CN106748100A - A kind of low cost, the environmentally friendly film-coated and slow release fertilizer with water retaining function and preparation method thereof - Google Patents
A kind of low cost, the environmentally friendly film-coated and slow release fertilizer with water retaining function and preparation method thereof Download PDFInfo
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- CN106748100A CN106748100A CN201611157342.XA CN201611157342A CN106748100A CN 106748100 A CN106748100 A CN 106748100A CN 201611157342 A CN201611157342 A CN 201611157342A CN 106748100 A CN106748100 A CN 106748100A
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- water
- fertilizer
- slow release
- environmentally friendly
- coated
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G5/00—Fertilisers characterised by their form
- C05G5/30—Layered or coated, e.g. dust-preventing coatings
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B7/00—Fertilisers based essentially on alkali or ammonium orthophosphates
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Fertilizers (AREA)
Abstract
The invention discloses a kind of low cost, the environmentally friendly film-coated and slow release fertilizer with water retaining function and preparation method thereof, it is characterised in that be made up of the raw material of following weight portion：Guar gum 20 30, acrylic acid 10 20, sodium alginate soln 20 30, borax soln 20 30, ammonium persulfate 12, N, N, methylene-bisacrylamide 36, attapulgite 23, polyvinyl alcohol 15 25, starch 35, urea 25 35, potassium hydrogen phosphate 8 15, distilled water 50 100；Be added to water-loss reducer in crosslinked fluid by the present invention, is then sprayed on again on fertilizer kernel, overcomes the caducous defect of water-loss reducer existed when water-loss reducer directly being sticked into fertilizer kernel, makes the Water-saving effect of fertilizer notable；Crosslinked fluid can also reach the purpose of enhancing fertilizer water resistance simultaneously；With guar gum as the inner investment of fertilizer, the cost of fertilizer is reduced, and with preferable slow release and water-retaining property.
Description
Technical field
The present invention relates to a kind of slow-release fertilizer, and in particular to a kind of low cost, the environmentally friendly coating with water retaining function
The preparation method of slow-release fertilizer.
Technical background
It with granular chemical fertilizer is heart core that coating slowly/controlled releasing fertilizer is, surface coats one layer of inorganic matter or organic of slightly water-soluble
High molecular polymer, the material can change the release characteristics of chemical fertilizer nutrient, extension or control fertilizer nutrient release, make its nutrient
The new-type fertilizer that release is mutually coordinated with the regulation of fertilizer requirement of crop.The development of this kind of fertilizer is raising utilization rate of fertilizer, mitigates environment
The modern agriculture that pollution, development save labor proposes new thinking.Therefore, fertilizer science, agrology, environmental science, chemistry etc.
The researcher of subject sets foot in the field one after another, and achieves large quantities of valuable achievements in research.At present, oneself applies and just grinds
The slow/controlled release material studied carefully can be divided into inorganic (ore deposit) thing powder, organic high molecular polymer, environmentally friendly material (organic-inorganic
Compound) three major types.
Ni Bo stands in its Master dissertation《The preparation of environmental friend type multifunction sustained-controll-release fertiliser and performance study》
In, a kind of the fertilizer of retaining water and releasing nutrients slowly is prepared for using sodium alginate and polyacrylic acid, but it is easy to fall off also to there is water-loss reducer, and coating is prevented
It is aqueous to have much room for improvement, and slow release it is not good enough the problems such as.
The content of the invention
Thinking based on more than, difficult for drop-off the invention provides a kind of water-loss reducer, coating good waterproof performance, slow release effect is excellent
Good environmentally friendly film-coated and slow release fertilizer, and preparation method thereof.
The technical problems to be solved by the invention are realized using following technical scheme：
A kind of low cost, the environmentally friendly film-coated and slow release fertilizer with water retaining function, it is characterised in that be by following weight portion
Raw material is made：
Guar gum 20-30, acrylic acid 10-20, sodium alginate soln 20-30, borax soln 20-30, ammonium persulfate 1-2, N,
N ,-methylene-bisacrylamide 3-6, attapulgite 2-3, polyvinyl alcohol 15-25, starch 3-5, urea 25-35, potassium hydrogen phosphate 8-
15, distilled water 50-100；
The sodium alginate soln mass fraction is 5%-30%, and calcium chloride solution mass fraction is 7%-15%, borax soln quality
Fraction is 4%-10%'s.
