CN105218734A - Super absorbent resin of a kind of antibacterial, deodorizing and preparation method thereof - Google Patents
Super absorbent resin of a kind of antibacterial, deodorizing and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a kind of super absorbent resin of antibacterial, deodorizing, its formula comprises each component of following parts by weight: 200 parts, vinylformic acid, 40 ~ 80 parts, sodium hydroxide, deionized water 200 ~ 300 parts, first linking agent 0.02 ~ 2 part, tea-leaf power or tea leaf extract 4 ~ 100 parts, initiator 0.05 ~ 0.6 part, multiple crosslinking agent 0.2 ~ 4 part.This super absorbent resin can be applied in sanitary liquid absorbing articles for use widely, and the tealeaves that the present invention adds and extract thereof, while the antibacterial and deodouring performance of giving super absorbent resin excellence, do not affect every absorptive character of super absorbent resin.Raw material of the present invention is easy to get, with low cost, Be very effective, has huge economic benefit, social benefit and environmental benefit.
Description
Technical field
The present invention relates to the technical field of functional water-absorbing resin, be specifically related to super absorbent resin of a kind of antibacterial, deodorizing and preparation method thereof.
Background technology
Super absorbent resin (superabsorbentpolymer, SAP).
It is the general name of the high molecular polymer with higher water absorption energy and water retention property.
Early 1950s, Goodrich company of the U.S. develops CP, and the USDA people from north such as research centre Russell set about the crosslinking technology studying starch and vinyl cyanide in 1961 subsequently; By 1978, SANYO GS changes into company's research and development and starch graft polyacrylate copoly type super absorbent resin is produced in industrialization.
At home, super absorbent resin research is started in early 1980s, due to objective factors such as evening of starting to walk, development time are short; The super absorbent resin innovation ability that China produces and technology development capability all cannot compared with abroad.
Super absorbent resin is mainly as water-holding agent, be widely used in agricultural technology field, along with super absorbent resin is as a large amount of uses of absorption carrier in disposable sanitary articles, start sharply to expand to the demand of super absorbent resin both at home and abroad, average annual growth rate up to 30% ~ 40%, to reaching its maturity of the aspects such as kind, route of synthesis, properties and application field.
Superabsorbent polyacrylate resin in synthesis system causes and has good absorptive character, be widely used in disposable sanitary articles as absorbing medium, therefore, the domestic research to polyacrylie-type super absorbent resin is at present all the research based on its application performance in disposable sanitary articles, comprise low monomer residue amount, withstand voltage water-intake rate, high speed rate of water absorption and anti-caking performance etc., but, less to the research of the antibacterial of superabsorbent polyacrylate resin and deodoriging properties.
As everyone knows, the urine complicated of people, main containing urea and various inorganic ion, as Na
+, Cl
-, K
+, SO
4 2-deng, the urine of people is converted into the smell of the unpleasant ammonia of taste under the effect of various microorganism, and for the people of Long-term taking medicine, its urine taste is more unpleasant, especially easily causes various dermatosis, as erythema etc.
For overcoming the problems referred to above that common super absorbent resin in use exists, industry technology expert, technician are all at the super absorbent resin of making great efforts research germ resistance or antibacterial and deodouring.
In known technology field, the invention technology of application number 201310560034.1 discloses a kind of tea-polyphenol-acrylic acid series super absorbent resin, it is first neutralized with sodium hydroxide solution by vinylformic acid, then with N, N'-methylene-bisacrylamide is linking agent, Potassium Persulphate is initiator, with tea-polyphenol polymerization reaction take place in water, reacted gel through cooling, shear, dry and make.
Application number be 20141010175092.7 patent of invention disclose a kind of Antibacterialing Type High Water Absorption Resin and Preparation Method, this resin is a kind of functional high molecule material, long-chain containing allylic structure, containing hydroxy acid base and carboxylic acid sodium on side chain, there is internally crosslinked multi-hole type network structure, granule interior or outside containing can lyotropy quaternary ammonium salt cationic monomer, adopt the preparation of redox initiation system water solution polymerization process, the oxygenant adopted is Sodium Persulfate, Potassium Persulphate or ammonium persulphate, reductive agent is S-WAT or sodium bisulfite, linking agent is N, N'-methylene-bisacrylamide or polyethyleneglycol diacrylate.
