CN105777974A - Preparation method of temperature-sensitive magnetic high-hygroscopicity resin for fine mineral dewatering - Google Patents
Preparation method of temperature-sensitive magnetic high-hygroscopicity resin for fine mineral dewatering Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/04—Acids; Metal salts or ammonium salts thereof
- C08F220/06—Acrylic acid; Methacrylic acid; Metal salts or ammonium salts thereof
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/24—Crosslinking, e.g. vulcanising, of macromolecules
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2333/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
- C08J2333/02—Homopolymers or copolymers of acids; Metal or ammonium salts thereof
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2265—Oxides; Hydroxides of metals of iron
- C08K2003/2275—Ferroso-ferric oxide (Fe3O4)
Abstract
The invention discloses a preparation method of temperature-sensitive magnetic high-hygroscopicity resin for fine mineral dewatering and belongs to the technical field of functional materials and solid-liquid separation. The preparation method of a composite material includes: using raw materials FeSO4-7H2O and Fe(NO3)3-9H2O to form a colloidal solution; adding sodium acrylate, acrylic acid, temperature-sensitive monomer, a cross-linking agent and an initiator. The temperature-sensitive magnetic high-hygroscopicity resin synthesized has lowest critical solution temperature (LCST), and water in the resin after absorbing water is discharged for regeneration in a non-phase-change manner. By using the preparation method, the high-hygroscopicity resin with stable temperature-sensitive magnetism and a composite structure can be prepared quickly and can be used for dewatering fine mineral materials.
Description
Technical field
The invention belongs to functional material and solid-liquid separation technique field, relate to the preparation method of a kind of temperature sensitive magnetic high hydroscopic resin for fine mineral dehydration, the method can quickly prepare the high hydroscopic resin with the composite construction stablizing temperature sensitive magnetic.
Background technology
Temperature sensitive magnetic high hydroscopic resin is a kind of to have the functional high molecule material that high-hydroscopicity, Thermo-sensitive and three kinds of characteristics of magnetic are integrated concurrently.Chinese patent CN103172958A discloses a kind of Thermo-sensitive epoxy resin composite material and preparation method thereof, and it is mainly used in the field such as smart coatings and functional plastics.Chinese patent CN104072693A discloses the preparation method of a kind of temperature sensing polymer grafting carbon ball compound, and main purpose is the range of application expanding material with carbon element carbon ball.Additionally Chinese patent CN103657546A discloses a kind of method preparing core-shell structure magnetic compound resin microballoon, first magnetic ferroferric oxide nano-particles is prepared, then under the conditions of microwave hydrothermal, with ferriferrous oxide nano-particle as seed, phenol and formaldehyde are coated to the surface of ferroso-ferric oxide by in-situ polymerization.Above patent adds solid magnetic material grains during synthesizing magnetic macromolecular material and is difficult to avoid the shortcomings such as magnetic homogeneity is poor, magnetic content is low, magnetic is more weak, and the resin being provided simultaneously with high-hydroscopicity, Thermo-sensitive and three kinds of good characteristics of magnetic is particularly difficult.
Fine mineral dehydration at present is a big technical barrier of mineral processing and utilization industry, use super absorbent resin fine mineral is dehydrated be a kind of brand-new by means of absorbent material to remove the method for moisture in fine mineral, but moisture in super absorbent resin removing fine mineral, its dehydration is easily controlled, and after absorbing water, recovery and the regeneration of resin are highly difficult.Therefore synthesize temperature sensitive magnetic high hydroscopic resin and be applied to fine mineral dehydration, by magnetic separation separation resin, recycling with non-phase transformation dehydration regeneration by Thermo-sensitive afterwards, thus saved big energy, also it is the breakthrough solving a fine mineral dehydration technique difficult problem, is theoretical extension and the technology application realizing fine mineral dehydration.