The preparation method of a kind of described low cost, the environmentally friendly film-coated and slow release fertilizer with water retaining function, its feature
It is to be made up of following steps：
A. by acrylic acid, ammonium persulfate and N, N ,-methylene-bisacrylamide adds distilled water to be made mixed solution, is added dropwise to
In sodium alginate soln, lasting stirring；Logical nitrogen is after 15 minutes, the water-bath 2-5h under the conditions of 60-80 DEG C；Reaction terminates
Afterwards, water-loss reducer is obtained after filtering, dry, crushing, sieving；
B. by polyvinyl alcohol addition distilled water, stirring is heated to 80-95 DEG C, continues stirring until it and is completely dissolved, and stops adding
Heat, adds gelatinized starch, stirring 20-40min to obtain polyvinyl alcohol-starch crosslinked fluid；Then to 3-5 parts of urine of addition in crosslinked fluid
Element, step a gained water-loss reducers, sealing are vibrated in water-bath at 40-60 DEG C, are cooled to room temperature, obtain urea-modified and contain water-loss reducer
Crosslinked fluid；
C. remaining urea, attapulgite, potassium hydrogen phosphate are added in guar gum powder, are placed in the disk of rotation, make Guar
Rubber powder end is wrapped in fertilizer outer layer, and sprays into borax soln guar gum is crosslinked, and the guar gum after crosslinking is used as fertilizer
Internal layer coating；
D. step c gained fertilizer kernels are put into the rotary drum of rotation, step b gained crosslinked fluids are sprayed into spray gun for paint, in 60-
Heating makes solvent volatilize at 80 DEG C, and product is obtained final product after drying.
The preparation method of a kind of described low cost, the environmentally friendly film-coated and slow release fertilizer with water retaining function, its feature
It is that the preparation method of the gelatinized starch is that starch is added in distilled water, under the conditions of 60-80 DEG C, stirring in water bath is obtained
Arrive.
The beneficial effects of the invention are as follows：The macromolecular skeleton of sodium alginate is grafted to by polypropylene by graft polymerization reaction
On acid molecule chain, a kind of agricultural water-loss reducer material of polysaccharide-based is prepared into, solves polyacrylic water-loss reducer degradability difference
Problem；With urea come modified polyvinylalcohol-starch crosslinked fluid, two amino contained using urea, the hydroxyl contained with crosslinked fluid
Base chemically reacts, and generates cyclic organic compounds, can reach and shelter light base, improves the purpose of membrane material water resistance；Will
Water-loss reducer is added in crosslinked fluid, is then sprayed on again on fertilizer kernel, overcomes and water-loss reducer directly is sticked into fertilizer kernel
When the caducous defect of water-loss reducer that exists, make the Water-saving effect of fertilizer notable；Crosslinked fluid can also reach enhancing fertilizer simultaneously
The purpose of water resistance, while easily biological-degradable, environment-friendly；With guar gum as the inner investment of fertilizer, the cost of fertilizer is reduced,
And with preferable slow release and water-retaining property.
Specific embodiment
Specific embodiment of the invention is further described with reference to embodiment.
Embodiment
A kind of low cost, the environmentally friendly film-coated and slow release fertilizer with water retaining function, it is characterised in that be by following weight
The raw material of part is made：
Guar gum 30, acrylic acid 20, sodium alginate soln 30, borax soln 30, ammonium persulfate 2, N, N ,-methylene bisacrylamide
Acid amides 6, attapulgite 3, polyvinyl alcohol 25, starch 5, urea 35, potassium hydrogen phosphate 15, distilled water 100；
The sodium alginate soln mass fraction is 5%-30%, and calcium chloride solution mass fraction is 7%-15%, borax soln quality
Fraction is 4%-10%'s.
