CN104650274A - Preparation method of coal ash/sodium polyacrylate absorbent material - Google Patents
Preparation method of coal ash/sodium polyacrylate absorbent material Download PDFInfo
- Publication number
- CN104650274A CN104650274A CN201410744000.2A CN201410744000A CN104650274A CN 104650274 A CN104650274 A CN 104650274A CN 201410744000 A CN201410744000 A CN 201410744000A CN 104650274 A CN104650274 A CN 104650274A
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- China
- Prior art keywords
- acrylic acid
- sodium polyacrylate
- flyash
- preparation
- absorbent material
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Abstract
The invention discloses a preparation method of a coal ash/sodium polyacrylate absorbent material, belongs to the field of preparation of absorbent materials, and provides a low-cost method for preparing an absorbent material employing coal ashes and sodium polyacrylate to solve the problem of high cost due to the fact that the absorbent material is prepared from simple polyacrylic acid as a raw material. According to the preparation method, the coal ash/sodium polyacrylate absorbent material is prepared by two steps, namely coal ash pretreatment and composite material preparation. According to the coal ash/sodium polyacrylate absorbent material prepared by the method, the water absorbent rate can reach over 80; meanwhile, resource utilization of the coal ashes is realized; the amount of acrylic acid is reduced; the cost is reduced; and the method has a wide application prospect.
Description
Technical field
The invention belongs to water-absorbing material preparation field.
Background technology
High hydrophilous resin is that one has three-dimensional cross-linked cancellated new functional macromolecule material, absorb rapidly a large amount of water by hydration and be gel, and good water-retaining property, thus be applied to the fields such as sanitary product, agriculture and garden, desert control and greening, but the High hydrophilous resin cost that pure acrylic acid is made is high, Environmental compatibility is poor, and the Application Areas of High hydrophilous resin and application scale are restricted.
Summary of the invention
The object of this invention is to provide a kind of cost, utilize flyash and polyacrylic acid to prepare the method for water-absorbing material.
The present invention is achieved by the following technical programs: a kind of flyash/sodium polyacrylate water-absorbing material preparation method, comprise flyash pre-treatment and two steps prepared by matrix material, the preprocessing process of described flyash is employing 800 DEG C of calcined fine coal powder 4h carbon removal, is milled down to median size 12.12 μm after calcining through vibration mill, described matrix material preparation process, take vinylformic acid, molecular fraction by the relative Acrylic Acid Monomer of degree of neutralization 90%(), alkaline solution is slowly added drop-wise to corrosion stirring in vinylformic acid and makes its abundant mixed dissolution, add the mass percent of the relative Acrylic Acid Monomer of 0.2%() linking agent N, N,-methylene-bisacrylamide, add the mass percent of the relative Acrylic Acid Monomer of 75%(after dissolving) flyash, ultrasonic disperse is carried out until solution has certain viscosity after abundant stirring, take the mass percent of the relative Acrylic Acid Monomer of 0.625%() initiator potassium persulfate distilled water dissolve after join in solution, be placed in water-bath after stirring and react, temperature of reaction is 65 DEG C ~ 70 DEG C, after reacting completely, finished product is removed and be broken into particle and be placed in loft drier and dry, finished product is obtained again after mechanical disintegration.
The present invention has following beneficial effect:
This preparation method's cost is low, realizes the recycling to flyash, and the water-absorbing material water absorbent rate of preparation can reach more than 80.
Embodiment
Below in conjunction with specific embodiment, the present invention will be further described.
Specific embodiment: preparation process of the present invention comprises flyash pre-treatment and two steps prepared by matrix material, the preprocessing process of described flyash is employing 800 DEG C of calcined fine coal powder 4h carbon removal, is milled down to median size 12.12 μm after calcining through vibration mill, described matrix material preparation process, take vinylformic acid, molecular fraction by the relative Acrylic Acid Monomer of degree of neutralization 90%(), alkaline solution is slowly added drop-wise to corrosion stirring in vinylformic acid and makes its abundant mixed dissolution, add the mass percent of the relative Acrylic Acid Monomer of 0.2%() linking agent N, N,-methylene-bisacrylamide, add the mass percent of the relative Acrylic Acid Monomer of 75%(after dissolving) flyash, ultrasonic disperse is carried out until solution has certain viscosity after abundant stirring, take the mass percent of the relative Acrylic Acid Monomer of 0.625%() initiator potassium persulfate distilled water dissolve after join in solution, be placed in water-bath after stirring and react, temperature of reaction is 65 DEG C ~ 70 DEG C, after reacting completely, finished product is removed and be broken into particle and be placed in loft drier and dry, finished product is obtained again after mechanical disintegration.
