CN103224630A - Method for preparing water-absorbing resin by ultraviolet and gamma-ray radiation ionization technique - Google Patents
Method for preparing water-absorbing resin by ultraviolet and gamma-ray radiation ionization technique Download PDFInfo
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- 230000005855 radiation Effects 0.000 title claims abstract description 35
- 239000011347 resin Substances 0.000 title claims abstract description 32
- 229920005989 resin Polymers 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 21
- 230000005251 gamma ray Effects 0.000 title claims abstract description 5
- 238000006243 chemical reaction Methods 0.000 claims abstract description 15
- 239000000178 monomer Substances 0.000 claims abstract description 14
- 238000006386 neutralization reaction Methods 0.000 claims abstract description 14
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000010298 pulverizing process Methods 0.000 claims abstract description 8
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000012216 screening Methods 0.000 claims abstract description 5
- 238000004381 surface treatment Methods 0.000 claims abstract description 5
- 238000001035 drying Methods 0.000 claims abstract description 4
- 238000005516 engineering process Methods 0.000 claims description 13
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 12
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 11
- 239000000243 solution Substances 0.000 claims description 10
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 9
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 6
- 239000012756 surface treatment agent Substances 0.000 claims description 6
- 239000007864 aqueous solution Substances 0.000 claims description 5
- 238000012856 packing Methods 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 5
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims description 4
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 claims description 4
- 239000012670 alkaline solution Substances 0.000 claims description 4
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims description 4
- 238000005286 illumination Methods 0.000 claims description 4
- LVHBHZANLOWSRM-UHFFFAOYSA-N itaconic acid Chemical compound OC(=O)CC(=C)C(O)=O LVHBHZANLOWSRM-UHFFFAOYSA-N 0.000 claims description 4
- 230000007935 neutral effect Effects 0.000 claims description 4
- LRWZZZWJMFNZIK-UHFFFAOYSA-N 2-chloro-3-methyloxirane Chemical compound CC1OC1Cl LRWZZZWJMFNZIK-UHFFFAOYSA-N 0.000 claims description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 3
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 claims description 3
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims description 3
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 3
- 238000010528 free radical solution polymerization reaction Methods 0.000 claims description 3
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 3
- FQPSGWSUVKBHSU-UHFFFAOYSA-N methacrylamide Chemical compound CC(=C)C(N)=O FQPSGWSUVKBHSU-UHFFFAOYSA-N 0.000 claims description 3
- -1 polyoxyethylene Polymers 0.000 claims description 3
- PUPZLCDOIYMWBV-UHFFFAOYSA-N (+/-)-1,3-Butanediol Chemical compound CC(O)CCO PUPZLCDOIYMWBV-UHFFFAOYSA-N 0.000 claims description 2
- DZSVIVLGBJKQAP-UHFFFAOYSA-N 1-(2-methyl-5-propan-2-ylcyclohex-2-en-1-yl)propan-1-one Chemical compound CCC(=O)C1CC(C(C)C)CC=C1C DZSVIVLGBJKQAP-UHFFFAOYSA-N 0.000 claims description 2
- CCJAYIGMMRQRAO-UHFFFAOYSA-N 2-[4-[(2-hydroxyphenyl)methylideneamino]butyliminomethyl]phenol Chemical compound OC1=CC=CC=C1C=NCCCCN=CC1=CC=CC=C1O CCJAYIGMMRQRAO-UHFFFAOYSA-N 0.000 claims description 2
- OMIGHNLMNHATMP-UHFFFAOYSA-N 2-hydroxyethyl prop-2-enoate Chemical compound OCCOC(=O)C=C OMIGHNLMNHATMP-UHFFFAOYSA-N 0.000 claims description 2
- GWZMWHWAWHPNHN-UHFFFAOYSA-N 2-hydroxypropyl prop-2-enoate Chemical compound CC(O)COC(=O)C=C GWZMWHWAWHPNHN-UHFFFAOYSA-N 0.000 claims description 2
- 229910021536 Zeolite Inorganic materials 0.000 claims description 2
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 2
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 2
- 238000013467 fragmentation Methods 0.000 claims description 2
- 238000006062 fragmentation reaction Methods 0.000 claims description 2
- 239000001530 fumaric acid Substances 0.000 claims description 2
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 claims description 2
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 2
- 235000019353 potassium silicate Nutrition 0.000 claims description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 2
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 claims description 2
