CN110577619A - Preparation method of super absorbent resin - Google Patents
Preparation method of super absorbent resin Download PDFInfo
- Publication number
- CN110577619A CN110577619A CN201910905065.3A CN201910905065A CN110577619A CN 110577619 A CN110577619 A CN 110577619A CN 201910905065 A CN201910905065 A CN 201910905065A CN 110577619 A CN110577619 A CN 110577619A
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- CN
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- Prior art keywords
- acrylic acid
- super absorbent
- absorbent resin
- initiator
- linking agent
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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
- C08F251/00—Macromolecular compounds obtained by polymerising monomers on to polysaccharides or derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K17/00—Soil-conditioning materials or soil-stabilising materials
- C09K17/14—Soil-conditioning materials or soil-stabilising materials containing organic compounds only
- C09K17/18—Prepolymers; Macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2101/00—Agricultural use
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Soil Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Polymerisation Methods In General (AREA)
Abstract
A preparation method of a high water absorption resin is provided, the high water absorption resin is prepared by mixing acrylic acid, ammonia water, acrylamide, aminoethyl chitosan, a cross-linking agent, an initiator and pure water, and the preparation method comprises the following steps: adding acrylic acid into ammonia water for neutralization reaction, cooling to room temperature after the reaction is finished, adding acrylamide, aminoethyl chitosan, a cross-linking agent and pure water, and stirring until the acrylic acid is completely dissolved; heating the dissolved solution, adding an initiator after the temperature reaches a set temperature, and uniformly stirring; putting the mixture into an oven to react for 0.8-1 h; cutting, drying and crushing the product to obtain the powder-shaped super absorbent resin. The super absorbent resin prepared by the method has strong salt tolerance and good gel strength.
Description
Technical Field
The invention relates to a soil conditioner containing super absorbent resin.
Background
Superabsorbent polymers are functional polymeric materials that have been developed in recent years and contain strongly hydrophilic groups and have a certain degree of crosslinking. The water absorbing capacity of the conventional adsorbing materials such as paper, cotton, hemp and the like is only 15-40 times of the self weight, and the water retention capacity is quite poor. In the middle of the 70 s, the research center of the U.S. department of agriculture developed a super absorbent resin first, and thereafter various types of super absorbent resins appeared in succession. These resins are insoluble in water and organic solvents, can absorb hundreds to thousands of times their own weight of water, and have a strong water-retaining property so that water is not squeezed out even under pressure, thus drawing attention from countries around the world. In recent years, the industrial productivity of super absorbent resins has been expanding and widely used in medical and health care, building materials, environmental protection, agriculture, forestry, and food industries.
However, the existing super absorbent resin is mainly sodium type and potassium type acrylic acid series super absorbent resin, which has high water absorption efficiency but poor salt resistance, and has a large difference between the water absorption capacity in practical application and theory.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a preparation method of a high water-absorbent resin, and the high water-absorbent resin prepared by the method has strong salt resistance and good gel strength.
In order to achieve the above object, the present invention provides a method for preparing a super absorbent resin, wherein the super absorbent resin is prepared by mixing acrylic acid, ammonia water, acrylamide, aminoethyl chitosan, a cross-linking agent, an initiator and pure water, and the preparation method comprises the following steps: adding acrylic acid into ammonia water for neutralization reaction, cooling to room temperature after the reaction is finished, adding acrylamide, aminoethyl chitosan, a cross-linking agent and pure water, and stirring until the acrylic acid is completely dissolved; heating the dissolved solution, adding an initiator after the temperature reaches a set temperature, and uniformly stirring; putting the mixture into an oven to react for 0.8-1 h; cutting, drying and crushing the product to obtain the powder-shaped super absorbent resin.
Further, the concentration of the acrylic acid monomer is 30-40%, and the neutralization degree of acrylic acid is 70-85%; 10 to 15 percent of aminoethyl chitosan; 0.02 to 0.1 percent of cross-linking agent; 0.1 to 1.5 percent of initiator.
Further, the cross-linking agent is N, N-methylene bisacrylamide, and the initiator is ammonium persulfate.
The invention takes acrylic acid, acrylamide and aminoethyl chitosan as polymerization monomers, and adopts an aqueous solution polymerization method to prepare the ammonium super absorbent resin with strong salt resistance.
Detailed Description
The present invention is further described below.
Example 1
A preparation method of a high water absorption resin is provided, the high water absorption resin is prepared by mixing acrylic acid, ammonia water, acrylamide, aminoethyl chitosan, a cross-linking agent, an initiator and pure water, and the preparation method comprises the following steps: adding acrylic acid into ammonia water for neutralization reaction, cooling to room temperature after the reaction is finished, adding acrylamide, aminoethyl chitosan, a cross-linking agent and pure water, and stirring until the acrylic acid is completely dissolved; heating the dissolved solution, adding an initiator after the temperature reaches a set temperature, and uniformly stirring; putting the mixture into a drying oven to react for 0.8 h; cutting, drying and crushing the product to obtain the powder-shaped super absorbent resin.
