CN106674430A - Preparation method of degradable agricultural water-retaining agent - Google Patents
Preparation method of degradable agricultural water-retaining agent Download PDFInfo
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- CN106674430A CN106674430A CN201611030296.7A CN201611030296A CN106674430A CN 106674430 A CN106674430 A CN 106674430A CN 201611030296 A CN201611030296 A CN 201611030296A CN 106674430 A CN106674430 A CN 106674430A
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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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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/22—Expanded, porous or hollow particles
- C08K7/24—Expanded, porous or hollow particles inorganic
- C08K7/26—Silicon- containing compounds
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- 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
- C09K17/40—Soil-conditioning materials or soil-stabilising materials containing mixtures of inorganic and organic compounds
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- 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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Abstract
The invention discloses a preparation method of a degradable agricultural water-retaining agent and belongs to the technical field of preparation of water-retaining agents. The preparation method comprises the following steps: firstly collecting carp feces of grass carps fed with pumpkin vines; soaking with a sodium hydroxide solution, filtering, washing a filter cake, conducting reaction with a nitric acid solution, filtering, collecting and drying filter residues; then enabling acrylic acid to conduct reaction with the sodium hydroxide solution, adding the dried filter residues, diatomite and the like for mixing and adding potassium persulfate and the like for reaction; finally drying and crushing to obtain the degradable agricultural water-retaining agent. The preparation method disclosed by the invention has the benefits that celluloses and porous diatomite in the carp feces are utilized for compound grafting of an acrylic acid-acrylamide polymer, the water-absorbing capacity of the water-retaining agent is improved, and meanwhile, moisture can be slowly released for plant absorption, so that the soil water retaining capability is enhanced, and the soil structure is improved; the degradable agricultural water retaining agent can be slowly degraded by microorganisms in soil after use for a period of time and be absorbed by plants as a nutrient substance, so that the problem that after use, a traditional agricultural water retaining agent is hard to degrade to cause soil hardening is effectively solved.
Description
Technical field
The invention discloses a kind of preparation method of degradable agricultural water-retaining agent, belongs to water-retaining agent preparing technical field.
Background technology
Water-retaining agent, is the general designation of the functional high molecule material with high water absorption characteristic, and it is hundreds of that it can absorb own wt
Again to thousand of times of deionized water, the saliferous moisture of decades of times to Radix Achyranthis Bidentatae, and with absorbent function repeatedly, it is expanded to after water suction
Hydrogel, the institute's water holding point that can slowly discharge 80~95% is absorbed for crop.Due to molecular structure crosslinking, molecular network institute
Water suction point can not be extruded with general physical method, therefore with very strong water-retaining property.
Water-retaining agent is increasingly taken seriously in the research of application agriculturally, the synthesis of novel water-retaining agent, is modified, reduces into
Originally, increase function aspects and also carry out research in succession.As water-loss reducer of soil, mix in soil it is a certain amount of after, when in soil
When moisture is too high, it can be stored in large quantities by moisture inspiration water-retaining agent, and during surrounding soil environmental drying, it
Moisture can bit by bit be discharged again, water-retaining agent can form crumb structure in soil, make soil water permeability breathe freely
Property strengthen, reduce soil day and night temperature.
Water-retaining agent is broadly divided into synthesis class and semi-synthetic class from raw material sources.Synthesis class is mainly polyacrylic, gathers
Acrylic amide；Semi-synthetic class product is the polysaccharide such as starch, cellulose and acrylic acid, the graft copolymer of acrylamide.But mesh
Although front this two classes product has certain using effect, but is difficult to be biodegradable, and easily causes soil compaction, and life-time service can shadow
Ring plant growth.Therefore, finding both had had higher water absorption rate, can there is preferable biological degradability again, and cost is more low
The insoluble technical barrier of honest and clean water-retaining agent, always the art.