Summary of the invention
During for water-absorbing resin difference prepared by existing method, there is temperature sensitive, magnetic and high-hydroscopicity is integrated, and there is the technical problem that magnetic homogeneity is poor, magnetic content unstable, magnetic is more weak, it is desirable to provide the preparation method of a kind of temperature sensitive magnetic high hydroscopic resin overcoming the problems referred to above.Temperature sensitive magnetic water-absorbing resin is utilized to have water imbibition, temperature sensitive and magnetic concurrently, use it for removing fine mineral moisture, after resin and fine mineral mixed dehydration, by magnetic separation method, temperature sensitive magnetic water-absorbing resin is separated from fine mineral, can be recycled after being dehydrated with non-phase transformation by temperature change.The present invention is achieved through the following technical solutions: a kind of fine mineral is dehydrated the preparation method of temperature sensitive magnetic high hydroscopic resin, comprises the steps:
(1) with raw material FeSO4∙7H2O and Fe (NO3)3∙9H2O is respectively configured the solution that concentration is 0.5-1.2mol/L; it is added dropwise in same container with the ammonia spirit that concentration is 1.0-2.5mol/L simultaneously; three's molar ratio is 1:1:1.5-1:3:3, and heating water bath 40-90 DEG C, stirred under nitrogen atmosphere forms colloidal solution in 1-2 hour；
Under nitrogen protection, organic media and water are mixed with volume ratio 10:1-10:6, is subsequently adding above-mentioned colloidal solution and is uniformly mixed, FeSO in mixed solution4∙7H2O and Fe (NO3)3∙9H2The quality sum of O and the mass ratio of organic media are 3:100-7:30, add PAA, acrylic acid, crosslinking agent, initiator stirring the most under agitation, react 0.5-1.0 hour heating water bath 10-90 DEG C；Described PAA is 1:3-1:10 with the mass ratio of organic media；Described PAA and acrylic acid mass ratio are 1:0.1-1:0.5；Crosslinking agent described in this step is 0.01:1-0.03:1 with the mass ratio of PAA；Initiator described in this step is 0.03:1-0.07:1 with the mass ratio of PAA；
(2) forming temperature sensitive monomer solution after temperature sensitive monomer being dissolved, its medium that dissolves used is water, ethanol or water and alcohol mixed solvent, is then added by temperature sensitive monomer solution in the reaction system of step (1)；Dissolving medium and use water and during alcohol mixed solvent, wherein volume ratio both water and ethanol is 1:1-1:4；Described temperature sensitive monomer with dissolve mass of medium ratio for 0.1:1-0.5:1；Described temperature sensitive monomer is 0.5:1-1.5:1 with the mass ratio of PAA；
Add crosslinking agent, initiator, stirring, and react 1-6 hour heating water bath 10-50 DEG C；Crosslinking agent described in this step is 0.02:1-0.06:1 with the mass ratio of PAA；Initiator described in this step is 0.06:1-0.15:1 with the mass ratio of PAA；
(3) finally being separated under the suction of magnet by step (2) products obtained therefrom, products therefrom is vacuum dried and i.e. obtains product afterwards.
Further, the raw material FeSO described in step (1)4∙7H2O and Fe (NO3)3∙9H2O gross mass is 0.3:1-0.7:1 with the mass ratio of PAA.
Further, the organic media described in step (1) is any one or the mixture of any two kinds in hexamethylene, normal heptane, ethylbenzene, dimethylbenzene；When using two kinds of organic medias, the volume ratio of the two is 1:1-1:5；This statement refers to, optional two kinds of independent assortments in hexamethylene, normal heptane, ethylbenzene, dimethylbenzene, and all can use this volume ratio.
Further, temperature sensitive monomer described in step (2) is NIPA, methylcellulose, hydroxy propyl cellulose, polyvinyl alcohol, vinyl acetate, N, any one or the mixture of any two kinds of monomers in N-acrylamide, expoxy propane, oxirane, styrene, when using two kinds of materials, the two mass ratio is 3:1-5:1；This statement refers to: when being elected to above-mentioned any two kinds of material independent assortments, all can use this mass ratio.
Further, the crosslinking agent described in step (1) is divinylbenzene, diisocyanate, N, any one in N-methylene-bisacrylamide.
Further, any one during the initiator described in step (1) is azo-bis-iso-dimethyl, azo diisopropyl imidazoline hydrochloric acid potassium, ammonium persulfate, benzoyl peroxide.
