, and sodium naphthalene solution is big to polytetrafluoroethylene (PTFE) corrosivity, handles the back color and changes.Patent CN10194741A carries out pre-irradiation through the mode of cobalt 60 gamma rays irradiation to polytetrafluoroethylene film to be handled, and hydrophilic monomer is grafted on the polytetrafluoroethylene film, forms one deck and is prone to bonding graft polymers, improves its hydrophily.But cobalt 60 gamma-ray radiation sources can reduce polytetrafluoroethylene (PTFE) doughnut film strength and bigger to operator's damage, are difficult in suitability for industrialized production, using on a large scale.Patent CN101890314 adopts the low pressure glow discharge plasma that polytetrafluoroethylene film is carried out preliminary treatment, makes its surface produce active group, and graft acrylic acid forms hydrophilic layer again, improves its hydrophily.But Low Temperature Plasma Treating subtraction unit cost is higher, and its vacuum system does not solve because of the corrosion failure problem is also basic.
Summary of the invention
The object of the present invention is to provide a kind of pouring procedure of polytetrafluoroethylene (PTFE) hollow fiber film assembly, this method is through interface modifier the polytetrafluoroethylene (PTFE) hollow-fibre membrane to be carried out osmotic treated, after casting epoxy resin again.Through this method, can the polytetrafluoroethylene (PTFE) hollow-fibre membrane be cast in and process membrane module in the solids container, its abutting edge good seal can water-fast, high temperature resistant and resistance to chemical attack.
The technical scheme that the present invention adopts is:
Concrete, the pouring procedure of polytetrafluoroethylene (PTFE) hollow fiber film assembly of the present invention may further comprise the steps:
The preparation of a, interface modifier
Interface modifier is polyurethane resin, the epoxy resin behind a-cyanoacrylate or the solvent dilution;
The preparation of b, modified Teflon hollow-fibre membrane
The polytetrafluoroethylene (PTFE) hollow-fibre membrane is immersed in the described interface modifier 10 seconds～10 minutes, takes out, be prepared into the modified Teflon hollow-fibre membrane;
The cast of c, polytetrafluoroethylene (PTFE) hollow fiber film assembly
Adopt epoxy resin, described modified Teflon hollow-fibre membrane is cast in the solids container, solidification temperature is 20 ℃～80 ℃, and be 2 hours～48 hours hardening time, processes the polytetrafluoroethylene (PTFE) hollow fiber film assembly.
In said a step; Described interface modifier adopts the commercially available prod; The a-cyanoacrylate of 502 trades mark of producing like the Beijing Chemical Plant; The polyurethane resin of
CC1974C-B trade mark of BASF AG, the epoxy resin of
331 trades mark that LG-DOW is produced.
In said a step, described solvent is ketone, alcohol, esters solvent, and like butanone, ethanol, ethyl acetate, solvent and resin are prepared according to weight ratio 1: 0.01-0.5.
In said c step; Described epoxy resin adopts the commercially available prod, the epoxy resin of
331 trades mark of producing like LG-DOW.
Compare with background technology, the beneficial effect that the present invention has is:
(1) the present invention is that microporous architectural feature (seeing Fig. 1, shown in Figure 2) according to the polytetrafluoroethylene (PTFE) hollow-fibre membrane proposes.The polytetrafluoroethylene (PTFE) hollow-fibre membrane adopts the pulling method preparation, produces a large amount of micropore and fiber fines in the drawing process.Polytetrafluoroethylene (PTFE) belongs to difficult adhesives.Interface modifier among the present invention can promote jointing material in micropore, to permeate diffusion, thereby between polytetrafluoroethylene (PTFE) and casting resin (like epoxy resin), forms good bonding interface.With methods such as the processing of sodium naphthalene, radiation grafting and plasma treatment relatively, that the present invention has is simple and easy to do, the polytetrafluoroethylene (PTFE) body is not produced advantage such as destruction, is convenient to large-scale production and application.
(2) use of median surface of the present invention modifier can be guaranteed the abutting edge flawless, and the gentle bubble of no pinprick can be water-fast, high temperature resistant and resistance to chemical attack, good airproof performance.
Description of drawings
Fig. 1 is the stereoscan photograph cross-sectional view of polytetrafluoroethylene (PTFE) hollow-fibre membrane.
Fig. 2 is the stereoscan photograph outer surface figure of polytetrafluoroethylene (PTFE) hollow-fibre membrane.
