CN104497611A - Preparation formula of cation exchange membrane - Google Patents
Preparation formula of cation exchange membrane Download PDFInfo
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- CN104497611A CN104497611A CN201410636216.7A CN201410636216A CN104497611A CN 104497611 A CN104497611 A CN 104497611A CN 201410636216 A CN201410636216 A CN 201410636216A CN 104497611 A CN104497611 A CN 104497611A
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Abstract
The invention provides a preparation formula of a cation exchange membrane, which comprises the following formula raw materials by weight part: 6000-8000 parts of cation resin, 1500-2300 parts of low density polyethylene (LDPE); 400-550 parts of polyisobutylene (PIB); 350-500 parts of chlorosulfonated polyethylene (CSM); 90-120 parts of calcium stearate; 15-30 parts of polyethylene wax, 7-16 parts of zinc oxide (ZnO); and 5-13 parts of anti-oxidant. The cation exchange membrane through the technical scheme has the advantages of little water penetration, less resistance, high chemical stability, and acid and alkali resistance.
Description
Technical field
The present invention relates to a kind of ion-exchange membrane, especially relate to a kind of preparation formula of cationic exchange membrane.
Background technology
Ion-exchange membrane is the key part of electrodialyzer, there is certain selectivity and electric conductivity, comprise cationic exchange membrane and anion-exchange membrane, be widely used in, in electrochemistry department, being separated dissimilar ion, such as seawater, the desalination of brackish water, the desalination and concentration of solution, the recovery that electrolysis makes mineral compound and radioelement is purified, the softening desalination of feedwater, the industrial goods process such as electronics, medicine, chemical industry, food, coal, metallurgy.Different structure, the ion-exchange membrane that different methods manufactures is at ion selectivity, exchange capacity, resistance, water permeability and chemistry and mechanical stability aspect there is obvious difference, and in chemical separating field, in the application process of ion-exchange membrane, ubiquity " runs material " and the problem of " escaping water ", theoretical and the diffusion law according to Donnan equilibrium, when the solution contact that ion-exchange membrane both sides concentration is different, electrolyte ion will inevitably be there is from the side diffusion dialysis of high density side direction lower concentration, there is again water to permeate from the natural diffuseness of lower concentration side direction high density side simultaneously.Here it is so-called " running material " and " escaping water " phenomenon problem, run material loss product, in EDI device, then can not obtain ultrapure water, escape the energy consumption that water increases process.And the electrolytic liquid of high density can not be obtained in electrodialysis concentration process.In actual applications, when adopting common heterogeneous ion-exchange membrane, be difficult to effectively address these problems, and when adopting hypotonic permeable membrane, " race material " and " escaping water " phenomenon can effectively be improved, reduce the loss of product and reduce energy consumption, this be advocate resource reutilization, the cleaner production of energy conservation type provides technological approaches.
Therefore, Chinese patent 200610050214.5 discloses a kind of manufacture method of low permeation ion exchange membrane, and its Raw ingredient proportion is counted with parts by weight:
Wherein said amberlite cosmetics is 100 order ~ 200 object strongly acidic styrene Zeo-karb powder or strong-basicity styrene anionite-exchange resin powder, described initiator is benzoyl peroxide, described linking agent is divinylbenzene, described coupling agent is organosilicon alkanes monomer, described remover is any one of tetrafluoroethylene or silicone resin remover, and described lubricant is dystectic paraffin.Its film finished product compactness is high, and salt spread coefficient is little and pressure water-permeable is little, and the pressure water permeability of this exchange membrane still can improve lifting further, and in addition, on market, the membrane surface resistance of this exchange membrane is at 15 Ω * cm
2left and right, work required voltage is higher, and power consumption is also higher.
Summary of the invention
In view of this, the problem to be solved in the present invention is that a kind of pressure water-permeable is little, resistance is little, chemical stability is high, the preparation formula of a kind of cationic exchange membrane of acid and alkali-resistance.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is:
A preparation formula for cationic exchange membrane, this formula material and parts by weight of raw materials are:
Preferably, the preparation formula of above-mentioned a kind of cationic exchange membrane, wherein said formula material also comprises pigment, and this pigment weight part is 0.1 ~ 0.3 part.
More preferably, the preparation formula of above-mentioned a kind of cationic exchange membrane, wherein said formula material and parts by weight of raw materials are:
Further preferably, the preparation formula of above-mentioned a kind of cationic exchange membrane, wherein said pigment is that quinacridone is red.
Still more preferably, the preparation formula of above-mentioned a kind of cationic exchange membrane, wherein said resin cation (R.C.) repeatedly washs through washing water, the removing impurity such as suspended substance, bulk, be washed till pH value neutrality, washing water specific conductivity is no more than 60us/cm, dries after discharging water.