- 239000010457 zeolite Substances 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 abstract description 7
- 238000006116 polymerization reaction Methods 0.000 abstract description 6
- 238000002360 preparation method Methods 0.000 abstract description 4
- 239000003513 alkali Substances 0.000 abstract description 2
- 230000001678 irradiating effect Effects 0.000 abstract 1
- 230000003472 neutralizing effect Effects 0.000 abstract 1
- 230000035699 permeability Effects 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 14
- 238000012360 testing method Methods 0.000 description 8
- 238000010521 absorption reaction Methods 0.000 description 7
- 238000005303 weighing Methods 0.000 description 7
- 238000003756 stirring Methods 0.000 description 6
- 239000008367 deionised water Substances 0.000 description 5
- 229910021641 deionized water Inorganic materials 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 239000012071 phase Substances 0.000 description 5
- 230000002745 absorbent Effects 0.000 description 4
- 239000002250 absorbent Substances 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 230000002925 chemical effect Effects 0.000 description 3
- 239000003999 initiator Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
- 229920002678 cellulose Polymers 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- JHUFGBSGINLPOW-UHFFFAOYSA-N 3-chloro-4-(trifluoromethoxy)benzoyl cyanide Chemical compound FC(F)(F)OC1=CC=C(C(=O)C#N)C=C1Cl JHUFGBSGINLPOW-UHFFFAOYSA-N 0.000 description 1
- 239000004159 Potassium persulphate Substances 0.000 description 1
- NWGKJDSIEKMTRX-AAZCQSIUSA-N Sorbitan monooleate Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OC[C@@H](O)[C@H]1OC[C@H](O)[C@H]1O NWGKJDSIEKMTRX-AAZCQSIUSA-N 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- OGBUMNBNEWYMNJ-UHFFFAOYSA-N batilol Chemical class CCCCCCCCCCCCCCCCCCOCC(O)CO OGBUMNBNEWYMNJ-UHFFFAOYSA-N 0.000 description 1
- 239000007853 buffer solution Substances 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000010413 gardening Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- ZIUHHBKFKCYYJD-UHFFFAOYSA-N n,n'-methylenebisacrylamide Chemical compound C=CC(=O)NCNC(=O)C=C ZIUHHBKFKCYYJD-UHFFFAOYSA-N 0.000 description 1
- 239000002504 physiological saline solution Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000012286 potassium permanganate Substances 0.000 description 1
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 description 1
- 235000019394 potassium persulphate Nutrition 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000012966 redox initiator Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 1
- PODWXQQNRWNDGD-UHFFFAOYSA-L sodium thiosulfate pentahydrate Chemical compound O.O.O.O.O.[Na+].[Na+].[O-]S([S-])(=O)=O PODWXQQNRWNDGD-UHFFFAOYSA-L 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010557 suspension polymerization reaction Methods 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 238000010189 synthetic method Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Abstract
The invention relates to a preparation method of a water-absorbing resin, particularly a method for preparing a water-absorbing resin by an ultraviolet and gamma-ray radiation ionization technique. The method comprises the following steps: 1) neutralizing acrylic acid monomer with an alkali solution to a neutralization degree of 60-90%, adding functional monomer which accounts for 0.2-40 wt% of the acrylic acid monomer to prepare a neutralized solution of which the mass percentage of the total monomers is 30-60%, and adding into a transparent reaction vessel; 2) irradiating the neutralized solution in the transparent neutralized solution under an ultraviolet light source so that the neutralized solution is subjected to polymerization reaction to generate an elastogel; 3) putting the elastogel obtained in the step 2) in a gamma-ray nuclear radiation device of which the radiation dose rate is 0.3-10 kGy/h, and carrying out dynamic irradiation with a delivery system until the irradiation dose reaches 3-20 kGy; and 4) after carrying out crushing, drying, pulverization and screening on the elastogel obtained in the step 3), carrying out dispersity and permeability surface treatment with a surface treating agent to obtain the water-absorbing resin.
Description
Technical field
The present invention relates to a kind of preparation method of water-absorbing resin, especially the aqueous solution that relates to a kind of vinylformic acid, acrylate, functional comonomer, under ultraviolet source chemical effect and the effect of gamma-rays nuclear radiation ionization chemical effect, by the method for solution polymerization water-absorbing resin.
