CN104592443A - Color super absorbent resin for soilless culture and preparation method thereof - Google Patents
Color super absorbent resin for soilless culture and preparation method thereof Download PDFInfo
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- CN104592443A CN104592443A CN201510064423.4A CN201510064423A CN104592443A CN 104592443 A CN104592443 A CN 104592443A CN 201510064423 A CN201510064423 A CN 201510064423A CN 104592443 A CN104592443 A CN 104592443A
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Abstract
The invention discloses a color super absorbent resin for soilless culture, which is prepared from acrylamide, a dye monomer and a crosslinking agent by polymerizing in a mass ratio of 1: (0. 01-0.1): (0.00001-0.001), wherein the dye monomer is a water-soluble double-bond azo dye. The color super absorbent resin for soilless culture is prepared through the following steps: adding acrylamide in water so as to obtain an acrylamide aqueous solution; adding a dye monomer in the acrylamide aqueous solution and uniformly stirring under ultrasonic radiation condition; adding a crosslinking agent and an initiator into the obtained mixture to carry out polymerization reaction under ultrasonic radiation condition, thus obtaining a water-containing crude product; and carrying out post-treatment on the water-containing crude product, thus obtaining a final product. According to the invention, the double-bond dye monomer and acrylamide and the like are subjected to copolymerization through a chemical reaction, so that the dye monomer is coupled in a chemical structure of the super absorbent resin through covalent bonds, thereby solving the problem that an existing color super absorbent resin is decolored when in use; and the color super absorbent resin for soilless culture disclosed by the invention is good in binding strength, and is free from color losing, color fading, non-uniform color, and the like after encountering water when in use.
Description
Technical field
The invention belongs to high absorbency material technical field, be specifically related to the colored super absorbent resin of a kind of soilless culture, the invention still further relates to the preparation method of this colored super absorbent resin.
Background technology
High hydrophilous resin is a kind of novel functional high molecule material, because having very strong water-absorbent and excellent water-retentivity and having broad application prospects in agricultural gardening, desert control etc.The High hydrophilous resin mainly acrylate polymer at research initial stage, product be white or close to colourless.Along with the continuous expansion of High hydrophilous resin Application Areas, the super absorbent resin with different colours becomes the focus of research and development, motley High hydrophilous resin except there is practical value, also for it adds ornamental value.The current main application of colored super absorbent resin has: the matrix of kind of a careless crystal mud of growing flower, soilless culture, toy (ocean baby) of water-swelling etc.The super absorbent resin with different color in use, has added a color to life, a enjoyment.
Current colored super absorbent resin mainly adds the dyestuff of different colours in super absorbent resin production process or in product, makes super absorbent resin present distinct colors.Dyestuff can simply be divided into water-soluble dye, lipid-soluble dye, insoluble dyes according to its solvability.
If the dyestuff added is water miscible, so in use, after super absorbent resin water suction, water-soluble dye will be water-soluble, causes colored super absorbent resin " to fade ", fade.
If dyestuff is insoluble solid, then can be different due to dye solids and High hydrophilous resin density, particle diameter, cause dye solids and super absorbent resin blending dispersion uneven, in use there is dye solids and super absorbent resin layering, the problem such as to be separated;
So the dyestuff major part used in colored super absorbent resin production process is water-fast fat-soluble organic dye.Although water-fast fat-soluble organic dye overcomes the shortcoming of above two kinds of dyestuffs, himself also also exists problems.
