CN1410463A - Superstrong water absorber and its preparation method - Google Patents
Superstrong water absorber and its preparation method Download PDFInfo
- Publication number
- CN1410463A CN1410463A CN 02147733 CN02147733A CN1410463A CN 1410463 A CN1410463 A CN 1410463A CN 02147733 CN02147733 CN 02147733 CN 02147733 A CN02147733 A CN 02147733A CN 1410463 A CN1410463 A CN 1410463A
- Authority
- CN
- China
- Prior art keywords
- vinylformic acid
- water absorbent
- drying
- temperature
- linking agent
- 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.)
- Granted
Links
Landscapes
- Graft Or Block Polymers (AREA)
- Laminated Bodies (AREA)
Abstract
An ultra-strong water absorbent is prepared through adding water to konjak starch, gelatinizing at a certain temp., graft copolymerization by pumping locally netralized acrylic acid monomer, trigger and cross-linking agent while introducing N2 gas or Argno gas, spraying into a spiral tube type turbulence reactor, graft copolymerization, then screen extruding out, drying in a rolling drum type film forming dryer, and pulverizing to obtain granular product. Its advantages are high hydroscopicity (500-20000 times), and biodegradable.
Description
Technical field
The present invention relates to a kind of Rhizoma amorphophalli powder graft copolymerization vinylformic acid (salt) super strength water absorbent, also relate to a kind of preparation method of super strength water absorbent simultaneously.
Background technology
Existing water-retaining agent mainly is divided into two big classes: the one, and the hydroscopic high-molecular resin of chemosynthesis is as polyacrylic resin; The 2nd, the starch based super strength water absorbent.The chemosynthesis macromolecule resin at present can be stable suitability for industrialized production, but three wastes problem is serious in the process, and power consumption, water loss is big, is difficult to degraded after the use, environment is polluted, and the supply of domestic this class water-retaining agent is because of technology and the main dependence on import of cost reason.The suitability for industrialized production of starch based water-retaining agent still is at the initial stage, the fine solution of failing such as discontinuous of the stirring problem of non-uniform in Technology less stable such as the technological process, production.Do not find that by retrieval a kind of super strength water absorbent and preparation method are disclosed or use.
Summary of the invention
The object of the present invention is to provide a kind of super strength water absorbent, its water absorbent rate height, absorption speed is fast.
Another object of the present invention has been to provide a kind of preparation method of super strength water absorbent, and its technology is easy, has solved the copolyreaction medium viscosity and has increased the uneven problem of back stirring.
In order to achieve the above object, the present invention adopts following technical measures:
The rivieri raw material past that proposes among the present invention limits because of the region, and the plantation amount is little, fails to cause enough attention.Now, the significantly raising of konjaku planting technology and output makes it become to have the important agricultural resource that industrialized developing is worth.The major ingredient of konjaku is Rhizoma amorphophalli glucomannan (Konjac Glucomannan, be called for short KGM), it is the natural macromolecule amylose of known plants glue medium viscosity maximum, account for 50～60% of dry product weight, its molecular formula is (C6H10O5) n, and it is in 1: 6 ratio, by β-1 by D-glucose and D-seminose, the composite natral macromolecule polysaccharide of 4 glycosidic link be combined intos, its coefficient of expansion in water is about 100.There is the side chain of β-1,3 key the mannose group C-3 position of this sugar backbone, except that glucose and mannose residue, also has ethanoyl to exist, and its crystalline structure has two kinds on α type (armorphous) and β type (mating type).Have a large amount of hydroxyls in the Rhizoma amorphophalli glucomannan macromolecular structure, can carry out multiple esterification and modified-reaction.Utilize konjaku (konjaku powder, Rhizoma amorphophalli micropowder or full Rhizoma amorphophalli powder), it is carried out the chemically modified macromolecule polysaccharide that molecule obtains having synergistic function after composite modified with physics and chemical process.This polysaccharide owing to have instant, thickening, gelling, plastic, the high absorption of heat, is very good wide spectrum gel, a thickening material of a gellike performance except that the character that possesses natural konjac polysaccharide.Based on the characteristic of rivieri raw material, it is carried out graft copolymerization suction monomer can obtain excellent water absorbing properties.This super strength water absorbent is made by following raw materials according:
1, Rhizoma amorphophalli powder and vinylformic acid mass ratio are 1: 10～1: 100
2, vinylformic acid is that (degree of neutralization is 60mol%～90mol%) with alkali part neutral vinylformic acid in advance
3, initiator and acrylic acid mass ratio are 0.1%～1%
4, linking agent and acrylic acid mass ratio 0.01%～0.8%
The steps include:
With Rhizoma amorphophalli powder after gelatinization under the 30-60 ℃ of temperature (solid content 0.5-5.0%); the passing ratio pump adds refrigerative, and (degree of neutralization is 60mol%～90mol%) with alkali part neutral vinylformic acid; add the initiator of vinylformic acid 0.1Wt%～1Wt% and the linking agent of 0.01Wt%～0.8Wt%; konjaku powder and vinylformic acid mass ratio are 1: 10～1: 100; stir and logical nitrogen or argon shield; after the copolyreaction of 30-70 ℃ of temperature initiation grafting; following reaction solution to spray to enter temperature with nitrogen or argon gas is that 70-130 ℃ helix tube type turbulent flow reactor carries out graft copolymerization; reaction times 30-300Sec; spiral is extruded and is sent into drum-type film forming moisture eliminator; make reactant be membranaceous drying; drying temperature 90-180 ℃, time of drying 0.5-10min.Dry back product is the film sheet, and the film sheet is ground into 60-300 purpose granular product.
In the preparation of konjaku graft co-polypropylene acid (salt) super strength water absorbent, Rhizoma amorphophalli powder can be konjaku powder, Rhizoma amorphophalli micropowder or full Rhizoma amorphophalli powder; Neutralization can be adopted sodium hydroxide or potassium hydroxide with alkali; Initiator is Potassium Persulphate, ammonium persulphate or ceric ammonium nitrate; Linking agent is N, N '-methylene-bisacrylamide, epoxy chloropropane 1,4-butyleneglycol; Logistics stirs and leads to nitrogen or argon gas is protected, the activity of the free radical that produces in the protective reaction in the entire reaction course.It is characterized in that with proportioning pump accurately reinforced.Each raw material all is configured to certain density work mother liquor and is stored in the hold tank, and the passing ratio pump accurately adds in proportion automatically.After the copolyreaction of 30-70 ℃ of temperature initiation grafting, following reaction solution to spray to enter temperature with nitrogen or argon gas is helix tube type turbulent flow reactor-screw transport reactor of 70-130 ℃, carries out graft copolymerization.Carry the heavy-gravity fluid that becomes with air pressure and screw rod power, and force to form turbulent flow, strengthen mixing effect.Reaction product is extruded through screw rod and is sent into drum-type film forming moisture eliminator, makes reactant be membranaceous drying, drying temperature 90-180 ℃, time of drying 0.5-10min.Dry back product is the film sheet, at last the film sheet is ground into 60-300 purpose granular product.
The konjaku super strength water absorbent that relates among the present invention is compared with existing starch based super strength water absorbent, the preparation technology of konjaku graft co-polypropylene acid (salt) super strength water absorbent is simple, solved and stirred problem of non-uniform after viscosity increases in the copolyreaction, and energy whole process protection free radical reaction; Producing apparatus simple structure, compactness; Processing parameter is easy to realize omnidistance online detection, control; The water absorbent rate height of product, absorption speed is fast, gel-strength is big and biodegradable.This product can be widely used in fields such as sanitary material, medical treatment, agricultural gardening.
Embodiment
Example 1:
4.5 parts in the full powder of konjaku is added 100 parts of water (solid content 4.5%) after gelatinization under 40 ℃ of temperature, and the passing ratio pump adds refrigerative with sodium hydroxide part neutral vinylformic acid (degree of neutralization is 80mol%), and full powder of konjaku and vinylformic acid mass ratio are 1: 50.Add the initiator potassium persulfate of vinylformic acid 0.5Wt% and the linking agent N of 0.1Wt%; N '-methylene-bisacrylamide; stir and logical nitrogen protection; after the copolyreaction of 60 ℃ of temperature initiation graftings, following reaction solution to spray to enter temperature with nitrogen is that 90 ℃ helix tube type turbulent flow reactor carries out graft copolymerization, reaction times 240Sec; spiral is extruded and is sent into drum-type film forming moisture eliminator; make reactant be membranaceous drying, 140 ℃ of drying temperatures, time of drying 2min.Dry back product is the film sheet, through being ground into 120 purpose granular products.Product is 1800 times to the specific absorption of pure water, and the specific absorption of physiological saline can reach 170 times, and the specific absorption of 1min pure water and the specific absorption of physiological saline are respectively 1100 times and 100 times.