The content of the invention
Present invention mainly solves technical problem：For not degradable after traditional agricultural water-loss reducer use, cause soil plate
Knot, affects the problem of plant growth, there is provided a kind of with fish excrement and kieselguhr as raw material, with acrylic acid and acrylamide as list
Body, the method that degradable agricultural water-retaining agent is obtained by polyreaction, the present invention is first collected with the Ctenopharyngodon idellus fish after Caulis Cucurbitae feeding
Excrement, with filtering after sodium hydroxide solution immersion, will react with salpeter solution and filters after Cake Wash, collect filter residue and drying, with
Afterwards acrylic acid is dried into filtering residue, kieselguhr etc. with addition after sodium hydroxide solution reaction to mix, adds the reaction such as potassium peroxydisulfate,
Last drying and crushing, obtains final product degradable agricultural water-retaining agent.The present invention is connect using the cellulose and porous composite diatomite in fish excrement
Branch acrylic acid-acrylamide polymer, with very strong water absorbing capacity, water-retaining agent imbibition in use, even if receiving
Pressure is not easy to be extruded, while can slowly discharge moisture supplies plant absorption, strengthens water retention, improves Soil structure, and makes
Can slowly be degraded by Soil Microorganism with after a period of time, be absorbed by plants as nutrient substance, efficiently solve Traditional Agricultural
With not degradable after water-retaining agent use, cause the problem of soil compaction.
In order to solve above-mentioned technical problem, the technical solution adopted in the present invention is：
（1）A length of 20~30cm the Ctenopharyngodon idellus of 8~10 bodies of selection, after 12~16h of Nature enemy, by Ctenopharyngodon idellus input 2m are filled3Clear water
Tank in, then put into 300~500g Caulis Cucurbitaes, until Caulis Cucurbitae is all taken food by Ctenopharyngodon idellus finishing, collect to obtain fish excrement；
（2）The above-mentioned gained fish excrement of 30~50g is weighed, it is 25% sodium hydroxide solution to pour into and fill 200~300mL mass fractions
In beaker, 12~14h is soaked, filtered, collect filter cake, be washed with deionized 3~5 times, then pour the filter cake after washing into Sheng
In having the there-necked flask that 200~300mL mass fractions are 6~8% salpeter solutions, then there-necked flask is placed in into digital display tests the speed constant temperature
In magnetic stirring apparatuss, in temperature be 90~95 DEG C, rotating speed be 300~500r/min under the conditions of, constant temperature stirring reaction 30~
45min, filters, and collects filtering residue, and is washed with deionized until cleaning mixture is in neutrality, then filtering residue is placed in baking oven, Yu Wen
Spend to be dried to constant weight under the conditions of 105~110 DEG C, filtering residue must be dried；
（3）In the there-necked flask of belt stirrer, 8~10g acrylic acid is sequentially added, 18~22mL mass fractions are 20% hydrogen-oxygen
Change sodium solution, under the conditions of rotating speed is for 300~400r/min after 15~20min of stirring reaction, add the above-mentioned gained of 10~12g
Be dried filtering residue, 6~8g acrylamides, 8~10g kieselguhr, 50~80mL deionized waters, in rotating speed be 300~500r/min bars
30~45min of stirring mixing, obtains mixed liquor under part；
（4）The there-necked flask for filling above-mentioned mixed liquor is proceeded in water-bath, bath temperature is adjusted to 70~75 DEG C, speed of agitator
To 400~600r/min, under constant temperature stirring, 0.6~0.8g potassium peroxydisulfates, 0.1~0.3gN, N are sequentially added '-methylene
Base bisacrylamide, continues constant temperature 3~5h of stirring reaction, and question response terminates, and material in there-necked flask is proceeded to into vacuum drying oven,
It is dried to constant weight under the conditions of temperature is for 105~110 DEG C, then dried object is proceeded in pulverizer, 120~180 mesh is crossed after crushing
Sieve, obtains final product degradable agricultural water-retaining agent.