Further, the crosslinking agent described in step (2) is any one in hydroxy-ethyl acrylate, hydroxypropyl acrylate, methacrylic acid, hydroxyethyl methacrylate, hydroxy propyl methacrylate, divinylbenzene, N hydroxymethyl acrylamide, DAAM.
Further, any one during the initiator described in step (2) is azo-bis-iso-dimethyl, azo diisopropyl imidazoline hydrochloric acid potassium, ammonium persulfate.
Fine mineral described in step (3) is dehydrated the lowest critical solution temperature of temperature sensitive magnetic high hydroscopic resin and is 30-50 DEG C.
Beneficial effects of the present invention: the present invention is with FeSO4∙7H2O and Fe (NO3)3∙9H2O is Material synthesis colloidal solution, and then add resin monomer, temperature sensitive raw material, crosslinking agent and initiator, magnetic ferroferric oxide is formed the most firm parcel, the problem that magnetic homogeneity is poor, magnetic content is low, magnetic is more weak that existing preparation magnetic water-absorbing resin exists can be overcome；Make resin have high-hydroscopicity, Thermo-sensitive and magnetic simultaneously, utilize its characteristic, both can complete the resin high-efficiency dehydration to fine mineral, the recycling of resin can be realized again with comparalive ease.
Accompanying drawing explanation
Fig. 1 is the Magnetic Test result schematic diagram of specific embodiment of the invention gained sample.
Fig. 2 is the SEM photograph of specific embodiment of the invention gained sample.
Fig. 3 is the Thermo-sensitive measurement result schematic diagram of specific embodiment of the invention gained sample.
Detailed description of the invention
A kind of fine mineral is dehydrated the preparation method of temperature sensitive magnetic high hydroscopic resin, comprises the steps:
(1) with raw material FeSO4∙7H2O and Fe (NO3)3∙9H2It is that 0.5-1.2mol/L(can use 0.5 mol/L that O is respectively configured concentration, 0.7 mol/L, 1.2 mol/L, 1.0 mol/L) solution, it is that 1.0-2.5mol/L(can use 1.0 mol/L with concentration, 1.5 mol/L, 2.0 mol/L, ammonia spirit 2.5mol/L) is added dropwise in same container simultaneously, three's molar ratio is that 1:1:1.5-1:3:3(may select 1:1:1.5, 1:1.5:2.5, 1:3:3), heating water bath 40-90 DEG C (optional 70 DEG C, 40 DEG C, 50 DEG C, 60 DEG C, 80 DEG C, 90 DEG C), stirred under nitrogen atmosphere forms colloidal solution in 1-2 hour；
Under nitrogen protection, organic media and water be may select 10:2,10:1,10:3,10:6,10:5,10:4 with volume ratio 10:1-10:6() mixing, it is subsequently adding above-mentioned colloidal solution and is uniformly mixed, FeSO in mixed solution4∙7H2O and Fe (NO3)3∙9H2The quality sum of O and the mass ratio of organic media are that 3:100-7:30(may select 3:100,5:50,7:30), add PAA, acrylic acid, crosslinking agent, initiator stirring the most under agitation, heating water bath 10-90 DEG C (optional 30 DEG C, 50 DEG C, 90 DEG C, 70 DEG C, 10 DEG C) reaction 0.5-1.0 hour；Described PAA is that 1:3-1:10(may select 1:9,1:10,1:3,1:5,1:7 with the mass ratio of organic media)；Described PAA and acrylic acid mass ratio are that 1:0.1-1:0.5(may select 1:0.3,1:0.1,1:0.5)；Crosslinking agent described in this step is that 0.01:1-0.03:1(may select 0.01:1,0.02:1,0.03:1 with the mass ratio of PAA)；Initiator described in this step is that 0.03:1-0.07:1(may select 0.03:1,0.05:1,0.07:1 with the mass ratio of PAA)；
(2) forming temperature sensitive monomer solution after temperature sensitive monomer being dissolved, its medium that dissolves used is water, ethanol or water and alcohol mixed solvent, is then added by temperature sensitive monomer solution in the reaction system of step (1)；Dissolving medium and use water and during alcohol mixed solvent, wherein volume ratio both water and ethanol is that 1:1-1:4(may select 1:1,1:3,1:2,1:4)；Described temperature sensitive monomer with dissolve mass of medium ratio for 0.1:1-0.5:1(0.1:1,0.5:1,0.4:1,0.3:1,0.2:1)；Described temperature sensitive monomer is that 0.5:1-1.5:1(may select 1.5:1,0.5:1,0.7:1,0.9:1,1.1:1,1.3:1 with the mass ratio of PAA)；
Add crosslinking agent, initiator, stirring, and in heating water bath 10-50 DEG C (optional 30 DEG C, 20 DEG C, 40 DEG C, 50 DEG C, 10 DEG C) reaction 1-6 hour (optional 2,3,5,4,6 hours)；Crosslinking agent described in this step is that 0.02:1-0.06:1(may select 0.03:1,0.06:1,0.04:1,0.05:1,0.02:1 with the mass ratio of PAA)；Initiator described in this step is that 0.06:1-0.15:1(may select 0.09:1,0.06:1,0.12:1,0.15:1 with the mass ratio of PAA)；
(3) finally being separated under the suction of magnet by step (2) products obtained therefrom, products therefrom is vacuum dried and i.e. obtains product afterwards.