The super absorbent resin sold in the market is polyacrylamide, polyacrylic acid (salt), polypropylene nitrile High hydrophilous resin mainly.Initiator, the linking agent of the synthon acrylamide of these High hydrophilous resins, vinylformic acid (salt), vinyl cyanide and polyreaction are all generally water miscible, and its radical polymerization is also medium mainly with water, adopts aqueous solution polymerization method to produce; Even if adopt other polymerization methodses such as inverse emulsion polymerization, its reaction essence (in each small droplets) remains water-soluble monomer radical polymerization in aqueous.And the dyestuff major part used in colored super absorbent resin production process is water-fast fat-soluble organic dye, these dyestuffs are in super absorbent resin generative process, water insoluble, mode is present between super absorbent resin microparticle surfaces or particulate just can only to rely on absorption, be mingled with etc.; Even if take special producing technique, by these dyestuffs with " centre of sphere " wrapped at Super Absorbent Polymer Particles (or microballoon) center, but in super absorbent resin use procedure, need water-swelling repeatedly, dehydration shrinkage, because the coefficient of expansion of dye granule and Super Absorbent Polymer Particles (or microballoon) is inconsistent, also Super Absorbent Polymer Particles (or microballoon) can be caused to be out of shape, to break, to pulverize, the organic dye being originally wrapped in center is discharged.Because the keying action (adsorb, be mingled with, wrap up) between these dyestuffs and super absorbent resin (or microballoon) is very weak, the two is also heterogeneous, therefore, in life-time service process, just there will be dyestuff and super absorbent resin separation phenomenon, cause uneven color.And these dyestuffs are water insoluble, can flock together precipitation in water, just can cause super absorbent resin color fade, and dyestuff flocks together.After all, the bonding force between dyestuff and super absorbent resin that has its source in of problem is too weak, and both are at the non-homophase of molecular level, easily separated.
Colored High hydrophilous resin commercially available at present all adds dyestuff to realize in High hydrophilous resin production process or in product, and so colored High hydrophilous resin also exists previously described all drawbacks.
Summary of the invention
The object of this invention is to provide the colored super absorbent resin of a kind of soilless culture, solve the problem that existing colored super absorbent resin decolours in use procedure.
Another object of the present invention is to provide the preparation method of a kind of soilless culture with colored super absorbent resin.
The technical solution adopted in the present invention is: the colored super absorbent resin of a kind of soilless culture, is that 1:0.01 ~ 0.1:0.00001 ~ 0.001 is polymerized obtained by acrylamide, dye monomer, linking agent according to mass ratio;
Described dye monomer is have water miscible azoic dyestuff with double bond, and himself has color, and polymerization still presents color later, and it is by being covalently bound in super absorbent resin structure.
Feature of the present invention is also,
The preferred 4-acryloxy of dye monomer-4 ＇-sulfonic group nitrogen benzide, 1-(4-acryloxy phenylazo-)-9,10-anthraquinone, 4-acrylamido-4 ＇-chlorine nitrogen benzide, 4-acrylamido-3 ＇, 5 ＇-dinitrobenzene nitrogen benzide, 4-acrylamido-2 ＇, 4 ＇-dinitrobenzene nitrogen benzide, 2-acryloxy-5-methyl-4 ＇-methyl-benzene, 1-p-nitrophenyl azo-group-4-acryloxy naphthalene or 2-[2-(4-acryloxy naphthalene) azobenzene] benzothiazole.
Linking agent is N, N'-methylene-bisacrylamide.
Another technical scheme of the present invention is: a kind of soilless culture preparation method of colored super absorbent resin, specifically comprises the following steps:
Step 1, is added to the water acrylamide monomer and stirs, obtain acrylamide solution; Wherein, the mass ratio of acrylamide monomer and water is 1:1 ~ 5;
Step 2, adds dye monomer, is placed in Vltrasonic device, obtain mixture A after stirring under ultrasonic radiation condition in the acrylamide solution that step 1 obtains; Wherein the mass ratio of acrylamide monomer and dye monomer is 1:0.01 ~ 0.1; Described dye monomer is a kind ofly have water miscible azoic dyestuff with double bond;
Step 3, under maintenance agitation condition, adds linking agent, obtains mixture B after stirring in mixture A; Wherein the mass ratio of acrylamide monomer and linking agent is 1:0.00001 ~ 0.001;
Step 4, adds initiator in mixture B, and after being fully uniformly mixed, under ultrasonic radiation condition, controlling temperature of reaction is 65 DEG C ~ 80 DEG C, keeps stirring reaction to carry out 30 ~ 60 minutes, obtains moisture thick product; The quality of described initiator is 0.1% ~ 1% of acrylamide monomer quality;
Step 5, moisture thick product drying step 4 obtained, sieves after mechanical disintegration and obtains dry thick product, and the thick product of drying is soaked in water the unreacted monomer of removing, colored super absorbent resin is pulverized and obtained to the product drying after immersion.
Feature of the present invention is also,
In step 1, acrylamide monomer is through recrystallization purification.