Technique effect of the present invention is mainly reflected in: this technical scheme implements the more traditional exchange membrane of water permeability of the cationic exchange membrane of preparation at condition of equivalent thickness 0.4mm, under 0.2MPa pressure condition, tradition exchange membrane 0.1ml water is completely through generally needing 15min, and this cationic exchange membrane 0.1ml water needs 30min through the shortest time completely.Meanwhile, the membrane surface resistance of this cationic exchange membrane is 12 Ω * cm to the maximum
2, and this cationic exchange membrane acid and alkali-resistance, normally can work within the scope of the value of PH4 ~ 8.
Embodiment
Below the specific embodiment of the present invention is told about further, be easier to make technical scheme of the present invention understand and grasp.
A preparation formula for cationic exchange membrane, this formula material and parts by weight of raw materials are: resin cation (R.C.), 6000 ~ 8000 parts; Low Density Polyethylene (LDPE), 1500 ~ 2300 parts; Polyisobutene (PIB), 400 ~ 550 parts; Chlorosulfonated polyethylene (CSM), 350 ~ 500 parts; Calcium stearate, 90 ~ 120 parts; Polyethylene wax, 15 ~ 30 parts; Zinc oxide (ZnO), 7 ~ 16 parts; Oxidation inhibitor, 5 ~ 13 parts.Wherein resin cation (R.C.) repeatedly washs through washing water, removing suspended substance, bulk waits impurity, be washed till pH value neutrality, washing water specific conductivity is no more than 60us/cm, add after discharging water in kiln, chambers temp to be dried reaches 78-88 DEG C of discharging, and carry out abrasive dust successively after cooling, sieve powder, the red sieve specification of resin cation (R.C.) is 100 orders, resin cation (R.C.) after abrasive dust is complete and the Low Density Polyethylene prepared, polyisobutene, chlorosulfonated polyethylene, polyethylene wax, zinc oxide, oxidation inhibitor carries out roll-in batch mixing, interior pressure is mixing to plastifying transparent shape completely, after add that calcium stearate is mixed to turn over, mixing, and pull-out is divided into small pieces and is pressed.
" embodiment 1 "
A kind of cationic exchange membrane formula material and parts by weight of raw materials are: resin cation (R.C.), 7000 parts; Low Density Polyethylene (LDPE), 1900 parts; Polyisobutene (PIB), 470 parts; Chlorosulfonated polyethylene (CSM), 425 parts; Calcium stearate, 106 parts; Polyethylene wax, 20 parts; Zinc oxide (ZnO), 11 parts; Oxidation inhibitor, 9 parts.
Cationic exchange film properties:
The performance measurement of pertinent ion exchange membrane, the standard of domestic existing HY/T034.2-1994, we measure by the method that this standard is fixed:
Thickness 0.43mm, loading capacity is 2.9mol/kg (doing); Water ratio 45%; Membrane surface resistance 2 Ω * cm
2,, select transmitance 97%.In addition, its bursting strength > 100kPa, under the normal operational condition of electrodialysis and use temperature under (10 DEG C ~ 40 DEG C), life-span is more than 5 years, and under condition of equivalent thickness 0.4mm, 0.2MPa pressure condition, cationic exchange membrane 0.1ml water is completely through needs 40min, and the solution 48h of PH4 ~ 8 can be soaked in, the item performances such as exchange capacity do not decline.
" embodiment 2 "
A kind of cationic exchange membrane formula material and parts by weight of raw materials are: resin cation (R.C.), 6000 parts; Low Density Polyethylene (LDPE), 1500 parts; Polyisobutene (PIB), 430 parts; Chlorosulfonated polyethylene (CSM), 380 parts; Calcium stearate, 96 parts; Polyethylene wax, 20 parts; Zinc oxide (ZnO), 10 parts; Oxidation inhibitor, 7 parts.
Cationic exchange film properties:
The performance measurement of pertinent ion exchange membrane, the standard of domestic existing HY/T034.2-1994, we measure by the method that this standard is fixed:
Thickness 0.43mm, loading capacity is 2.6mol/kg (doing); Water ratio 40%; Membrane surface resistance 9 Ω * cm
2,, select transmitance 95%.In addition, its bursting strength > 100kPa, under the normal operational condition of electrodialysis and use temperature under (10 DEG C ~ 40 DEG C), life-span is more than 5 years, and under condition of equivalent thickness 0.4mm, 0.2MPa pressure condition, cationic exchange membrane 0.1ml water is completely through needs 30min, and the solution 48h of PH4 ~ 8 can be soaked in, the item performances such as exchange capacity do not decline.
" embodiment 3 "
A kind of cationic exchange membrane formula material and parts by weight of raw materials are: resin cation (R.C.), 8000 parts; Low Density Polyethylene (LDPE), 2200 parts; Polyisobutene (PIB), 500 parts; Chlorosulfonated polyethylene (CSM), 420 parts; Calcium stearate, 106 parts; Polyethylene wax, 20 parts; Zinc oxide (ZnO), 10 parts; Oxidation inhibitor, 9 parts.
