CN1519034A - Formula of modified superstrength water absorbent and manufacturing technique - Google Patents
Formula of modified superstrength water absorbent and manufacturing technique Download PDFInfo
- Publication number
- CN1519034A CN1519034A CNA031136915A CN03113691A CN1519034A CN 1519034 A CN1519034 A CN 1519034A CN A031136915 A CNA031136915 A CN A031136915A CN 03113691 A CN03113691 A CN 03113691A CN 1519034 A CN1519034 A CN 1519034A
- Authority
- CN
- China
- Prior art keywords
- absorbing agent
- acrylamide
- distilled water
- moisture absorbing
- starch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 29
- 239000002250 absorbent Substances 0.000 title claims abstract description 8
- 230000002745 absorbent Effects 0.000 title claims abstract description 8
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 238000000034 method Methods 0.000 title claims description 5
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000012153 distilled water Substances 0.000 claims abstract description 16
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229920002472 Starch Polymers 0.000 claims abstract description 12
- 239000008107 starch Substances 0.000 claims abstract description 12
- 235000019698 starch Nutrition 0.000 claims abstract description 12
- 238000003756 stirring Methods 0.000 claims abstract description 10
- 239000004927 clay Substances 0.000 claims abstract description 9
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 9
- 229920000642 polymer Polymers 0.000 claims abstract description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 6
- 238000005406 washing Methods 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims abstract description 5
- 239000003513 alkali Substances 0.000 claims abstract description 4
- 239000006096 absorbing agent Substances 0.000 claims description 16
- 238000012986 modification Methods 0.000 claims description 13
- 230000004048 modification Effects 0.000 claims description 13
- 239000000835 fiber Substances 0.000 claims description 10
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- 238000005516 engineering process Methods 0.000 claims description 9
- 239000003999 initiator Substances 0.000 claims description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- 239000003292 glue Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 230000007062 hydrolysis Effects 0.000 claims description 6
- 238000006460 hydrolysis reaction Methods 0.000 claims description 6
- 239000005995 Aluminium silicate Substances 0.000 claims description 4
- 235000012211 aluminium silicate Nutrition 0.000 claims description 4
- 238000013461 design Methods 0.000 claims description 4
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Chemical compound [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 229960000935 dehydrated alcohol Drugs 0.000 claims description 3
- 238000001802 infusion Methods 0.000 claims description 3
- 238000006116 polymerization reaction Methods 0.000 claims description 3
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims description 3
- 235000019394 potassium persulphate Nutrition 0.000 claims description 3
- -1 N, N '-methylene acrylamide Chemical compound 0.000 claims description 2
- 229910002651 NO3 Inorganic materials 0.000 claims description 2
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O ammonium group Chemical group [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 2
- 239000000440 bentonite Substances 0.000 claims description 2
- 229910000278 bentonite Inorganic materials 0.000 claims description 2
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 2
- 239000011261 inert gas Substances 0.000 claims description 2
- 229910052756 noble gas Inorganic materials 0.000 claims description 2
- 239000003643 water by type Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 3
- 238000001035 drying Methods 0.000 abstract 1
- 230000000379 polymerizing effect Effects 0.000 abstract 1
- 238000010298 pulverizing process Methods 0.000 abstract 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 abstract 1
- 229910001948 sodium oxide Inorganic materials 0.000 abstract 1
- 238000010521 absorption reaction Methods 0.000 description 2
- 231100000957 no side effect Toxicity 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Landscapes
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
A modified super water absorbent is prepared from acrylamide, cross-linking agent, clay, fibres, starch and trigger through proportionally mixing the first four with distilled water, stirring to obtain liquid mixture, gelatinizing starch, adding trigger at 50-70 deg.C under introducing N2 while stirring, mixing said liquid mixture with gelatinized substance, polymerizing, pugging the polymer with sodium oxide, hydralyzing, washing to remove residual alkali and acrylamide, dewatering by methanol, washing with absolute alcohol to remove methanol, drying and pulverizing by 80 meshes. Its advantages are high hydroscopicity and stability.
Description
Technical field
The present invention relates to chemical material technical field, particularly absorbent polymer material correlation technique.
