CN107551816A - The casting method of polytetrafluoroethylhollow hollow fiber membrane component - Google Patents
The casting method of polytetrafluoroethylhollow hollow fiber membrane component Download PDFInfo
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- CN107551816A CN107551816A CN201711052937.3A CN201711052937A CN107551816A CN 107551816 A CN107551816 A CN 107551816A CN 201711052937 A CN201711052937 A CN 201711052937A CN 107551816 A CN107551816 A CN 107551816A
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- hollow fiber
- fiber membrane
- polytetrafluoroethylhollow hollow
- membrane component
- polytetrafluoroethylhollow
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- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
The invention discloses a kind of casting method of polytetrafluoroethylhollow hollow fiber membrane component.After the present invention is handled polytetrafluoroethylhollow hollow fiber membrane using Surface Treatment with Plasma technology, the polytetrafluoroethylhollow hollow fiber membrane both ends after processing are coated processing with the PVA aqueous solution again, then it is baked to, inserted after finally dry polytetrafluoroethylhollow hollow fiber membrane is blocked with fluid sealant in casting shell, cast to obtain polytetrafluoroethylhollow hollow fiber membrane component with epoxy resin adhesive.Such method mainly solves the problems, such as that easy running causes seepage to polytetrafluoroethylhollow hollow fiber membrane component in use, while avoids in casting cycle using dangerous higher sodium naphthalene solution.
Description
Technical field
The present invention relates to technical field of polymer materials, especially a kind of casting of polytetrafluoroethylhollow hollow fiber membrane component
Method.
Background technology
Polytetrafluoroethylene (PTFE) is the high polymer material of excellent combination property, has an excellent chemical stability, heat endurance and
Mechanical stability, before polytetrafluoroethylhollow hollow fiber membrane is widely used in fields such as Aero-Space, petrochemical industry, machineries
Scape.Polytetrafluoroethylhollow hollow fiber membrane causes it poor with the epoxy resin adhesive affinity of routine, glued because its surface energy is extremely low
Knotting strength is low, causes polytetrafluoroethylhollow hollow fiber membrane component in use, and easy running causes seepage.Therefore, poly- four
The casting problems demand of PVF hollow fiber film assembly solves.As CN201010231157 using epoxy resin adhesive and gathers
The mode of urethane adhesive mixing second casting carries out membrane module preparation, but it uses sodium naphthalene solution to handle film wire, sodium
Naphthalene solution prepares complicated and dangerous, highly corrosive, the easy generation security incident in preprocessing process.Such as
CN201610323129 is surface-treated by plasma silk processing unit under atmospheric pressure to polytetrafluoroethylhollow hollow fiber membrane,
The cast of membrane module is carried out using epoxy resin adhesive or adhesive for polyurethane afterwards, its only with plasma to film process,
Film wire has ageing after processing, influences adhesive effect.
The content of the invention
It is an object of the present invention to provide a kind of casting method of polytetrafluoroethylhollow hollow fiber membrane component, it is mainly solved
Polytetrafluoroethylhollow hollow fiber membrane component the problem of easy running causes seepage in use, while avoid in casting cycle
It is middle to use dangerous higher sodium naphthalene solution.
What the present invention was realized in：The casting method of polytetrafluoroethylhollow hollow fiber membrane component, comprises the following steps：
1) polytetrafluoroethylhollow hollow fiber membrane is handled by Surface Treatment with Plasma technology；
2) by the polytetrafluoroethylhollow hollow fiber membrane after processing it is concordant after, at the 5-10cm of film wire both ends, with the PVA aqueous solution
It is coated processing；
3) polytetrafluoroethylhollow hollow fiber membrane Jing Guo coating processing is dried at 20-60 DEG C, drying time 12-48h,
Dry polytetrafluoroethylhollow hollow fiber membrane is arranged concordantly, blocked with fluid sealant；
4) polytetrafluoroethylhollow hollow fiber membrane after end-blocking is vertically inserted in casting shell, cast with epoxy resin adhesive
Obtain polytetrafluoroethylhollow hollow fiber membrane component.
The described PVA aqueous solution is：Xiang Shuizhong adds mass fraction 1%-5% PVA, after PVA is completely dissolved, adds
Mass percent is that 25% glutaraldehyde and 0.5mol/L hydrochloric acid are crosslinked..
In step 1), the processing voltage that Surface Treatment with Plasma technology is handled polytetrafluoroethylhollow hollow fiber membrane is
110-220V, electric discharge spacing are 5-20mm, processing time 10s-1h.