Application number be 201410682192.9 patent of invention disclose a kind of preparation method of natural antibacterial absorbent resin, the method is under ice-water bath condition, with in alkali lye and acrylic acid solution, then add ammonium acrylate, natural polyelectrolyte chitosan successively, linking agent and initiator, stir, then 70 ~ 90 DEG C of reactions, occur after gel until system, be incubated 1 hour under continuing temperature of reaction condition, obtain natural high germ resistance super absorbent resin.
Application number be 201410658347.5 patent of invention disclose a kind of preparation method of germ resistance super absorbent resin, first in the reactor vinylformic acid is added, deionized water, add the sodium hydroxide solution neutralization of 50%, add acrylic morpholine, superfine silicon dioxide and multiple crosslinking agent, then logical nitrogen deoxygenation 30min, add initiator to harden at 20 ~ 30 DEG C of initiated polymerizations, temperature no longer rises and is considered as reaction end, colloid is through granulation, dry, fragmentation obtains water absorbing resin particle, last resin particle is through ethylene glycol, nano silver antimicrobials and 25% Tai-Ace S 150,120 DEG C of pyroprocessing are after 2 ~ 5 hours and get final product.
In sum, antibacterial effect is reached mainly through interpolation nano-silver ionic or quaternary ammonium salt ion at present in known technology field, but aforesaid method is applied to the potential safety hazard that may exist in the daily necessities next to the skin of women and children, may damage the health of user, also do not inquire the super absorbent resin relating to the high antibacterial and deodouring that tealeaves is made as natural function additive at present, based on this, the invention provides a kind of super absorbent resin with high antibacterial deodorization functions of pure natural, this super absorbent resin keeps high water absorbent rate, high water conservation multiplying power, high-selenium corn speed, while high resistance to pressure performance, give women and children user's safety, comfortable, the product of health care.
Summary of the invention
The technical problem to be solved in the present invention overcomes existing defect, provides a kind of super absorbent resin of antibacterial, deodorizing
In order to solve the problems of the technologies described above, the invention provides following technical scheme:
A super absorbent resin for antibacterial, deodorizing, its formula comprises each component of following parts by weight:
200 parts, vinylformic acid, 40 ~ 80 parts, sodium hydroxide, deionized water 200 ~ 300 parts, first linking agent 0.02 ~ 2 part, tea-leaf power or tea leaf extract 4 ~ 100 parts, initiator 0.05 ~ 0.6 part, multiple crosslinking agent 0.2 ~ 4 part.
Preferably, this is antibacterial, its formula of the super absorbent resin of deodorizing comprises each component of following parts by weight: 200 parts, vinylformic acid, 60 parts, sodium hydroxide, deionized water 260 parts, N, N'-methylene-bisacrylamide 0.1 part, tea-leaf power or tea leaf extract 20 parts, S-WAT 0.1 part, Sodium Persulfate 0.1 part, multiple crosslinking agent 0.5 part.
Preferably, described first linking agent is any one in N, N'-methylene-bisacrylamide, Macrogol 200, butyleneglycol, tetramethylolmethane.
Preferably, described multiple crosslinking agent be in polyethyleneglycol diglycidylether, Macrogol 200 diacrylate, Macrogol 200, butyleneglycol, tetramethylolmethane any two or two or more.
Preferably, described initiator is redox initiation system, and reductive agent is any one in sulphite, hydrosulphite, and oxygenant is any one in Potassium Persulphate, Sodium Persulfate, ammonium persulphate, hydrogen peroxide.
Tealeaves can for being one or more in green tea, oolong tea, black tea, white tea, yellow tea, black tea.Wherein, green tea includes but not limited to fried green, baking, solarization green grass or young crops, steams blue or green class green tea; Oolong tea includes but not limited to the north of Fujian Province oolong, the south of Fujian Province oolong, Guangdong oolong, Taiwan oolong class oolong tea; Described black tea include but not limited to Lapsang souchong, outer mountain microspecies, black kung fu tea, Fujian red time, the time of having stable political situation, smooth ocean time, white beautiful jade time, peaceful red time, should red time, Hunan red time, Jiangsu time; Described yellow tea includes but not limited to yellow young tea leaves, Huang little Cha, the yellow tea of yellow large teas; Described white tea includes but not limited to silver tip pekoe, white peony, tribute eyebrow, Shou Mei; Described black tea includes but not limited to the black tea in Hunan, the flat tea of Hubei man, limit, Sichuan tea, Guangxi Liu Bao loose tea, yunnan puer tea.
