CN109111544B - High-multiple salt-tolerance super absorbent resin - Google Patents
High-multiple salt-tolerance super absorbent resin Download PDFInfo
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- CN109111544B CN109111544B CN201810823749.4A CN201810823749A CN109111544B CN 109111544 B CN109111544 B CN 109111544B CN 201810823749 A CN201810823749 A CN 201810823749A CN 109111544 B CN109111544 B CN 109111544B
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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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Abstract
The invention provides a high-multiple salt-resistance super absorbent resin, which comprises the following components in percentage by weight: 100 parts of acrylic acid, 15-45 parts of sodium hydroxide, 2-12 parts of salt water absorption assisting monomers, 0.02-0.5 part of initiator, 0.02-0.5 part of cross-linking agent, 0.1-1.0 part of water absorption auxiliary agent and 150-250 parts of water, wherein the water absorption auxiliary agent is one or two of K12 or sodium dodecyl benzene sulfonate. The high-multiple salt-tolerance super absorbent resin improves the water absorption multiple of saturated salt water, blood and urine by controlling the proportion and material selection of acrylic acid, sodium hydroxide, salt water absorption assisting monomers, an initiator, a cross-linking agent, a water absorption auxiliary agent and water, wherein the salt water absorption multiple reaches more than 100 times, and the saturated deionized water absorption multiple reaches more than 900 times.
Description
Technical Field
The invention relates to the technical field of high polymer materials, in particular to a super absorbent resin.
Background
At present, super absorbent resin is widely applied to various fields of life and industry as a novel functional polymer material, for example, the super absorbent resin is widely applied to the aspects of medicine and health, agriculture, forestry and gardening, desert control and the like. From the beginning of the 80 s, superabsorbent resins were used in sanitary materials as carriers for absorption of artificial body fluids, of which the most used amount was the water-absorbent resin for sanitary napkins for infants and women. Wherein 80% -85% of the yield is applied to the sanitary product as the most main absorption material of human body fluid, especially urine.
The water absorption process of the super absorbent resin is a very complicated process, hydrophilic ions are the power factor of the super absorbent resin capable of completing the water absorption process, and the network structure of the resin is the structural factor capable of absorbing a large amount of water. Before water absorption, the polymer network is a solid network bundle and is not ionized into ion pairs, the polymer network bundle is expanded under the hydration action of hydrophilic groups and water molecules during water absorption, the concentration difference of ions inside and outside the network is generated, so that osmotic pressure is generated inside and outside the network structure, and the water molecules permeate into the network structure under the action of the osmotic pressure. Therefore, when the adsorbed water contains salts, the osmotic pressure decreases, and the water absorption capacity decreases.
However, human urine and blood are complex in composition and mainly contain urea and various inorganic salt ions such as Cl-、Na+、K+、SO4 2-And the like. Various ionic components have great influence on the water absorption capacity of the super absorbent resin, and the absorption rate of the super absorbent resin is greatly reduced.
Therefore, it is an urgent technical problem to provide a super absorbent resin which has improved salt resistance and absorbs a large amount of liquid containing other inorganic salt ions, such as saline water, blood, urine, etc.
Disclosure of Invention
The present invention is directed to solving the problems described above. The invention aims to provide a high-multiple salt-tolerance super absorbent resin which can improve the water absorption multiple of saturated saline, blood and urine, wherein the saline absorption multiple reaches more than 100 times, and the saturated deionized water absorption multiple reaches more than 900 times.
The invention provides a high-multiple salt-resistance super absorbent resin, which comprises the following components in percentage by weight:
wherein the water absorption auxiliary agent is one or two of K12 or sodium dodecyl benzene sulfonate.
Alternatively, the high multiple salt tolerance super absorbent resin contains the following components, and the content of each component is expressed as follows:
wherein the water absorption auxiliary agent is one or two of K12 or sodium dodecyl benzene sulfonate.
Alternatively, the high multiple salt tolerance super absorbent resin contains the following components, and the content of each component is expressed as follows:
optionally, the salt-absorption-aiding monomers include one or more of acrylamide, acrylonitrile, 2-acrylamido-2-methylpropanesulfonic acid.
Alternatively, the initiator is one or more of ammonium persulfate, sodium persulfate, potassium persulfate and sodium bisulfite.
Alternatively, the crosslinking agent is N, N' -methyl bisacrylamide.
Alternatively, the water absorption aid may be one or more of other anionic surfactants.
The high-multiple salt-resistance super absorbent resin comprises the following components: acrylic acid, sodium hydroxide, salt water absorption assisting monomers, an initiator, a cross-linking agent, a water absorption assistant and water.
Acrylic acid is used as a main component of the high-multiple salt-resistance super absorbent resin, has good water absorption but poor salt resistance, so the proportion and the material selection of the components are strictly controlled in the invention, the defect of poor salt resistance of the acrylic acid is overcome, and the high-salt-resistance super absorbent resin is obtained.
