CN103224630B - 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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- 238000000034 method Methods 0.000 title claims abstract description 30
- 239000011347 resin Substances 0.000 title claims abstract description 29
- 229920005989 resin Polymers 0.000 title claims abstract description 29
- 230000005855 radiation Effects 0.000 title claims abstract description 23
- 230000005251 gamma ray Effects 0.000 title claims abstract description 5
- 238000006386 neutralization reaction Methods 0.000 claims abstract description 16
- 238000006243 chemical reaction Methods 0.000 claims abstract description 15
- 239000000178 monomer Substances 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
- 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
- 238000010298 pulverizing process Methods 0.000 claims abstract description 5
- 238000012216 screening Methods 0.000 claims abstract description 5
- 230000001678 irradiating effect Effects 0.000 claims abstract description 3
- 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
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 6
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 6
- 238000011068 loading method Methods 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 6
- 239000012756 surface treatment agent Substances 0.000 claims description 6
- 239000007864 aqueous solution 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
- 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-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims description 3
- 239000002202 Polyethylene glycol Substances 0.000 claims description 3
- 125000004386 diacrylate group Chemical group 0.000 claims description 3
- 238000010528 free radical solution polymerization reaction Methods 0.000 claims description 3
- FQPSGWSUVKBHSU-UHFFFAOYSA-N methacrylamide Chemical compound CC(=C)C(N)=O FQPSGWSUVKBHSU-UHFFFAOYSA-N 0.000 claims description 3
- 229920001223 polyethylene glycol 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
- 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
- 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
- 238000004381 surface treatment Methods 0.000 abstract description 3
- 239000003513 alkali Substances 0.000 abstract description 2
- 238000001035 drying Methods 0.000 abstract description 2
- 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 17
- 239000007788 liquid Substances 0.000 description 10
- 238000010521 absorption reaction Methods 0.000 description 9
- 238000012360 testing method Methods 0.000 description 8
- 239000000047 product Substances 0.000 description 7
- 238000003756 stirring Methods 0.000 description 6
- 239000012071 phase Substances 0.000 description 5
- 230000002745 absorbent Effects 0.000 description 4
- 239000002250 absorbent Substances 0.000 description 4
- 230000002925 chemical effect Effects 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000008367 deionised water Substances 0.000 description 3
- 229910021641 deionized water Inorganic materials 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
- 238000003786 synthesis reaction Methods 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
- 238000005516 engineering process Methods 0.000 description 2
- 230000007935 neutral effect 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
- 239000008346 aqueous phase Substances 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
- 230000000694 effects Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000010413 gardening Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003020 moisturizing effect 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
- 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
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 238000010557 suspension polymerization reaction Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 238000012719 thermal polymerization Methods 0.000 description 1
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- Processes Of Treating Macromolecular Substances (AREA)
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 of a kind of vinylformic acid, acrylate, functional comonomer is related to, under ultraviolet source chemical effect and the effect of gamma-rays nuclear radiation ionization chemical effect, prepared the method for water-absorbing resin by solution polymerization.
Background technology
High hydrophilous resin refers to that water absorbent rate is the functional high-polymer synthetic materials of sole mass tens times and even thousands of times, the water suction excellent just because of it and gel expansion character, be widely used in agricultural and gardening planting soil water conservation and moisture-holding and soil conditioning, medical and living-hygienic product (as sanitary towel, paper diaper, hygiene care mattress etc.), flood fighting water blockoff, build moisturizing and water stop sealing material, cable blocks water, the various fields such as food fresh keeping, daily-use chemical industry, fire-fighting fire extinguishing, and along with the development of science and technology, its range of application will be more and more extensive.
At present, the synthesis of High hydrophilous resin adopts the thermal polymerization method adding initiator and linking agent more, and High hydrophilous resin polymerization is the chemical reaction process becoming gel solid state from liquid conversion, and due to later stage Stirring heat transfer difficulty, therefore product performance are difficult to stablize.Though the existing report having independent ultraviolet polymerization and independent gamma Rays polymerization technique, but also all need to add initiator and linking agent, and lack supplementing of later stage process for treating surface, the logical fluidity of product and bad dispersibility, be difficult to meet the demand to product comprehensive practical performance in practical application.
