CN110746558A - Composite water-absorbent resin and production method thereof - Google Patents
Composite water-absorbent resin and production method thereof Download PDFInfo
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- CN110746558A CN110746558A CN201910943340.0A CN201910943340A CN110746558A CN 110746558 A CN110746558 A CN 110746558A CN 201910943340 A CN201910943340 A CN 201910943340A CN 110746558 A CN110746558 A CN 110746558A
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- absorbent resin
- composite water
- acrylic acid
- acrylamide
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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
- C08F257/00—Macromolecular compounds obtained by polymerising monomers on to polymers of aromatic monomers as defined in group C08F12/00
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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
Abstract
The invention discloses a composite water-absorbent resin and a production method thereof, wherein the composite water-absorbent resin is prepared from the following raw materials in parts by weight: 50-80 parts of acrylic acid, 20-50 parts of sodium hydroxide, 9-14 parts of sodium polystyrene sulfonate, 1-3 parts of initiator, 2-5 parts of cross-linking agent, 10-18 parts of acrylamide and 1-8 parts of chitosan. When in preparation, firstly, adding a sodium hydroxide solution into an acrylic acid solution to form a mixed solution with a certain neutralization degree; adding the mixed solution into a reaction kettle, adding potassium persulfate, divinyl benzene, sodium polystyrene sulfonate and acrylamide into the reaction kettle, fully stirring and mixing, adding chitosan, stirring and heating to a temperature, and filtering, cleaning with a cleaning solution, drying and granulating after the reaction is finished; the invention provides a composite water-absorbent resin and a production method thereof, which have simple process and good absorptivity.
Description
Technical Field
The invention relates to the field of resin materials, in particular to a composite water-absorbent resin and a production method thereof.
Background
The water-absorbing resin is a novel functional polymer material, can absorb water with the mass of tens to thousands of times, can retain water under the conditions of pressurization and heating, and has the repeated water absorption capacity of repeated water absorption, water release and water reabsorption and high safety and nontoxicity. Therefore, the nano-composite material has been widely applied to agriculture, gardens, artificial organs, medicines, physiological health, petroleum, environmental protection, building materials, chemical engineering, foods, artificial intelligent materials, sensitive materials, textiles and the like for more than 30 years, and plays an increasingly important role in various departments of national economy and the daily life of people.
At present, the acrylic super absorbent resin is most widely applied, but the acrylic super absorbent resin has many defects, and along with the improvement of the use requirement, the traditional water absorbent resin cannot meet the requirement of high-efficiency water absorption, and the rigidity and the plasticity are generally low.
Disclosure of Invention
The invention provides a composite water-absorbent resin and a production method thereof, which have simple process and good absorptivity.
In order to achieve the purpose, the composite water-absorbent resin is prepared from the following raw materials in parts by weight:
50-80 parts of acrylic acid, 20-50 parts of sodium hydroxide, 9-14 parts of sodium polystyrene sulfonate, 1-3 parts of initiator, 2-5 parts of cross-linking agent, 10-18 parts of acrylamide and 1-8 parts of chitosan.
Further, the initiator is potassium persulfate.
Further, the crosslinking agent is divinylbenzene.
Further, the composite water-absorbent resin is prepared from the following raw materials in parts by weight:
60-70 parts of acrylic acid, 20-35 parts of sodium hydroxide, 12-14 parts of sodium polystyrene sulfonate, 1-3 parts of initiator, 2-3 parts of cross-linking agent, 12-16 parts of acrylamide and 2-5 parts of chitosan.
Further, the composite water-absorbent resin is prepared from the following raw materials in parts by weight:
66 parts of acrylic acid, 24 parts of sodium hydroxide, 12 parts of sodium polystyrene sulfonate, 2 parts of an initiator, 2 parts of a cross-linking agent, 15 parts of acrylamide and 4 parts of chitosan.
A production method of composite water-absorbent resin specifically comprises the following steps:
(1) adding sodium hydroxide solution with certain concentration into acrylic acid solution to prepare acrylic acid mixed solution with certain neutralization degree;
(2) adding the mixed solution obtained in the step (1) into a reaction kettle, adding a cross-linking agent and an initiator into the reaction kettle, adding sodium polystyrene sulfonate and acrylamide, fully stirring and mixing, adding chitosan, stirring and heating, and filtering, cleaning with a cleaning solution and drying after the reaction is finished;
(3) adding the dried mixture in the step (2) into a granulator with a pore of 3-10mm for granulation to obtain semi-finished granules;
(4) and (4) drying the semi-finished product particles in the step (3) in an air-cooled drying oven at the temperature of 90-95 ℃, and coating the particles by using a coating machine to form a white round particle finished product.
Further, in the step (2), the temperature is raised to 45-55 ℃, and the heat preservation time is 1-2.5 h.