In step 4), the solidification temperature of epoxy resin adhesive casting polytetrafluoroethylhollow hollow fiber membrane component is 15-30
DEG C, hardening time 8-24h, casting depth is 5-10cm.
Compared with prior art, the present invention is entered using Surface Treatment with Plasma technology to polytetrafluoroethylhollow hollow fiber membrane
Go after handling, then the polytetrafluoroethylhollow hollow fiber membrane both ends after processing are coated processing with the PVA aqueous solution, then by it
Drying, inserted after finally dry polytetrafluoroethylhollow hollow fiber membrane is blocked with fluid sealant in casting shell, use asphalt mixtures modified by epoxy resin
Fat adhesive casts to obtain polytetrafluoroethylhollow hollow fiber membrane component.Such method mainly solves polytetrafluoroethylhollow hollow fiber
Membrane module the problem of easy running causes seepage in use, while avoid in casting cycle using dangerous higher
Sodium naphthalene solution.
Embodiment
Embodiments of the invention 1：The casting method of polytetrafluoroethylhollow hollow fiber membrane component, it is characterised in that including such as
Lower step：
1) it is 220V to carry out processing processing voltage to polytetrafluoroethylhollow hollow fiber membrane by Surface Treatment with Plasma technology,
Electric discharge spacing is 10mm, processing time 30s；
2) by the polytetrafluoroethylhollow hollow fiber membrane after processing it is concordant after, at the 5-10cm of film wire both ends, with the PVA aqueous solution
Processing is coated, the PVA aqueous solution is the PVA for accounting for water quality 1% using being added into water, after PVA is completely dissolved, is added
Mass fraction be 25% glutaraldehyde and 0.5mol/L hydrochloric acid carry out crosslinking acquisition；
3) polytetrafluoroethylhollow hollow fiber membrane Jing Guo coating processing is dried into (drying time 24h) at 25 DEG C, will be dry
Dry polytetrafluoroethylhollow hollow fiber membrane arranges concordantly, is blocked with fluid sealant；
4) polytetrafluoroethylhollow hollow fiber membrane after end-blocking is vertically inserted in casting shell, poured with epoxy resin adhesive
Casting, solidification temperature are 20 DEG C, hardening time 8h, and casting depth is 5cm, finally obtains polytetrafluoroethylhollow hollow fiber membrane group
Part.
Stretching between the polytetrafluoroethylhollow hollow fiber membrane component film wire and epoxy resin adhesive that are obtained to embodiment 1
Adhesion strength is tested, and test condition is spacing 100mm, and rate of extension 50mm/min, film wire is from epoxy resin adhesive
Tensile load during running is 81.25N.
Embodiments of the invention 2：The casting method of polytetrafluoroethylhollow hollow fiber membrane component, it is characterised in that including such as
Lower step：
1) it is 220V to carry out processing processing voltage to polytetrafluoroethylhollow hollow fiber membrane by Surface Treatment with Plasma technology,
Electric discharge spacing is 5mm, processing time 30min；
2) by the polytetrafluoroethylhollow hollow fiber membrane after processing it is concordant after, at the 5-10cm of film wire both ends, with the PVA aqueous solution
Processing is coated, the PVA aqueous solution is the PVA for accounting for water quality 5% using being added into water, after PVA is completely dissolved, is added
Mass fraction be 25% glutaraldehyde and 0.5mol/L hydrochloric acid carry out crosslinking acquisition；
3) polytetrafluoroethylhollow hollow fiber membrane Jing Guo coating processing is dried into (drying time 36h) at 25 DEG C, will be dry
Dry polytetrafluoroethylhollow hollow fiber membrane arranges concordantly, is blocked with fluid sealant；
4) polytetrafluoroethylhollow hollow fiber membrane after end-blocking is vertically inserted in casting shell, poured with epoxy resin adhesive
Casting, solidification temperature are 20 DEG C, hardening time 12h, and casting depth is 10cm, finally obtains polytetrafluoroethylhollow hollow fiber membrane group
Part.
Stretching between the polytetrafluoroethylhollow hollow fiber membrane component film wire and epoxy resin adhesive that are obtained to embodiment 1
Adhesion strength is tested, and test condition is spacing 100mm, and rate of extension 50mm/min, film wire is from epoxy resin adhesive
Tensile load during running is 101.25N.
