CN101205276A - Low-cost nutrition type water keeping agent and preparation method thereof - Google Patents
Low-cost nutrition type water keeping agent and preparation method thereof Download PDFInfo
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- CN101205276A CN101205276A CNA2006101368942A CN200610136894A CN101205276A CN 101205276 A CN101205276 A CN 101205276A CN A2006101368942 A CNA2006101368942 A CN A2006101368942A CN 200610136894 A CN200610136894 A CN 200610136894A CN 101205276 A CN101205276 A CN 101205276A
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Abstract
The invention belongs to the technical field of the supper absorbent resin and discloses a preparation method for low-cost nutrition type water retaining agent. The invention adopts the acrylic acid as a monomer, adopts the aqueous solution polymerization method and adds a large amount of urea as the nutritional agent, thus the cost is not only lowered but the water retaining agent simultaneously has the nutritional function as well. The water retaining agent which is characterized by a low cost and a nutritional function has excellent water absorption and retention performances, higher gel strength and better biochemical stability, can be widely applied to the agriculture and forestry and is convenient for the industrialized production.
Description
Technical field
The invention belongs to the super absorbent resin field, relate to a kind of low-cost nutrition type water keeping agent and preparation method thereof.
Background technology
At present, the research of water-holding agent aspect agroforestry is a lot, but because business-like water-holding agent on the high side, performance is single, is to hinder the critical problem of water-holding agent in the arid area large-area applications.Domestic scholars is done a lot of work aspect reducing cost, but great majority research concentrates on composite inorganic mineral substance aspect.
Chinese patent CN1693320A discloses compound moisture holding agent in low cost of a kind of organic and inorganic and preparation method thereof, adopts Compound Punch rod preparation water-holding agent.Though reduced cost, but still only had suction and release water function.Therefore, under the prerequisite that reduces cost, the augment nutritional function is one of main direction of present water-holding agent research simultaneously.
Summary of the invention
In the present invention we to have selected the more vinylformic acid of present research (salt) for use be monomer, adopt cheap urea and Secondary ammonium phosphate as nutrition agent simultaneously, add initiator and linking agent, polymerization in the aqueous solution, crosslinked, after drying, the pulverizing, make water-absorbing-retaining performance with excellence, higher gel-strength, the water good reversibility is released in suction, the biological and chemical good stability, the low-cost nutrition type water keeping agent of long service life.The production cost of the super absorbent resin that the present invention produces reduces greatly, can widespread use, and be convenient to large-scale production.
The present invention adopts aqueous solution polymerization method: with in the alkali and generate sodium acrylate, be made into mass percent and be 10%～35% solution, urea is joined in the acrylic acid solution, add-on is 10%～200% of an Acrylic Acid Monomer weight, after stirring, add linking agent successively, linking agent is glycerol or N, N '-methylene-bisacrylamide, add-on is 0.02%～1% of an Acrylic Acid Monomer weight; Add initiator again, wherein the oxygenant initiator is Potassium Persulphate, Sodium Persulfate or hydrogen peroxide, and reductive agent is sodium bisulfite, S-WAT, potassium metabisulfite (sodium) or xitix.Add-on is 0.001%～0.5% of an Acrylic Acid Monomer weight, carries out polymerization then, and aqueous temperature is 10～80 ℃, polyreaction 2～6h; After after the granulation, drying, pulverizing, the finished product, gained super absorbent resin suction multiple is 100～2000 times, inhaling the salt solution multiplying power is 30～100 times.
Embodiment
Embodiment 1:
Getting the 100g mass percent is that 35% sodium acrylate places beaker, adds the 3.5g urea then, adds linking agent glycerol 0.007g, adds redox initiator again, oxygenant ammonium persulphate 0.35g, reductive agent sulfurous acid 0.35g; Carry out polymerization then, temperature is 80 ℃, polyreaction 2h; After after the granulation, drying, pulverizing the finished product, gained super absorbent resin water absorbent rate is 500 times, inhaling the salt solution multiplying power is 80 times.
