CN1021828C - Continuous prepn. of ion exchange membrane used for different phase - Google Patents
Continuous prepn. of ion exchange membrane used for different phase Download PDFInfo
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- CN1021828C CN1021828C CN 89100215 CN89100215A CN1021828C CN 1021828 C CN1021828 C CN 1021828C CN 89100215 CN89100215 CN 89100215 CN 89100215 A CN89100215 A CN 89100215A CN 1021828 C CN1021828 C CN 1021828C
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- membrane
- roller
- ion exchange
- exchange membrane
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Abstract
The present invention relates to a continuous preparation of an ion exchange membrane used for different phases. Binding materials of ion exchange resin adopt linear low-density polyvinyl alcohol alloy, a membrane is formed by a four roll calender continuously, screen is filled by a net pressuring apparatus continuously, and a final product is handed by a take-up roller continuously. The present invention has the advantages that flatness of the product is good, the thickness tolerance of the membrane is less than (+/-) 0.02mm, raw material utilization factor can reach more than 95 percent, production efficiency is higher than an intermittent method by more than two times, ionic selectivity of the membrane is more than 90%, and the chemical property of the membrane and the electrochemical performance of the membrane are even.
Description
The invention relates to the continuous preparation method's of heterogeneous ion-exchange membrane invention.
Heterogeneous ion-exchange membrane is the functional separation film of present China output maximum, and it is compared with the homogeneous phase ionic membrane has that ionic concn is big, physical strength is high and characteristics such as practicality is good.Along with the expansion of range of application, product production is brought in constant renewal in, and the international marketing amount was doubled in 5 years, and the home sale amount is turned over two times the same period.Present engineering of water treatment is electrodialysis and support equipment for example, quality and quantitative requirement to film are increasing, yet open among the clear 54-5888 present prior art spy, polyolefin resin and powdery Zeo-karb is mixing with roller or forcing machine, then form membranoid substance.This method rises significantly for the resistivity that does not make film, and obtain transference number of ions height and physical strength heterogeneous ion-exchange membrane preferably, need handle film with the hot water more than 75 ℃, so that film produces the part fine fisssure, and then film being handled with surface-crosslinked polymkeric substance with ion-exchange group or the monomer of the fine fisssure of film part and film, whole technology is discontinuous carrying out.
The objective of the invention is for the continuous preparation method of a heterogeneous ion-exchange membrane is provided.Press net, the continuous rolling finished product of winding roller continuously with four-roll calender continuous film forming, pressure net arrangement in the present invention.The present invention has overcome the shortcoming of prior art, has improved planeness, utilization ratio of raw materials and the production efficiency of film by contrast.
The present invention presses net, the continuous rolling finished product of winding roller continuously with linear low density polyethylene base alloy (being also referred to as the low pressure new LDPE (film grade)) and the blend of powdery ion exchange resin, four-roll calender continuous film forming, pressure net arrangement.So that provide a continuous preparation method of heterogeneous ion-exchange membrane.
Linear low density polyethylene base alloy composition comprises 30～50% linear low density polyethylenes (LLDPE) in the present invention, 30～50% ethylene vinyl acetates (EVA) and 20～40% polyisobutene (PIB).
The present invention's four-roll calender continuous film forming, this four-roll calender is converted by SY4F1120A.
Its roller diameter is 360mm, and roller length is 1120mm rotating speed 3～10m/min, 80～150 ℃ of operating temperature ranges.
The present invention presses net to adopt the instantaneous continuous pressure network process of high temperature, utilizes the pressure between the roller with the molten state of membrane surface screen cloth to be pressed in the diaphragm, and pressure net temperature range is 130～180 ℃.
The present invention prepares heterogeneous ion-exchange membrane continuously, and complete assembly is in the synchronous working state, and winding roller, cooling roller, screen cloth are led out roller, doubling roller and carrying roller and four-roll calender and pressed net arrangement is operation continuously synchronously.
Adopt heterogeneous ion-exchange membrane, the film planeness of continuous processing preparation good, the thickness deviation of film width and length direction is less than ± 0.02mm, raw material availability reaches more than 95%, production efficiency than interrupter method Senior Two doubly more than, the ion selectivity of film is greater than 90%, and the chemical property and the chemical property of film are even.
Accompanying drawing is the continuous film releasing of different-phase ion symphysis and presses the net schematic flow sheet continuously.
