CN101993516B - Ultraviolet light initiation preparation method of polyacrylate type composite super absorbent resin - Google Patents
Ultraviolet light initiation preparation method of polyacrylate type composite super absorbent resin Download PDFInfo
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- CN101993516B CN101993516B CN 200910113423 CN200910113423A CN101993516B CN 101993516 B CN101993516 B CN 101993516B CN 200910113423 CN200910113423 CN 200910113423 CN 200910113423 A CN200910113423 A CN 200910113423A CN 101993516 B CN101993516 B CN 101993516B
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- absorbent resin
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Abstract
The invention provides a method for preparing polyacrylate type composite super absorbent resin through ultraviolet light initiation, which belongs to the technical field of polymer composite materials. The method comprises the concrete processes of: taking a certain amount of soluble starch; adding a proper amount of water; pasting the materials for about 30 minutes at the room temperature; sequentially adding diatomite and acrylic acid neutralized by sodium (potassium) hydroxide; fully and uniformly mixing the solution, and irradiating the solution for a certain time under an ultraviolet high-voltage mercury lamp at the room temperature; and taking out the product and drying the products. The method has the advantages of simple technical process, short synthesis time, no three-waste pollution, simple equipment, no need of nitrogen conservation and post treatment, easy industrialization, lower cost, uniform structure of prepared materials, high purity, good salt endurance, high water absorption rate and the like. When adopted, the composite super absorbent resin prepared by the polymerization method has the deionized water absorption rate between 3520 and 3660 g/g and the physiological saline (0.9 percent NaCl water solution) absorption rate between 220 and 280 g/g.
Description
Technical field
The present invention relates to a kind of absorbent resin, belong to the agricultural water-absorbing resin of high-salt tolerance.
Background technology
The current agricultural development of China is faced with very stern reality, and water resources is very poor, and severe water and soil erosion has also been brought serious ecological environment problem simultaneously; On the other hand, China's water utilization rate is not high, and wasting phenomenon is comparatively serious.Therefore, rationally efficiently utilizing limited water resource, the water-saving agricultural of realization will be an inexorable trend of China's agricultural development.In numerous water conservation and moisture-holding technical measures, the chemical water-saving technology that develops rapidly in recent years is that the application of super absorbent resin (SAR) is just more and more paid attention to by people.SAR is as a kind of novel high polymer material; Can be in fields such as agricultural, forestry, water conservancy, improving desert performances keeping crop seedling from drought, increasing both production and income, improve the soil, check winds and fix drifting sand, multiple function such as soil conservation, thereby generally believed in the world be continue chemical fertilizer, agricultural chemicals, mulch film after the 4th be hopeful most by the agrochemicals goods of peasant's acceptance.
People such as the north research centre C.R.Russell of USDA at first began one's study from starch-grafted vinyl cyanide in 1961; Thereafter people such as G.F.Fanta proceeded the research of starch-grafted vinyl cyanide on the basis of forefathers' research, and had at first delivered the paper that the starch conversion material has superior water-retaining capacity in 1966.Water-retaining agent has three major types: synthesizing series, starch series and Mierocrystalline cellulose series; Wherein starch series extensive, biodegradable owing to raw material sources, can not bring secondary pollution, output is big, price is low, a safe focus that becomes Recent study, enjoys people's attention.The method of polymeric acrylic acid sodium has much at present, and its traditional polymerization method has reversed emulsion polymerization, inverse suspension polymerization, methods such as chemistry of aqueous solution polymerization and graft polymerization method.These method synthesizing high-hydroscopicity ZX-Is need initiator, organic solvent, linking agent, logical nitrogen etc. usually; And have following shortcoming: the reaction times is longer; Product purity is not high; Discharging of waste liquid and product contamination that aftertreatment processing complicated and organic disperse phase can bring inevitably, its product salt tolerance is relatively poor.
Research contents
The objective of the invention is to develop a kind of environmental protection, energy-conservation, processing condition are simple, have the compound method of high-salt tolerance polyacrylate composite water absorbing property resin.It is simple that this polymerization has technological process, and cost is low, and product purity is high, and generated time is short, three-waste free pollution, and equipment is simple, need not to protect nitrogen and aftertreatment, is prone to characteristics such as industriallization.
Technical scheme of the present invention: with vinylformic acid, starch, zeyssatite and sodium hydroxide (potassium) is polymerization single polymerization monomer; The employing wavelength is that 365nm, power are that the straight pipe type ultraviolet high-pressure mercury lamps of 1000W is the polymerization light source; Under open environment; Nitrogen-less protection, polymerization make salt tolerance polyacrylate composite highly-absorbent resin.
