CN108752531A - Boric acid monoglyceride mono acrylic ester super absorbent resin and preparation method thereof - Google Patents
Boric acid monoglyceride mono acrylic ester super absorbent resin and preparation method thereof Download PDFInfo
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- CN108752531A CN108752531A CN201810508893.9A CN201810508893A CN108752531A CN 108752531 A CN108752531 A CN 108752531A CN 201810508893 A CN201810508893 A CN 201810508893A CN 108752531 A CN108752531 A CN 108752531A
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- acrylic acid
- mass ratio
- super absorbent
- absorbent resin
- boric acid
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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
- C08F251/02—Macromolecular compounds obtained by polymerising monomers on to polysaccharides or derivatives thereof on to cellulose or derivatives thereof
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Abstract
The invention discloses a kind of super absorbent resins comprising hydroxypropyl methyl cellulose, acrylic acid, sodium hydroxide, ammonium persulfate, sodium hydrogensulfite, polyethyleneglycol diacrylate, boric acid monoglyceride mono acrylic ester, wherein：The mass ratio of acrylic acid and hydroxypropyl methyl cellulose is (4-9)：1, the mass ratio of acrylic acid and sodium hydroxide is (0.6-1.4)：1, the mass ratio of acrylic acid and ammonium persulfate is (16.7-500)：1, the mass ratio of acrylic acid and sodium hydrogensulfite is (16.7-500)：1, the mass ratio of acrylic acid and polyethyleneglycol diacrylate is (200-1000)：1, the mass ratio of acrylic acid and boric acid monoglyceride mono acrylic ester is (1-100)：1.The super absorbent resin of the present invention can directly be mixed with cultivation matrix or soil, and slow release moisture, persistent can improve the moisture content of soil；Can improve the boron content in matrix or soil with slow release boron element, have good facilitation to the growth and development of crop, play improve soil texture, retain water and nutrients purpose.
Description
Technical field
The invention belongs to agricultural high-hygroscopicity resin technical fields, and in particular to a kind of agricultural boric acid monoglyceride list acrylic acid
Ester super absorbent resin prepares material and preparation method thereof.
Background technology
China is one of the country of extreme dehydration in the world.China is a large agricultural country again, and agricultural water accounts for national use
The 70% of water, in addition in current China's agricultural production process, the Land use systems of water resource are not only sharp still based on extensive style
It is low with rate, and cause a large amount of wastes of water resource.In recent years, China's the contradiction of supply and demand for the water resource is more prominent, drought and water shortage
As the key constraints of restriction agricultural sustainable development.Developing Water-saving Agriculture is to solve the problems, such as this main path,
Middle chemical water-saving technology is a kind of emerging agricultural water conservation Technology of Drought-resistant.The one kind of super absorbent resin as water-saving material, often
As water-keeping material, the water holding capacity that can effectively improve soil texture, improve soil also has control fertilizer slow-release performance, improves
The utilization ratio of fertilizer reduces Effects of Fertilization Frequency.At the same time, the soil generally existing boron element shortage problem in China, in soil
The shortage of boron element will influence the growth and development of plant, cause flower and fruit growth to be obstructed, the decline of pollen activity and germination rate
A series of problems, such as.Boron element is one of trace element necessary to crop growth, transport, reproduction to carbohydrate
Organ build up and develop, the division of cell and elongation have good facilitation, and boron element proposes crop yield
Height also has prodigious facilitation.
Synthesis material used in existing agricultural high-hygroscopicity resin is usually starch, and the high-hydroscopicity of starch type can be set
Although fat has good water imbibition, heat-resisting salt tolerance is poor, be easy to cause the hardened of soil.The high-hydroscopicity of cellulose type
The water demand ratio starch type of resin it is slightly lower, but its good salt tolerance, pH value are easily adjusted, and the better performances of antibiont degradation have
Important environment protection significance and economic value.
Invention content
The purpose of the present invention is be directed to boron element shortage in soil, retention capacity of soil difference and starch type high-hydroscopicity tree
The problems such as salt tolerance and poor stability of fat, proposes that one kind can improve soil texture, good salt tolerance and not degradable, Neng Gouwei
Soil provide micro boron element, water suction and water retention property it is excellent, promote crop growth agricultural safety super absorbent resin
And preparation method thereof.