The present invention application process be：When Fructus Citri tangerinae tree seedling is transplanted, first dig kind of a plant hole, subsequently by the backfill mellow soil for digging out and
Obtained degradable agricultural water-retaining agent of the invention is sufficiently mixed uniformly, and water-retaining agent consumption is 15~25g/ strain Fructus Citri tangerinae tree seedling, subsequently
1/5 water-retaining agent mixing earthen backfill is entered into kind of a plant hole, then Fructus Citri tangerinae tree seedling is placed in kind of plant hole, backfill remaining composite soil and upper
Side covers one layer of common soil and fills and leads up kind of a plant hole, finally irrigates hole with water.After testing, the obtained degradable agriculture of the present invention
It is big with water-retaining agent water absorption, Water absorption up to 2000~2500 times, after large quantity of moisture is absorbed, even if be extruded also will not release
Moisture, is centrifuged 10min in the centrifuge of 8000r/min, and percentage of water loss is only 2.2~2.6%, while agricultural water-loss reducer of the present invention
Intensity is higher, can holding capacity up to 450~600g/cm2, imbibition and release can shrink repeatedly, water conservation is for up to 70~90
My god, using can be degradable after 3 years.
The invention has the beneficial effects as follows：
（1）Intensity is high after obtained degradable agricultural water-retaining agent water suction of the invention, good endurance, and water-retaining agent is biodegradable,
Material after degraded is organic nutrient substance, can be absorbed by plant；
（2）Obtained degradable agricultural water-retaining agent of the invention can form " miniature reservoir " in plant root soil, effectively suppression
Moisture evaporation processed, improves soil saturation water content, effectively improves geobiont liquid manure holding capacity, improves water and fertilizer utilization；
（3）Degradable agricultural water-retaining agent of the invention obtained can improved soil structure, improve the breathability of soil, prevent soil
It is hardened, it is that plant creates good growing environment, the neck such as agricultural, forestry soil water-saving moisturizing of nonirrigated farmland band can be widely used in
Domain.
Specific embodiment
First a length of 20~30cm Ctenopharyngodon idellus of 8~10 bodies of selection, after 12~16h of Nature enemy, by Ctenopharyngodon idellus input 2m are filled3
In the tank of clear water, then 300~500g Caulis Cucurbitaes are put into, until Caulis Cucurbitae is all taken food by Ctenopharyngodon idellus finishing, collect to obtain fish excrement；With
After weigh the above-mentioned gained fish excrement of 30~50g, pour the beaker for filling that 200~300mL mass fractions are 25% sodium hydroxide solution into
In, 12~14h is soaked, filter, filter cake is collected, it is washed with deionized 3~5 times, then the filter cake after washing is poured into fill 200
~300mL mass fractions are in the there-necked flask of 6~8% salpeter solutions, then there-necked flask is placed in into the digital display constant temperature magnetic force that tests the speed stirs
It is 90~95 DEG C in temperature in mixing device, rotating speed is constant temperature 30~45min of stirring reaction under the conditions of 300~500r/min, is filtered,
Collect filtering residue, and be washed with deionized until cleaning mixture then is placed in filtering residue in baking oven in neutrality, in temperature be 105~110
It is dried to constant weight under the conditions of DEG C, filtering residue must be dried；Subsequently in the there-necked flask of belt stirrer, 8~10g propylene is sequentially added
Acid, 18~22mL mass fractions be 20% sodium hydroxide solution, in rotating speed be 300~400r/min under the conditions of stirring reaction 15~
After 20min, add the above-mentioned gained of 10~12g and be dried filtering residue, 6~8g acrylamides, 8~10g kieselguhr, 50~80mL go from
Sub- water, is 30~45min of stirring mixing under the conditions of 300~500r/min in rotating speed, obtains mixed liquor；Above-mentioned mixing will finally be filled
The there-necked flask of liquid is proceeded in water-bath, adjusts bath temperature to 70~75 DEG C, speed of agitator to 400~600r/min, in perseverance
Under warm stirring, 0.6~0.8g potassium peroxydisulfates, 0.1~0.3gN, N are sequentially added '-methylene-bisacrylamide, continues permanent
Warm 3~5h of stirring reaction, question response terminates, and material in there-necked flask is proceeded to into vacuum drying oven, in temperature be 105~110 DEG C
Under the conditions of be dried to constant weight, then dried object is proceeded in pulverizer, 120~180 mesh sieves are crossed after crushing, obtain final product degradable agricultural guarantor
Water preparation.