The preferred 4-acryloxy of dye monomer-4 ＇-sulfonic group nitrogen benzide, 1-(4-acryloxy phenylazo-)-9 in step 2,10-anthraquinone, 4-acrylamido-4 ＇-chlorine nitrogen benzide, 4-acrylamido-3 ＇, 5 ＇-dinitrobenzene nitrogen benzide, 4-acrylamido-2 ＇, 4 ＇-dinitrobenzene nitrogen benzide, 2-acryloxy-5-methyl-4 ＇-methyl-benzene, 1-p-nitrophenyl azo-group-4-acryloxy naphthalene or 2-[2-(4-acryloxy naphthalene) azobenzene] benzothiazole.
In step 3, linking agent is N, N'-methylene-bisacrylamide.
In step 4 initiator be in ammonium persulphate, Potassium Persulphate, Sodium Persulfate any one.
The power of ultrasonic radiation in step 4 is 50 ~ 200W.
When soaking in step 5, the thick product of drying is placed in 200 object nylon leaching nets, soaks 12 ~ 24 hours in distilled water.
The invention has the beneficial effects as follows:
(1) a kind of soilless culture of the present invention preparation method of colored super absorbent resin, by chemical reaction, the dye monomer and acrylamide etc. with double bond is carried out copolymerization, dye monomer is made to pass through to be covalently bound in super absorbent resin chemical structure, solve the problem of existing colored super absorbent resin use procedure decolouring, binding strength is good, in use procedure, chance water is there will not be " to fade ", fade, the phenomenons such as color is uneven, good-looking durable, clean environment firendly, be applicable to support the crystal mud of planting as flowers, the toy etc. of water-swelling, there are good market outlook,
(2) the present invention adopts and prepares under ultrasonic radiation condition, for part (with double bond) dye monomer that solvability is relatively poor in aqueous, can be dissolved fully under ultrasonic radiation condition or be disperseed, uniform in color in colored High hydrophilous resin obtained like this.
Embodiment
Below in conjunction with embodiment, the present invention is described in detail.
The colored super absorbent resin of a kind of soilless culture of the present invention, by acrylamide, dye monomer, according to mass ratio, linking agent is that 1:0.01 ~ 0.1:0.00001 ~ 0.001 is polymerized obtained;
Wherein, dye monomer is have water miscible azoic dyestuff with double bond, himself has color, polymerization still presents color later, it is by being covalently bound in super absorbent resin structure, Main Function is colour developing, such as, present yellow having: 4-acryloxy-4 ＇-sulfonic group nitrogen benzide, 1-(4-acryloxy phenylazo-)-9,10-anthraquinones, etc.; Present green having: 4-acrylamido-4 ＇-chlorine nitrogen benzide, 4-acrylamido-3 ＇, 5 ＇-dinitrobenzene nitrogen benzide, 4-acrylamido-2 ＇, 4 ＇-dinitrobenzene nitrogen benzide, etc.; Present red having: 2-acryloxy-5-methyl-4 ＇-methyl-benzene, 1-p-nitrophenyl azo-group-4-acryloxy naphthalene, etc.; Presenting hepaticly has: 2-[2-(4-acryloxy naphthalene) azobenzene] benzothiazole, etc.; Linking agent is N, N'-methylene-bisacrylamide.