Raw material FeSO described in step (1)4∙7H2O and Fe (NO3)3∙9H2O gross mass is that 0.3:1-0.7:1(may select 0.3:1,0.5:1,0.7:1 with the mass ratio of PAA).
Organic media described in step (1) is any one or the mixture of any two kinds in hexamethylene, normal heptane, ethylbenzene, dimethylbenzene；When using two kinds of organic medias, the volume ratio of the two is that 1:1-1:5(may select 1:1,1:1.2,1:1.5,1:1.3,1:1.4).
Temperature sensitive monomer described in step (2) is NIPA, methylcellulose, hydroxy propyl cellulose, polyvinyl alcohol, vinyl acetate, N, any one or the mixture of any two kinds of monomers in N-acrylamide, expoxy propane, oxirane, styrene, when using two kinds of materials, the two mass ratio is that 3:1-5:1(may select 3:1,4:1,5:1).
Crosslinking agent described in step (1) is any one in divinylbenzene, diisocyanate, N,N methylene bis acrylamide.
Initiator described in step (1) is any one in azo-bis-iso-dimethyl, azo diisopropyl imidazoline hydrochloric acid potassium, ammonium persulfate, benzoyl peroxide.
Crosslinking agent described in step (2) is any one in hydroxy-ethyl acrylate, hydroxypropyl acrylate, methacrylic acid, hydroxyethyl methacrylate, hydroxy propyl methacrylate, divinylbenzene, N hydroxymethyl acrylamide, DAAM.
Initiator described in step (2) is any one in azo-bis-iso-dimethyl, azo diisopropyl imidazoline hydrochloric acid potassium, ammonium persulfate.
Further illustrate the present invention below by embodiment, but be not limited to following example.
Embodiment 1It is respectively configured the FeSO of molar concentration 0.5mol/L and 1.0mol/L4∙7H2O and Fe (NO3)3∙9H2O solution 10ml, is simultaneously added dropwise with 2.0mol/L ammonia spirit 15ml, and heating water bath 60 DEG C, stirred under nitrogen atmosphere forms colloidal solution in 1 hour.
Under nitrogen protection; 50ml hexamethylene, 25ml ethylbenzene and 20ml water are simultaneously introduced above-mentioned sol solution and are uniformly mixed; the most once add 8g PAA, 2g acrylic acid, 0.08g crosslinking agent N; N-methylene-bisacrylamide, 0.24g initiator ammonium persulfate, react 0.5 hour heating water bath 50 DEG C.
4g NIPA is dissolved in 20ml water, is subsequently added into above-mentioned reaction system, be eventually adding 0.2g crosslinking agent hydroxy-ethyl acrylate and 0.5g initiator azo-bis-iso-dimethyl, stirring, then react 2 hours heating water bath 40 DEG C.Products therefrom is vacuum dried, and ferroso-ferric oxide content is 33% after measured, its saturation magnetization 123emu/g(such as Fig. 1 a), under room temperature, water absorption rate (SR) is up to 972g/g, and lowest critical solution temperature (LCST) is 32 DEG C (such as Fig. 3 a).
