CN101781384A - Technology of synthesis of superabsorbent polyacrylate resin through ultraviolet polymerization - Google Patents
Technology of synthesis of superabsorbent polyacrylate resin through ultraviolet polymerization Download PDFInfo
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- CN101781384A CN101781384A CN 200910113209 CN200910113209A CN101781384A CN 101781384 A CN101781384 A CN 101781384A CN 200910113209 CN200910113209 CN 200910113209 CN 200910113209 A CN200910113209 A CN 200910113209A CN 101781384 A CN101781384 A CN 101781384A
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Abstract
The invention aims to provide a technology of synthesis of superabsorbent polyacrylate resin, which has the advantages of environmental protection, energy conservation and simple technological conditions and process. Compared with the inverse emulsion polymerization, the inverse suspension polymerization, the chemical polymerization of aqueous solution and the grafting polymerization, the invention has the advantages of simple technological process, high product purity, short synthesis period, no solvent pollution, simple equipment, no needs for nitrogen protection and post-treatment, easy industrialization, low cost and the like. For the superabsorbent polyacrylate resin prepared through the preparation process with ultraviolet initiation, the absorbing rate of deionized water is 3052-4100g/g, the absorbing rate of normal saline (NaCl solution of 0.9 percent) is 320-440g/g, the absorbing rate of rainwater (with the pH being 6) is 2260g/g, the absorbing rate of artificial urine is 120-200g/g, and the absorbing rate of artificial blood is 270-350g/g.
Description
Technical field
The present invention relates to a kind of preparation technology of superabsorbent polyacrylate resin, belong to uv photopolymerization technology.
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 after chemical fertilizer, agricultural chemicals, mulch film the 4th be hopeful the agrochemicals goods accepted by the peasant most.
People such as USDA north research centre C.R.Russell 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.The research of China's super absorbent resin is since early 1980s, successively the water-retaining agent performance and the synthetic method of starch system, fiber system, synthetic system are studied from 1981 as Hunan University Of Xiangtan, the patent and the bibliographical information of after this domestic research super absorbent resin emerge in an endless stream.The method of polymeric polymer propene Barbiturates super absorbent resin has much at present, and its traditional polymerization process has reversed emulsion polymerization, inverse suspension polymerization, methods such as chemistry of aqueous solution polymerization and graft polymerization method.These method synthesis of superabsorbent polyacrylate resin need initiator, organic solvent, 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, the product salt tolerance is relatively poor, preparation process and complicated condition.
Research contents
It is simple to the objective of the invention is to develop a kind of environmental protection, energy-conservation, processing condition and process, the technology of synthesis of superabsorbent polyacrylate resin.In contrast to reversed emulsion polymerization, the inverse suspension polymerization method, it is simple that chemistry of aqueous solution polymerization and graft polymerization method have technological process, the product purity height, generated time is short, solvent-free pollution, and equipment is simple, need not to protect nitrogen and aftertreatment, easily industrialization, characteristics such as cost is lower.
Technical scheme of the present invention: with acrylic monomer and sodium hydroxide (potassium) is raw material; the employing wavelength is that 365nm, power are that the straight pipe type ultraviolet high-pressure mercury lamps of 1000W is that polymerization causes light source; under open environment, nitrogen-less protection, polymerization makes superabsorbent polyacrylate resin.
Converging operation step: with demarcating in good sodium hydroxide (potassium) solution and acrylic monomer, make that acrylic monomer and vinylformic acid salt monomer reach certain proportion in the reaction system, open the power supply of automatic conveying type uv photopolymerization device successively, blower fan and transmitting device, modulation ultraviolet high-pressure mercury lamps height (can modulate height between 25～35cm), open needed ultraviolet lamp, then at room temperature the solution for preparing, the opening for feed of putting into automatic conveying type uv photopolymerization device begins to carry out polymerization, polymerization time is 15～35min, get the rubber-like elasticity thin slice from discharge port, be placed on blowing-type loft drier (90 ℃) oven dry after shredding, (60 orders～80 orders) are pulverized with ball mill in dry back.
Adopting the high-hydroscopicity polyacrylate resinoid suction deionized water rate of this prepared is 3052～4100g/g, inhaling physiological saline (the 0.9%NaCl aqueous solution) rate is 320～440g/g, inhaling rainwater (pH is about 6) rate is 2260g/g, inhaling the artificial urine rate is 120～200g/g, and inhaling artificial blood rate is 270～350g/g.
Figure of description
Scheme automatic conveying type uv photopolymerization device
Among the figure: 1, automatic conveying type uv photopolymerization device body; 2, equipment way circuit switchboard; 3, equipment body support; 4, contactor control panel; 5, discharge port workplatform; 6, uv photopolymerization storehouse; 7, high-power emptying gas blower fan; 8, vapor pipe; 9, ultraviolet lamp height adjusting link in the polymerization storehouse; 10, lampshade; 11, straight tube shape ultraviolet high-pressure mercury lamps; 12, small power suck blower fan; 13, conveying belt saddle; 14, bearing support; 15, conveying belt beaming roller; 16, opening for feed workplatform; 17, the workplatform adjustment is supported; 18, conveying belt tensioning beaming roller; 19, stainless steel metal silk screen conveying belt; 20, by movable strap disc; 21, conveying belt active beaming roller; 22, power belt; 23, the closed barretter of 1000W; 24, buncher.
Claims (9)
1. the present invention is the automatic conveying type uv photopolymerization of an a kind of usefulness device, is raw material with acrylic monomer and sodium hydroxide (potassium) solution, and UV-light causes the technology of preparation high-hydroscopicity polyacrylate resinoid.