The initiator is used as an important component of the high-multiple salt-resistance super absorbent resin, the low content of the initiator causes less active centers of the super absorbent resin, the low polymerization speed, the low crosslinking degree and the reduced imbibition rate, the excessive content of the initiator causes other side crosslinking reactions in the imbibition process to cause the excessive crosslinking degree, so that the implosion is easy to occur, and the reduced imbibition rate is achieved. Therefore, the content of the initiator in the present invention is 0.02 to 0.5 part by weight, preferably 0.1 to 0.45 part by weight, and more preferably 0.2 to 0.4 part by weight. The initiator in the invention is ammonium persulfate, sodium persulfate, potassium persulfate, sodium bisulfite or other redox initiators.
The water absorption auxiliary agent is used as an important component of the high-multiple salt-tolerance super absorbent resin, has strong water absorption and can absorb thousands of times of water by mass. The inventor finds that the water absorption auxiliary agent added into the super absorbent resin has an unexpected effect, and no precedent for adding the water absorption auxiliary agent into the super absorbent resin exists before, so that the invention widens the development direction of the super absorbent resin. According to the invention, K12 or sodium dodecyl benzene sulfonate is selected as the water absorption auxiliary agent, so that the absorption multiple of the saturated water absorption saturated salt water of the super absorbent resin can be improved, and the absorption multiple of the deionized water is not reduced. The water absorption aid is contained in an amount of 0.1 to 1.0 part by weight, preferably 0.2 to 0.8 part by weight, more preferably 0.4 to 0.6 part by weight.
The salt water absorption assisting monomer is used as an important component of the high-multiple salt-resistance super absorbent resin, and is mainly used for improving the tolerance of the super absorbent resin to inorganic salt ions such as Cl-, Na +, K +, SO 42-and the like and improving the water absorption rate of liquid with complex components such as human urine, blood and the like. The salt water absorption assisting monomer comprises one or more of acrylamide, acrylonitrile and 2-acrylamido-2-methylpropanesulfonic acid, and the content of the salt water absorption assisting monomer is 2-12 parts by weight, preferably 4-10 parts by weight, and more preferably 5-10 parts by weight.
Sodium hydroxide, which is an important component of the high multiple salt-resistant super absorbent resin, is neutralized with acrylic acid to generate sodium acrylate, and then is copolymerized with acrylic acid and a salt water-resistant monomer to generate the super absorbent resin. When the addition amount of the sodium hydroxide is less, the water absorption rate of the super absorbent resin is increased along with the increase of the addition amount of the sodium hydroxide until the peak value is reached, and the water absorption rate of the super absorbent resin is reduced along with the continuous increase of the addition amount of the sodium hydroxide. Accordingly, the sodium hydroxide of the present invention is contained in an amount of 15 to 45 parts by weight, preferably 18 to 42 parts by weight, more preferably 20 to 40 parts by weight.
Different cross-linking agents have great influence on the performance of the super absorbent resin, and the purpose of the cross-linking agent is to improve the strength of the super absorbent resin after water absorption and prevent the super absorbent resin from being dissolved by water. The cross-linking agent is N, N' -methylene bisacrylamide, which is beneficial for the super absorbent resin to form an interpenetrating network structure, so that the salt tolerance of the super absorbent resin is improved, and the water absorption of 0.9% sodium chloride normal saline reaches 100 times. The content of the crosslinking agent in the present invention is 0.02 to 0.5 parts by weight, preferably 0.05 to 0.45 parts by weight, and more preferably 0.1 to 0.4 parts by weight.
The invention improves the water absorption times of saturated saline water, blood and urine by controlling the proportion and material selection of acrylic acid, sodium hydroxide, saline water absorption assisting monomer, initiator, cross-linking agent, water absorption auxiliary agent and water, the saline water absorption times reach more than 100 times, and the saturated deionized water absorption times reach more than 900 times, thus being particularly suitable for adult diapers and sanitary napkins
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
The high multiple salt-resistant super absorbent resin provided by the present invention will be explained in detail by way of specific examples
Example 1
The high-multiple salt-resistance super absorbent resin comprises the following components in percentage by weight:
the high-multiple salt tolerance super absorbent resin of example 1 has the water absorption multiple of 930 times, the saline water absorption multiple of 105 times, the urine water absorption multiple of 98 times, and the blood water absorption multiple of 95 times, and has good salt tolerance.
Example 2
The high-multiple salt-resistance super absorbent resin comprises the following components in percentage by weight:
the water absorption capacity of the high-capacity salt-tolerant high-water-absorption resin deionized water in the embodiment 2 is 985 times, the water absorption capacity of saline water is 98 times, the water absorption capacity of urine is 96 times, and the water absorption capacity of blood is 93 times, so that the salt tolerance of the high-water-absorption resin is improved, and the water absorption capacity of the deionized water is prevented from being reduced to a greater extent.
Example 3
The high-multiple salt-resistance super absorbent resin comprises the following components in percentage by weight:
the water absorption capacity of the high-capacity salt-tolerant super absorbent resin deionized water in example 3 is 900 times, the water absorption capacity of saline is 105 times, the water absorption capacity of urine is 112 times, the water absorption capacity of blood is 103 times, and the effect of the super absorbent resin on absorbing urine and blood is better.