To achieve the above object, the present invention uses following technical scheme：
A kind of boric acid monoglyceride mono acrylic ester super absorbent resin, including：
Hydroxypropyl methyl cellulose, acrylic acid, sodium hydroxide, ammonium persulfate, sodium hydrogensulfite, polyethylene glycol diacrylate
Ester, boric acid monoglyceride mono acrylic ester；Each component mass ratio is as follows：The mass ratio of acrylic acid and hydroxypropyl methyl cellulose is
(4-9)：1, the mass ratio of acrylic acid and sodium hydroxide is (0.6-1.4)：1, the mass ratio of acrylic acid and ammonium persulfate is
(16.7-500)：1, the mass ratio of acrylic acid and sodium hydrogensulfite is (16.7-500)：1, two propylene of acrylic acid and polyethylene glycol
The mass ratio of acid esters is (200-1000)：1, the mass ratio of acrylic acid and boric acid monoglyceride mono acrylic ester is (1-100)：1.
A concentration of 10-60% of the sodium hydroxide.
The acrylic acid concentration is 20-60%.
The ammonium persulfate and sodium hydrogensulfite is mixed initiator.
The polyethyleneglycol diacrylate is crosslinking agent.
The boric acid monoglyceride mono acrylic ester is boron element grafted monomers.
The preparation method of above-mentioned boric acid monoglyceride mono acrylic ester super absorbent resin, includes the following steps：
(1) the ammonium persulfate-sodium bisulfite initiator accurately weighed with balance, is added the steaming of 100-500 times of its quality
It dissolves spare in distilled water, certain hydroxypropyl methyl cellulose is added in beaker, the ammonium persulfate-bisulfite that will have been dissolved
Sodium initiator, which is dissolved in pouring into, to be placed in the beaker of hydroxypropyl methyl cellulose, after being stirred evenly with glass bar, is put into micro-wave oven,
Low fire heating 4-6min, is gelatinized it；
(2) it and, is added after waiting solution to cool down in carrying out the good sodium hydroxide of configured in advance and acrylic acid in ice-water bath
The crosslinking agent polyethyleneglycol diacrylate of certain mass adds few drops of boric acid monoglyceride mono acrylic ester solution, uses glass
Stick stirs evenly spare；
(3) (2) being poured into (1) that gelatinization is completed, after stirring evenly, is put into micro-wave oven, moderate heat heats 6-10min,
Obtain head product；
(4) head product obtained in (3) is put into mortar and is ground, weigh the head product distilled water of certain mass
Washing several times, is used in combination pH meter to detect its pH, until neutrality.Then, then with absolute ethyl alcohol it washs three times, and impregnates 10-
12h is put into baking oven after filtering and is dried, and pulverizes to obtain final product, i.e. boric acid monoglyceride mono acrylic ester high-hydroscopicity
Resin.
Advantages of the present invention
The present invention uses hydroxypropyl methyl cellulose to replace starch as the grafting skeleton of super absorbent resin, improves starch
The heat-resisting salt tolerance of type super absorbent resin is poor, be easy to cause the hardened problem of soil, the suction of the super absorbent resin of cellulose type
Water is more slightly lower than starch type, but its good salt tolerance, pH value are easily adjusted, and the better performances of antibiont degradation have important environmental protection
Meaning and economic value.The present invention uses acrylic acid, boric acid monoglyceride mono acrylic ester as grafted monomers, with polyethylene glycol two
Acrylate as crosslinking agent, ammonium persulfate-sodium bisulfite as mixed initiator, by the method for Microwave Emulsifier-Free Polymerization by propylene
Acid and boric acid monoglyceride mono acrylic ester are grafted in cellulose skeleton.The present invention is using polyethyleneglycol diacrylate as crosslinking
Agent has the advantages that nontoxic, water-soluble and good dispersion, the introducing shape using boric acid monoglyceride mono acrylic ester as boron element
Formula, other than it can be to provide micro boron element in soil matrix, boric acid monoglyceride mono acrylic ester be lived as a kind of surface
Property agent, have good physical and chemical performance and surface-active.
After the super absorbent resin of the present invention is mixed with soil or cultivation matrix, in germination, emergence and grew
Moisture is slowly discharged in journey, improves the moisture content of soil, is increased soil matrix porosity, is promoted the breathing of plant root and stretch
It is long；In the super absorbent resin boron element is introduced simultaneously, the characteristics of by super absorbent resin slow release, boron element is delayed
Slow is discharged into soil or cultivation matrix, provides lasting nutriment for the growth and development of crop, improves the structure of soil, from
And achieve the purpose that retain water and nutrients.
Specific implementation mode
With reference to specific embodiment, the present invention is described in more detail.
A kind of boric acid monoglyceride mono acrylic ester super absorbent resin, it is by following quality (units：G) material group
At：
Hydroxypropyl methyl cellulose 1, sodium hydroxide 4.44, ammonium persulfate 0.07, sodium hydrogensulfite 0.07, gathers acrylic acid 6
Glycol diacrylate 0.12, boric acid monoglyceride mono acrylic ester 0.18.