Embodiment 2It is respectively configured the FeSO of molar concentration 1.0mol/L and 1.0mol/L4∙7H2O and Fe (NO3)3∙9H2O solution 10ml, is simultaneously added dropwise with 2.5mol/L ammonia spirit 20ml, and heating water bath 80 DEG C, stirred under nitrogen atmosphere forms colloidal solution in 2 hours.
Under nitrogen protection; 100ml hexamethylene and 10ml water are simultaneously introduced above-mentioned sol solution and are uniformly mixed; the most once add 20g PAA, 8g acrylic acid, 0.4g crosslinking agent diisocyanate, 0.8g initiator azo diisopropyl imidazoline hydrochloric acid potassium, react 1.0 hours heating water bath 30 DEG C.
14g NIPA and 6g oxirane are dissolved in 180ml water, are subsequently added into above-mentioned reaction system, be eventually adding 1.0g crosslinking agent methacrylic acid and 1.5g initiator ammonium persulfate, stirring, then react 4 hours heating water bath 50 DEG C.Products therefrom is vacuum dried, and ferroso-ferric oxide content is 27% after measured, its saturation magnetization 75emu/g(such as Fig. 1 b), under room temperature, water absorption rate (SR) is up to 650g/g, and lowest critical solution temperature (LCST) is 42 DEG C (such as Fig. 3 b).
Water absorption rate can be at 500-972 g/g, at 70-123 emu/g. SEM photograph, magnetic can show that the magnetic-particle synthesizing temperature sensitive magnetic water-absorbing resin is evenly distributed.Fig. 2 a is the SEM photograph of embodiment 1 products obtained therefrom, and Fig. 2 b is the SEM photograph of embodiment 2 products obtained therefrom.
Claims (10)
1. the preparation method of the fine mineral temperature sensitive magnetic high hydroscopic resin of dehydration, it is characterised in that comprise the steps:
(1) with raw material FeSO4∙7H2O and Fe (NO3)3∙9H2O is respectively configured the solution that concentration is 0.5-1.2mol/L; it is added dropwise in same container with the ammonia spirit that concentration is 1.0-2.5mol/L simultaneously; three's molar ratio is 1:1:1.5-1:3:3, and heating water bath 40-90 DEG C, stirred under nitrogen atmosphere forms colloidal solution in 1-2 hour；
Under nitrogen protection, organic media and water are mixed with volume ratio 10:1-10:6, is subsequently adding above-mentioned colloidal solution and is uniformly mixed, FeSO in mixed solution4∙7H2O and Fe (NO3)3∙9H2The quality sum of O and the mass ratio of organic media are 3:100-7:30, add PAA, acrylic acid, crosslinking agent, initiator stirring the most under agitation, react 0.5-1.0 hour heating water bath 10-90 DEG C；Described PAA is 1:3-1:10 with the mass ratio of organic media；Described PAA and acrylic acid mass ratio are 1:0.1-1:0.5；Crosslinking agent described in this step is 0.01:1-0.03:1 with the mass ratio of PAA；Initiator described in this step is 0.03:1-0.07:1 with the mass ratio of PAA；
(2) forming temperature sensitive monomer solution after temperature sensitive monomer being dissolved, its medium that dissolves used is water, ethanol or water and alcohol mixed solvent, is then added by temperature sensitive monomer solution in the reaction system of step (1)；Dissolving medium and use water and during alcohol mixed solvent, wherein volume ratio both water and ethanol is 1:1-1:4；Described temperature sensitive monomer with dissolve mass of medium ratio for 0.1:1-0.5:1；Described temperature sensitive monomer is 0.5:1-1.5:1 with the mass ratio of PAA；
Add crosslinking agent, initiator, stirring, and react 1-6 hour heating water bath 10-50 DEG C；Crosslinking agent described in this step is 0.02:1-0.06:1 with the mass ratio of PAA；Initiator described in this step is 0.06:1-0.15:1 with the mass ratio of PAA；
(3) finally being separated under the suction of magnet by step (2) products obtained therefrom, products therefrom is vacuum dried and i.e. obtains product afterwards.