Example 2:
3.5 parts of konjaku powders are added 100 parts of water (solid content 3.5%) after gelatinization under 35 ℃ of temperature, and the passing ratio pump adds refrigerative with sodium hydroxide part neutral vinylformic acid (degree of neutralization is 70mol%), and konjaku powder and vinylformic acid mass ratio are 1: 80.Add the initiator potassium persulfate of vinylformic acid 0.4Wt% and the linking agent N of 0.2Wt%; N '-methylene-bisacrylamide; stir and logical nitrogen protection; after the copolyreaction of 50 ℃ of temperature initiation graftings, following reaction solution to spray to enter temperature with nitrogen is that 85 ℃ helix tube type turbulent flow reactor carries out graft copolymerization, reaction times 180Sec; spiral is extruded and is sent into drum-type film forming moisture eliminator; make reactant be membranaceous drying, 140 ℃ of drying temperatures, time of drying 2min.Dry back product is the film sheet, through being ground into 100 purpose granular products.The specific absorption of product pure water is 1500 times, and the specific absorption of physiological saline can reach 130 times, and the specific absorption of 1min pure water and the specific absorption of physiological saline are respectively 950 times and 90 times.
Example 3:
4.5 parts in the full powder of konjaku is added 100 parts of water (solid content 4.5%) after gelatinization under 40 ℃ of temperature, and the passing ratio pump adds refrigerative with sodium hydroxide part neutral vinylformic acid (degree of neutralization is 85mol%), and full powder of konjaku and vinylformic acid mass ratio are 1: 50.Add the initiator ammonium persulfate of vinylformic acid 0.8Wt% and the linking agent N of 0.7Wt%; N '-methylene-bisacrylamide; stir and logical argon shield; after the copolyreaction of 60 ℃ of temperature initiation graftings, following reaction solution to spray to enter temperature with argon gas is that 90 ℃ helix tube type turbulent flow reactor carries out graft copolymerization, reaction times 240Sec; spiral is extruded and is sent into drum-type film forming moisture eliminator; make reactant be membranaceous drying, 150 ℃ of drying temperatures, time of drying 2min.Dry back product is the film sheet, through being ground into 120 purpose granular products.The specific absorption of product pure water is 800 times, and the specific absorption of physiological saline can reach 80 times, and the specific absorption of 1min pure water and the specific absorption of physiological saline are respectively 600 times and 65 times.
Example 4:
3.0 parts of Rhizoma amorphophalli micropowders are added 100 parts of water (solid content 3.0%) after gelatinization under 40 ℃ of temperature, and the passing ratio pump adds refrigerative with potassium hydroxide part neutral vinylformic acid (degree of neutralization is 80mol%), and full powder of konjaku and vinylformic acid mass ratio are 1: 80.Add the initiator potassium persulfate of vinylformic acid 0.5Wt% and the linking agent N of 0.4Wt%; N '-methylene-bisacrylamide; stir and logical nitrogen protection; after the copolyreaction of 60 ℃ of temperature initiation graftings, following reaction solution to spray to enter temperature with nitrogen is that 90 ℃ helix tube type turbulent flow reactor carries out graft copolymerization, reaction times 240Sec; spiral is extruded and is sent into drum-type film forming moisture eliminator; make reactant be membranaceous drying, 120 ℃ of drying temperatures, time of drying 3min.Dry back product is the film sheet, through being ground into 200 purpose granular products.The specific absorption of product pure water is 1600 times, and the specific absorption of physiological saline can reach 150 times, and the specific absorption of 1min pure water and the specific absorption of physiological saline are respectively 950 times and 86 times.
Claims (4)
1, a kind of super strength water absorbent, it is made by following materials of weight proportions:
A, Rhizoma amorphophalli powder and vinylformic acid mass ratio are 1: 10～1: 100;
B, vinylformic acid are in advance with alkali part neutral vinylformic acid, and degree of neutralization is 60～90mol%;
C, initiator and acrylic acid mass ratio are 0.1～1%;
D, linking agent and acrylic acid mass ratio 0.01～0.8%.