Background technology
In recent years, macromolecular material more and more is subject to people's attention with its excellent water absorbing properties and wide application, and develops into a special scientific domain.Super absorbent resin (SAP) also claim super strength water absorbent; Can absorb himself quality hundred times to several thousand times water, also have good water-retaining property, therefore be widely used in fields such as industrial or agricultural and daily life, health care.Now existing multiple high absorbency material emerges.The particularly development of high-strength absorbing agent technology is used extensively especially, it is made an addition to hygienic material, construction material, chemical materials etc. locate to obtain many new materials, and as hydroscopic sanitary towel, the suction napkin paper is used for cement and can improves concrete crushing strength etc.
Technology contents
It is simple to the present invention seeks to design a kind of technology, and production cost is low, is used for dosing of packaging material for food and has no side effect, and water absorption is strong, the modification super-strong moisture absorbing agent prescription and the production technology of stable performance.
The object of the invention can be achieved through the following technical solutions.
A kind of modification super-strong moisture absorbing agent prescription, the each component percentage by weight is in the described prescription:
Starch: 12～22%
Acrylamide: 35～45%
Glue crosslinking agent: 0.25～0.5%
Clay: 15～25%
Fiber: 8～20%
Initiator: 5～10%
Modification super-strong moisture absorbing agent prescription medium clay soil can be selected Kaolin or sericite or bentonite for use.Glue crosslinking agent can be selected N for use, N '-methylene acrylamide.The optional ammonium ceric nitrate of initiator or potassium peroxydisulfate or sodium peroxydisulfate.Fiber is the Plant fiber.
A kind of step of modification super-strong moisture absorbing agent producing process is:
1. a certain amount of acrylamide, glue crosslinking agent, clay and fiber are placed reactor in proportion, add by 1: 2 and add distilled water, stir to such an extent that mixed liquor is stand-by.
2. a certain amount of starch is added and be provided with agitator, in the reactor of condenser, thermometer, ratio in starch and distilled water is 1: 3 adding distilled water, the ratio that every hectogram water absorbing agent adds 0.25～0.55 cubic metre of noble gas feeds under the inert gas conditions, stirs gelatinizing 10～60min in 50～90 ℃ of waters bath with thermostatic control.
3. after gelatinizing was finished, temperature of reaction kettle was constant at 50～80 ℃, under logical nitrogen condition, added initiator, stirred 1～2.5 hour, make in the reactor color by orange-yellow become light yellow, must the gelatinizing thing.
4. with gelatinizing thing and mixed liquor respectively with annotating plug infusion open flow mouth, be sprayed onto in the mixing chamber that mixes molten device with the speed of 1.2m/s and mix.
5. mixed liquor is sprayed into continuously temperature and be heated to 90-95 ℃ of polymerizer, the polymerizer size moves to outlet with liquid from inlet needed design in 2 hours, made the mixed liquor polymerization.
6. the gelatinous polymer that polymerizer is come out connects and causes extruder, and extruder temperature is controlled between 90～98 ℃, is that 30% sodium hydroxide solution is injected extruder continuously with concentration, carries out mixing hydrolysis with polymer, constant temperature hydrolysis 2 hours, hydrolyzate.
7. ratio 1: 1.5 the distilled water of hydrolyzate with product and distilled water soaked, washs, flush away residual alkali and acrylamide, making the hydrolyzate pH value is 7.
8. with methanol the product after washing is dewatered, use the methanol in the dehydrated alcohol flush away dehydrate then.
9. chamber water thing is dry under 120～160 ℃, make moisture content less than 1.5%, be crushed to the super strength water absorbent finished product that the 80-100 order gets powdered.
The technology of the present invention progress is that production technology is simple, and cost is low, and water absorption is strong, and stable performance has no side effect.
Specific embodiment
A kind of modification super-strong moisture absorbing agent prescription, the each component percentage by weight is in the described prescription:
Starch: 12～22%
Acrylamide: 35～45%
Glue crosslinking agent: 0.25～0.5%
Clay: 15～25%
Fiber: 8～20%
Initiator: 5～10%
Below be the present invention's one specific implementation method:
1, takes by weighing: starch 15kg, acrylamide 40kg, N, N '-methylene acrylamide 0.1kg, Kaolin 20.9kg, potassium peroxydisulfate 8kg, Cotton Gossypii 16kg.
The acrylamide N that 2, will take by weighing, N '-methylene acrylamide, Kaolin adds reactor, adds the 200kg distilled water, stirs to such an extent that mixed liquor is stand-by.