The specific embodiment
Embodiment 1:
The preparation of a, interface modifier:
Interface modifier is a-cyanoacrylate (Beijing Chemical Plant produce 502);
The preparation of b, modified Teflon hollow-fibre membrane:
The polytetrafluoroethylene (PTFE) hollow-fibre membrane is immersed in 10 seconds in the described interface modifier, takes out, be prepared into the modified Teflon hollow-fibre membrane;
The cast of c, polytetrafluoroethylene (PTFE) hollow fiber film assembly:
Adopt epoxy resin (
331 that LG-DOW is produced); Described modified Teflon hollow-fibre membrane is cast in the solids container; Solidification temperature is 20 ℃; Be 48 hours hardening time, processes the polytetrafluoroethylene (PTFE) hollow fiber film assembly.
Embodiment 2:
The preparation of a, interface modifier:
Adopt ketones solvent (like butanone) and polyurethane resin (
CC1974C-B of BASF AG) according to weight ratio preparation in 1: 0.01, preparation interface modifier;
The preparation of b, modified Teflon hollow-fibre membrane:
The polytetrafluoroethylene (PTFE) hollow-fibre membrane is immersed in the described interface modifier 10 minutes, takes out, be prepared into the modified Teflon hollow-fibre membrane;
The cast of c, polytetrafluoroethylene (PTFE) hollow fiber film assembly:
Adopt epoxy resin (
331 that LG-DOW is produced); Described modified Teflon hollow-fibre membrane is cast in the solids container; Solidification temperature is 80 ℃; Be 2 hours hardening time, processes the polytetrafluoroethylene (PTFE) hollow fiber film assembly.
Embodiment 3:
The preparation of a, interface modifier:
Adopt alcohols solvent (like ethanol) and epoxy resin (
331 that LG-DOW is produced) according to weight ratio preparation in 1: 0.5, preparation interface modifier;
The preparation of b, modified Teflon hollow-fibre membrane:
The polytetrafluoroethylene (PTFE) hollow-fibre membrane is immersed in the described interface modifier 1 minute, takes out, be prepared into the modified Teflon hollow-fibre membrane;
The cast of c, polytetrafluoroethylene (PTFE) hollow fiber film assembly:
Adopt epoxy resin (
331 that LG-DOW is produced); Described modified Teflon hollow-fibre membrane is cast in the solids container; Solidification temperature is 40 ℃; Be 20 hours hardening time, processes the polytetrafluoroethylene (PTFE) hollow fiber film assembly.
Embodiment 4:
The preparation of a, interface modifier:
Adopt esters solvent (like ethyl acetate); Solvent and epoxy resin (
331 that LG-DOW is produced) are according to weight ratio preparation in 1: 0.3, preparation interface modifier;
The preparation of b, modified Teflon hollow-fibre membrane:
The polytetrafluoroethylene (PTFE) hollow-fibre membrane is immersed in the described interface modifier 5 minutes, takes out, be prepared into the modified Teflon hollow-fibre membrane;
The cast of c, polytetrafluoroethylene (PTFE) hollow fiber film assembly:
Adopt epoxy resin (
331 that LG-DOW is produced); Described modified Teflon hollow-fibre membrane is cast in the solids container; Solidification temperature is 60 ℃; Be 15 hours hardening time, processes the polytetrafluoroethylene (PTFE) hollow fiber film assembly.
Claims (3)
1. the pouring procedure of a polytetrafluoroethylene (PTFE) hollow fiber film assembly, the step of this method is following:
(1) preparation of interface modifier:
Interface modifier is an a-cyanoacrylate, or the polyurethane resin behind the solvent dilution, epoxy resin;
(2) preparation of modified Teflon hollow-fibre membrane:
The polytetrafluoroethylene (PTFE) hollow-fibre membrane is immersed in the interface modifier 10 seconds～10 minutes, takes out, be prepared into the modified Teflon hollow-fibre membrane;
(3) cast of polytetrafluoroethylene (PTFE) hollow fiber film assembly:
Adopt epoxy resin, described modified Teflon hollow-fibre membrane is cast in the solids container, solidification temperature is 20 ℃～80 ℃, and be 2 hours～48 hours hardening time, processes the polytetrafluoroethylene (PTFE) hollow fiber film assembly.
2. the pouring procedure of a kind of polytetrafluoroethylene (PTFE) hollow fiber film assembly according to claim 1 is characterized in that: described solvent is ketone, alcohol, esters solvent.