The figure sequence number is 1,2,3,4 for four-roll calender, and 5,6,7,8 be cooling roller, and 9,10 be screen cloth, and 11,12 lead out roller for screen cloth, and 13,14 is the pressure net arrangement, and 15,16 is doubling roller, and 17 is winding roller, and 18,19,20,21,22 is carrying roller.
Material running in the accompanying drawings is: constantly add the top of roller 1 and the roller 2 of four-roll calendaring machine through the base-material that is rich in amberlite cosmetics of over-mastication, be rolled into satisfactory diaphragm through roller 1, roller 2, roller 3 and roller 4. Be used for up and down two layers of screen cloth that the ion film strengthens, respectively by screen cloth lead out roller 12 and 11 lead out the top of rear introducing ion film and below. Up and down Two layers of screen cloth are pressed into screen cloth in the film through pressure network device 13 and 14, through cooling roller 5,6,7,8 coolings, after trimming device is cut edge continuously, batch product by takers-in 17 then. Product dispatches from the factory by size cutting, the packing of user's requirement after the quality passed examination. Can better understand advantage of the present invention with reference to following example.
Example 1
With weight ratio is that (it consists of 30～50%LLDPE for 1: 4 to 1: 2 LLDPE base alloy, 30～50%EVA and 20～40%PIB) 5～15 minute makes film base in 120～160 ℃ of following blend with powdery ion exchange resin in the open type dual-roller mixing roll, the transport membrane base rolls into satisfactory diaphragm to the top of the roller 1 and the roller 2 of four-roll calender through roller 1, roller 2, roller 3 and roller 4.Here the service temperature of four-roll calender is 80～150 ℃, continue allow diaphragm with lead out the upper strata screen cloth that roller 12 leads out and lead out lower floor's screen cloth that roller 11 leads out and send into the pressure net arrangement that roller 13 and roller 14 are formed simultaneously, under 130～180 ℃ of temperature condition, be pressed into screen cloth in the film body continuously, then through cooling roller 5,6,7,8 coolings, after trimming device is cut edge continuously, batch product by winding roller 17, product dispatches from the factory by size cutting, the packing of customer requirements after quality inspection is qualified.Quality product sees Table 1.
The heterogeneous ion-exchange membrane performance (anode membrane) of table 1 continuous processing preparation
The menu bit value
Selectivity % 91.1
Face resistance Ω/cm
24.2
Moisture content % 44.9
Exchange capacity meq/g(does) 2.48
The menu bit value
Bursting strength MPa 0.31
Thickness tolerance mm ± 0.02
Light yellow
The comparative example 1
Except that with the ratio of components and blending condition identical with example 1, drop into double roll mill behind the film base cool to room temperature that mixes and draw pine, continue the film base that will draw pine drop into and after 80～100 ℃ of temperatures are prolonged film forming, to cut manual leaving behind in the mixing roll, on the face of leaving behind, spread the stainless steel model and carry out manual cutting edge, screen cloth is spread at the upper and lower surface of film in the arrangement back, and put the stainless steel plate of polishing, send into press then, pressurization 4～8MPa, be warming up to 130～150 ℃, be incubated 1 hour postcooling, product is taken out in pressure release, quality product except that planeness be ± 0.04mm, other quality is identical with example 1.