Converging operation step: get a certain amount of Zulkovsky starch and add an amount of water, lakeization about 30 minutes at room temperature, the vinylformic acid that adds zeyssatite then successively and become reconciled in sodium hydroxide (potassium); After the solution thorough mixing is even; At room temperature be placed on the distance of ultraviolet high-pressure mercury lamps 25～35cm, irradiation 25～40min time, get the rubber-like elasticity thin slice; Be placed on blowing-type loft drier (90 ℃) oven dry after shredding, (60 orders～80 orders) are pulverized with ball mill in dry back.
Adopt the composite high-water uptake property resin of this polymerization method preparation, it inhales the deionized water rate is 3520～3660g/g, and inhaling saline water (the 0.9%NaCl aqueous solution) rate is 220～280g/g.
Claims (4)
1. a uv-radiation prepares the method for polyacrylate composite highly-absorbent resin; Its technical characterictic is: operation steps is to get a certain amount of Zulkovsky starch and add an amount of water, gelatinization at room temperature 30 minutes; The vinylformic acid that adds zeyssatite then successively and become reconciled in sodium hydroxide or Pottasium Hydroxide; After the solution thorough mixing is even, at room temperature be placed on the distance of ultraviolet high-pressure mercury lamps 25～35cm, irradiation 25～40min time; Take out the back oven dry, pulverize 60 orders～80 orders; Wherein contain in the prescription of synthetic this water-retaining agent: starch and acrylic acid weight ratio are 0.05: 1～0.25: 1, and zeyssatite and acrylic acid weight ratio are 0.05: 1～0.20: 1, and sodium hydroxide or Pottasium Hydroxide and acrylic acid mol ratio are 0.60: 1～0.85: 1; Used uv lamp wavelength is that 365nm, power are the straight pipe type high voltage mercury lamp of 1000W, and it is 75%～85% that the sodium hydroxide solution of said vinylformic acid use 15%～25% is neutralized to degree of neutralization.
2. by the preparation method of the described polyacrylate composite highly-absorbent resin of claim 1, its technical characterictic is: do not add any light trigger and linking agent, need not nitrogen protection.
3. by the preparation method of the described polyacrylate composite highly-absorbent resin of claim 1, its technical characterictic is: it is 10%～25% starch hydrogel that said starch needs gelatinization at normal temperatures to process starch content.
4. press the preparation method of the described polyacrylate composite highly-absorbent resin of claim 1; Its technical characterictic is: it inhales the deionized water rate is 3520～3660g/g; Inhaling the saline water rate is 220～280g/g, and described saline water is the 0.9%NaCl aqueous solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910113423 CN101993516B (en) | 2009-08-19 | 2009-08-19 | Ultraviolet light initiation preparation method of polyacrylate type composite super absorbent resin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910113423 CN101993516B (en) | 2009-08-19 | 2009-08-19 | Ultraviolet light initiation preparation method of polyacrylate type composite super absorbent resin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101993516A CN101993516A (en) | 2011-03-30 |
| CN101993516B true CN101993516B (en) | 2012-12-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200910113423 Expired - Fee Related CN101993516B (en) | 2009-08-19 | 2009-08-19 | Ultraviolet light initiation preparation method of polyacrylate type composite super absorbent resin |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104619412B (en) * | 2012-09-11 | 2017-07-11 | 株式会社日本触媒 | Polyacrylic acid (salt) is the manufacture method and its water absorbing agent of water absorbing agent |
| CN103588934A (en) * | 2013-11-20 | 2014-02-19 | 宜兴丹森科技有限公司 | Method for preparing salt tolerant super absorbent resin by bentonite |
| CN105777994A (en) * | 2016-03-16 | 2016-07-20 | 张学健 | Kieselguhr-based composite material and preparation method thereof |
| CN107880895B (en) * | 2017-11-28 | 2020-06-30 | 信阳师范学院 | Water retention material with low-grade rock slurry soil as main raw material and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101195674A (en) * | 2006-12-06 | 2008-06-11 | 新疆大学 | Method for producing starch based amphiprotic absorbent resin with semi-interpenetrating network configuration |
| CN101240052A (en) * | 2008-02-29 | 2008-08-13 | 厦门大学 | Method for preparing acrylic acid series semi-interpenetration network composite high water absorption resin |
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2009
- 2009-08-19 CN CN 200910113423 patent/CN101993516B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101195674A (en) * | 2006-12-06 | 2008-06-11 | 新疆大学 | Method for producing starch based amphiprotic absorbent resin with semi-interpenetrating network configuration |
| CN101240052A (en) * | 2008-02-29 | 2008-08-13 | 厦门大学 | Method for preparing acrylic acid series semi-interpenetration network composite high water absorption resin |
Non-Patent Citations (1)
| Title |
|---|
| Suda Kiatkamjornwong et al..Synthesis and property characterization of cassava starch grafted poly[acrylamide-co-(maleic acid)] superabsorbent via γ-irradiation.《Polymer》.2002,第43卷(第14期),第3915-3924页. * |
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| CN101993516A (en) | 2011-03-30 |
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