3. the pouring procedure of a kind of polytetrafluoroethylene (PTFE) hollow fiber film assembly according to claim 1 is characterized in that: described solvent dilution is prepared than 1:0.01～0.5 according to solvent and weight resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101128272A CN102641664A (en) | 2012-04-17 | 2012-04-17 | Pouring method for polytetrafluoroethylene hollow fiber membrane assembly |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101128272A CN102641664A (en) | 2012-04-17 | 2012-04-17 | Pouring method for polytetrafluoroethylene hollow fiber membrane assembly |
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| Publication Number | Publication Date |
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| CN102641664A true CN102641664A (en) | 2012-08-22 |
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| CN2012101128272A Pending CN102641664A (en) | 2012-04-17 | 2012-04-17 | Pouring method for polytetrafluoroethylene hollow fiber membrane assembly |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103464008A (en) * | 2013-09-05 | 2013-12-25 | 浙江理工大学 | Pouring method of polytetrafluoroethylene hollow fiber membrane module |
| CN105833733A (en) * | 2016-04-28 | 2016-08-10 | 山东金汇膜科技股份有限公司 | Prepackaging method for polytetrafluoroethylene hollow fibrous microporous membrane |
| CN105854639A (en) * | 2016-05-16 | 2016-08-17 | 国家海洋局天津海水淡化与综合利用研究所 | Pouring method of polytetrafluoroethylene hollow fiber membrane module |
| CN107551816A (en) * | 2017-10-30 | 2018-01-09 | 贵州省材料技术创新基地 | The casting method of polytetrafluoroethylhollow hollow fiber membrane component |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH044024A (en) * | 1990-04-19 | 1992-01-08 | Sumitomo Electric Ind Ltd | Hollow fiber-like porous separating membrane element and production thereof |
| US20060014274A1 (en) * | 2002-09-09 | 2006-01-19 | Saxonia Bio Tec Gmbh | Fiber cassette and modularly designed cassette system |
| CN1958133A (en) * | 2006-09-30 | 2007-05-09 | 浙江大学 | Method for preparing infiltration vaporization membrane module of hollow fiber |
| CN102210976A (en) * | 2010-04-07 | 2011-10-12 | 深圳市诚德来实业有限公司 | Ultrafiltration membrane module end-seal casting method and equipment |
| CN102212330A (en) * | 2010-04-07 | 2011-10-12 | 深圳市诚德来实业有限公司 | Epoxy resin adhesive for hollow fiber membrane end sealing as well as preparation and application methods thereof |
-
2012
- 2012-04-17 CN CN2012101128272A patent/CN102641664A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH044024A (en) * | 1990-04-19 | 1992-01-08 | Sumitomo Electric Ind Ltd | Hollow fiber-like porous separating membrane element and production thereof |
| US20060014274A1 (en) * | 2002-09-09 | 2006-01-19 | Saxonia Bio Tec Gmbh | Fiber cassette and modularly designed cassette system |
| CN1958133A (en) * | 2006-09-30 | 2007-05-09 | 浙江大学 | Method for preparing infiltration vaporization membrane module of hollow fiber |
| CN102210976A (en) * | 2010-04-07 | 2011-10-12 | 深圳市诚德来实业有限公司 | Ultrafiltration membrane module end-seal casting method and equipment |
| CN102212330A (en) * | 2010-04-07 | 2011-10-12 | 深圳市诚德来实业有限公司 | Epoxy resin adhesive for hollow fiber membrane end sealing as well as preparation and application methods thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103464008A (en) * | 2013-09-05 | 2013-12-25 | 浙江理工大学 | Pouring method of polytetrafluoroethylene hollow fiber membrane module |
| CN105833733A (en) * | 2016-04-28 | 2016-08-10 | 山东金汇膜科技股份有限公司 | Prepackaging method for polytetrafluoroethylene hollow fibrous microporous membrane |
| CN105854639A (en) * | 2016-05-16 | 2016-08-17 | 国家海洋局天津海水淡化与综合利用研究所 | Pouring method of polytetrafluoroethylene hollow fiber membrane module |
| CN107551816A (en) * | 2017-10-30 | 2018-01-09 | 贵州省材料技术创新基地 | The casting method of polytetrafluoroethylhollow hollow fiber membrane component |
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Application publication date: 20120822 |