Example 1
First a length of 20cm Ctenopharyngodon idellus of 8 bodies of selection, after Nature enemy 12h, by Ctenopharyngodon idellus input 2m are filled3In the tank of clear water, then
Input 300g Caulis Cucurbitaes, until Caulis Cucurbitae is all taken food by Ctenopharyngodon idellus finishing, collect to obtain fish excrement；Subsequently weigh the above-mentioned gained fishes of 30g
Excrement, pours into and fills in the beaker that 200mL mass fractions are 25% sodium hydroxide solution, soaks 12h, filters, and collects filter cake, spends
Ion water washing 3 times, then the filter cake after washing is poured into fill in the there-necked flask that 200mL mass fractions are 6% salpeter solution,
Again there-necked flask is placed in into digital display to test the speed in constant temperature blender with magnetic force, is 90 DEG C in temperature, rotating speed is perseverance under the conditions of 300r/min
Warm stirring reaction 30min, filters, and collects filtering residue, and is washed with deionized until cleaning mixture is in neutrality, then filtering residue is placed in into baking
In case, it is dried to constant weight under the conditions of temperature is for 105 DEG C, filtering residue must be dried；Subsequently in the there-necked flask of belt stirrer, successively
8g acrylic acid is added, 18mL mass fractions are 20% sodium hydroxide solution, the stirring reaction under the conditions of rotating speed is for 300r/min
After 15min, add the above-mentioned gained of 10g and be dried filtering residue, 6g acrylamides, 8g kieselguhr, 50mL deionized waters are in rotating speed
Stirring mixing 30min, obtains mixed liquor under the conditions of 300r/min；Finally the there-necked flask for filling above-mentioned mixed liquor is proceeded to into water-bath
In, bath temperature is adjusted to 70 DEG C, speed of agitator to 400r/min under constant temperature stirring, sequentially adds 0.6g persulfuric acid
Potassium, 0.1gN, N '-methylene-bisacrylamide, continue constant temperature stirring reaction 3h, question response terminates, and material in there-necked flask is turned
Enter vacuum drying oven, be dried to constant weight under the conditions of temperature is for 105 DEG C, then dried object is proceeded in pulverizer, 120 are crossed after crushing
Mesh sieve, obtains final product degradable agricultural water-retaining agent.
This example operation is easy, when using, when Fructus Citri tangerinae tree seedling is transplanted, first digs kind of a plant hole, subsequently that the backfill dug out is ripe
Soil is sufficiently mixed uniformly with the obtained degradable agricultural water-retaining agent of the present invention, and water-retaining agent consumption is 15g/ strain Fructus Citri tangerinae tree seedling, subsequently
1/5 water-retaining agent mixing earthen backfill is entered into kind of a plant hole, then Fructus Citri tangerinae tree seedling is placed in kind of plant hole, backfill remaining composite soil and upper
Side covers one layer of common soil and fills and leads up kind of a plant hole, finally irrigates hole with water.After testing, the obtained degradable agriculture of the present invention
It is big with water-retaining agent water absorption, Water absorption up to 2000 times, after large quantity of moisture is absorbed, even if being extruded also will not release moisture,
10min is centrifuged in the centrifuge of 8000r/min, percentage of water loss is only 2.2%, while agricultural water-loss reducer intensity of the present invention is higher, can
Holding capacity reaches 450g/cm2, imbibition and release can shrink repeatedly, water conservation for up to 70 days, using can completely after 3 years
Degraded.