The concentration of acrylic acid monomer is 30 percent, and the neutralization degree of acrylic acid is 70 percent; 10% of aminoethyl chitosan; 0.02% of a cross-linking agent; 0.1 percent of initiator.
Example 2
A preparation method of a high water absorption resin is provided, the high water absorption resin is prepared by mixing acrylic acid, ammonia water, acrylamide, aminoethyl chitosan, a cross-linking agent, an initiator and pure water, and the preparation method comprises the following steps: adding acrylic acid into ammonia water for neutralization reaction, cooling to room temperature after the reaction is finished, adding acrylamide, aminoethyl chitosan, a cross-linking agent and pure water, and stirring until the acrylic acid is completely dissolved; heating the dissolved solution, adding an initiator after the temperature reaches a set temperature, and uniformly stirring; putting the mixture into an oven to react for 1 hour; cutting, drying and crushing the product to obtain the powder-shaped super absorbent resin.
Further, the concentration of the acrylic acid monomer is 40%, and the neutralization degree of acrylic acid is 85%; 15% of aminoethyl chitosan; 0.1% of a crosslinking agent; 1.5 percent of initiator.
The invention takes acrylic acid, acrylamide and aminoethyl chitosan as polymerization monomers, and adopts an aqueous solution polymerization method to prepare the ammonium super absorbent resin with strong salt resistance.
Claims (3)
1. The preparation method of the super absorbent resin is characterized in that the super absorbent resin is prepared by mixing acrylic acid, ammonia water, acrylamide, aminoethyl chitosan, a cross-linking agent, an initiator and pure water, and the preparation method comprises the following steps: adding acrylic acid into ammonia water for neutralization reaction, cooling to room temperature after the reaction is finished, adding acrylamide, aminoethyl chitosan, a cross-linking agent and pure water, and stirring until the acrylic acid is completely dissolved; heating the dissolved solution, adding an initiator after the temperature reaches a set temperature, and uniformly stirring; putting the mixture into an oven to react for 0.8-1 h; cutting, drying and crushing the product to obtain the powder-shaped super absorbent resin.
2. The method for preparing the super absorbent resin as claimed in claim 1, wherein the concentration of the acrylic acid monomer is 30-40%, and the neutralization degree of acrylic acid is 70-85%; 10 to 15 percent of aminoethyl chitosan; 0.02 to 0.1 percent of cross-linking agent; 0.1 to 1.5 percent of initiator.
3. The method according to claim 1 or 2, wherein the cross-linking agent is N, N-methylene bisacrylamide, and the initiator is ammonium persulfate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910905065.3A CN110577619A (en) | 2019-09-24 | 2019-09-24 | Preparation method of super absorbent resin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910905065.3A CN110577619A (en) | 2019-09-24 | 2019-09-24 | Preparation method of super absorbent resin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110577619A true CN110577619A (en) | 2019-12-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910905065.3A Withdrawn CN110577619A (en) | 2019-09-24 | 2019-09-24 | Preparation method of super absorbent resin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110577619A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111793169A (en) * | 2020-08-11 | 2020-10-20 | 李方 | High-salt-tolerance super absorbent resin and preparation process thereof |
| CN112457860A (en) * | 2020-11-26 | 2021-03-09 | 宁夏大学 | Desert soil restoration agent developed based on gasified filter residues |
| CN115322789A (en) * | 2022-07-11 | 2022-11-11 | 杭州临安灵丰农业科技有限公司 | Soil conditioner for preventing and treating soil hardening and preparation method thereof |
-
2019
- 2019-09-24 CN CN201910905065.3A patent/CN110577619A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111793169A (en) * | 2020-08-11 | 2020-10-20 | 李方 | High-salt-tolerance super absorbent resin and preparation process thereof |
| CN111793169B (en) * | 2020-08-11 | 2021-09-17 | 乐清市川嘉电气科技有限公司 | High-salt-tolerance super absorbent resin and preparation process thereof |
| CN112457860A (en) * | 2020-11-26 | 2021-03-09 | 宁夏大学 | Desert soil restoration agent developed based on gasified filter residues |
| CN115322789A (en) * | 2022-07-11 | 2022-11-11 | 杭州临安灵丰农业科技有限公司 | Soil conditioner for preventing and treating soil hardening and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20191217 |
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| WW01 | Invention patent application withdrawn after publication |