Carry out water absorbing properties detection to it, water absorbent rate can reach more than 80, achieves the recycling of flyash simultaneously, decreases acrylic acid consumption, reduces cost, be with a wide range of applications.
above content is the further description done the present invention in conjunction with concrete embodiment, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, some simple deduction or replace can also be made, all should be considered as belonging to protection scope of the present invention.
Claims (1)
1. flyash/sodium polyacrylate water-absorbing material preparation method, it is characterized in that: comprise flyash pre-treatment and two steps prepared by matrix material, the preprocessing process of described flyash is employing 800 DEG C of calcined fine coal powder 4h carbon removal, is milled down to median size 12.12 μm after calcining through vibration mill, described matrix material preparation process, take vinylformic acid, molecular fraction by the relative Acrylic Acid Monomer of degree of neutralization 90%(), alkaline solution is slowly added drop-wise to corrosion stirring in vinylformic acid and makes its abundant mixed dissolution, add the mass percent of the relative Acrylic Acid Monomer of 0.2%() linking agent N, N,-methylene-bisacrylamide, add the mass percent of the relative Acrylic Acid Monomer of 75%(after dissolving) flyash, ultrasonic disperse is carried out until solution has certain viscosity after abundant stirring, take the mass percent of the relative Acrylic Acid Monomer of 0.625%() initiator potassium persulfate distilled water dissolve after join in solution, be placed in water-bath after stirring and react, temperature of reaction is 65 DEG C ~ 70 DEG C, after reacting completely, finished product is removed and be broken into particle and be placed in loft drier and dry, finished product is obtained again after mechanical disintegration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410744000.2A CN104650274A (en) | 2014-12-09 | 2014-12-09 | Preparation method of coal ash/sodium polyacrylate absorbent material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410744000.2A CN104650274A (en) | 2014-12-09 | 2014-12-09 | Preparation method of coal ash/sodium polyacrylate absorbent material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104650274A true CN104650274A (en) | 2015-05-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410744000.2A Pending CN104650274A (en) | 2014-12-09 | 2014-12-09 | Preparation method of coal ash/sodium polyacrylate absorbent material |
Country Status (1)
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| CN (1) | CN104650274A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105399892A (en) * | 2015-12-22 | 2016-03-16 | 合肥仲农生物科技有限公司 | Highly absorbent composite material |
| CN106902779A (en) * | 2017-05-04 | 2017-06-30 | 四川理工学院 | A kind of flyash/shitosan composite adsorbing material preparation method |
| CN107383422A (en) * | 2017-08-10 | 2017-11-24 | 安徽理工大学 | A kind of fly ash base composite and its preparation method and application |
| CN110079039A (en) * | 2019-04-15 | 2019-08-02 | 东北大学秦皇岛分校 | A kind of iron tailings is the water absorption and water retention composite materials and preparation method thereof of inorganic body |
-
2014
- 2014-12-09 CN CN201410744000.2A patent/CN104650274A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105399892A (en) * | 2015-12-22 | 2016-03-16 | 合肥仲农生物科技有限公司 | Highly absorbent composite material |
| CN106902779A (en) * | 2017-05-04 | 2017-06-30 | 四川理工学院 | A kind of flyash/shitosan composite adsorbing material preparation method |
| CN107383422A (en) * | 2017-08-10 | 2017-11-24 | 安徽理工大学 | A kind of fly ash base composite and its preparation method and application |
| CN110079039A (en) * | 2019-04-15 | 2019-08-02 | 东北大学秦皇岛分校 | A kind of iron tailings is the water absorption and water retention composite materials and preparation method thereof of inorganic body |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150527 |