2, a kind of preparation method who realizes the described super strength water absorbent of claim 1, it comprises the following steps:
A, with Rhizoma amorphophalli powder gelatinization under 30-60 ℃ of temperature, solid content 0.5-5.0%;
B, passing ratio pump add refrigerative with alkali part neutral vinylformic acid;
C, adding initiator and linking agent stir and logical nitrogen or argon shield, in the copolyreaction of 30-70 ℃ of temperature initiation grafting;
D, to follow reaction solution to spray to enter temperature with nitrogen or argon gas be that 70-130 ℃ helix tube type turbulent flow reactor carries out graft copolymerization, reaction times 30-300Sec;
E, spiral are extruded and are sent into drum-type film forming moisture eliminator, make reactant be membranaceous drying, drying temperature 90-180 ℃, time of drying 0.5-10min, dry back product is the film sheet;
F, the film sheet is ground into 60-300 purpose granular product.
3, super strength water absorbent as claimed in claim 1 is characterized in that initiator is Potassium Persulphate, ammonium persulphate or ceric ammonium nitrate.
4, super strength water absorbent as claimed in claim 1 is characterized in that linking agent is N, N '-methylene-bisacrylamide, epoxy chloropropane, 1,4-butyleneglycol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021477337A CN1176126C (en) | 2002-11-26 | 2002-11-26 | Superstrong water absorber and its preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021477337A CN1176126C (en) | 2002-11-26 | 2002-11-26 | Superstrong water absorber and its preparation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1410463A true CN1410463A (en) | 2003-04-16 |
| CN1176126C CN1176126C (en) | 2004-11-17 |
Family
ID=4751263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021477337A Expired - Lifetime CN1176126C (en) | 2002-11-26 | 2002-11-26 | Superstrong water absorber and its preparation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1176126C (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100402566C (en) * | 2005-04-19 | 2008-07-16 | 姜发堂 | Edible deciccant |
| CN100500413C (en) * | 2003-07-11 | 2009-06-17 | 株式会社神户制钢所 | Metering feeder, kneading and extruding equipment |
| CN100577700C (en) * | 2007-11-27 | 2010-01-06 | 湖北省农业科学院农产品加工与核农技术研究所 | Method for preparing high water absorption konjac glucomannan crylic acid irradiation graft polymers |
| CN102041799A (en) * | 2010-11-17 | 2011-05-04 | 南京工业大学 | Method for manufacturing water retaining/absorption dam for intercepting fire fighting wastewater |
| CN101549243B (en) * | 2009-04-14 | 2011-07-20 | 张红军 | Desiccant composition |
| CN102382262A (en) * | 2011-08-15 | 2012-03-21 | 武汉力诚生物科技有限公司 | One-step continuous granulation preparation method for water absorbent granule |
| CN102561264A (en) * | 2012-02-21 | 2012-07-11 | 江苏省环境科学研究院 | Ecological protective slope and establishment method thereof |
| CN102965997A (en) * | 2012-11-19 | 2013-03-13 | 浙江理工大学 | Preparation method of high-performance composite stabilized paper |
| CN109393556A (en) * | 2018-12-12 | 2019-03-01 | 武汉锐致科技有限公司 | A kind of humectation cooling filter stick of cigarette products and preparation method thereof |
| CN113511926A (en) * | 2021-04-28 | 2021-10-19 | 新至农业生态科技有限公司 | Method for comprehensively utilizing livestock and poultry manure resources and returning to field |
-
2002
- 2002-11-26 CN CNB021477337A patent/CN1176126C/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100500413C (en) * | 2003-07-11 | 2009-06-17 | 株式会社神户制钢所 | Metering feeder, kneading and extruding equipment |
| CN100402566C (en) * | 2005-04-19 | 2008-07-16 | 姜发堂 | Edible deciccant |
| CN100577700C (en) * | 2007-11-27 | 2010-01-06 | 湖北省农业科学院农产品加工与核农技术研究所 | Method for preparing high water absorption konjac glucomannan crylic acid irradiation graft polymers |
| CN101549243B (en) * | 2009-04-14 | 2011-07-20 | 张红军 | Desiccant composition |
| CN102041799A (en) * | 2010-11-17 | 2011-05-04 | 南京工业大学 | Method for manufacturing water retaining/absorption dam for intercepting fire fighting wastewater |