The preparation method of above-mentioned colored super absorbent resin, specifically comprises the following steps:
Step 1, is added to the water the acrylamide monomer of purifying through recrystallization and stirs, obtain acrylamide solution; Wherein, the mass ratio of acrylamide monomer and water is 1:1 ~ 5;
Step 2, adds dye monomer, is placed in Vltrasonic device, obtain mixture A after stirring under ultrasonic radiation condition in the acrylamide solution that step 1 obtains, and ultrasonic power is 50 ~ 200W; Wherein the mass ratio of acrylamide monomer and dye monomer is 1:0.01 ~ 0.1; Described dye monomer is a kind ofly have water miscible azoic dyestuff with double bond, such as, present yellow having: 4-acryloxy-4 ＇-sulfonic group nitrogen benzide, 1-(4-acryloxy phenylazo-)-9,10-anthraquinones, etc.; Present green having: 4-acrylamido-4 ＇-chlorine nitrogen benzide, 4-acrylamido-3 ＇, 5 ＇-dinitrobenzene nitrogen benzide, 4-acrylamido-2 ＇, 4 ＇-dinitrobenzene nitrogen benzide, etc.; Present red having: 2-acryloxy-5-methyl-4 ＇-methyl-benzene, 1-p-nitrophenyl azo-group-4-acryloxy naphthalene, etc.; Presenting hepaticly has: 2-[2-(4-acryloxy naphthalene) azobenzene] benzothiazole, etc.;
Step 3, under maintenance agitation condition, adds linking agent N, N'-methylene-bisacrylamide, obtains mixture B after stirring in mixture A; Wherein the mass ratio of acrylamide monomer and linking agent is 1:0.00001 ~ 0.001;
Step 4, any one is added in initiator ammonium persulfate, Potassium Persulphate, Sodium Persulfate in mixture B, after being fully uniformly mixed, be under the condition of 50 ~ 200W at ultrasonic radiation power, controlling temperature of reaction is 65 DEG C ~ 80 DEG C, keep stirring reaction to carry out 30 ~ 60 minutes, obtain moisture thick product; The quality of described initiator is 0.1% ~ 1% of acrylamide monomer quality;
Step 5, the moisture thick product drying that step 4 is obtained, dry thick product is obtained after crossing 80 mesh sieves after mechanical disintegration, the thick product of drying is placed in 200 object nylon leaching nets, soak 12 ~ 24 hours in distilled water, the unreacted monomer that removing exists, namely obtains colored High hydrophilous resin by the product-collecting drying and crushing after soaking.
The invention has the beneficial effects as follows: due to having in water miscible dye monomer chemical structure with double bond in the present invention, can with acrylamide monomer, linking agent N, N'-methylene-bisacrylamide generation copolyreaction, with the homogeneous copolymers of dye monomer structural unit in generating structure.And the polymkeric substance of dye monomer self presents color, make the High hydrophilous resin prepared by the present invention naturally present color, add its practical value.The present invention simultaneously adopts at Ultrasonic Irradiation, for the part dye monomer that solvability is relatively poor in aqueous, can be dissolved fully under ultrasonic radiation condition or disperse, colored High hydrophilous resin uniform in color obtained like this.Due to the colored High hydrophilous resin of one provided by the invention, due to be not in common High hydrophilous resin mixing add pigment, but by chemical reaction, the polymkeric substance of colour is passed through covalent linkage block copolymerization in High hydrophilous resin chemical structure, in use, there will not be phenomenons such as meeting water " fades ", fades, uneven color.The colored High hydrophilous resin of one provided by the invention, immersion " do not fade ", good-looking durable, clean environment firendly, be applicable to as flowers support plant crystal mud, water-swelling toy, as the frog of water-swelling, the magnitude of ocean, there are good market outlook.
Embodiment 1
10g acrylamide is dissolved in 10mL distilled water, then adds 0.1g dye monomer M1, be placed in Vltrasonic device (if power is the ultrasonic cleaning machine of 50W), stir under ultrasound condition; Under keeping agitation condition, in said mixture, add 0.0001g linking agent N, N'-methylene-bisacrylamide, stirs; Then in said mixture, 0.01g initiator potassium persulfate is added, after being fully uniformly mixed, under ultrasonic radiation condition (ultrasonic power is 50W), controlling temperature of reaction is 80 DEG C, keep stirring reaction to carry out 30 minutes, obtain moisture thick product; By the moisture thick product vacuum-drying obtained, dry thick product is obtained after crossing 80 mesh sieves after mechanical disintegration, the thick product of drying is placed in 200 object nylon leaching nets, soak 12 hours in distilled water, the unreacted monomer that removing may exist, obtains golden yellow High hydrophilous resin by the product-collecting drying and crushing after soaking.
In the present embodiment, said dye monomer M1 structural formula is as follows:
The acrylate derivative that the dye monomer M1 used in the present embodiment obtains through acrylation for 4-hydroxyl-4 ＇-sulfonic group nitrogen benzide; chemistry 4-acryloxy-4 ＇-sulfonic group nitrogen benzide by name; for yellow solid, itself and acrylamide copolymerization are golden yellow later.