The preparation method of a kind of described low cost, the environmentally friendly film-coated and slow release fertilizer with water retaining function, its feature
It is to be made up of following steps：
A. by acrylic acid, ammonium persulfate and N, N ,-methylene-bisacrylamide adds distilled water to be made mixed solution, is added dropwise to
In sodium alginate soln, lasting stirring；Logical nitrogen is after 15 minutes, the water-bath 2-5h under the conditions of 60-80 DEG C；Reaction terminates
Afterwards, water-loss reducer is obtained after filtering, dry, crushing, sieving；
B. by polyvinyl alcohol addition distilled water, stirring is heated to 80-95 DEG C, continues stirring until it and is completely dissolved, and stops adding
Heat, adds gelatinized starch, stirring 20-40min to obtain polyvinyl alcohol-starch crosslinked fluid；Then to 3-5 parts of urine of addition in crosslinked fluid
Element, step a gained water-loss reducers, sealing are vibrated in water-bath at 40-60 DEG C, are cooled to room temperature, obtain urea-modified and contain water-loss reducer
Crosslinked fluid；
C. remaining urea, attapulgite, potassium hydrogen phosphate are added in guar gum powder, are placed in the disk of rotation, make Guar
Rubber powder end is wrapped in fertilizer outer layer, and sprays into borax soln guar gum is crosslinked, and the guar gum after crosslinking is used as fertilizer
Internal layer coating；
D. step c gained fertilizer kernels are put into the rotary drum of rotation, step b gained crosslinked fluids are sprayed into spray gun for paint, in 60-
Heating makes solvent volatilize at 80 DEG C, and product is obtained final product after drying.
The preparation method of a kind of described low cost, the environmentally friendly film-coated and slow release fertilizer with water retaining function, its feature
It is that the preparation method of the gelatinized starch is that starch is added in distilled water, under the conditions of 60-80 DEG C, stirring in water bath is obtained
Arrive.
Properties of product test data of the invention：When rate of fertilizer is 1%, soil maximum specific retention >=47.5%；Nutrition
Release percentage≤99%, 81.3%, 91.1% in elemental nitrogen, phosphorus and potassium 30 days in soil.
Claims (3)
1. a kind of low cost, the environmentally friendly film-coated and slow release fertilizer with water retaining function, it is characterised in that be by following weight portion
Raw material be made：
Guar gum 20-30, acrylic acid 10-20, sodium alginate soln 20-30, borax soln 20-30, ammonium persulfate 1-2, N,
N ,-methylene-bisacrylamide 3-6, attapulgite 2-3, polyvinyl alcohol 15-25, starch 3-5, urea 25-35, potassium hydrogen phosphate 8-
15, distilled water 50-100；
The sodium alginate soln mass fraction is 5%-30%, and calcium chloride solution mass fraction is 7%-15%, borax soln quality
Fraction is 4%-10%'s.
2. a kind of low cost according to claim 1, the preparation of the environmentally friendly film-coated and slow release fertilizer with water retaining function
Method, it is characterised in that be made up of following steps：
A. by acrylic acid, ammonium persulfate and N, N ,-methylene-bisacrylamide adds distilled water to be made mixed solution, is added dropwise to
In sodium alginate soln, lasting stirring；Logical nitrogen is after 15 minutes, the water-bath 2-5h under the conditions of 60-80 DEG C；Reaction terminates
Afterwards, water-loss reducer is obtained after filtering, dry, crushing, sieving；
B. by polyvinyl alcohol addition distilled water, stirring is heated to 80-95 DEG C, continues stirring until it and is completely dissolved, and stops adding
Heat, adds gelatinized starch, stirring 20-40min to obtain polyvinyl alcohol-starch crosslinked fluid；Then to 3-5 parts of urine of addition in crosslinked fluid
Element, step a gained water-loss reducers, sealing are vibrated in water-bath at 40-60 DEG C, are cooled to room temperature, obtain urea-modified and contain water-loss reducer
Crosslinked fluid；
C. remaining urea, attapulgite, potassium hydrogen phosphate are added in guar gum powder, are placed in the disk of rotation, make Guar
Rubber powder end is wrapped in fertilizer outer layer, and sprays into borax soln guar gum is crosslinked, and the guar gum after crosslinking is used as fertilizer
Internal layer coating；
D. step c gained fertilizer kernels are put into the rotary drum of rotation, step b gained crosslinked fluids are sprayed into spray gun for paint, in 60-
Heating makes solvent volatilize at 80 DEG C, and product is obtained final product after drying.
