CN1546543A - Nanometer-scale olefin-starch mixed polymer fertilizer envelope cementing agent production method - Google Patents
Nanometer-scale olefin-starch mixed polymer fertilizer envelope cementing agent production method Download PDFInfo
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- CN1546543A CN1546543A CNA2003101168571A CN200310116857A CN1546543A CN 1546543 A CN1546543 A CN 1546543A CN A2003101168571 A CNA2003101168571 A CN A2003101168571A CN 200310116857 A CN200310116857 A CN 200310116857A CN 1546543 A CN1546543 A CN 1546543A
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- starch
- vinyl cyanide
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- cementing agent
- hydroxyethyl methylacrylate
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Abstract
The invention relates to one of the slow / controlled release fertilizer integument grouting agent series wherein hydroxyethyl methacrylate, acrylic nitrile and starch are used as raw material, and micro-emulsifying and high-shearing technique is employed to prepare nano level non-homogeneous phase mixed polymer of hydroxyethyl methacrylate, acrylic nitrile and starch.
Description
Nitrogen fertilizer amount maximum in agriculture production, utilization ratio is not high, and influence ecological environment is the focus of plant nutrition and fertilizer science section research all the time.Main in the world nitrogen fertilizers is a urea, so the first-selected kind of slow-release fertilizer is a urea.The U.S. carries out the research of coated carbamide the earliest, and TVA had carried out bag Thio Urea (SCU) lab scale on 1～7kg/h device in 1961, builds up 10t/h SCU demonstration factory in U.S.A in 1978.Carried out the research of bag sulphur Repone K (SCK), bag sulphur diammonium phosphate (SCP) etc. later on again.Japan is the technology of the study U.S. at the research initial stage basically, and nineteen seventies development thermoplastic resin polyolefine coated fertilizer is called for short POCF technology.This coating agent is that (ethalene vinyl accetate EVA) forms with the inorganic fillings talcum powder by the multipolymer of polyolefine (PE)-ethene and vinyl-acetic ester.The formed pellicular water perviousness of PE is very low, and EVA can form the very strong film of water permeate.PE is mixed by different ratios with EVA, just can control the rate of release of nitrogen, add talcum powder and can regulate the temperature factor that the coat fertilizer nutrient discharges.
The length of Envelope type slowly/controlled releasing fertilizer nutrient time of releasing depends on coated fertilizer, though China is obtaining certain progress aspect the coated fertilizer research, but of less types, and be different the vegetative period of Different Crop, existing slowly/controlled releasing fertilizer can't satisfy the needs of Different Crop.Therefore need the multiple different time of development to discharge the coating cementing agent of nutrient.
The slow release fertilizer coating jointing compound of the objective of the invention is to develop that a kind of bonding and film forming properties are all better, fertilizer nutrient time of releasing is moderate, taking into account water retention property.
The present invention adopts microemulsified, the high-shear technology, with liquid hydroxyethyl methylacrylate, vinyl cyanide and shallow lake material is that nano level hydroxyethyl methacrylate second fat-vinyl cyanide-starch that feedstock production forms mixes polymers, is used for the slowly/controlled releasing fertilizer coating cementing agent, the organic-inorganic composite fertilizer adhesive for granulating.
Detailed description of the present invention
Fig. 1 is seen in technical process of the present invention.
The hydroxyethyl methylacrylate emulsion preparation
The liquid hydroxyethyl methylacrylate of selecting chemical plant, Dongguang, Beijing to produce adds 50% tetradecyl benzene sulfonate aqueous solution, and add-on 10%～15% promptly generates water-soluble hydroxyethyl methylacrylate emulsion fully after fully stirring.
The acrylonitrile emulsion preparation
The propylene liquid nitrile of selecting chemical plant, Dongguang, Beijing to produce adds the emulsification of tensio-active agent tween 20, add-on 5%～10%, after stirring, add 50% tetradecyl benzene sulfonate aqueous solution, add-on 5%～10% promptly generates the vinyl cyanide aqueous emulsion after mixing.
The preparation of cross-linking starch solution (seeing the 02125678.0 application for a patent for invention book that the inventor submitted on July 26th, 2002)
(1) starch pasting: starch (wheat, corn, potato) is disperseed (starch concentration is 15%～20%) with cold water, under agitation heat 60～90 ℃ and (look starch kind difference, temperature is variant slightly) gelatinization 1 hour, be cooled to room temperature (20～35 ℃) again.
(2) cross-linking starch: transfer pH to 2.0～3.0 with sulfuric acid, slowly add 40% industrial formol again, add-on is 0.7%～0.8% of an amount of starch, is warming up to about 40 ℃, stirs 30～60min.The cooling back adds ammoniacal liquor and transfers about pH to 7 unnecessary formaldehyde and NH
3React.
Nano level hydroxyethyl methylacrylate-vinyl cyanide-starch mixes the polymers preparation
Hydroxyethyl methylacrylate emulsion, vinyl cyanide emulsion, cross-linking starch solution are put into High shear device (seeing the application for a patent for invention that the inventor submitted on July 2nd, 2002) respectively, volumetric ratio is 1: 1: 2, high-shear 5～10min under 30,000 r/min speed promptly generates nano level hydroxyethyl methylacrylate-vinyl cyanide-starch micelle and mixes polywater solution.