2. press the described UV-light of claims 1 and cause the technology of preparation high-hydroscopicity polyacrylate resinoid, it is characterized in that: conveying type uv photopolymerization device is by the controlled automatic conveying device of 3 straight tube shape ultraviolet high-pressure mercury lamps, the rotary speed of independent control respectively, blower fan, uv photopolymerization storehouse be configured to automatically.
3. press claims 1 described UV-light and cause the technology for preparing high-hydroscopicity polyacrylate resinoid, it is characterized in that: each straight tube shape ultraviolet high-pressure mercury lamps wavelength is 365nm, power is 1000W, in the uv photopolymerization storehouse, arrange side by side, fix by lampshade, lampshade is connected with ultraviolet lamp height adjusting link in the polymerization storehouse, can be by polymerization requirement degree of heightening in 20cm～35cm scope, polyreaction is carried out in the uv photopolymerization storehouse of sealing, the warehouse left end has been installed a high-power emptying gas blower fan, two small power suck blower fans have been installed behind, have been come the temperature in the controlled polymerization storehouse.
4. press claims 1 described UV-light and cause the technology for preparing high-hydroscopicity polyacrylate resinoid, it is characterized in that: the controlled automatic conveying device of rotary speed by stainless steel metal silk screen conveying belt, conveying belt saddle, bearing support, conveying belt beaming roller, conveying belt tensioning beaming roller, by movable strap disc, conveying belt initiatively parts such as beaming roller, power belt, buncher form the adjustable joint motor rotating speed controlled polymerization time.
5. press claims 1 described UV-light and cause the technology for preparing high-hydroscopicity polyacrylate resinoid, it is characterized in that: all devices parts are supported by main body rack, folding charging, discharging workplatform are established in the main body rack both sides, and Circuits System partly is made up of ultraviolet lamp start-stop circuit, transport tape electric motor stepless speed regulation circuit and blower fan start-stop circuit etc.
6. press claims 1 described UV-light and cause the technology for preparing high-hydroscopicity polyacrylate resinoid, it is characterized in that: raw material is acrylic monomer and sodium hydroxide (potassium) solution.
7. press claims 1 described UV-light and cause the technology for preparing high-hydroscopicity polyacrylate resinoid, it is characterized in that: polyreaction need not to carry out under nitrogen protection.
8. press claims 1 described UV-light and cause the technology for preparing high-hydroscopicity polyacrylate resinoid, it is characterized in that: operation steps is, with demarcating in good sodium hydroxide (potassium) solution and acrylic monomer, make that acrylic monomer and vinylformic acid salt monomer reach certain proportion in the reaction system, open the power supply of automatic conveying type uv photopolymerization device successively, blower fan and transmitting device, modulation ultraviolet high-pressure mercury lamps height (can modulate height between 25～35cm), open needed ultraviolet lamp, then at room temperature the solution for preparing, the opening for feed of putting into automatic conveying type uv photopolymerization device begins to carry out polymerization, polymerization time is 15～35min, get the rubber-like elasticity thin slice from discharge port, be placed on blowing-type loft drier (90 ℃) oven dry after shredding, (60 orders～80 orders) are pulverized with ball mill in dry back.
9. press claims 1 described UV-light and cause the technology for preparing high-hydroscopicity polyacrylate resinoid, it is characterized in that: adopting the suction deionized water rate of this prepared high-hydroscopicity polyacrylate resinoid is 3052～4100g/g, inhaling physiological saline (the 0.9%NaCl aqueous solution) rate is 320～440g/g, inhaling rainwater (pH is about 6) rate is 2260g/g, inhaling the artificial urine rate is 120～200g/g, and inhaling artificial blood rate is 270～350g/g.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910113209 CN101781384A (en) | 2009-01-15 | 2009-01-15 | Technology of synthesis of superabsorbent polyacrylate resin through ultraviolet polymerization |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910113209 CN101781384A (en) | 2009-01-15 | 2009-01-15 | Technology of synthesis of superabsorbent polyacrylate resin through ultraviolet polymerization |
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| CN101781384A true CN101781384A (en) | 2010-07-21 |
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| CN 200910113209 Pending CN101781384A (en) | 2009-01-15 | 2009-01-15 | Technology of synthesis of superabsorbent polyacrylate resin through ultraviolet polymerization |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104611926A (en) * | 2014-12-30 | 2015-05-13 | 中国地质大学（武汉） | Method for preparing ion exchange fiber by ultraviolet grafting |
| CN105111334A (en) * | 2015-09-01 | 2015-12-02 | 新疆大学 | Ultraviolet (UV) polymerization device |
| CN105682787A (en) * | 2013-10-31 | 2016-06-15 | 韩化石油化学公司 | Apparatus for manufacturing high absorbent resin and method for manufacturing high absorbent resin using same |
-
2009
- 2009-01-15 CN CN 200910113209 patent/CN101781384A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105682787A (en) * | 2013-10-31 | 2016-06-15 | 韩化石油化学公司 | Apparatus for manufacturing high absorbent resin and method for manufacturing high absorbent resin using same |
| EP3064269A4 (en) * | 2013-10-31 | 2017-08-02 | Hanwha Chemical Corporation | Apparatus for manufacturing high absorbent resin and method for manufacturing high absorbent resin using same |
| CN104611926A (en) * | 2014-12-30 | 2015-05-13 | 中国地质大学（武汉） | Method for preparing ion exchange fiber by ultraviolet grafting |
| CN105111334A (en) * | 2015-09-01 | 2015-12-02 | 新疆大学 | Ultraviolet (UV) polymerization device |
| CN105111334B (en) * | 2015-09-01 | 2017-03-29 | 新疆大学 | Uv photopolymerization device |
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Open date: 20100721 |