Golden yellow super absorbent resin prepared by the present embodiment is measured according to water suction (salt solution) the multiple measuring method recorded in People's Republic of China (PRC) agricultural industry criteria NY 886-2010 " agricultural water-holding agent ".Recording Water absorption is 729, and inhaling salt solution multiple is 58.
The golden yellow super absorbent resin prepared the present embodiment carries out the experiment of fading in the aqueous solution as follows: make tea-bag with 250 object nylon cloths, the High hydrophilous resin 1g prepared the present embodiment is loaded in tea-bag, being placed in the large beaker filling 1000g water soaks after 2 days, proposing tea-bag is suspended on above large beaker, makes unabsorbed moisture naturally drench in large beaker.It is colourless for observing water in large beaker.Get water in large beaker and load sample pool, take distilled water as reference, with Agilent-8453 type uv-visible absorption spectra instrument working sample at the absorption spectrum of 400-760nm, do not find that testing sample has absorption in this interval, namely there will not be the phenomenon of meeting water and fading, fading.
Embodiment 2
10g acrylamide is dissolved in 50mL distilled water, then adds 1g dye monomer M2, be placed in Vltrasonic device (if power is the ultrasonic cleaning machine of 200W), stir under ultrasound condition; Under keeping agitation condition, in said mixture, add 0.01g linking agent N, N'-methylene-bisacrylamide, stirs; Then in said mixture, 0.1g initiator ammonium persulfate is added, after being fully uniformly mixed, under ultrasonic radiation condition (ultrasonic power is 200W), controlling temperature of reaction is 65 DEG C, keep stirring reaction to carry out 60 minutes, obtain moisture thick product; By the moisture thick product vacuum-drying obtained, dry thick product is obtained after crossing 80 mesh sieves after mechanical disintegration, the thick product of drying is placed in 200 object nylon leaching nets, soak 24 hours in distilled water, the unreacted monomer that removing may exist, obtains green super absorbent resin by the product-collecting drying and crushing after soaking.
In the present embodiment, said dye monomer M2 structural formula is as follows:
The dye monomer M2 used in the present embodiment is amino-3 ＇ of 4-; the acrylamide derivative that 5 ＇-dinitrobenzene nitrogen benzide obtains through acrylation, chemistry 4-acrylamido-3 ＇, 5 ＇ by name-dinitrobenzene nitrogen benzide; for green solid, itself and acrylamide copolymerization are still green later.
Green super absorbent resin prepared by the present embodiment is measured according to water suction (salt solution) the multiple measuring method recorded in People's Republic of China (PRC) agricultural industry criteria NY 886-2010 " agricultural water-holding agent ".Recording Water absorption is 368, and inhaling salt solution multiple is 42.
The green super absorbent resin prepared the present embodiment carries out the experiment of fading in the aqueous solution as follows: make tea-bag with 250 object nylon cloths, the High hydrophilous resin 1g prepared the present embodiment is loaded in tea-bag, being placed in the large beaker filling 1000g water soaks after 2 days, proposing tea-bag is suspended on above large beaker, makes unabsorbed moisture naturally drench in large beaker.It is colourless for observing water in large beaker.Get water in large beaker and load sample pool, take distilled water as reference, with Agilent-8453 type uv-visible absorption spectra instrument working sample at the absorption spectrum of 400-760nm, do not find that testing sample has absorption in this interval, namely there will not be the phenomenon of meeting water and fading, fading.
Embodiment 3
10g acrylamide is dissolved in 25mL distilled water, then adds 0.5g dye monomer M3, be placed in Vltrasonic device (if power is the ultrasonic cleaning machine of 150W), stir under ultrasound condition; Under keeping agitation condition, in said mixture, add 0.001g linking agent N, N'-methylene-bisacrylamide, stirs; Then in said mixture, 0.05g initiator Sodium Persulfate is added, after being fully uniformly mixed, under ultrasonic radiation condition (ultrasonic power is 150W), controlling temperature of reaction is 70 DEG C, keep stirring reaction to carry out 60 minutes, obtain moisture thick product; By the moisture thick product vacuum-drying obtained, dry thick product is obtained after crossing 80 mesh sieves after mechanical disintegration, the thick product of drying is placed in 200 object nylon leaching nets, soak 24 hours in distilled water, the unreacted monomer that removing may exist, obtains red super absorbent resin by the product-collecting drying and crushing after soaking.