Preferably, the granular size of described tea-leaf power is 50 ~ 500 orders.
The employing following methods preparation of this super absorbent resin:
1), vinylformic acid is mixed with deionized water after add sodium hydroxide and neutralize, degree of neutralization is 60% ~ 80%, and after neutralization, the quality total concn of vinylformic acid and sodium acrylate is 20% ~ 50%;
2), in reaction system, add just linking agent, tea-leaf power or tea leaf extract, stir or sonic oscillation 10 ~ 30min, be warming up to 40 DEG C ~ 80 DEG C gradually, then add initiator and carry out polyreaction 30s ~ 12h, obtain gelatinous polymer;
3) by step 2) gained gelatinous polymer carries out granulation, and dries 30min ~ 5h under being placed in the temperature of 80 DEG C ~ 160 DEG C, obtains particulate polymers;
4), deionized water and multiple crosslinking agent are mixed to get thermal treatment crosslinked fluid, at 70 DEG C ~ 160 DEG C, spray method is adopted to carry out heat cross-linking surface treatment to gained granulated polymer this thermal treatment crosslinked fluid, be uniformly mixed, then carry out heat drying, to obtain final product.
Further, in step 4), tea leaf extract is joined in the mixed solution of deionized water and multiple crosslinking agent the thermal treatment crosslinked fluid obtained containing tea-leaf power or tea leaf extract, and with this crosslinked fluid, heat cross-linking surface treatment is carried out to granulated polymer, obtain the super absorbent resin of surface-coated tea leaf extract.
Preferably, in the making of the super absorbent resin of, deodorizing antibacterial at this, tea-leaf power be polymerized or in and time add, catechu leaf extract adds surface-crosslinked.
Tea is also known as " tender tea leaves ", evergreen shrubs, or dungarunga, tea tree belongs to Theaceae, Camellia in plant taxonomy, containing compositions such as tea polyphenols, catechin, L-tea nitronic acid (L-Theanine), theoflavin, tea saponin classes in tealeaves, wherein, catechin tradition is called tea tannin, is the special composition in tealeaves with bitter taste, there is anti-oxidant, anti-mutation, prophylaxis of tumours, anti AIDS virus, the multiple efficacies such as anti-platelet aggregation, reduces low-density lipoprotein, antibacterial.Therefore, tealeaves is used as antioxidant and sterilant in food, prevents food spoilage, extends the shelf life; Pharmaceutically be used as prevention and cure of cardiovascular disease, reducing blood-fat, the congee sample arteriosclerosis that prevention lipid peroxidation causes, anticancer, suppress carcinogens nitrite to be formed, improve immunity of organisms; On daily chemical products, good oil antioxidant is not only by tealeaves, and have antibacterially to relieve the pain, the effect such as healing wound, enhancement capillary vessel toughness.Based on the function of the antibacterial and deodouring of tealeaves excellence, tealeaves and extract thereof are made an addition to super absorbent resin as pure natural functional additive, give the function of the antibacterial and deodouring of super absorbent resin excellence.
Since ancient times, people have just had acquaintance to tealeaves antibacterial and deodouring.Near during the last ten years, people begin one's study and the extracts active ingredients in tealeaves are out used for antibacterial and deodouring application.The research report of Japan to this respect is more, and has developed a series of reodorant that with the addition of tea leaf extract.As " exploitation of tealeaves extractum smelly eliminating " of Ha Noi two youth, peace field English " the smelly eliminating effect of tea catechin and utilization ", Asklsl the Seventh Five-Year Plan youth " application of green tea flavonoid deodorizing material in cake "; The technical scheme by tealeaves and some other natural materials combinations produce deodorizer is disclosed in the Chinese application number patent " a kind of deodorizer and manufacture method thereof " that is CN201010260853.0, due to the existence of tea tannin, catechin in tealeaves, make this reodorant Be very effective in deodorization and sterilization; Application number is in the patent of invention " a kind of preparation method of reodorant " of CN201210488868.1, also refer to and utilizes the antibacterial and deodouring performance of tealeaves to prepare reodorant.