3, starch 15kg adding is provided with in the reactor of agitator, condenser, thermometer, adds the 45kg distilled water, water-bath feeds nitrogen down and stirs gelatinizing 50 minutes for 300 cubic metres under 60 ℃ of constant temperature.
4, after gelatinizing was finished, the temperature of reaction kettle perseverance was in 80 ℃, under logical nitrogen condition, added a certain amount of initiator, stir about made in 1 hour in the reactor color by orange-yellow become light yellow, the gelatinizing thing.
5, mixed liquor and gelatinizing thing are gone into nozzle with annotating the plug infusion respectively, be sprayed onto in the mixing chamber that mixes molten device with the speed of 1.2m/S and mix.
6, mixed liquor is sprayed into continuously temperature and be heated to 90 ℃ polymerizer, the polymerizer size moves to outlet with liquid from inlet needed design in 2 hours, made the mixed liquor polymerization.
7, the gelatinous polymer that polymerizer is come out connects and causes extruder, extruder temperature is controlled at 90 ℃, is that 30% sodium hydroxide solution is annotated continuously and put extruder with concentration, carries out mixing hydrolysis with polymer, constant temperature hydrolysis 2 hours, hydrolyzate.
8, be that 1: 1.5 distilled water soaks with the ratio of hydrolyzate and distilled water, washing, flush away residual alkali and acrylamide, making the hydrolyzate pH value is 7.
9, with methanol the product after washing is dewatered, use the methanol in the dehydrated alcohol flush away dehydrate then.
10, the Aquatic product thing that will remove alcohol 130 ℃ down dry, make its moisture content less than 1.5%, and be crushed to 80 orders following the powdered product, pack the super strength water absorbent finished product.
Claims (7)
1, a kind of modification super-strong moisture absorbing agent prescription, it is characterized in that: the each component percentage by weight is in the described prescription:
Starch: 12～22%
Acrylamide: 35～45%
Glue crosslinking agent: 0.25～0.5%
Clay: 15～25%
Fiber: 6～20%
Initiator: 5～10%
2, modification super-strong moisture absorbing agent prescription according to claim 1 is characterized in that: described prescription optimum weight face proportion by subtraction is:
Starch: 18%
Acrylamide: 40.9%
Glue crosslinking agent: 0.1%
Clay: 21%
Fiber: 15%
Initiator: 5%
3, modification super-strong moisture absorbing agent prescription according to claim 1 and 2, it is characterized in that: described clay is selected Kaolin or sericite or bentonite for use.
4, modification super-strong moisture absorbing agent prescription according to claim 1 and 2, it is characterized in that: described glue crosslinking agent is N, N '-methylene acrylamide.
5, modification super-strong moisture absorbing agent prescription according to claim 1 and 2 is characterized in that: described initiator is ammonium ceric nitrate or potassium peroxydisulfate or sodium peroxydisulfate.
6, modification super-strong moisture absorbing agent prescription according to claim 1 and 2 is characterized in that: described fiber is the Plant fiber.
7, a kind of modification super-strong moisture absorbing agent producing process, it is characterized in that: the step of described production technology is:
1. a certain amount of acrylamide, glue crosslinking agent, clay and fiber being placed reactor in proportion, is 1: 2 adding distilled water in above-mentioned material total amount and distilled water ratio, stirs to such an extent that mixed liquor is stand-by;
2. a certain amount of starch is added and be provided with agitator, in the reactor of condenser, thermometer, ratio in starch and distilled water is 1: 3 adding distilled water, the ratio that every hectogram water absorbing agent adds 0.25～0.55 cubic metre of noble gas feeds under the inert gas conditions, stirs gelatinizing 10～60min in 50～90 ℃ of waters bath with thermostatic control;
3. after gelatinizing was finished, temperature of reaction kettle was constant at 50～70 ℃, under logical nitrogen condition, added initiator, stir 1～2.5h make in the reactor color by orange-yellow become light yellow, the gelatinizing thing;
4. with gelatinizing thing and mixed liquor respectively with annotating plug infusion open flow mouth, be sprayed onto in the mixing chamber that mixes molten device with the speed of 1.2m/s and mix;
5. mixed liquor is sprayed into continuously temperature and be heated to 90-95 ℃ polymerizer, the polymerizer size moves to outlet with liquid from inlet needed design in 2 hours, made the mixed liquor polymerization;
6. the gelatinous polymer that polymerizer is come out connects and causes extruder, and extruder temperature is controlled between 90～98 ℃, is that 30% sodium hydroxide solution is injected extruder continuously with concentration, carries out mixing hydrolysis with polymer, constant temperature hydrolysis 2 hours, hydrolyzate;
7. ratio 1: 1.5 the distilled water of hydrolyzate with product and distilled water soaked, washs, flush away residual alkali and acrylamide, making the hydrolyzate pH value is 7;
8. with methanol the product after washing is dewatered, use the methanol in the dehydrated alcohol flush away dehydrate then.