In the present embodiment, said dye monomer M3 structural formula is as follows:
The acrylate derivative that the dye monomer M3 used in the present embodiment obtains through acrylation for 2-hydroxyl 5-methyl-4 ＇-methyl-benzene; chemistry 2-acryloxy-5-methyl-4 ＇-methyl-benzene by name; for dark red solid, itself and acrylamide copolymerization are still red later.
Red super absorbent resin prepared by the present embodiment is measured according to water suction (salt solution) the multiple measuring method recorded in People's Republic of China (PRC) agricultural industry criteria NY 886-2010 " agricultural water-holding agent ".Recording Water absorption is 526, and inhaling salt solution multiple is 38.
The red super absorbent resin prepared the present embodiment carries out the experiment of fading in the aqueous solution as follows: make tea-bag with 250 object nylon cloths, the High hydrophilous resin 1g prepared the present embodiment is loaded in tea-bag, being placed in the large beaker filling 1000g water soaks after 2 days, proposing tea-bag is suspended on above large beaker, makes unabsorbed moisture naturally drench in large beaker.It is colourless for observing water in large beaker.Get water in large beaker and load sample pool, take distilled water as reference, with Agilent-8453 type uv-visible absorption spectra instrument working sample at the absorption spectrum of 400-760nm, do not find that testing sample has absorption in this interval, namely there will not be the phenomenon of meeting water and fading, fading.
Embodiment 4
10g acrylamide is dissolved in 30mL distilled water, then adds 0.5g dye monomer M4, be placed in Vltrasonic device (if power is the ultrasonic cleaning machine of 100W), stir under ultrasound condition; Under keeping agitation condition, in said mixture, add 0.001g linking agent N, N'-methylene-bisacrylamide, stirs; Then in said mixture, 0.05g initiator Sodium Persulfate is added, after being fully uniformly mixed, under ultrasonic radiation condition (ultrasonic power is 100W), controlling temperature of reaction is 75 DEG C, keep stirring reaction to carry out 50 minutes, obtain moisture thick product; By the moisture thick product vacuum-drying obtained, dry thick product is obtained after crossing 80 mesh sieves after mechanical disintegration, the thick product of drying is placed in 200 object nylon leaching nets, soak 24 hours in distilled water, the unreacted monomer that removing may exist, obtains bluish voilet super absorbent resin by the product-collecting drying and crushing after soaking.
In the present embodiment, said dye monomer M4 structural formula is as follows:
The acrylate derivative that the dye monomer M4 used in the present embodiment obtains through acrylation for 2-[2-(4-hydroxyl naphthalene) azobenzene] benzothiazole; chemistry 2-[2-(4-acryloxy naphthalene) azobenzene] benzothiazole by name; for bluish voilet solid, itself and acrylamide copolymerization are bluish voilet later.
Bluish voilet super absorbent resin prepared by the present embodiment is measured according to water suction (salt solution) the multiple measuring method recorded in People's Republic of China (PRC) agricultural industry criteria NY 886-2010 " agricultural water-holding agent ".Recording Water absorption is 492, and inhaling salt solution multiple is 35.
The bluish voilet super absorbent resin prepared the present embodiment carries out the experiment of fading in the aqueous solution as follows: make tea-bag with 250 object nylon cloths, the High hydrophilous resin 1g prepared the present embodiment is loaded in tea-bag, being placed in the large beaker filling 1000g water soaks after 2 days, proposing tea-bag is suspended on above large beaker, makes unabsorbed moisture naturally drench in large beaker.It is colourless for observing water in large beaker.Get water in large beaker and load sample pool, take distilled water as reference, with Agilent-8453 type uv-visible absorption spectra instrument working sample at the absorption spectrum of 400-760nm, do not find that testing sample has absorption in this interval, namely there will not be the phenomenon of meeting water and fading, fading.
Claims (10)
1. the colored super absorbent resin of soilless culture, is characterized in that, is that 1:0.01 ~ 0.1:0.00001 ~ 0.001 is polymerized obtained by acrylamide, dye monomer, linking agent according to mass ratio;
Described dye monomer is have water miscible azoic dyestuff with double bond, and himself has color, and polymerization still presents color later, and it is by being covalently bound in super absorbent resin structure.