Chinese patent CN1786040 discloses a kind of preparation method of spherical water absorption resin, at normal temperatures and pressures, by
60co-gamma Rays inverse suspension polymerization forms.It is characterized in that with aqueous phase: 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, anti-phase suspension liquid respective container transfixion, be placed in irradiation field and accept irradiation, do not need reactor, be 0.05 ~ 2kGy/h at dosage, dosage is 0.5 ~ 0.2 × 10
2under the condition of kGy, react complete and isolate oil phase, namely obtain spherical water absorption resin after drying, this spherical water absorption resin outward appearance is spherical in shape, and uniform particle sizes is non-friable, water suction good penetrability.
Chinese patent CN1554692 discloses a kind of preparation method of High hydrophilous resin, process for microwave radiation synthesizing cellulose base high water absorption resin.Mierocrystalline cellulose adds deionized water and soaks, gelatinization under microwave radiation, and the redox initiation system adding Potassium Persulphate or potassium permanganate and Sulfothiorine or S-WAT stirs evenly, and then under microwave radiation, causes 4 ~ 7min; Add the N as linking agent successively, N ~ methylene-bisacrylamide, epoxy chloropropane or polyethyleneglycol diacrylate, acrylamide or sodium allylsulfonate, acrylic or methacrylic acid, regulate degree of neutralization to be 65% ~ 75%, after stirring evenly, under microwave radiation, react 7 ~ 10min; The white product of generation is placed in methyl alcohol and soaks 3 ~ 5h, dry, pulverize and get final product.
Summary of the invention
A kind of UV-light and gamma Rays ionization technique is the object of the present invention is to provide to prepare the method for water-absorbing resin.
The present invention includes following steps:
1) after Acrylic Acid Monomer alkaline solution being neutralized to the degree of neutralization of 60% ~ 90%, add the functional monomer accounting for Acrylic Acid Monomer quality 0.2% ~ 40%, be mixed with total monomer quality percentage concentration and be the neutralization solution of 30% ~ 60% and loaded in transparent reaction container;
2) irradiate under the neutralization solution loading transparent reaction container being placed in ultraviolet source, neutralization solution polymerization reaction take place generates elastogel;
3) by step 2) elastogel that obtains is placed in the gamma-rays nuclear radiation device that radiation dose rate is 0.3 ~ 10kGy/h, and utilize delivery system dynamic radioaction, make irradiation dose reach 3 ~ 20kGy;
4) by broken for the elastogel of step 3) gained, dry, pulverize, carry out dispersiveness, impervious surface's process with surface treatment agent again after screening after, obtain water-absorbing resin.
In step 1), the aqueous solution of described alkaline solution selected from sodium hydroxide or potassium hydroxide; Described functional monomer can be selected from least one in acrylamide, Methacrylamide, methacrylic acid, fumaric acid, methylene-succinic acid, toxilic acid, maleic anhydride, Hydroxyethyl acrylate, Propylene glycol monoacrylate, acrylate, 2-acrylamide-2-methyl propane sulfonic etc.; The temperature-controllable of described neutralization is built in 10 ~ 35 DEG C.
In step 2) in, the condition of irradiating under the described neutralization solution by loading transparent reaction container is placed in ultraviolet source can be: it is 200 ~ 400nm that the neutralization solution loading transparent reaction container is placed in wavelength, and illumination is 200 ~ 20000 μ w/cm
2ultraviolet source under, irradiate 60 ~ 300min.
In step 3), described gamma-rays nuclear radiation device can adopt 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; The condition of described dispersiveness, impervious surface's process can be: surface treatment agent can adopt at least one in polyethyleneglycol diacrylate, epoxy chloropropane, N hydroxymethyl acrylamide, methyl alcohol, ethanol, ethylene glycol, butyleneglycol, glycerol, aluminum chloride, water glass, talcum powder, zeolite powder etc.