Example 2
First a length of 25cm Ctenopharyngodon idellus of 9 bodies of selection, after Nature enemy 14h, by Ctenopharyngodon idellus input 2m are filled3In the tank of clear water, then
Input 400g Caulis Cucurbitaes, until Caulis Cucurbitae is all taken food by Ctenopharyngodon idellus finishing, collect to obtain fish excrement；Subsequently weigh the above-mentioned gained fishes of 40g
Excrement, pours into and fills in the beaker that 250mL mass fractions are 25% sodium hydroxide solution, soaks 13h, filters, and collects filter cake, spends
Ion water washing 4 times, then the filter cake after washing is poured into fill in the there-necked flask that 250mL mass fractions are 7% salpeter solution,
Again there-necked flask is placed in into digital display to test the speed in constant temperature blender with magnetic force, is 93 DEG C in temperature, rotating speed is perseverance under the conditions of 400r/min
Warm stirring reaction 37min, filters, and collects filtering residue, and is washed with deionized until cleaning mixture is in neutrality, then filtering residue is placed in into baking
In case, it is dried to constant weight under the conditions of temperature is for 108 DEG C, filtering residue must be dried；Subsequently in the there-necked flask of belt stirrer, successively
9g acrylic acid is added, 20mL mass fractions are 20% sodium hydroxide solution, the stirring reaction under the conditions of rotating speed is for 350r/min
After 18min, add the above-mentioned gained of 11g and be dried filtering residue, 7g acrylamides, 9g kieselguhr, 65mL deionized waters are in rotating speed
Stirring mixing 37min, obtains mixed liquor under the conditions of 400r/min；Finally the there-necked flask for filling above-mentioned mixed liquor is proceeded to into water-bath
In, bath temperature is adjusted to 73 DEG C, speed of agitator to 500r/min under constant temperature stirring, sequentially adds 0.7g persulfuric acid
Potassium, 0.2gN, N '-methylene-bisacrylamide, continue constant temperature stirring reaction 4h, question response terminates, and material in there-necked flask is turned
Enter vacuum drying oven, be dried to constant weight under the conditions of temperature is for 108 DEG C, then dried object is proceeded in pulverizer, 150 are crossed after crushing
Mesh sieve, obtains final product degradable agricultural water-retaining agent.
This example operation is easy, when using, when Fructus Citri tangerinae tree seedling is transplanted, first digs kind of a plant hole, subsequently that the backfill dug out is ripe
Soil is sufficiently mixed uniformly with the obtained degradable agricultural water-retaining agent of the present invention, and water-retaining agent consumption is 20g/ strain Fructus Citri tangerinae tree seedling, subsequently
1/5 water-retaining agent mixing earthen backfill is entered into kind of a plant hole, then Fructus Citri tangerinae tree seedling is placed in kind of plant hole, backfill remaining composite soil and upper
Side covers one layer of common soil and fills and leads up kind of a plant hole, finally irrigates hole with water.After testing, the obtained degradable agriculture of the present invention
It is big with water-retaining agent water absorption, Water absorption up to 2250 times, after large quantity of moisture is absorbed, even if being extruded also will not release moisture,
10min is centrifuged in the centrifuge of 8000r/min, percentage of water loss is only 2.4%, while agricultural water-loss reducer intensity of the present invention is higher, can
Holding capacity reaches 530g/cm2, imbibition and release can shrink repeatedly, water conservation for up to 80 days, using can completely after 3 years
Degraded.