Alkenes compounds-starch mixes polymers and uses
During (1) as slow/controlled release fertilizer coating cementing agent, add entry by 1: 5 (mass ratio), use fully stirring, complete water-soluble back.
(2) when the organic-inorganic compound mixed fertilizer adhesive for granulating, add in the entry in 0.5%～1.0% ratio of fertilizer dry weight, fully stir complete water-soluble back and use.
6 accompanying drawings: Fig. 1 is a process flow sheet of the present invention.
Fig. 2 nano level hydroxyethyl methylacrylate-vinyl cyanide-starch mixes polymers Electronic Speculum figure
Advantage of the present invention
(1) technology is simple, easily applies.
(2) caking property and consolidation strength are taken into account. The nitrogen slow-release time is moderate after being prepared into slow release fertilizer, 50～80 days.
(3) has certain water retention property.
Claims (4)
1. the production technology of nano level alkenes compounds-starch mixed polymer fertilizer coating cementing agent, it is characterized in that adopting microemulsified, the high-shear technology, with liquid hydroxyethyl methylacrylate, vinyl cyanide and shallow lake material is that nano level hydroxyethyl methacrylate second fat-vinyl cyanide-starch that feedstock production forms mixes polymers, be used for the slowly/controlled releasing fertilizer coating cementing agent, the organic-inorganic composite fertilizer adhesive for granulating; This technology is made up of following process, i.e. the emulsification of the emulsification of hydroxyethyl methylacrylate, vinyl cyanide, cross-linking starch preparation, nano level hydroxyethyl methylacrylate-vinyl cyanide-starch mix the polymers preparation.
2. according to the production method of right 1 described alkenes compounds-starch mixed polymer fertilizer coating cementing agent, it is characterized by and in liquid hydroxyethyl methylacrylate, add 50% tetradecyl benzene sulfonate aqueous solution, add-on 10%～15% promptly generates the hydroxyethyl methylacrylate aqueous emulsion after stirring.
3. according to the production method of right 1 described alkenes compounds-starch mixed polymer fertilizer coating cementing agent, it is characterized by and in the propylene liquid nitrile, add the tensio-active agent tween 20, add-on 5%～10%, stir the back and add 50% tetradecyl benzene sulfonate aqueous solution, add-on 5%～10% promptly generates the vinyl cyanide aqueous emulsion after mixing.
4. according to the production method of right 1 described alkenes compounds-starch mixed polymer fertilizer coating cementing agent, it is characterized by in High shear device (seeing 02123522.8 application for a patent for invention that the inventor submitted on July 2nd, 2002), put into the hydroxyethyl methylacrylate aqueous emulsion respectively, the vinyl cyanide aqueous emulsion, cross-linking starch solution (seeing 02125678.0 patent application that the inventor submitted on July 26th, 2002), volumetric ratio is 1: 1: 2, with 30,000 r/min speed, high-shear 5～10min promptly generates nano level hydroxyethyl methylacrylate-vinyl cyanide-starch and mixes polymers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310116857 CN1279074C (en) | 2003-12-01 | 2003-12-01 | Nanometer-scale olefin-starch mixed polymer fertilizer envelope cementing agent production method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310116857 CN1279074C (en) | 2003-12-01 | 2003-12-01 | Nanometer-scale olefin-starch mixed polymer fertilizer envelope cementing agent production method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1546543A true CN1546543A (en) | 2004-11-17 |
| CN1279074C CN1279074C (en) | 2006-10-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200310116857 Expired - Fee Related CN1279074C (en) | 2003-12-01 | 2003-12-01 | Nanometer-scale olefin-starch mixed polymer fertilizer envelope cementing agent production method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103337656A (en) * | 2013-07-05 | 2013-10-02 | 中国科学院青岛生物能源与过程研究所 | Modified biomass lithium ion battery adhesive |
| CN103936510A (en) * | 2014-04-18 | 2014-07-23 | 成都新柯力化工科技有限公司 | Slow release fertilizer suitable for integration of water and fertilizer and preparation method of fertilizer |
-
2003
- 2003-12-01 CN CN 200310116857 patent/CN1279074C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103337656A (en) * | 2013-07-05 | 2013-10-02 | 中国科学院青岛生物能源与过程研究所 | Modified biomass lithium ion battery adhesive |
| CN103337656B (en) * | 2013-07-05 | 2017-03-15 | 中国科学院青岛生物能源与过程研究所 | A kind of modified biomass Li-like ions battery adhesive |
| CN103936510A (en) * | 2014-04-18 | 2014-07-23 | 成都新柯力化工科技有限公司 | Slow release fertilizer suitable for integration of water and fertilizer and preparation method of fertilizer |
| CN103936510B (en) * | 2014-04-18 | 2015-12-09 | 成都新柯力化工科技有限公司 | Slow-release fertilizer of a kind of applicable water-fertilizer integral and preparation method thereof |
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| Publication number | Publication date |
|---|---|
| CN1279074C (en) | 2006-10-11 |
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Granted publication date: 20061011 Termination date: 20131201 |