A concentration of the 30% of the sodium hydroxide.
The acrylic acid concentration is 50%.
The ammonium persulfate and sodium hydrogensulfite is mixed initiator, mass ratio 1:1.
The polyethyleneglycol diacrylate is crosslinking agent.
The boric acid monoglyceride mono acrylic ester is boron element grafted monomers.
The preparation method of above-mentioned boric acid monoglyceride mono acrylic ester super absorbent resin, which is characterized in that including following step
Suddenly：
(1) steaming of 500 times of its quality is added in the ammonium persulfate-sodium bisulfite mixed initiator accurately weighed with balance
It dissolves spare in distilled water, load weighted hydroxypropyl methyl cellulose is added in beaker, the ammonium persulfate-sulfurous acid that will have been dissolved
Hydrogen sodium initiator, which is dissolved in pouring into, to be placed in the beaker of hydroxypropyl methyl cellulose, after being stirred evenly with glass bar, is put into micro-wave oven
In, low fire heating 5min is gelatinized it；
(2) and, degree of neutralization is in carrying out 30% good sodium hydroxide of configured in advance and 50% acrylic acid in ice-water bath
40%, load weighted crosslinking agent polyethyleneglycol diacrylate is added after waiting solution to cool down, adds boric acid monoglyceride list propylene
Acid esters solution is stirred evenly spare with glass bar；
(3) (2) are poured into (1) that gelatinization is completed, after stirring evenly, is put into micro-wave oven, moderate heat heats 7min, obtains
Head product；
(4) head product obtained in (3) is put into mortar and is ground, weigh the head product distilled water of certain mass
Washing several times, is used in combination pH meter to detect its pH, until neutrality.Then, then with absolute ethyl alcohol it washs three times, and impregnates 12h, mistake
It is put into baking oven after filter to be dried, pulverizes to obtain final product, i.e. boric acid monoglyceride mono acrylic ester super absorbent resin.
Application method：By the super absorbent resin grind into powder after drying, the load boron high-hydroscopicity tree of certain mass is taken
Fat is put into enough water, is uniformly mixed with matrix or soil after water suction is saturated.
Performance test
The water absorbing capacity of super absorbent resin generally indicates that is, unit mass super absorbent resin absorbs water with water absorbent rate
To absorbed moisture when saturation quality or volume with do not absorb water before the mass ratio of super absorbent resin indicated with symbol Q,
Unit is g/g or ml/g.This experiment indicates water absorbent rate using mass ratio, i.e. the unit of water absorbent rate is g/g, passes through filtration method
Water absorbent rate is measured, i.e., prior load weighted super absorbent resin is impregnated with a large amount of distilled water, waits absorbing water
When to saturation, with the static 30min of the nylon wire of 200 mesh, the quality of the super absorbent resin after water suction is weighed, by the quality of the two
Than being used as water absorbent rate.Specific calculation formula is as follows：
In formula：Q- water absorbent rates, g/g；
m1The quality of super absorbent resin before water suction, g；
m2The quality of super absorbent resin after water suction, g.
It is 308.45g/g that the boric acid monoglyceride super absorbent resin of preparation is measured its water absorbent rate according to the method described above.
Technical scheme of the present invention is described in detail above.It is apparent that the present invention is not limited in described
Hold.Those skilled in the art can also make a variety of variations accordingly, but any be equal or similar variation with of the invention
It shall fall within the protection scope of the present invention.
Claims (7)
1. a kind of boric acid monoglyceride mono acrylic ester super absorbent resin, which is characterized in that including：
Hydroxypropyl methyl cellulose, acrylic acid, sodium hydroxide, ammonium persulfate, sodium hydrogensulfite, polyethyleneglycol diacrylate,
Boric acid monoglyceride mono acrylic ester；
The mass ratio of each component is as follows：
The mass ratio of acrylic acid and hydroxypropyl methyl cellulose is (4-9)：1；
The mass ratio of acrylic acid and sodium hydroxide is (0.6-1.4)：1；
The mass ratio of acrylic acid and ammonium persulfate is (16.7-500)：1；
The mass ratio of acrylic acid and sodium hydrogensulfite is (16.7-500)：1；
The mass ratio of acrylic acid and polyethyleneglycol diacrylate is (200-1000)：1；
The mass ratio of acrylic acid and boric acid monoglyceride mono acrylic ester is (1-100)：1.
2. super absorbent resin according to claim 1, which is characterized in that a concentration of 10-60% of the sodium hydroxide.