Example 3
First a length of 30cm Ctenopharyngodon idellus of 10 bodies of selection, after Nature enemy 16h, by Ctenopharyngodon idellus input 2m are filled3In the tank of clear water, then
Input 500g Caulis Cucurbitaes, until Caulis Cucurbitae is all taken food by Ctenopharyngodon idellus finishing, collect to obtain fish excrement；Subsequently weigh the above-mentioned gained fishes of 50g
Excrement, pours into and fills in the beaker that 300mL mass fractions are 25% sodium hydroxide solution, soaks 14h, filters, and collects filter cake, spends
Ion water washing 5 times, then the filter cake after washing is poured into fill in the there-necked flask that 300mL mass fractions are 8% salpeter solution,
Again there-necked flask is placed in into digital display to test the speed in constant temperature blender with magnetic force, is 95 DEG C in temperature, rotating speed is perseverance under the conditions of 500r/min
Warm stirring reaction 45min, filters, and collects filtering residue, and is washed with deionized until cleaning mixture is in neutrality, then filtering residue is placed in into baking
In case, it is dried to constant weight under the conditions of temperature is for 110 DEG C, filtering residue must be dried；Subsequently in the there-necked flask of belt stirrer, successively
10g acrylic acid is added, 22mL mass fractions are 20% sodium hydroxide solution, the stirring reaction under the conditions of rotating speed is for 400r/min
After 20min, add the above-mentioned gained of 12g and be dried filtering residue, 8g acrylamides, 10g kieselguhr, 80mL deionized waters are in rotating speed
Stirring mixing 45min, obtains mixed liquor under the conditions of 500r/min；Finally the there-necked flask for filling above-mentioned mixed liquor is proceeded to into water-bath
In, bath temperature is adjusted to 75 DEG C, speed of agitator to 600r/min under constant temperature stirring, sequentially adds 0.8g persulfuric acid
Potassium, 0.3gN, N '-methylene-bisacrylamide, continue constant temperature stirring reaction 5h, question response terminates, and material in there-necked flask is turned
Enter vacuum drying oven, be dried to constant weight under the conditions of temperature is for 110 DEG C, then dried object is proceeded in pulverizer, 180 are crossed after crushing
Mesh sieve, obtains final product degradable agricultural water-retaining agent.
This example operation is easy, when using, when Fructus Citri tangerinae tree seedling is transplanted, first digs kind of a plant hole, subsequently that the backfill dug out is ripe
Soil is sufficiently mixed uniformly with the obtained degradable agricultural water-retaining agent of the present invention, and water-retaining agent consumption is 25g/ strain Fructus Citri tangerinae tree seedling, subsequently
1/5 water-retaining agent mixing earthen backfill is entered into kind of a plant hole, then Fructus Citri tangerinae tree seedling is placed in kind of plant hole, backfill remaining composite soil and upper
Side covers one layer of common soil and fills and leads up kind of a plant hole, finally irrigates hole with water.After testing, the obtained degradable agriculture of the present invention
It is big with water-retaining agent water absorption, Water absorption up to 2500 times, after large quantity of moisture is absorbed, even if being extruded also will not release moisture,
10min is centrifuged in the centrifuge of 8000r/min, percentage of water loss is only 2.6%, while agricultural water-loss reducer intensity of the present invention is higher, can
Holding capacity reaches 600g/cm2, imbibition and release can shrink repeatedly, water conservation for up to 90 days, using can completely after 3 years
Degraded.