Super absorbent resin that is antibacterial, deodorizing of the present invention take super absorbent resin as molecular skeleton, grafting or fill tea leaf powder or tea leaf extract on skeleton, wherein tea leaf extract comprises tealeaves and extracts concentrated solution or extract concentrated solution by described tealeaves and dry and obtained tea leaf extract powder.First, with deionized water, the vinylformic acid of purifying through physical crystal is formulated as certain density acrylic acid solution, and obtain the acrylic acid solution with certain degree of neutralization with in sodium hydroxide with acrylic acid solution, add just linking agent, dispersion agent, tea-leaf power or tea leaf extract, and after ultrasonic 10-30min, add after initiator carries out polymerization instead and should obtain gelatinous polymer, or add tea-leaf power and sodium hydroxide solution after single acid polymerization, secondly, after broken granulation process is carried out to gelatinous polymer, dry and obtain granulated polymer, and with the mixed solution of certain density multiple crosslinking agent or multiple crosslinking agent and tea leaf extract, surface heat crosslinking Treatment is carried out to granulated polymer, namely super absorbent resin of the present invention is obtained.
Super absorbent resin that is antibacterial, deodorizing of the present invention can be applied in sanitary product widely, comprises baby paper diaper, baby diaper, adult diaper, adult's nappy, sanitary towel, sanitary belt, pet pads or paper for kitchen, thieving paper etc.Compared with prior art, there is following beneficial effect:
The beneficial effect that the present invention realizes: the present invention chooses natural edible level tealeaves and extract thereof as functional materials, they are compared with other chemical classes antiseptic-germicides, not only there is consistency good, security is high, to advantages such as contact no skin irritation, and there is the antibacterial of excellence, deodorizing effect, to intestinal bacteria, streptococcus aureus, the bacteriums such as Candida albicans have significant restraining effect, user is allowed to wear comfortable, avoid the erythema that conventional absorbent paper super absorbent resin may bring, skin phlegm such as to be itched at the safety problem, simultaneously, the present invention has again excellent water absorbing properties, namely while the tealeaves that adds of the present invention and extract thereof give the antibacterial and deodouring performance of super absorbent resin excellence, do not affect every absorptive character of super absorbent resin.Raw material of the present invention is easy to get, with low cost, Be very effective, has huge economic benefit, social benefit and environmental benefit.
Embodiment
Below the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein is only for instruction and explanation of the present invention, is not intended to limit the present invention.
embodiment 1
Accurately take vinylformic acid 200g, sodium hydroxide 60g, deionized water 300g, N, N'-methylene-bisacrylamide 0.1g, S-WAT 0.025g, Sodium Persulfate 0.025g, tea-leaf power 15g, polyethyleneglycol diglycidylether, Macrogol 200 press the multiple crosslinking agent 0.2g of 1:1 mol ratio configuration, then prepare in the steps below:
1), vinylformic acid is mixed with deionized water after add sodium hydroxide and neutralize, degree of neutralization is 82%;
2), in reaction system add tea-leaf power, be uniformly mixed rear sonic oscillation 10min, add N, N'-methylene-bisacrylamide, continues to stir 5min, is then warming up to 60 DEG C gradually, then add S-WAT, Sodium Persulfate initiated polymerization 90s, obtain gelatinous polymer;
3), by step 2) gained gelatinous polymer carries out granulation, and dries 30min under being placed in the temperature of 160 DEG C, obtains granulated polymer;
4), deionized water and multiple crosslinking agent are mixed to get thermal treatment crosslinked fluid, this thermal treatment crosslinked fluid is carried out heat cross-linking surface treatment to gained granulated polymer at 160 DEG C of temperature, carries out being uniformly mixed and high exhaustion of the present invention can being obtained after heat drying.
embodiment 2
Accurately take vinylformic acid 200g, sodium hydroxide 60g, deionized water 200g, N, N'-methylene-bisacrylamide 2g, S-WAT 0.1g, Sodium Persulfate 0.1g, tealeaves extracts concentrated solution 30g, and polyethyleneglycol diglycidylether, Macrogol 200 press the multiple crosslinking agent 0.5g of 1:1 mol ratio configuration, then prepares in the steps below:
1), vinylformic acid is mixed with deionized water after add sodium hydroxide and neutralize, degree of neutralization is 72%;
2), in reaction system add tea leaf extract, be uniformly mixed rear sonic oscillation 10min, add N, N'-methylene-bisacrylamide, continues to stir 5min, is then warming up to 60 DEG C gradually, then add S-WAT, Sodium Persulfate initiated polymerization 90s, obtain gelatinous polymer;
3), by step 2) gained gelatinous polymer carries out granulation, and dries 30min under being placed in the temperature of 160 DEG C, obtains granulated polymer;
4), deionized water and multiple crosslinking agent are mixed to get thermal treatment crosslinked fluid, this thermal treatment crosslinked fluid is carried out heat cross-linking surface treatment to gained granulated polymer at 160 DEG C of temperature, carries out being uniformly mixed and high exhaustion of the present invention can being obtained after heat drying.