Cationic exchange film properties:
The performance measurement of pertinent ion exchange membrane, the standard of domestic existing HY/T034.2-1994, we measure by the method that this standard is fixed:
Thickness 0.43mm, loading capacity is 2.3mol/kg (doing); Water ratio 35%; Membrane surface resistance 11 Ω * cm
2,, select transmitance 90%.In addition, its bursting strength > 100kPa, under the normal operational condition of electrodialysis and use temperature under (10 DEG C ~ 40 DEG C), life-span is more than 5 years, and under condition of equivalent thickness 0.4mm, 0.2MPa pressure condition, cationic exchange membrane 0.1ml water is completely through needs 30min, and the solution 48h of PH4 ~ 8 can be soaked in, the item performances such as exchange capacity do not decline.
" embodiment 4 "
The present embodiment and above-described embodiment structure and the equal basic simlarity of principle, its difference is: cationic exchange membrane formula material also comprises pigment, 0.1 ~ 0.3 part, and wherein pigment is that quinacridone is red, is provided for cationic exchange membrane and takes on a red color.
As resin cation (R.C.), 7000 parts; Low Density Polyethylene (LDPE), 1900 parts; Polyisobutene (PIB), 470 parts; Chlorosulfonated polyethylene (CSM), 425 parts; Calcium stearate, 106 parts; Polyethylene wax, 20 parts; Zinc oxide (ZnO), 11 parts; Oxidation inhibitor, 9 parts; 0.25 part.
Certainly, the exemplary illustration of the above only typically used of the present invention, by the combination of same or similar technical characteristic and replacement, can form multiple concrete scheme, these schemes all drop within protection scope of the present invention.
Claims (5)
1. a preparation formula for cationic exchange membrane, this formula material and parts by weight of raw materials are:
。
2. the preparation formula of a kind of cationic exchange membrane according to claim 1, is characterized in that: described formula material also comprises pigment, this pigment weight part is 0.1 ~ 0.3 part.
3. the preparation formula of a kind of cationic exchange membrane according to claim 2, is characterized in that: described formula material and parts by weight of raw materials are:
。
4. the preparation formula of a kind of cationic exchange membrane according to claim 3, is characterized in that: described pigment is that quinacridone is red.
5. the preparation formula of a kind of cationic exchange membrane according to claim 1, it is characterized in that: described resin cation (R.C.) repeatedly washs through washing water, impurity such as removing suspended substance, bulk etc., is washed till pH value neutrality, washing water specific conductivity is no more than 60us/cm, dries after discharging water.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107304303A (en) * | 2016-04-18 | 2017-10-31 | 金华市金秋环保水处理有限公司 | A kind of EDI dedicated films factory formula |
| CN110586201A (en) * | 2018-06-12 | 2019-12-20 | 金华市金秋环保水处理有限公司 | Monovalent cation exchange membrane and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1104556A (en) * | 1994-09-27 | 1995-07-05 | 核工业北京化工冶金研究院 | Cation exchange membrane and manufacturing method thereof |
| CN1470315A (en) * | 2002-07-25 | 2004-01-28 | 上海上化水处理材料有限公司 | Polyethylene heterogeneous ion exchange membrane for electrodialysis desalter of packed bed |
| CN101012315A (en) * | 2006-04-06 | 2007-08-08 | 谭士宾 | Method of manufacturing low permeation ion exchange membrane |
| CN103611425A (en) * | 2013-11-13 | 2014-03-05 | 杭州埃尔环保科技有限公司 | Preparation method of cation-exchange membrane with high exchange capacity |
-
2014
- 2014-11-07 CN CN201410636216.7A patent/CN104497611A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1104556A (en) * | 1994-09-27 | 1995-07-05 | 核工业北京化工冶金研究院 | Cation exchange membrane and manufacturing method thereof |
| CN1470315A (en) * | 2002-07-25 | 2004-01-28 | 上海上化水处理材料有限公司 | Polyethylene heterogeneous ion exchange membrane for electrodialysis desalter of packed bed |
| CN101012315A (en) * | 2006-04-06 | 2007-08-08 | 谭士宾 | Method of manufacturing low permeation ion exchange membrane |
| CN103611425A (en) * | 2013-11-13 | 2014-03-05 | 杭州埃尔环保科技有限公司 | Preparation method of cation-exchange membrane with high exchange capacity |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107304303A (en) * | 2016-04-18 | 2017-10-31 | 金华市金秋环保水处理有限公司 | A kind of EDI dedicated films factory formula |
| CN110586201A (en) * | 2018-06-12 | 2019-12-20 | 金华市金秋环保水处理有限公司 | Monovalent cation exchange membrane and preparation method thereof |
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