Embodiment 2:
Getting the 100g mass percent is that 10% sodium acrylate places beaker, adds the 20g urea then, adds linking agent N, and N '-methylene-bisacrylamide 0.002g adds redox initiator again, oxygenant Potassium Persulphate 0.05g, reductive agent S-WAT 0.05g; Carry out polymerization then, temperature is 50 ℃, polyreaction 6h; After after the granulation, drying, pulverizing the finished product, gained super absorbent resin water absorbent rate is 2000 times, inhaling the salt solution multiplying power is 100 times.
Embodiment 3:
Getting the 100g mass percent is that 35% sodium acrylate places beaker, adds the 30g urea then, adds linking agent N, N '-methylene-bisacrylamide 0.5g, add redox initiator again, oxygenant ammonium persulphate 0.35g, reductive agent potassium metabisulfite (sodium) 0.35g; Carry out polymerization then, temperature is 60 ℃, polyreaction 6h; After after the granulation, drying, pulverizing the finished product, gained super absorbent resin water absorbent rate is 100 times, inhaling the salt solution multiplying power is 30 times.
Embodiment 4:
Getting the 100g mass percent is that 25% sodium acrylate places beaker, adds the 25g urea then, adds linking agent glycerol 0.007g, adds redox initiator again, oxidants hydrogen peroxide 0.00025g, reductive agent xitix 0.00025g; Carry out polymerization then, temperature is 10 ℃, polyreaction 6h; After after the granulation, drying, pulverizing the finished product, gained super absorbent resin water absorbent rate is 450 times, inhaling the salt solution multiplying power is 45 times.
Claims (5)
1. low-cost nutrition type water keeping agent and preparation method thereof, the raw material moiety that it is characterized in that water-holding agent: the method that adopts aqueous solution polymerization, at first vinylformic acid is made into mass percent and is 10%～35% the sodium acrylate aqueous solution, add urea then, add-on is 10%～200% of vinylformic acid (sodium) weight, add linking agent then, linking agent is glycerol or N, N '-methylene-bisacrylamide, add-on is 0.02%～1% of a monomer weight, and then adding redox agent, wherein oxygenant is Potassium Persulphate (sodium), ammonium persulphate or hydrogen peroxide, reductive agent are sodium bisulfite, S-WAT, Sodium Metabisulfite or xitix, add-on are 0.001%～0.5% of monomer weights; Polymerization temperature is 10～80 ℃, polymerization time 2～6h; After granulating and drying, pulverizing, get the finished product.
2. according to claim 1, the preparation method of water-holding agent is characterized in that the monomer vinylformic acid of water-holding agent is through neutralization, the monomer whose mass percent is 10%～35%, urea dosage 10%～200%, linking agent dosage 0.02%～10%, initiator dosage 0.001%～0.5%, 10～80 ℃ of reactions of polymerization temperature, 2～6h gets the finished product after granulation, drying, pulverizing.
3. described in claim 2, it is characterized in that adding the urea amount is 10%～200% of sodium acrylate monomers weight.
4. the method described in claim 2 is characterized in that polymerization single polymerization monomer is a sodium acrylate.