Compared with the prior art, the composite water-absorbent resin and the production method thereof are based on acrylic acid and sodium hydroxide, and the cross-linking agent, the initiator, the sodium polystyrene sulfonate, the acrylamide and the chitosan are added, so that the resin formed by mixing has a compact void structure, the specific surface area of a product can be effectively increased, and the purposes of improving the water absorption rate and the water absorption rate of the product are achieved; the production method comprises the steps of neutralization, polymerization reaction, drying and granulation, so that the process is simple, and the formed resin is more convenient to transport and the like; the composite water-absorbent resin and the production method thereof have simple process and good absorptivity.
Detailed Description
Example 1
The composite water-absorbent resin is prepared from the following raw materials in parts by weight:
60-70 parts of acrylic acid, 20-35 parts of sodium hydroxide, 12-14 parts of sodium polystyrene sulfonate, 1-3 parts of potassium persulfate, 2-3 parts of divinylbenzene, 12-16 parts of acrylamide and 2-5 parts of chitosan;
when the acrylic acid modified sodium hydroxide is to be prepared, firstly, 20-35 parts of sodium hydroxide solution is added into 60-70 parts of acrylic acid solution to form a mixed solution with a certain neutralization degree; adding the mixed solution into a reaction kettle, adding 1-3 parts of potassium persulfate and 2-3 parts of divinylbenzene into the reaction kettle, adding 12-14 parts of sodium polystyrene sulfonate and 12-16 parts of acrylamide, fully stirring and mixing, then adding 2-5 parts of chitosan, stirring and heating to 45-55 ℃, keeping the temperature for 1-2.5 hours, and filtering, cleaning with a cleaning solution and drying after the reaction is finished; then adding the dried mixture into a granulator with a pore of 3-10mm for granulation to obtain semi-finished granules; and finally, drying the semi-finished product particles in an air-cooled drying oven at the temperature of 90-95 ℃ so as to remove the humidity of the particles and completely dry the particles, and then coating the particles by using a coating machine to form a white round particle finished product.
Example 2
The composite water-absorbent resin is prepared from the following raw materials in parts by weight:
50 parts of acrylic acid, 20 parts of sodium hydroxide, 9 parts of sodium polystyrene sulfonate, 1 part of potassium persulfate, 2 parts of divinylbenzene, 18 parts of acrylamide and 8 parts of chitosan;
when the acrylic acid modified sodium hydroxide is to be prepared, firstly, 20 parts of sodium hydroxide solution is added into 50 parts of acrylic acid solution to form a mixed solution with a certain neutralization degree; adding the mixed solution into a reaction kettle, adding 1 part of potassium persulfate and 2 parts of divinylbenzene into the reaction kettle, adding 9 parts of sodium polystyrene sulfonate and 18 parts of acrylamide, fully stirring and mixing, then adding 8 parts of chitosan, stirring, heating to 45-55 ℃, keeping the temperature for 1-2.5 hours, filtering after the reaction is finished, cleaning with a cleaning solution, and drying; then adding the dried mixture into a granulator with a pore of 3-10mm for granulation to obtain semi-finished granules; and finally, drying the semi-finished product particles in an air-cooled drying oven at the temperature of 90-95 ℃ so as to remove the humidity of the particles and completely dry the particles, and then coating the particles by using a coating machine to form a white round particle finished product.
Example 3
The composite water-absorbent resin is prepared from the following raw materials in parts by weight:
80 parts of acrylic acid, 50 parts of sodium hydroxide, 14 parts of sodium polystyrene sulfonate, 3 parts of potassium persulfate, 5 parts of divinylbenzene, 10 parts of acrylamide and 1 part of chitosan;
when the preparation is carried out, 50 parts of sodium hydroxide solution is added into 80 parts of acrylic acid solution to form a mixed solution with a certain neutralization degree; adding the mixed solution into a reaction kettle, adding 3 parts of potassium persulfate and 5 parts of divinylbenzene into the reaction kettle, adding 14 parts of sodium polystyrene sulfonate and 10 parts of acrylamide, fully stirring and mixing, then adding 1 part of chitosan, stirring, heating to 45-55 ℃, keeping the temperature for 1-2.5 hours, filtering after the reaction is finished, cleaning with a cleaning solution, and drying; then adding the dried mixture into a granulator with a pore of 3-10mm for granulation to obtain semi-finished granules; and finally, drying the semi-finished product particles in an air-cooled drying oven at the temperature of 90-95 ℃ so as to remove the humidity of the particles and completely dry the particles, and then coating the particles by using a coating machine to form a white round particle finished product.
Example 4
The composite water-absorbent resin is prepared from the following raw materials in parts by weight:
66 parts of acrylic acid, 24 parts of sodium hydroxide, 12 parts of sodium polystyrene sulfonate, 2 parts of potassium persulfate, 2 parts of divinylbenzene, 15 parts of acrylamide and 4 parts of chitosan;
when the acrylic acid modified sodium hydroxide is to be prepared, firstly, 24 parts of sodium hydroxide solution is added into 66 parts of acrylic acid solution to form a mixed solution with a certain neutralization degree; adding the mixed solution into a reaction kettle, adding 2 parts of potassium persulfate and 2 parts of divinylbenzene into the reaction kettle, adding 12 parts of sodium polystyrene sulfonate and 15 parts of acrylamide, fully stirring and mixing, adding 4 parts of chitosan, stirring, heating to 45-55 ℃, keeping the temperature for 1-2.5 hours, filtering after the reaction is finished, cleaning with a cleaning solution, and drying; then adding the dried mixture into a granulator with a pore of 3-10mm for granulation to obtain semi-finished granules; and finally, drying the semi-finished product particles in an air-cooled drying oven at the temperature of 90-95 ℃ so as to remove the humidity of the particles and completely dry the particles, and then coating the particles by using a coating machine to form a white round particle finished product.