Claims (1)
1. a kind of preparation method of degradable agricultural water-retaining agent, it is characterised in that concrete preparation process is：
（1）A length of 20~30cm the Ctenopharyngodon idellus of 8~10 bodies of selection, after 12~16h of Nature enemy, by Ctenopharyngodon idellus input 2m are filled3Clear water
In tank, then 300~500g Caulis Cucurbitaes are put into, until Caulis Cucurbitae is all taken food by Ctenopharyngodon idellus finishing, collect to obtain fish excrement；
（2）The above-mentioned gained fish excrement of 30~50g is weighed, it is 25% sodium hydroxide solution to pour into and fill 200~300mL mass fractions
In beaker, 12~14h is soaked, filtered, collect filter cake, be washed with deionized 3~5 times, then pour the filter cake after washing into Sheng
In having the there-necked flask that 200~300mL mass fractions are 6~8% salpeter solutions, then there-necked flask is placed in into digital display tests the speed constant temperature
In magnetic stirring apparatuss, in temperature be 90~95 DEG C, rotating speed be 300~500r/min under the conditions of, constant temperature stirring reaction 30~
45min, filters, and collects filtering residue, and is washed with deionized until cleaning mixture is in neutrality, then filtering residue is placed in baking oven, Yu Wen
Spend to be dried to constant weight under the conditions of 105~110 DEG C, filtering residue must be dried；
（3）In the there-necked flask of belt stirrer, 8~10g acrylic acid is sequentially added, 18~22mL mass fractions are 20% hydrogen-oxygen
Change sodium solution, under the conditions of rotating speed is for 300~400r/min after 15~20min of stirring reaction, add the above-mentioned gained of 10~12g
Be dried filtering residue, 6~8g acrylamides, 8~10g kieselguhr, 50~80mL deionized waters, in rotating speed be 300~500r/min bars
30~45min of stirring mixing, obtains mixed liquor under part；
（4）The there-necked flask for filling above-mentioned mixed liquor is proceeded in water-bath, bath temperature is adjusted to 70~75 DEG C, speed of agitator
To 400~600r/min, under constant temperature stirring, 0.6~0.8g potassium peroxydisulfates, 0.1~0.3gN, N are sequentially added '-methylene
Base bisacrylamide, continues constant temperature 3~5h of stirring reaction, and question response terminates, and material in there-necked flask is proceeded to into vacuum drying oven,
It is dried to constant weight under the conditions of temperature is for 105~110 DEG C, then dried object is proceeded in pulverizer, 120~180 mesh is crossed after crushing
Sieve, obtains final product degradable agricultural water-retaining agent.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108586654A (en) * | 2018-04-16 | 2018-09-28 | 柳州市柳晶科技股份有限公司 | A method of preparing water-retaining agent using industrial slag |
| CN115119678A (en) * | 2022-06-27 | 2022-09-30 | 榆林市林业科学研究所 | Pinus sylvestris forestation method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102372892A (en) * | 2010-08-17 | 2012-03-14 | 上海众伟生化有限公司 | Starch grafting acrylic acid compound water-retaining agent and production method thereof |
| CN102617963A (en) * | 2012-03-26 | 2012-08-01 | 朱春来 | Preparation method for agricultural nutrient superabsorbent resin |
| CN102617815A (en) * | 2012-03-23 | 2012-08-01 | 西北师范大学 | Natural nutritional high-water-absorptivity resin and preparation method thereof |
| CN104418986A (en) * | 2013-08-30 | 2015-03-18 | 凯姆勒吸水材料（天津）有限公司 | Preparation method of nutrition type water-retaining agent |
-
2016
- 2016-11-22 CN CN201611030296.7A patent/CN106674430A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102372892A (en) * | 2010-08-17 | 2012-03-14 | 上海众伟生化有限公司 | Starch grafting acrylic acid compound water-retaining agent and production method thereof |
| CN102617815A (en) * | 2012-03-23 | 2012-08-01 | 西北师范大学 | Natural nutritional high-water-absorptivity resin and preparation method thereof |
| CN102617963A (en) * | 2012-03-26 | 2012-08-01 | 朱春来 | Preparation method for agricultural nutrient superabsorbent resin |
| CN104418986A (en) * | 2013-08-30 | 2015-03-18 | 凯姆勒吸水材料（天津）有限公司 | Preparation method of nutrition type water-retaining agent |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108586654A (en) * | 2018-04-16 | 2018-09-28 | 柳州市柳晶科技股份有限公司 | A method of preparing water-retaining agent using industrial slag |
| CN115119678A (en) * | 2022-06-27 | 2022-09-30 | 榆林市林业科学研究所 | Pinus sylvestris forestation method |
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Application publication date: 20170517 |