9. dehydrate is dry under 120～160 ℃, make moisture content less than 1.5%, be crushed to the super strength water absorbent finished product that the 80-100 order gets powdered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031136915A CN1519034A (en) | 2003-01-22 | 2003-01-22 | Formula of modified superstrength water absorbent and manufacturing technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031136915A CN1519034A (en) | 2003-01-22 | 2003-01-22 | Formula of modified superstrength water absorbent and manufacturing technique |
Publications (1)
| Publication Number | Publication Date |
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| CN1519034A true CN1519034A (en) | 2004-08-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA031136915A Pending CN1519034A (en) | 2003-01-22 | 2003-01-22 | Formula of modified superstrength water absorbent and manufacturing technique |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101942167A (en) * | 2010-09-10 | 2011-01-12 | 天津工业大学 | Nanometer clay-containing high absorptive hydrogel as well as preparation method and application thereof |
| WO2012001707A1 (en) * | 2010-07-02 | 2012-01-05 | Indian Council Of Agricultural Research | Novel superabsorbents and the method(s) of obtaining the same |
| CN101508895B (en) * | 2009-03-17 | 2012-07-04 | 北京鸿森鹏程生态农业科技股份有限公司 | Agricultural water-loss reducer and production process |
| CN101242861B (en) * | 2005-08-22 | 2013-02-20 | 宝洁公司 | Hydroxyl polymer fiber fibrous structures and processes for making same |
| CN103833916A (en) * | 2012-11-23 | 2014-06-04 | 石学香 | Preparation process of medical starch acrylate composite hydrogel |
| CN105326609A (en) * | 2015-10-21 | 2016-02-17 | 芜湖悠派护理用品科技股份有限公司 | Adult diaper |
| CN107670091A (en) * | 2017-10-10 | 2018-02-09 | 王玲芹 | A kind of diaper super moisture absorbing resin material and preparation method thereof |
-
2003
- 2003-01-22 CN CNA031136915A patent/CN1519034A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101242861B (en) * | 2005-08-22 | 2013-02-20 | 宝洁公司 | Hydroxyl polymer fiber fibrous structures and processes for making same |
| CN101508895B (en) * | 2009-03-17 | 2012-07-04 | 北京鸿森鹏程生态农业科技股份有限公司 | Agricultural water-loss reducer and production process |
| WO2012001707A1 (en) * | 2010-07-02 | 2012-01-05 | Indian Council Of Agricultural Research | Novel superabsorbents and the method(s) of obtaining the same |
| US9833767B2 (en) | 2010-07-02 | 2017-12-05 | Indian Council Of Agricultural Research | Superabsorbents and the method(s) of obtaining the same |
| CN101942167A (en) * | 2010-09-10 | 2011-01-12 | 天津工业大学 | Nanometer clay-containing high absorptive hydrogel as well as preparation method and application thereof |
| CN103833916A (en) * | 2012-11-23 | 2014-06-04 | 石学香 | Preparation process of medical starch acrylate composite hydrogel |
| CN105326609A (en) * | 2015-10-21 | 2016-02-17 | 芜湖悠派护理用品科技股份有限公司 | Adult diaper |
| CN107670091A (en) * | 2017-10-10 | 2018-02-09 | 王玲芹 | A kind of diaper super moisture absorbing resin material and preparation method thereof |
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Owner name: XI AN HONGSEN AGRO-ECOLOGICAL TECHNOLOGY CO., LTD Free format text: FORMER OWNER: LI ZHI Effective date: 20070216 |
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Open date: 20040811 |