embodiment 3
Accurately take vinylformic acid 200g, sodium hydroxide 60g, deionized water 260g, N, N'-methylene-bisacrylamide 0.1g, S-WAT 0.1g, Sodium Persulfate 0.1g, tea leaf extract 60g, polyethyleneglycol diglycidylether, tetramethylolmethane press the multiple crosslinking agent 0.5g of 1:1 mol ratio configuration, then prepare by the step of embodiment 2, super absorbent resin of the present invention can be obtained.
embodiment 4
Accurately take vinylformic acid 200g, sodium hydroxide 60g, deionized water 220g, N, N'-methylene-bisacrylamide 0.02g, S-WAT 0.3g, Sodium Persulfate 0.3g, tea leaf extract powder 200g, polyethyleneglycol diglycidylether, Macrogol 200 press the multiple crosslinking agent 0.6g of 1:1 mol ratio configuration, then prepare by the step (1) to (3) of embodiment 2, obtain granular polymkeric substance.Then multiple crosslinking agent, tealeaves are extracted concentrated solution 20g or tea leaf extract powder 20g and is added into deionized water, obtain thermal treatment after stirring and be cross-linked mixed solution, this thermal treatment is cross-linked mixed solution and at 160 DEG C of temperature, heat cross-linking surface treatment is carried out to gained granulated polymer, carry out being uniformly mixed and high exhaustion of the present invention can being obtained after heat drying.
embodiment 5
Take vinylformic acid 200 deionized water 250g, tetramethylolmethane 0.1g Sodium Persulfate 0.5g S-WAT 0.6g is polymerized gel after 1 hour, then tea-leaf power 50g and sodium hydroxide solution 165g is added, carry out neutralization to mix, crush and screen dry 3h at 155 DEG C after, add multiple crosslinking agent to gained granulated polymer to mix, obtain high exhaustion through 120 DEG C of dry 2h.
embodiment 6
Take vinylformic acid 200 deionized water 230g, tetramethylolmethane 0.1g Sodium Persulfate 0.5g S-WAT 0.6g is polymerized gel and sodium hydroxide solution 165g after 1 hour, carry out neutralization to mix, crush and screen dry 3h at 155 DEG C after, tea extract is carried out to gained granulated polymer and linking agent carries out thermal crosslinking treatment, the high exhaustion invented after being uniformly mixed heat drying, can be obtained.
embodiment 7
According to formula and the operation steps of embodiment 1 to embodiment 4, to obtain under same formula, processing condition but not add the super absorbent resin sample as a comparison of tea-leaf power or tea leaf extract, carrying out the test of absorptive character, anti-microbial property and deodoriging properties respectively.
Test conditions is as follows:
1) absorptive character of super absorbent resin are tested according to GB/T22905-2008 defined terms.
2) the Anti-microbial Performance Tests method of super absorbent resin: first, takes 0.2g embodiment 1,2 respectively, the super absorbent resin of 3,4, is cried in the sterilizing Erlenmeyer flask of 200ml after sterilising treatment, add the physiological saline of 60m1 through sterilising treatment, make it fully absorb swelling.Secondly, by the bacterial classification access liquid nutrient mediums such as intestinal bacteria, streptococcus aureus, Candida albicans, 37 DEG C, sway 24h in the shaking table of 180ppm and form bacterium liquid.Finally, the bacterium liquid got after 1ml activation add in Erlenmeyer flask 37 DEG C, sway 8h in the shaking table of 180ppm, from Erlenmeyer flask, pipetting bacterium liquid and after dilution, by being coated with the dull and stereotyped growing state observing bacterium, and calculating bacteriostasis rate.
3) the deodoriging properties test method of super absorbent resin: configure the artificial ight soil be made up of the chemical reagent such as thiomethyl alcohol, hydrogen sulfide, impregnated in the regular hour in artificial ight soil solution by super absorbent resin, rely on the sense of smell of people to carry out intuitive judgment.