Claims (7)
1. The composite water-absorbent resin is characterized by comprising the following raw materials in parts by weight:
50-80 parts of acrylic acid, 20-50 parts of sodium hydroxide, 9-14 parts of sodium polystyrene sulfonate, 1-3 parts of initiator, 2-5 parts of cross-linking agent, 10-18 parts of acrylamide and 1-8 parts of chitosan.
2. A composite water absorbent resin according to claim 1, wherein the initiator is potassium persulfate.
3. A composite water-absorbent resin according to claim 1 or 2, wherein said crosslinking agent is divinylbenzene.
4. The composite water-absorbent resin as claimed in claim 1, which comprises the following raw materials in parts by weight:
60-70 parts of acrylic acid, 20-35 parts of sodium hydroxide, 12-14 parts of sodium polystyrene sulfonate, 1-3 parts of initiator, 2-3 parts of cross-linking agent, 12-16 parts of acrylamide and 2-5 parts of chitosan.
5. The composite water-absorbent resin as claimed in claim 1, which comprises the following raw materials in parts by weight:
66 parts of acrylic acid, 24 parts of sodium hydroxide, 12 parts of sodium polystyrene sulfonate, 2 parts of an initiator, 2 parts of a cross-linking agent, 15 parts of acrylamide and 4 parts of chitosan.
6. The production method of the composite water-absorbent resin is characterized by comprising the following steps:
(1) adding sodium hydroxide solution with certain concentration into acrylic acid solution to prepare acrylic acid mixed solution with certain neutralization degree;
(2) adding the mixed solution obtained in the step (1) into a reaction kettle, adding a cross-linking agent and an initiator into the reaction kettle, adding sodium polystyrene sulfonate and acrylamide, fully stirring and mixing, adding chitosan, stirring and heating, and filtering, cleaning with a cleaning solution and drying after the reaction is finished;
(3) adding the dried mixture in the step (2) into a granulator with a pore of 3-10mm for granulation to obtain semi-finished granules;
(4) and (4) drying the semi-finished product particles in the step (3) in an air-cooled drying oven at the temperature of 90-95 ℃, and coating the particles by using a coating machine to form a white round particle finished product.
7. The production method of the composite water-absorbent resin is characterized in that in the step (2), the temperature is raised to 45-55 ℃, and the heat preservation time is 1-2.5 h.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910943340.0A CN110746558A (en) | 2019-09-30 | 2019-09-30 | Composite water-absorbent resin and production method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910943340.0A CN110746558A (en) | 2019-09-30 | 2019-09-30 | Composite water-absorbent resin and production method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115180864A (en) * | 2022-07-13 | 2022-10-14 | 交通运输部公路科学研究所 | Bridge floor flow state concrete rapid plasticizing material |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103360548A (en) * | 2013-07-25 | 2013-10-23 | 南京市荣达树脂有限公司 | Preparation method for salt-tolerant super-absorbent resin |
| CN103360549A (en) * | 2013-07-25 | 2013-10-23 | 南京市荣达树脂有限公司 | Salt-tolerant super-absorbent resin |
| CN104356303A (en) * | 2014-11-24 | 2015-02-18 | 张家港保税区冠祥贸易有限公司 | Preparation method for natural high-antibacterial-property water-absorbent resin |
| CN105733159A (en) * | 2016-05-11 | 2016-07-06 | 西南石油大学 | Preparation method of semi-interpenetrating water-absorbent resin particles |
-
2019
- 2019-09-30 CN CN201910943340.0A patent/CN110746558A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103360548A (en) * | 2013-07-25 | 2013-10-23 | 南京市荣达树脂有限公司 | Preparation method for salt-tolerant super-absorbent resin |
| CN103360549A (en) * | 2013-07-25 | 2013-10-23 | 南京市荣达树脂有限公司 | Salt-tolerant super-absorbent resin |
| CN104356303A (en) * | 2014-11-24 | 2015-02-18 | 张家港保税区冠祥贸易有限公司 | Preparation method for natural high-antibacterial-property water-absorbent resin |
| CN105733159A (en) * | 2016-05-11 | 2016-07-06 | 西南石油大学 | Preparation method of semi-interpenetrating water-absorbent resin particles |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115180864A (en) * | 2022-07-13 | 2022-10-14 | 交通运输部公路科学研究所 | Bridge floor flow state concrete rapid plasticizing material |
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