Background technology
High hydrophilous resin is meant that water absorbent rate is the functional high-polymer synthetic materials of tens times of sole masses and even thousands of times, just because of its good suction and gel expansion character, be widely used in the conditioning of agricultural and gardening planting soil water conservation and moisture-holding and soil, medical and living-hygienic product (as sanitary towel, paper diaper, hygiene care mattress etc.), flood fighting water blockoff, various fields such as building is preserved moisture and water stop sealing material, cable block water, food fresh keeping, daily-use chemical industry, fire-fighting fire extinguishing, and along with science and technology development, its range of application will be more and more widely.
At present, the synthetic of High hydrophilous resin adopt the thermopolymerization method that adds initiator and linking agent more, and the High hydrophilous resin polymerization is to change into the solid-state chemical reaction process of gel from liquid state, because later stage Stirring heat transfer difficulty, so product performance are difficult to stablize.Though the existing report that independent ultraviolet polymerization and independent gamma-rays radio polymerization technology are arranged, but also all need to add initiator and linking agent, and lack replenishing of later stage process for treating surface, the logical fluidity and the bad dispersibility of product are difficult to satisfy in the practical application demand to the comprehensive Practical Performance of product.
Chinese patent CN1786040 discloses a kind of preparation method of spherical water absorption resin, at normal temperatures and pressures, by
60Co-gamma-rays radiation inverse suspension polymerization forms.It is characterized in that using water: vinylformic acid, alkali lye, comonomer, linking agent and oil phase: span 80, mono-glycerides, dispersion agent are mixed with anti-phase suspension liquid, then anti-phase suspension liquid splendid attire in container, the anti-phase suspension liquid phase is to the container transfixion, place irradiation field to accept irradiation, do not need reactor, at dosage is 0.05～2kGy/h, and dosage is 0.5～0.2 * 10
2Under the condition of kGy, reaction finishes and isolates oil phase, promptly gets spherical water absorption resin after the drying, and this spherical water absorption resin outward appearance is spherical in shape, and particle diameter is even, and is non-friable, the suction good penetrability.
Chinese patent CN1554692 discloses a kind of preparation method of High hydrophilous resin, microwave radiation cellulose base High hydrophilous resin synthetic method.It is wetting that Mierocrystalline cellulose adds deionized water, gelatinization under the microwave radiation, and the redox initiation system that adds Potassium Persulphate or potassium permanganate and Sulfothiorine or S-WAT stirs evenly, and causes 4～7min then under microwave radiation; Add N successively as linking agent, N～methylene-bisacrylamide, epoxy chloropropane or polyoxyethylene glycol double methacrylate, acrylamide or sodium allylsulfonate, acrylic or methacrylic acid, regulating degree of neutralization is 65%～75%, stirs evenly the back and react 7～10min under microwave radiation; Place methyl alcohol to soak 3～5h the white product that generates, oven dry, pulverizing are promptly.
Summary of the invention
The object of the present invention is to provide a kind of UV-light and gamma-rays radiation ionization technology to prepare the method for water-absorbing resin.
The present invention includes following steps:
1) Acrylic Acid Monomer is neutralized to 60%～90% degree of neutralization with alkaline solution after, add the functional monomer account for Acrylic Acid Monomer quality 0.2%～40%, be mixed with the total monomer quality percentage concentration and be 30%～60% neutralization solution and in its transparent reaction container of packing into;
2) will pack into the neutralization solution of transparent reaction container places irradiation under the ultraviolet source, and the neutralization solution polymerization reaction take place generates elastogel;
3) with step 2) to place radiation dose rate be the gamma-rays nuclear radiation device of 0.3～10kGy/h for the elastogel that obtains, utilizes the delivery system dynamic radioaction, makes irradiation dose reach 3～20kGy;
4) with after carrying out dispersiveness, perviousness surface treatment with surface treatment agent again after the elastogel fragmentation of step 3) gained, drying, pulverizing, the screening, promptly get water-absorbing resin.
In step 1), described alkaline solution can be selected from the aqueous solution of sodium hydroxide or potassium hydroxide; Described functional monomer can be selected from least a in acrylamide, Methacrylamide, methacrylic acid, fumaric acid, methylene-succinic acid, toxilic acid, maleic anhydride, Hydroxyethyl acrylate, Propylene glycol monoacrylate, acrylate, the 2-acrylamide-2-methyl propane sulfonic acid etc.; Described neutral Controllable Temperature is built in 10～35 ℃.