The water absorption auxiliary agent in the embodiment of the invention is one or two of K12 or sodium dodecyl benzene sulfonate. The absorption-aiding salt water monomer comprises one or more of acrylamide, acrylonitrile and 2-acrylamido-2-methyl propane sulfonic acid. The initiator is one or more of ammonium persulfate, sodium persulfate, potassium persulfate and sodium bisulfite. The cross-linking agent is N, N' -methylene bisacrylamide. The water absorption auxiliary agent can also be one or more than one of other anionic surfactants.
The parameters for the high multiple salt tolerance superabsorbent resins of the different components of some of the examples of the invention are given further below by way of a table. Table 1 shows the water absorption parameters of some examples of the invention.
TABLE 1A
TABLE 1B
The invention uses artificially prepared artificial blood and artificial urine to replace blood and urine, and the specific formula is as follows:
artificial blood: 88.14% of deionized water, 10.0% of glycerol, 1.0% of sodium chloride, 0.4% of sodium carbonate and 0.46% of hydroxymethyl cellulose.
Artificial urine: 97.09% of deionized water, 1.94% of urea, 0.8% of sodium chloride, 0.11% of magnesium sulfate heptahydrate and 0.06% of calcium chloride.
Saline water: 0.9% sodium chloride normal saline.
Finally, it should be noted that: in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above examples are only for illustrating the technical solutions of the present invention, and are not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (1)
1. The high-multiple salt-resistance super absorbent resin is characterized by comprising the following components in percentage by weight:
wherein the water absorption auxiliary agent is K12;
the absorption-aiding salt water monomer comprises one or more of acrylamide, acrylonitrile and 2-acrylamido-2-methylpropane sulfonic acid;
the initiator is one or more of ammonium persulfate, sodium persulfate, potassium persulfate and sodium bisulfite;
the cross-linking agent is N, N' -methylene bisacrylamide.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810823749.4A CN109111544B (en) | 2018-07-25 | 2018-07-25 | High-multiple salt-tolerance super absorbent resin |
| PCT/CN2018/111574 WO2019076384A1 (en) | 2018-07-25 | 2018-10-24 | High multiple salt-resistant high water absorption resin |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810823749.4A CN109111544B (en) | 2018-07-25 | 2018-07-25 | High-multiple salt-tolerance super absorbent resin |
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| CN109111544A CN109111544A (en) | 2019-01-01 |
| CN109111544B true CN109111544B (en) | 2020-09-01 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110229256A (en) * | 2019-06-11 | 2019-09-13 | 安徽富瑞雪化工科技股份有限公司 | A kind of production method of super absorbent resin |
| CN111215039B (en) * | 2019-11-21 | 2023-06-09 | 怡佳(福建)卫生用品股份有限公司 | Adsorption material for paper diapers, and preparation method and application thereof |
| CN113683718B (en) * | 2021-08-13 | 2022-12-09 | 浙江工业大学 | Preparation method of low reverse osmosis high water absorption resin suitable for hygienic products |
| CN114316107B (en) * | 2022-01-07 | 2023-08-18 | 安徽富瑞雪化工科技股份有限公司 | Novel production method of super absorbent resin |
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| CN102712712A (en) * | 2009-12-24 | 2012-10-03 | 株式会社日本触媒 | Water-absorbable polyacrylic acid resin powder, and process for production thereof |
| CN103910896A (en) * | 2014-04-08 | 2014-07-09 | 万华化学集团股份有限公司 | Preparation method of macromolecular water-absorbent resin with low reverse osmosis |
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| CN102161725B (en) * | 2011-01-11 | 2012-10-10 | 中国海洋石油总公司 | Method for preparing and modifying polyacrylic acid super-absorbent resin |
| CN104744711B (en) * | 2015-03-25 | 2017-06-20 | 华南理工大学 | A kind of whiteness acrylic acid high hydroscopic resin high and preparation method thereof |
| CN106280163A (en) * | 2015-05-26 | 2017-01-04 | 湖北乾峰新材料科技有限公司 | A kind of preparation method of salt-tolerant acrylic system High hydrophilous resin |
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| CN102712712A (en) * | 2009-12-24 | 2012-10-03 | 株式会社日本触媒 | Water-absorbable polyacrylic acid resin powder, and process for production thereof |
| CN103910896A (en) * | 2014-04-08 | 2014-07-09 | 万华化学集团股份有限公司 | Preparation method of macromolecular water-absorbent resin with low reverse osmosis |
| CN104327209A (en) * | 2014-11-25 | 2015-02-04 | 江苏达胜加速器制造有限公司 | Preparation method of super absorbent resin for sanitary material |
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| CN109111544A (en) | 2019-01-01 |
| WO2019076384A1 (en) | 2019-04-25 |
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Denomination of invention: A super absorbent resin with high multiple salt resistance Effective date of registration: 20201222 Granted publication date: 20200901 Pledgee: Merchants Bank Fuyang branch of Limited by Share Ltd. Yingshang Pledgor: ANHUI FURUIXUE CHEMICAL TECHNOLOGY Co.,Ltd. Registration number: Y2020980009699 |
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