Claims (4)
1. a kind of casting method of polytetrafluoroethylhollow hollow fiber membrane component, it is characterised in that comprise the following steps：
1) polytetrafluoroethylhollow hollow fiber membrane is handled by Surface Treatment with Plasma technology；
2) by the polytetrafluoroethylhollow hollow fiber membrane after processing it is concordant after, at the 5-10cm of film wire both ends, carried out with the PVA aqueous solution
Coating processing；
3) polytetrafluoroethylhollow hollow fiber membrane Jing Guo coating processing is dried at 20-60 DEG C, drying time 12-48h, will be dry
Dry polytetrafluoroethylhollow hollow fiber membrane arranges concordantly, is blocked with fluid sealant；
4) polytetrafluoroethylhollow hollow fiber membrane after end-blocking is vertically inserted in casting shell, casts to obtain with epoxy resin adhesive
Polytetrafluoroethylhollow hollow fiber membrane component.
2. the casting method of polytetrafluoroethylhollow hollow fiber membrane component according to claim 1, it is characterised in that：Described
The PVA aqueous solution is：Xiang Shuizhong adds mass fraction 1%-5% PVA, and after PVA is completely dissolved, adding mass percent is
25% glutaraldehyde and 0.5mol/L hydrochloric acid is crosslinked.
3. the casting method of polytetrafluoroethylhollow hollow fiber membrane component according to claim 1, it is characterised in that：Step 1)
In, the processing voltage that Surface Treatment with Plasma technology is handled polytetrafluoroethylhollow hollow fiber membrane is 110-220V, electric discharge
Spacing is 5-20mm, processing time 10s-1h.
4. the casting method of polytetrafluoroethylhollow hollow fiber membrane component according to claim 1, it is characterised in that：Step 4)
In, the solidification temperature of epoxy resin adhesive casting polytetrafluoroethylhollow hollow fiber membrane component is 15-30 DEG C, hardening time 8-
24h, casting depth are 5-10cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711052937.3A CN107551816A (en) | 2017-10-30 | 2017-10-30 | The casting method of polytetrafluoroethylhollow hollow fiber membrane component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711052937.3A CN107551816A (en) | 2017-10-30 | 2017-10-30 | The casting method of polytetrafluoroethylhollow hollow fiber membrane component |
Publications (1)
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| CN107551816A true CN107551816A (en) | 2018-01-09 |
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| CN201711052937.3A Pending CN107551816A (en) | 2017-10-30 | 2017-10-30 | The casting method of polytetrafluoroethylhollow hollow fiber membrane component |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109499375A (en) * | 2018-10-22 | 2019-03-22 | 新疆水处理工程技术研究中心有限公司 | The production method of extraordinary tubular membrane component |
Citations (6)
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|---|---|---|---|---|
| CN1141233A (en) * | 1995-06-05 | 1997-01-29 | 可乐丽股份有限公司 | Polyvinyl alcohol-based hollow fiber memberane and process for producing same |
| CN101012082A (en) * | 2007-01-24 | 2007-08-08 | 大连理工大学 | Bioreactor using polyvinyl alcohol nano microsphere dynamic film as filtration medium |
| US20070272613A1 (en) * | 2004-02-06 | 2007-11-29 | Minhas Bhupender S | Acid tolerant polymeric membrane and process for the recovery of acid using polymeric membranes |
| CN102641664A (en) * | 2012-04-17 | 2012-08-22 | 浙江理工大学 | Pouring method for polytetrafluoroethylene hollow fiber membrane assembly |
| US20130233791A1 (en) * | 2012-03-08 | 2013-09-12 | Korea Institute Of Science And Technology | Separation membrane for water treatment and manufacturing method thereof |
| 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 |
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2017
- 2017-10-30 CN CN201711052937.3A patent/CN107551816A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1141233A (en) * | 1995-06-05 | 1997-01-29 | 可乐丽股份有限公司 | Polyvinyl alcohol-based hollow fiber memberane and process for producing same |
| US20070272613A1 (en) * | 2004-02-06 | 2007-11-29 | Minhas Bhupender S | Acid tolerant polymeric membrane and process for the recovery of acid using polymeric membranes |
| CN101012082A (en) * | 2007-01-24 | 2007-08-08 | 大连理工大学 | Bioreactor using polyvinyl alcohol nano microsphere dynamic film as filtration medium |
| US20130233791A1 (en) * | 2012-03-08 | 2013-09-12 | Korea Institute Of Science And Technology | Separation membrane for water treatment and manufacturing method thereof |
| CN102641664A (en) * | 2012-04-17 | 2012-08-22 | 浙江理工大学 | Pouring method for polytetrafluoroethylene hollow fiber membrane assembly |
| 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 |
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| 高士刚等: "《鞋靴材料》", 31 January 2012 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109499375A (en) * | 2018-10-22 | 2019-03-22 | 新疆水处理工程技术研究中心有限公司 | The production method of extraordinary tubular membrane component |
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Application publication date: 20180109 |