In step 2) in, the described neutralization solution that will pack the transparent reaction container into places the condition of irradiation under the ultraviolet source can be: it is 200～400nm that the neutralization solution of the transparent reaction container of will packing into places wavelength, and illumination is 200～20000 μ w/cm
2Ultraviolet source under, the irradiation 60～300min.
In step 3), described gamma-rays nuclear radiation device can adopt the co-60 radiation source apparatus, or other can produce the radiation source assembly of gamma-ray radionuclide.
In step 4), the requirement of described pulverizing can be and is crushed to 30～120 orders; Described dispersiveness, perviousness surface-treated condition can be: surface treatment agent can adopt at least a in polyoxyethylene glycol double methacrylate, epoxy chloropropane, N hydroxymethyl acrylamide, methyl alcohol, ethanol, ethylene glycol, butyleneglycol, glycerol, aluminum chloride, water glass, talcum powder, the zeolite powder etc.
Prepared water-absorbing resin is white in color Powdered, and it absorbs the multiplying power height, and absorption rate is fast, good fluidity, and anti-salt receptivity is strong, and logical fluidity can be good.
The present invention utilizes UV-light chemistry effect to carry out High hydrophilous resin synthetic polyreaction, utilize gamma-rays radiation ionization chemical effect to carry out High hydrophilous resin synthetic crosslinking reaction, do not add initiator and linking agent, do not need Stirring heat transfer, the processing performance of chemical reaction is stable, later stage is carried out surface modification treatment with process for treating surface to product, the multiplying power that is absorbed height, absorption rate is fast, good fluidity, anti-salt receptivity is strong, the white powder super absorbent resin fat prod that logical fluidity can be good.
Embodiment
Following examples will the present invention is further illustrated.
Embodiment 1
With vinylformic acid 30kg put into stir and refrigerating unit with still, coolant temperature is controlled at 5～15 ℃, under whipped state, drip the aqueous sodium hydroxide solution of 23% weight percent concentration, neutral temperature is controlled at 25～35 ℃, be neutralized to pH value 7, the Methacrylamide that adds 1kg again, be stirred well to dissolving fully, pack into then in the PE plastics bag, being placed on wavelength earlier is 365nm, illumination is under the ultraviolet source of 4000 μ w/cm2, irradiation 60min, and the feed liquid polymerization reaction take place becomes elastogel, it is the gamma-rays nuclear radiation device irradiation of 7kGy/h that elastogel behind the uv photopolymerization is placed radiation dose rate again, makes irradiation dose reach 10kGy.Elastogel carries out surface treatment with surface treatment agent again after broken, dry, pulverizing, screening then, the multiplying power that is absorbed height, and absorption rate is fast, good fluidity, anti-salt receptivity is strong, the white powder super absorbent resin fat prod that logical fluidity can be good.
The product of gained detects by following detection method:
1. inhaling the deionized water multiple measures
Take by weighing 1g sample (being accurate to 0.01g).Place the 2000mL beaker, add the 1500mL deionized water, place 60min, make the abundant water-swelling of sample.Move in the normal test sieve (aperture 0.125mm) of known quality natural filtration 10min then.Testing sieve is tilted to place, again natural filtration 10min.Weighing testing sieve and gel sample total mass.
2. inhaling 0.9%Nacl solution multiple measures
Take by weighing 1g sample (being accurate to 0.01g).Place the 500mL beaker, add the 200mL0.9%Nacl aqueous solution, place 60min, make the abundant water-swelling of sample.Move in the normal test sieve (aperture 0.125mm) of known quality natural filtration 10min then.Testing sieve is tilted to place, again natural filtration 10min.Weighing testing sieve and gel sample total mass.
Expression of results is:
In the formula: v-suction multiple, g/g;
m
1-sample mass, g;
m
2-testing sieve quality, g;
m
3-testing sieve and gel sample total mass, g.
3. determination of moisture (weighting method)
Take by weighing 5g sample (being accurate to 0.01g), place 105～110 ℃ of loft drier, dry 2h, taking-up moves in the moisture eliminator, and 30min is to room temperature in cooling, accurately weighing, the result is expressed as follows:
In the formula: w-moisture (H
2O) content mass percent, %;
m
4-dry preceding sample mass, g;
m
5-dry back sample mass, g.