Test-results is as shown in the table:
Last it is noted that the foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although with reference to previous embodiment to invention has been detailed description, for a person skilled in the art, it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature.
Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the super absorbent resin of antibacterial a, deodorizing, it is characterized in that, its formula comprises each component of following parts by weight: 200 parts, vinylformic acid, 40 ~ 80 parts, sodium hydroxide, deionized water 200 ~ 300 parts, first linking agent 0.02 ~ 2 part, tea-leaf power or tea leaf extract 4 ~ 100 parts, initiator 0.05 ~ 0.6 part, multiple crosslinking agent 0.2 ~ 4 part.
2. the super absorbent resin of a kind of antibacterial, deodorizing as claimed in claim 1, it is characterized in that, its formula comprises each component of following parts by weight: 200 parts, vinylformic acid, 60 parts, sodium hydroxide, deionized water 260 parts, N, N'-methylene-bisacrylamide 0.1 part, tea-leaf power or tea leaf extract 10 parts, S-WAT 0.1 part, Sodium Persulfate 0.1 part, multiple crosslinking agent 0.5 part.
3. the super absorbent resin of a kind of antibacterial, deodorizing as claimed in claim 1, it is characterized in that, described first linking agent is any one in N, N'-methylene-bisacrylamide, Macrogol 200, butyleneglycol, tetramethylolmethane.
4. the super absorbent resin of a kind of antibacterial, deodorizing as claimed in claim 1, it is characterized in that, described multiple crosslinking agent be in polyethyleneglycol diglycidylether, Macrogol 200 diacrylate, Macrogol 200, butyleneglycol, tetramethylolmethane any two or two or more.
5. the super absorbent resin of a kind of antibacterial, deodorizing as claimed in claim 1, it is characterized in that, described initiator is redox initiation system, reductive agent is any one in sulphite, hydrosulphite, and oxygenant is any one in Potassium Persulphate, ammonium persulphate, Sodium Persulfate, hydrogen peroxide in persulphate.
6. the super absorbent resin of a kind of antibacterial, deodorizing as claimed in claim 1, is characterized in that, described tealeaves is at least one in green tea, oolong tea, black tea, white tea, yellow tea, black tea.
7. the super absorbent resin of a kind of antibacterial, deodorizing as claimed in claim 1, it is characterized in that, the granular size of described tea-leaf power is 50 ~ 500 orders (preferably 200 ~ 300 orders).
8. a preparation method for super absorbent resin as claimed in claim 1, is characterized in that, comprises the following steps:
1), vinylformic acid is mixed with deionized water after add sodium hydroxide and neutralize, degree of neutralization is 60% ~ 80%, and after neutralization, the quality total concn of vinylformic acid and sodium acrylate is 20% ~ 50%;
2), in reaction system, add just linking agent, tea-leaf power or tea leaf extract, stir or sonic oscillation 10 ~ 30min, be warming up to 40 DEG C ~ 80 DEG C gradually, then add initiator and carry out polyreaction 30s ~ 12h, obtain gelatinous polymer;
3) by step 2) gained gelatinous polymer carries out granulation, and dries 30min ~ 5h under being placed in the temperature of 80 DEG C ~ 160 DEG C, obtains particulate polymers;
4), deionized water and multiple crosslinking agent are mixed to get thermal treatment crosslinked fluid, at 70 DEG C ~ 160 DEG C, spray method is adopted to carry out heat cross-linking surface treatment to gained granulated polymer this thermal treatment crosslinked fluid, be uniformly mixed, then carry out heat drying, to obtain final product.
9. the preparation method of super absorbent resin as claimed in claim 8, it is characterized in that, in step 4), tea leaf extract is added in the mixed solution of deionized water, multiple crosslinking agent the thermal treatment crosslinked fluid obtained containing tea leaf extract, and with this crosslinked fluid, heat cross-linking surface treatment is carried out to granulated polymer, obtain the super absorbent resin of surface-coated tea leaf extract.
10. the preparation method of super absorbent resin as claimed in claim 9, is characterized in that, the mode that tea-leaf power or tea leaf extract add crosslinking polymerization is:
Water solution polymerization process adds tea-leaf power or tea leaf extract; Or
Monomeric acrylic polymeric gel adds tea-leaf power and sodium hydroxide solution neutralizes; Or
Tea-leaf power or tea leaf extract add surface-crosslinked.
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