5. the method described in claim 2 is characterized in that the vinylformic acid N-process, and the alkali that uses is yellow soda ash, sodium bicarbonate or sodium hydroxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101368942A CN101205276A (en) | 2006-12-18 | 2006-12-18 | Low-cost nutrition type water keeping agent and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101368942A CN101205276A (en) | 2006-12-18 | 2006-12-18 | Low-cost nutrition type water keeping agent and preparation method thereof |
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| Publication Number | Publication Date |
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| CN101205276A true CN101205276A (en) | 2008-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2006101368942A Pending CN101205276A (en) | 2006-12-18 | 2006-12-18 | Low-cost nutrition type water keeping agent and preparation method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101985508A (en) * | 2010-10-09 | 2011-03-16 | 内蒙古大学 | Preparation method of super absorbent resin containing plant growth regulator and dehydration Murashige and Skoog (MS) culture medium |
| CN102603420A (en) * | 2012-03-31 | 2012-07-25 | 王康 | Preparation method of water retention type fertilizer |
| CN102603421A (en) * | 2012-03-31 | 2012-07-25 | 王康 | Water-retaining fertilizer |
| CN103183760A (en) * | 2011-12-29 | 2013-07-03 | 卢柳 | Process for producing nutritional type water-retaining agent by using chicken manure as auxiliary material |
| CN103387680A (en) * | 2013-08-02 | 2013-11-13 | 中国石油集团川庆钻探工程有限公司 | Method for preparing fluid gel by utilizing formation temperature to form blocking valve to block air layer |
| CN103897122A (en) * | 2012-12-28 | 2014-07-02 | 青岛鑫垚保水高新材料有限公司 | Method for preparing super absorbent polymer (potassium chloride) fire extinguishing agent |
| CN104177535A (en) * | 2014-08-28 | 2014-12-03 | 无锡普爱德环保科技有限公司 | Water absorbing agent for drying machine and preparation method thereof |
| CN106833670A (en) * | 2016-12-16 | 2017-06-13 | 信阳师范学院 | A kind of auxotype compound water retaining agent and preparation method thereof |
-
2006
- 2006-12-18 CN CNA2006101368942A patent/CN101205276A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101985508B (en) * | 2010-10-09 | 2012-05-30 | 内蒙古大学 | Preparation method of super absorbent resin containing plant growth regulator and dehydration Murashige and Skoog (MS) culture medium |
| CN101985508A (en) * | 2010-10-09 | 2011-03-16 | 内蒙古大学 | Preparation method of super absorbent resin containing plant growth regulator and dehydration Murashige and Skoog (MS) culture medium |
| CN103183760A (en) * | 2011-12-29 | 2013-07-03 | 卢柳 | Process for producing nutritional type water-retaining agent by using chicken manure as auxiliary material |
| CN103183760B (en) * | 2011-12-29 | 2015-01-21 | 卢柳 | Process for producing nutritional type water-retaining agent by using chicken manure as auxiliary material |
| CN102603421B (en) * | 2012-03-31 | 2014-07-02 | 嵊州市林美生物科技有限公司 | Water-retaining fertilizer |
| CN102603421A (en) * | 2012-03-31 | 2012-07-25 | 王康 | Water-retaining fertilizer |
| CN102603420B (en) * | 2012-03-31 | 2014-07-09 | 嵊州市林美生物科技有限公司 | Preparation method of water retention type fertilizer |
| CN102603420A (en) * | 2012-03-31 | 2012-07-25 | 王康 | Preparation method of water retention type fertilizer |
| CN103897122A (en) * | 2012-12-28 | 2014-07-02 | 青岛鑫垚保水高新材料有限公司 | Method for preparing super absorbent polymer (potassium chloride) fire extinguishing agent |
| CN103897122B (en) * | 2012-12-28 | 2016-08-10 | 青岛鑫垚地农业科技股份有限公司 | A kind of preparation method of hydroscopic high-molecular resin (potassium chloride) extinguishing chemical |
| CN103387680A (en) * | 2013-08-02 | 2013-11-13 | 中国石油集团川庆钻探工程有限公司 | Method for preparing fluid gel by utilizing formation temperature to form blocking valve to block air layer |
| CN103387680B (en) * | 2013-08-02 | 2016-08-17 | 中国石油集团川庆钻探工程有限公司 | Formation temperature is utilized to generate the preparation method that pack-off valve blocks the fluid gel of gas-bearing formation |
| CN104177535A (en) * | 2014-08-28 | 2014-12-03 | 无锡普爱德环保科技有限公司 | Water absorbing agent for drying machine and preparation method thereof |
| CN106833670A (en) * | 2016-12-16 | 2017-06-13 | 信阳师范学院 | A kind of auxotype compound water retaining agent and preparation method thereof |
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| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20080625 |