Claims (1)
1, one comprise the blend composition that is rich in ion exchange resin and linear low density polyethylene base alloy with the four-roll calender continuous film forming, press net arrangement to press the preparation method of the heterogeneous ion-exchange membrane of net, the continuous rolling finished product of winding roller continuously, it is characterized in that linear low density polyethylene base alloy composition comprises: 30～50% linear low density polyethylenes (LLDPE), 30～50% ethylene vinyl acetates (EVA) and 20～40% polyisobutene (PIB).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89100215 CN1021828C (en) | 1989-01-24 | 1989-01-24 | Continuous prepn. of ion exchange membrane used for different phase |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89100215 CN1021828C (en) | 1989-01-24 | 1989-01-24 | Continuous prepn. of ion exchange membrane used for different phase |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1044411A CN1044411A (en) | 1990-08-08 |
| CN1021828C true CN1021828C (en) | 1993-08-18 |
Family
ID=4853745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89100215 Expired - Fee Related CN1021828C (en) | 1989-01-24 | 1989-01-24 | Continuous prepn. of ion exchange membrane used for different phase |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1021828C (en) |
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| US6284124B1 (en) | 1999-01-29 | 2001-09-04 | United States Filter Corporation | Electrodeionization apparatus and method |
| US6649037B2 (en) | 2001-05-29 | 2003-11-18 | United States Filter Corporation | Electrodeionization apparatus and method |
| ES2361004T3 (en) | 2001-10-15 | 2011-06-13 | Siemens Water Technologies Holding Corp. | APPARATUS AND METHOD FOR PURIFICATION OF FLUIDS. |
| US7563351B2 (en) | 2003-11-13 | 2009-07-21 | Siemens Water Technologies Holding Corp. | Water treatment system and method |
| US8377279B2 (en) | 2003-11-13 | 2013-02-19 | Siemens Industry, Inc. | Water treatment system and method |
| US7083733B2 (en) | 2003-11-13 | 2006-08-01 | Usfilter Corporation | Water treatment system and method |
| US7846340B2 (en) | 2003-11-13 | 2010-12-07 | Siemens Water Technologies Corp. | Water treatment system and method |
| US20050103717A1 (en) | 2003-11-13 | 2005-05-19 | United States Filter Corporation | Water treatment system and method |
| US7862700B2 (en) | 2003-11-13 | 2011-01-04 | Siemens Water Technologies Holding Corp. | Water treatment system and method |
| US10213744B2 (en) | 2006-06-13 | 2019-02-26 | Evoqua Water Technologies Llc | Method and system for water treatment |
| US10252923B2 (en) | 2006-06-13 | 2019-04-09 | Evoqua Water Technologies Llc | Method and system for water treatment |
| US20080067069A1 (en) | 2006-06-22 | 2008-03-20 | Siemens Water Technologies Corp. | Low scale potential water treatment |
| US7744760B2 (en) | 2006-09-20 | 2010-06-29 | Siemens Water Technologies Corp. | Method and apparatus for desalination |
| CN101091883B (en) * | 2007-04-13 | 2011-02-09 | 宁波大学 | Equipment for manufacturing composite membrane filter of polytetrafluoroethylene |
| MX2010005876A (en) | 2007-11-30 | 2010-06-15 | Siemens Water Tech Corp | Systems and methods for water treatment. |
| CN101780710B (en) * | 2009-12-07 | 2012-03-07 | 山东东岳高分子材料有限公司 | Continuous preparation method and equipment for enhanced composite ionic membrane |
| CN102553454A (en) * | 2011-12-05 | 2012-07-11 | 杭州埃尔环保科技有限公司 | Preparation method of hyposmosis heterogenous ion exchange membrane |
| CN102512979B (en) * | 2011-12-14 | 2014-05-21 | 浙江大学宁波理工学院 | Manufacture method of polystyrene ion exchange alloy membrane |
| CN103611425B (en) * | 2013-11-13 | 2016-08-03 | 杭州埃尔环保科技有限公司 | A kind of preparation method of cation-exchange membrane with high exchange capacity |
| CN105126630B (en) * | 2015-06-23 | 2017-08-22 | 杭州埃尔环保科技有限公司 | The preparation method of the homogeneous anions and canons exchange membrane of continuous production polyvinyl chloride half |
| CN104998554A (en) * | 2015-07-16 | 2015-10-28 | 陈巨根 | Ion exchange membrane preparation method |
| CN107583473B (en) * | 2016-07-07 | 2020-09-29 | 辽宁易辰膜科技有限公司 | Method for manufacturing roll type ion exchange membrane for diffusion dialysis |
| CN106824306A (en) * | 2017-01-05 | 2017-06-13 | 杭州蓝然环境技术有限公司 | The continuous preparation device and its method of a kind of amberplex |
| EA202090132A1 (en) | 2017-08-21 | 2020-08-03 | Эвокуа Уотер Текнолоджиз Ллк | TREATMENT OF SALT WATER FOR ITS USE FOR AGRICULTURAL AND INDUSTRIAL NEEDS |
| CN109821423A (en) * | 2019-03-27 | 2019-05-31 | 苏州交创石墨烯新材料有限公司 | The solid solution casting technique and device of heterogeneous anion-exchange membrane |
| CN109821424A (en) * | 2019-03-27 | 2019-05-31 | 苏州交创石墨烯新材料有限公司 | The preparation process and device of porous ion exchange membrane |
-
1989
- 1989-01-24 CN CN 89100215 patent/CN1021828C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1044411A (en) | 1990-08-08 |
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