Obtained water-absorbing resin is white powder, and its absorbency is high, and absorption rate is fast, good fluidity, and anti-salt receptivity is strong, logical liquid excellent property.
The present invention utilizes UV-light chemical effect to carry out the polyreaction of High hydrophilous resin synthesis, gamma Rays ionization chemical effect is utilized to carry out the crosslinking reaction of High hydrophilous resin synthesis, do not add initiator and linking agent, do not need Stirring heat transfer, the processing performance of chemical reaction is stablized, later stage carries out surface modification treatment with process for treating surface to product, the multiplying power that is absorbed is high, and absorption rate is fast, good fluidity, anti-salt receptivity is strong, the white powder super absorbent resin fat prod of logical liquid excellent property.
Embodiment
The present invention is further illustrated for following examples.
Embodiment 1
Vinylformic acid 30kg is placed with in stirring and refrigerating unit and in still, coolant temperature controls at 5 ~ 15 DEG C, under whipped state, drip the aqueous sodium hydroxide solution of 23% weight percent concentration, neutral temperature controls at 25 ~ 35 DEG C, be neutralized to pH value 7, add the Methacrylamide of 1kg again, be stirred well to and dissolve completely, then load in PE plastics bag, first being placed on wavelength is 365nm, illumination is under the ultraviolet source of 4000 μ w/cm2, irradiate 60min, feed liquid polymerization reaction take place becomes elastogel, elastogel after uv photopolymerization is placed in again the gamma-rays nuclear radiation device irradiation that radiation dose rate is 7kGy/h, irradiation dose is made to reach 10kGy.Then elastogel carries out surface treatment with surface treatment agent again after broken, dry, pulverizing, screening, and the multiplying power that is absorbed is high, and absorption rate is fast, good fluidity, and anti-salt receptivity is strong, the white powder super absorbent resin fat prod of logical liquid excellent property.
The product of gained is detected by following detection method:
1. suck ionized water multiple to measure
Take 1g sample (being accurate to 0.01g).Be placed in 2000mL beaker, add 1500mL deionized water, place 60min, make the abundant water-swelling of sample.Then move in the normal test sieve (aperture 0.125mm) of known quality, natural filtration 10min.By testing sieve slant setting, then natural filtration 10min.Weigh testing sieve and gel sample total mass.
2. inhale 0.9%Nacl solution multiple to measure
Take 1g sample (being accurate to 0.01g).Be placed in 500mL beaker, add the 200mL0.9%Nacl aqueous solution, place 60min, make the abundant water-swelling of sample.Then move in the normal test sieve (aperture 0.125mm) of known quality, natural filtration 10min.By testing sieve slant setting, then natural filtration 10min.Weigh testing sieve and gel sample total mass.
Expression of results is:
In formula: v-Water absorption, 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 5g sample (being accurate to 0.01g), be placed in 105 ~ 110 DEG C of loft drier, dry 2h, take out and move in moisture eliminator, after cooling 30min to room temperature, precise, result is expressed as follows:
In formula: w-moisture (H
2o) content mass percent, %;
M
4-dry front sample mass, g;
M
5-dry rear sample mass, g.
4.pH measures (pH pH meter)
Take 1g sample (being accurate to 0.01g).Be placed in 2000mL beaker, add 1500mL deionized water, leave standstill and place 30min, after the abundant water-swelling of sample, measure with pH acidometer.Before mensuration, with standard buffer solution, acidometer is verified.
Performance test results is see table 1.