2. the colored super absorbent resin of a kind of soilless culture as claimed in claim 1, it is characterized in that, the preferred 4-acryloxy of described dye monomer-4 ＇-sulfonic group nitrogen benzide, 1-(4-acryloxy phenylazo-)-9, 10-anthraquinone, 4-acrylamido-4 ＇-chlorine nitrogen benzide, 4-acrylamido-3 ＇, 5 ＇-dinitrobenzene nitrogen benzide, 4-acrylamido-2 ＇, 4 ＇-dinitrobenzene nitrogen benzide, 2-acryloxy-5-methyl-4 ＇-methyl-benzene, 1-p-nitrophenyl azo-group-4-acryloxy naphthalene or 2-[2-(4-acryloxy naphthalene) azobenzene] benzothiazole.
3. the colored super absorbent resin of a kind of soilless culture as claimed in claim 1, is characterized in that, described linking agent is N, N'-methylene-bisacrylamide.
4. a soilless culture preparation method for colored super absorbent resin, is characterized in that, specifically comprise the following steps:
Step 1, is added to the water acrylamide monomer and stirs, obtain acrylamide solution; Wherein, the mass ratio of acrylamide monomer and water is 1:1 ~ 5;
Step 2, adds dye monomer, is placed in Vltrasonic device, obtain mixture A after stirring under ultrasonic radiation condition in the acrylamide solution that step 1 obtains; Wherein the mass ratio of acrylamide monomer and dye monomer is 1:0.01 ~ 0.1; Described dye monomer is a kind ofly have water miscible azoic dyestuff with double bond;
Step 3, under maintenance agitation condition, adds linking agent, obtains mixture B after stirring in mixture A; Wherein the mass ratio of acrylamide monomer and linking agent is 1:0.00001 ~ 0.001;
Step 4, adds initiator in mixture B, and after being fully uniformly mixed, under ultrasonic radiation condition, controlling temperature of reaction is 65 DEG C ~ 80 DEG C, keeps stirring reaction to carry out 30 ~ 60 minutes, obtains moisture thick product; The quality of described initiator is 0.1% ~ 1% of acrylamide monomer quality;
Step 5, moisture thick product drying step 4 obtained, sieves after mechanical disintegration and obtains dry thick product, and the thick product of drying is soaked in water the unreacted monomer of removing, colored super absorbent resin is pulverized and obtained to the product drying after immersion.
5. a kind of soilless culture preparation method of colored super absorbent resin as claimed in claim 4, is characterized in that, in described step 1 acrylamide monomer be through recrystallization purify.
6. a kind of soilless culture as claimed in claim 4 preparation method of colored super absorbent resin, it is characterized in that, the preferred 4-acryloxy of dye monomer-4 ＇-sulfonic group nitrogen benzide in described step 2, 1-(4-acryloxy phenylazo-)-9, 10-anthraquinone, 4-acrylamido-4 ＇-chlorine nitrogen benzide, 4-acrylamido-3 ＇, 5 ＇-dinitrobenzene nitrogen benzide, 4-acrylamido-2 ＇, 4 ＇-dinitrobenzene nitrogen benzide, 2-acryloxy-5-methyl-4 ＇-methyl-benzene, 1-p-nitrophenyl azo-group-4-acryloxy naphthalene or 2-[2-(4-acryloxy naphthalene) azobenzene] benzothiazole.
7. a kind of soilless culture preparation method of colored super absorbent resin as claimed in claim 4, is characterized in that, in described step 3, linking agent is N, N'-methylene-bisacrylamide.
8. a kind of soilless culture preparation method of colored super absorbent resin as claimed in claim 4, is characterized in that, in described step 4 initiator be in ammonium persulphate, Potassium Persulphate, Sodium Persulfate any one.
9. a kind of soilless culture preparation method of colored super absorbent resin as claimed in claim 4, is characterized in that, the power of ultrasonic radiation in described step 4 is 50 ~ 200W.
10. a kind of soilless culture preparation method of colored super absorbent resin as claimed in claim 4, is characterized in that, when soaking in described step 5, the thick product of drying is placed in 200 object nylon leaching nets, soaks 12 ~ 24 hours in distilled water.
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