4.pH measure (pH acidometer method)
Take by weighing 1g sample (being accurate to 0.01g).Place the 2000mL beaker, add the 1500mL deionized water, leave standstill and place 30min, treat the abundant water-swelling of sample after, measure with the pH acidometer.Before the mensuration, acidometer is carried out verification with standard buffer solution.
Performance test results is referring to table 1.
Table 1
| Project | Embodiment 1 | Embodiment 2 |
| Outward appearance | White particle | White particle |
| Inhale deionized water multiple (g/g) | 970 | 700 |
| Inhale physiological saline multiple (g/g) | 80 | 74 |
| Moisture (H 2O) content (%) | 6 | 7 |
| The pH value | 6.8 | 7.1 |
Embodiment 2
With vinylformic acid 30kg put into stir and refrigerating unit with still, coolant temperature is controlled at 5～15 ℃, under whipped state, drip the potassium hydroxide aqueous solution of 20% weight percent concentration, neutral temperature is controlled at 25～35 ℃, be neutralized to pH value 7, the acrylamide and the 1kg2-acrylamide-2-methyl propane sulfonic acid that add 3kg again are stirred well to dissolving fully, in the PE plastics bag of packing into then, being placed on wavelength earlier is 365nm, and illumination is 5000 μ w/cm
2Ultraviolet source under, the irradiation 90min, the feed liquid polymerization reaction take place becomes elastogel, it is the gamma-rays nuclear radiation device irradiation of 8kGy/h that the elastogel behind the uv photopolymerization is placed radiation dose rate again, makes irradiation dose reach 15kGy.Elastogel carries out surface treatment with surface treatment agent again after broken, dry, pulverizing, screening then, the multiplying power that is absorbed height, and absorption rate is fast, good fluidity, anti-salt receptivity is strong, the white powder super absorbent resin fat prod that logical fluidity can be good.Performance test results is referring to table 1.
Claims (8)
1. UV-light and gamma-rays radiation ionization technology prepare the method for water-absorbing resin, it is characterized in that may further comprise the steps:
1) Acrylic Acid Monomer is neutralized to 60%～90% degree of neutralization with alkaline solution after, add the functional monomer account for Acrylic Acid Monomer quality 0.2%～40%, be mixed with the total monomer quality percentage concentration and be 30%～60% neutralization solution and in its transparent reaction container of packing into;
2) will pack into the neutralization solution of transparent reaction container places irradiation under the ultraviolet source, and the neutralization solution polymerization reaction take place generates elastogel;
3) with step 2) to place radiation dose rate be the gamma-rays nuclear radiation device of 0.3～10kGy/h for the elastogel that obtains, utilizes the delivery system dynamic radioaction, makes irradiation dose reach 3～20kGy;
4) with after carrying out dispersiveness, perviousness surface treatment with surface treatment agent again after the elastogel fragmentation of step 3) gained, drying, pulverizing, the screening, promptly get water-absorbing resin.
2. UV-light and gamma-rays radiation ionization technology prepare the method for water-absorbing resin according to claim 1, it is characterized in that in step 1) described alkaline solution is selected from the aqueous solution of sodium hydroxide or potassium hydroxide.
3. UV-light and gamma-rays radiation ionization technology prepare the method for water-absorbing resin according to claim 1, it is characterized in that in step 1) described functional monomer is selected from least a in acrylamide, Methacrylamide, methacrylic acid, fumaric acid, methylene-succinic acid, toxilic acid, maleic anhydride, Hydroxyethyl acrylate, Propylene glycol monoacrylate, acrylate, the 2-acrylamide-2-methyl propane sulfonic acid.
4. UV-light and gamma-rays radiation ionization technology prepare the method for water-absorbing resin according to claim 1, it is characterized in that in step 1) described neutral temperature is controlled at 10～35 ℃.
5. UV-light and gamma-rays radiation ionization technology prepare the method for water-absorbing resin according to claim 1, it is characterized in that in step 2) in, the described neutralization solution that will pack the transparent reaction container into places the condition of irradiation under the ultraviolet source to be: it is 200～400nm that the neutralization solution of the transparent reaction container of will packing into places wavelength, and illumination is 200～20000 μ w/cm
2Ultraviolet source under, the irradiation 60～300min.