3. a kind of low cost according to claim 2, the preparation of the environmentally friendly film-coated and slow release fertilizer with water retaining function
Method, it is characterised in that the preparation method of the gelatinized starch is that starch is added in distilled water, under the conditions of 60-80 DEG C,
Stirring in water bath is obtained.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611157342.XA CN106748100A (en) | 2016-12-15 | 2016-12-15 | A kind of low cost, the environmentally friendly film-coated and slow release fertilizer with water retaining function and preparation method thereof |
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| CN201611157342.XA CN106748100A (en) | 2016-12-15 | 2016-12-15 | A kind of low cost, the environmentally friendly film-coated and slow release fertilizer with water retaining function and preparation method thereof |
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| CN106748100A true CN106748100A (en) | 2017-05-31 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107513139A (en) * | 2017-08-21 | 2017-12-26 | 安徽旺旺禽业科技有限公司 | A kind of straw biomass base water-loss reducer and preparation method thereof |
| CN108147926A (en) * | 2018-02-10 | 2018-06-12 | 广西金茂生物化工有限公司 | A kind of Slow release organic fertilizer prepared using manioc waste and preparation method thereof |
| CN109231877A (en) * | 2018-10-29 | 2019-01-18 | 上海久鼎绿化混凝土有限公司 | A kind of green concrete additive |
| CN110240517A (en) * | 2019-06-21 | 2019-09-17 | 莫佑纯 | A kind of organic fertilizer and preparation method thereof with long-acting slow-release effect |
| CN110272314A (en) * | 2019-06-18 | 2019-09-24 | 中国农业科学院农业环境与可持续发展研究所 | A method of preparing cladded type stalk fibre based water-holding slow-release fertilizer |
| CN111362752A (en) * | 2020-04-27 | 2020-07-03 | 仲恺农业工程学院 | Prepolymerization liquid for preparing water-retaining coated urea and method for preparing water-retaining coated urea by using prepolymerization liquid |
| CN114009308A (en) * | 2021-11-16 | 2022-02-08 | 淮安大华生物科技有限公司 | Vegetable seedling raising substrate and preparation method thereof |
| CN114409473A (en) * | 2022-01-28 | 2022-04-29 | 青岛首科新材料有限公司 | Nutritional water-retaining agent and preparation method thereof |
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| CN102020517A (en) * | 2010-08-25 | 2011-04-20 | 国际竹藤网络中心 | Slow release fertilizer and preparation method thereof |
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| CN102020517A (en) * | 2010-08-25 | 2011-04-20 | 国际竹藤网络中心 | Slow release fertilizer and preparation method thereof |
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| CN105348004A (en) * | 2015-11-17 | 2016-02-24 | 宁国市汉唐盛世农林开发有限公司 | Humic-acid-containing modified-starch-coated slow-release fertilizer and preparation method thereof |
| CN105503400A (en) * | 2015-12-24 | 2016-04-20 | 张莘蔓 | Preparation method and application of guar-gum-containing coating material |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107513139A (en) * | 2017-08-21 | 2017-12-26 | 安徽旺旺禽业科技有限公司 | A kind of straw biomass base water-loss reducer and preparation method thereof |
| CN108147926A (en) * | 2018-02-10 | 2018-06-12 | 广西金茂生物化工有限公司 | A kind of Slow release organic fertilizer prepared using manioc waste and preparation method thereof |
| CN109231877A (en) * | 2018-10-29 | 2019-01-18 | 上海久鼎绿化混凝土有限公司 | A kind of green concrete additive |
| CN110272314A (en) * | 2019-06-18 | 2019-09-24 | 中国农业科学院农业环境与可持续发展研究所 | A method of preparing cladded type stalk fibre based water-holding slow-release fertilizer |
| CN110240517A (en) * | 2019-06-21 | 2019-09-17 | 莫佑纯 | A kind of organic fertilizer and preparation method thereof with long-acting slow-release effect |
| CN111362752A (en) * | 2020-04-27 | 2020-07-03 | 仲恺农业工程学院 | Prepolymerization liquid for preparing water-retaining coated urea and method for preparing water-retaining coated urea by using prepolymerization liquid |
| CN114009308A (en) * | 2021-11-16 | 2022-02-08 | 淮安大华生物科技有限公司 | Vegetable seedling raising substrate and preparation method thereof |
| CN114409473A (en) * | 2022-01-28 | 2022-04-29 | 青岛首科新材料有限公司 | Nutritional water-retaining agent and preparation method thereof |
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