| CN102382262A (en) * | 2011-08-15 | 2012-03-21 | 武汉力诚生物科技有限公司 | One-step continuous granulation preparation method for water absorbent granule |
| CN102382262B (en) * | 2011-08-15 | 2013-04-10 | 武汉力诚生物科技有限公司 | One-step continuous granulation preparation method for water absorbent granule |
| CN102561264A (en) * | 2012-02-21 | 2012-07-11 | 江苏省环境科学研究院 | Ecological protective slope and establishment method thereof |
| CN102965997A (en) * | 2012-11-19 | 2013-03-13 | 浙江理工大学 | Preparation method of high-performance composite stabilized paper |
| CN109393556A (en) * | 2018-12-12 | 2019-03-01 | 武汉锐致科技有限公司 | A kind of humectation cooling filter stick of cigarette products and preparation method thereof |
| CN113511926A (en) * | 2021-04-28 | 2021-10-19 | 新至农业生态科技有限公司 | Method for comprehensively utilizing livestock and poultry manure resources and returning to field |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1176126C (en) | 2004-11-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101638456B (en) | Method for preparing super absorbent resin with cross-linked structure by using potato starch as raw material | |
| CN101638458B (en) | Method for preparing super absorbent resin by using carboxymethyl potato starch as raw material | |
| CN1176126C (en) | Superstrong water absorber and its preparation method | |
| Varshney et al. | Chemical functionalization of cellulose derived from nonconventional sources | |
| Jane | Starch properties, modifications, and applications | |
| Meshram et al. | Graft copolymers of starch and its application in textiles | |
| CN103073684A (en) | Starch/acrylic acid composite super absorbent resin preparation method | |
| CN101045776A (en) | Method for synthesizing high water absorption resin by glutinous wheat starch | |
| WO1992010433A1 (en) | Use of water-soluble natural graft polymers as water-treatment agents | |
| Smidsrººd et al. | Alginate gelation technologies | |
| CN101857665A (en) | Fully-degradable starch hydrogel and preparation method thereof | |
| Liu et al. | One‐step synthesis of corn starch urea based acrylate superabsorbents | |
| CN101638459A (en) | Method for preparing super absorbent resin with high potassium content by using carboxymethyl potato starch as raw material | |
| CN103059224A (en) | Starch/acrylic acid composite super-absorbent resin | |
| Elango et al. | Structural diversity, functional versatility and applications in industrial, environmental and biomedical sciences of polysaccharides and its derivatives–A review | |
| Willett et al. | Reactive extrusion of starch–polyacrylamide graft copolymers using various starches | |
| CN101735394A (en) | Low monomer residue gardon asparagus superstrong water absorber and microwave radiation preparation method thereof | |
| CN108715765B (en) | Method for preparing hemicellulose-based water-retaining agent by using hemicellulose emulsion through microchannel reaction device | |
| CN1158317C (en) | Multi-element graft copolymer of starch and its preparing process and application | |
| CN112390957A (en) | Preparation method of salt-resistant water-retaining agent | |
| CN101423588A (en) | Industrial synthesis method for producing high water absorption resin | |
| CN1224028A (en) | High hydroscopicity material of graft bentonite and its producing process | |
| CN1268661C (en) | Starch high water absorption resin production process | |
| HANNA et al. | Extrudates of starch‐xanthan gum mixtures as affected by chemical agents and irradiation | |
| Kapelko‐Żeberska et al. | Physically and chemically modified starches in food and non‐food industries |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: WUHAN LICHENG BIOLOGICAL SCIENCE + TECHNOLOGY CO., Free format text: FORMER OWNER: JIANG FATANG Effective date: 20130129 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130129 Address after: 430068 1 South tech Industrial Park, East Lake Development Zone, Wuhan, Hubei Patentee after: WUHAN LICHENG BIOTECHNOLOGY Co.,Ltd. Address before: 430068 Department of biological engineering, Nanhu Hubei Institute of technology, Wuhan, Wuchang, Hubei Patentee before: Jiang Fatang |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20041117 |