6. UV-light and gamma-rays radiation ionization technology prepare the method for water-absorbing resin according to claim 1, it is characterized in that in step 3), described gamma-rays nuclear radiation device adopts the co-60 radiation source apparatus, or other can produce the radiation source assembly of gamma-ray radionuclide.
7. UV-light and gamma-rays radiation ionization technology prepare the method for water-absorbing resin according to claim 1, it is characterized in that in step 4) the requirement of described pulverizing is for being crushed to 30～120 orders.
8. UV-light and gamma-rays radiation ionization technology prepare the method for water-absorbing resin according to claim 1, it is characterized in that in step 4) described dispersiveness, perviousness surface-treated condition are: surface treatment agent adopts at least a in polyoxyethylene glycol double methacrylate, epoxy chloropropane, N hydroxymethyl acrylamide, methyl alcohol, ethanol, ethylene glycol, butyleneglycol, glycerol, aluminum chloride, water glass, talcum powder, the zeolite powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310182577.4A CN103224630B (en) | 2013-05-16 | 2013-05-16 | Method for preparing water-absorbing resin by ultraviolet and gamma-ray radiation ionization technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310182577.4A CN103224630B (en) | 2013-05-16 | 2013-05-16 | Method for preparing water-absorbing resin by ultraviolet and gamma-ray radiation ionization technique |
Publications (2)
| Publication Number | Publication Date |
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| CN103224630A true CN103224630A (en) | 2013-07-31 |
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Cited By (5)
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| CN105561370A (en) * | 2015-04-28 | 2016-05-11 | 安徽省科晟生物科技有限公司 | Novel hemostatic material and preparation method thereof |
| CN108795389A (en) * | 2018-07-30 | 2018-11-13 | 合肥铭佑高温技术有限公司 | A kind of compound cold-storage material of slow-release |
| CN108815140A (en) * | 2018-07-30 | 2018-11-16 | 合肥仙之峰农业科技有限公司 | A kind of retreat stickers of long-acting slow cooling |
| CN110662774A (en) * | 2017-03-31 | 2020-01-07 | 大阪有机化学工业株式会社 | (meth) acrylic resin and method for adjusting strain thereof |
| CN113350047A (en) * | 2021-06-03 | 2021-09-07 | 嫒赟（上海）生物科技股份有限公司 | Anion sanitary towel |
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| CN101111526A (en) * | 2005-01-28 | 2008-01-23 | 施托克豪森有限责任公司 | Water-soluble or water-swellable polymers, particularly water-soluble or water-swellable copolymers made of acrylamide and at least one ionic comonomer having a low residual monomer concentration |
| CN102336861A (en) * | 2011-07-01 | 2012-02-01 | 东莞市赛璞实业有限公司 | Polyacrylate super absorbent resin and preparation method thereof |
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| CN101111526A (en) * | 2005-01-28 | 2008-01-23 | 施托克豪森有限责任公司 | Water-soluble or water-swellable polymers, particularly water-soluble or water-swellable copolymers made of acrylamide and at least one ionic comonomer having a low residual monomer concentration |
| CN102336861A (en) * | 2011-07-01 | 2012-02-01 | 东莞市赛璞实业有限公司 | Polyacrylate super absorbent resin and preparation method thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105561370A (en) * | 2015-04-28 | 2016-05-11 | 安徽省科晟生物科技有限公司 | Novel hemostatic material and preparation method thereof |
| CN105561370B (en) * | 2015-04-28 | 2019-02-15 | 安徽省科晟生物科技有限公司 | A kind of hemostatic material and preparation method thereof |
| CN110662774A (en) * | 2017-03-31 | 2020-01-07 | 大阪有机化学工业株式会社 | (meth) acrylic resin and method for adjusting strain thereof |
| CN108795389A (en) * | 2018-07-30 | 2018-11-13 | 合肥铭佑高温技术有限公司 | A kind of compound cold-storage material of slow-release |
| CN108815140A (en) * | 2018-07-30 | 2018-11-16 | 合肥仙之峰农业科技有限公司 | A kind of retreat stickers of long-acting slow cooling |
| CN113350047A (en) * | 2021-06-03 | 2021-09-07 | 嫒赟（上海）生物科技股份有限公司 | Anion sanitary towel |
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| CN103224630B (en) | 2015-05-27 |
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