3. super absorbent resin according to claim 1, which is characterized in that the boric acid monoglyceride mono acrylic ester is boron
The grafted monomers of element.
4. super absorbent resin according to claim 1, which is characterized in that a concentration of 20-60% of the acrylic acid.
5. the preparation method of boric acid monoglyceride mono acrylic ester super absorbent resin described in claim 1, which is characterized in that including
Following steps：
1) ammonium persulfate-sodium bisulfite is weighed as initiator, and the water progress that 100-500 times of the initiator quality is added is molten
It solves spare；
2) step 1) gains and hydroxypropyl methyl cellulose are dissolved, heating is gelatinized；
3) and, crosslinking agent polyethyleneglycol diacrylate is then added, then add in by sodium hydroxide and acrylic acid in ice-water bath
Enter boric acid monoglyceride mono acrylic ester solution, is uniformly mixed, it is spare；
4) step 3) gains are poured into and is gelatinized object obtained by step 2), heating obtains head product；
5) head product for obtaining step 4) is ground, and is washed several times, until its pH is in neutrality；
6) step 5) gains are washed with absolute ethyl alcohol, is impregnated, filtered, dry, grinding obtains final product, that is, boric acid list is sweet
Ester mono acrylic ester super absorbent resin.
6. method according to claim 5, which is characterized in that low fire heats 4-6min in micro-wave oven described in step 2).
7. method according to claim 5, which is characterized in that the moderate heat in micro-wave oven of heating described in step 4) heats 6-
10min。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810508893.9A CN108752531B (en) | 2018-05-24 | 2018-05-24 | Boric acid monoglyceride monoacrylate super absorbent resin and preparation method thereof |
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|---|---|---|---|
| CN201810508893.9A CN108752531B (en) | 2018-05-24 | 2018-05-24 | Boric acid monoglyceride monoacrylate super absorbent resin and preparation method thereof |
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| CN108752531A true CN108752531A (en) | 2018-11-06 |
| CN108752531B CN108752531B (en) | 2020-06-12 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109942340A (en) * | 2019-05-10 | 2019-06-28 | 中国农业大学 | A kind of slow-release boric fertilizer and preparation method thereof |
| CN110423308A (en) * | 2019-03-12 | 2019-11-08 | 北京市政建设集团有限责任公司 | The preparation method of a kind of super absorbent resin and in the application for reducing dregs moisture content |
| CN110527025A (en) * | 2019-08-28 | 2019-12-03 | 佳力士添加剂（海安）有限公司 | Boric acid monoglyceride mono acrylic ester super absorbent resin |
| CN113943433A (en) * | 2021-11-23 | 2022-01-18 | 万华化学集团股份有限公司 | High-performance acrylic acid water-absorbent resin and preparation method thereof |
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| CN101012290A (en) * | 2007-01-23 | 2007-08-08 | 中国林业科学研究院林产化学工业研究所 | Amphoteric ion high absorbent resin and reversed phase suspension polymerization preparation method thereof |
| JP2008280429A (en) * | 2007-05-10 | 2008-11-20 | Asahi Kasei Fibers Corp | Highly water-absorptive resin and its preparation method |
| CN104449750A (en) * | 2014-11-18 | 2015-03-25 | 成都科衡环保技术有限公司 | Water retention agent and preparation method thereof |
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| CN101012290A (en) * | 2007-01-23 | 2007-08-08 | 中国林业科学研究院林产化学工业研究所 | Amphoteric ion high absorbent resin and reversed phase suspension polymerization preparation method thereof |
| JP2008280429A (en) * | 2007-05-10 | 2008-11-20 | Asahi Kasei Fibers Corp | Highly water-absorptive resin and its preparation method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110423308A (en) * | 2019-03-12 | 2019-11-08 | 北京市政建设集团有限责任公司 | The preparation method of a kind of super absorbent resin and in the application for reducing dregs moisture content |
| CN109942340A (en) * | 2019-05-10 | 2019-06-28 | 中国农业大学 | A kind of slow-release boric fertilizer and preparation method thereof |
| CN110527025A (en) * | 2019-08-28 | 2019-12-03 | 佳力士添加剂（海安）有限公司 | Boric acid monoglyceride mono acrylic ester super absorbent resin |
| CN113943433A (en) * | 2021-11-23 | 2022-01-18 | 万华化学集团股份有限公司 | High-performance acrylic acid water-absorbent resin and preparation method thereof |
| CN113943433B (en) * | 2021-11-23 | 2023-05-30 | 万华化学集团股份有限公司 | High-performance acrylic acid water-absorbent resin and preparation method thereof |
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