A kind of fine mineral the most according to claim 1 is dehydrated the preparation method of temperature sensitive magnetic high hydroscopic resin, it is characterised in that: the raw material FeSO described in step (1)4∙7H2O and Fe (NO3)3∙9H2O gross mass is 0.3:1-0.7:1 with the mass ratio of PAA.
A kind of fine mineral the most according to claim 1 and 2 is dehydrated the preparation method of temperature sensitive magnetic high hydroscopic resin, it is characterised in that: the organic media described in step (1) is any one or the mixture of any two kinds in hexamethylene, normal heptane, ethylbenzene, dimethylbenzene；When using two kinds of organic medias, the volume ratio of the two is 1:1-1:5.
A kind of fine mineral the most according to claim 1 and 2 is dehydrated the preparation method of temperature sensitive magnetic high hydroscopic resin, it is characterized in that: the temperature sensitive monomer described in step (2) is NIPA, methylcellulose, hydroxy propyl cellulose, polyvinyl alcohol, vinyl acetate, N, any one or the mixture of any two kinds in N-acrylamide, expoxy propane, oxirane, styrene；When using two kinds of materials, the two mass ratio is 3:1-5:1.
A kind of fine mineral the most according to claim 1 and 2 is dehydrated the preparation method of temperature sensitive magnetic high hydroscopic resin, it is characterized in that: the crosslinking agent described in step (1) is divinylbenzene, diisocyanate, N, any one in N-methylene-bisacrylamide.
A kind of fine mineral the most according to claim 1 and 2 is dehydrated the preparation method of temperature sensitive magnetic high hydroscopic resin, it is characterised in that: the initiator described in step (1) is any one in azo-bis-iso-dimethyl, azo diisopropyl imidazoline hydrochloric acid potassium, ammonium persulfate, benzoyl peroxide.
A kind of fine mineral the most according to claim 1 and 2 is dehydrated the preparation method of temperature sensitive magnetic high hydroscopic resin, it is characterised in that: the crosslinking agent described in step (2) is any one in hydroxy-ethyl acrylate, hydroxypropyl acrylate, methacrylic acid, hydroxyethyl methacrylate, hydroxy propyl methacrylate, divinylbenzene, N hydroxymethyl acrylamide, DAAM.
A kind of fine mineral the most according to claim 3 is dehydrated the preparation method of temperature sensitive magnetic high hydroscopic resin, it is characterised in that: the crosslinking agent described in step (2) is any one in hydroxy-ethyl acrylate, hydroxypropyl acrylate, methacrylic acid, hydroxyethyl methacrylate, hydroxy propyl methacrylate, divinylbenzene, N hydroxymethyl acrylamide, DAAM.
A kind of fine mineral the most according to claim 1 and 2 is dehydrated the preparation method of temperature sensitive magnetic high hydroscopic resin, it is characterised in that: the initiator described in step (2) is any one in azo-bis-iso-dimethyl, azo diisopropyl imidazoline hydrochloric acid potassium, ammonium persulfate.
A kind of fine mineral the most according to claim 3 is dehydrated the preparation method of temperature sensitive magnetic high hydroscopic resin, it is characterised in that: the initiator described in step (2) is any one in azo-bis-iso-dimethyl, azo diisopropyl imidazoline hydrochloric acid potassium, ammonium persulfate.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4707523A (en) * | 1985-10-11 | 1987-11-17 | California Institute Of Technology | Magnetic particles |
| CN103242494A (en) * | 2013-05-27 | 2013-08-14 | 上海交通大学 | Preparation method of composite microgel with temperature, pH and magnetic field sensitivities |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4707523A (en) * | 1985-10-11 | 1987-11-17 | California Institute Of Technology | Magnetic particles |
| CN103242494A (en) * | 2013-05-27 | 2013-08-14 | 上海交通大学 | Preparation method of composite microgel with temperature, pH and magnetic field sensitivities |
Non-Patent Citations (1)
| Title |
|---|
| 宫艺等: "聚( N-异丙基丙烯酰胺-co-丙烯酸) / Fe3O4复合微球的制备及表征", 《高分子材料科学与工程》 * |
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