Table 1
| Project | Embodiment 1 | Embodiment 2 |
| Outward appearance | White particle | White particle |
| Suck ionized water multiple (g/g) | 970 | 700 |
| Inhale physiological saline multiple (g/g) | 80 | 74 |
| Moisture (H 2O) content (%) | 6 | 7 |
| PH value | 6.8 | 7.1 |
Embodiment 2
Vinylformic acid 30kg is placed with in stirring and refrigerating unit and in still, coolant temperature controls at 5 ~ 15 DEG C, under whipped state, drip the potassium hydroxide aqueous solution of 20% weight percent concentration, neutral temperature controls at 25 ~ 35 DEG C, be neutralized to pH value 7, add acrylamide and the 1kg2-acrylamide-2-methyl propane sulfonic of 3kg again, be stirred well to and dissolve completely, then load in PE plastics bag, first being placed on wavelength is 365nm, and illumination is 5000 μ w/cm
2ultraviolet source under, irradiate 90min, feed liquid polymerization reaction take place becomes elastogel, the elastogel after uv photopolymerization is placed in the gamma-rays nuclear radiation device irradiation that radiation dose rate is 8kGy/h again, makes irradiation dose reach 15kGy.Then elastogel carries out surface treatment with surface treatment agent again after broken, dry, pulverizing, screening, and the multiplying power that is absorbed is high, and absorption rate is fast, good fluidity, and anti-salt receptivity is strong, the white powder super absorbent resin fat prod of logical liquid excellent property.Performance test results is see table 1.
Claims (5)
1. UV-light and gamma Rays ionization technique prepare the method for water-absorbing resin, it is characterized in that comprising the following steps:
1) after Acrylic Acid Monomer alkaline solution being neutralized to the degree of neutralization of 60% ~ 90%, add the functional monomer accounting for Acrylic Acid Monomer quality 0.2% ~ 40%, be mixed with total monomer quality percentage concentration and be the neutralization solution of 30% ~ 60% and loaded in transparent reaction container; Described functional monomer is selected from least one in acrylamide, Methacrylamide, methacrylic acid, fumaric acid, methylene-succinic acid, toxilic acid, maleic anhydride, Hydroxyethyl acrylate, Propylene glycol monoacrylate, acrylate, 2-acrylamide-2-methyl propane sulfonic;
2) irradiate under the neutralization solution loading transparent reaction container being placed in ultraviolet source, neutralization solution polymerization reaction take place generates elastogel; The condition of irradiating under the described neutralization solution by loading transparent reaction container is placed in ultraviolet source is: it is 200 ~ 400nm that the neutralization solution loading transparent reaction container is placed in wavelength, and illumination is 200 ~ 20000 μ w/cm
2ultraviolet source under, irradiate 60 ~ 300min;
3) by step 2) elastogel that obtains is placed in the gamma-rays nuclear radiation device that radiation dose rate is 0.3 ~ 10kGy/h, and utilize delivery system dynamic radioaction, make irradiation dose reach 3 ~ 20kGy;
4) by step 3) elastogel of gained is broken, dry, pulverize, carry out dispersiveness, impervious surface's process with surface treatment agent again after screening after, obtain water-absorbing resin; The condition of described dispersiveness, impervious surface's process is: surface treatment agent adopts at least one in polyethyleneglycol diacrylate, epoxy chloropropane, N hydroxymethyl acrylamide, methyl alcohol, ethanol, ethylene glycol, butyleneglycol, glycerol, aluminum chloride, water glass, talcum powder, zeolite powder.
2. UV-light and gamma Rays ionization technique prepare the method for water-absorbing resin as claimed in claim 1, it is characterized in that in step 1) in, described alkaline solution is selected from the aqueous solution of sodium hydroxide or potassium hydroxide.
3. UV-light and gamma Rays ionization technique prepare the method for water-absorbing resin as claimed in claim 1, it is characterized in that in step 1) in, the temperature of described neutralization controls at 10 ~ 35 DEG C.
4. UV-light and gamma Rays ionization technique prepare the method for water-absorbing resin as claimed in claim 1, it is characterized in that in step 3) in, described gamma-rays nuclear radiation device adopts co-60 radiation source apparatus, or other can produce the radiation source assembly of gamma-ray radionuclide.
5. UV-light and gamma Rays ionization technique prepare the method for water-absorbing resin as claimed in claim 1, it is characterized in that in step 4) in, the requirement of described pulverizing is for being crushed to 30 ~ 120 orders.
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| 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 |
| 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 |
| 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 |
| CN113350047B (en) * | 2021-06-03 | 2022-09-09 | 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 |
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