CN105131760B - Drip irrigation below the surface band water conservation coating and preparation method - Google Patents
Drip irrigation below the surface band water conservation coating and preparation method Download PDFInfo
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- CN105131760B CN105131760B CN201510538055.2A CN201510538055A CN105131760B CN 105131760 B CN105131760 B CN 105131760B CN 201510538055 A CN201510538055 A CN 201510538055A CN 105131760 B CN105131760 B CN 105131760B
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Abstract
A kind of drip irrigation below the surface band water conservation coating, each raw materials by weight is：Acrylic compounds 30 70%, natural macromolecular class 30 70%.In preparation method of the drip irrigation below the surface with water conservation coating of the present invention, by adding the lotion applicator prepared of ultraviolet initiator benzophenone in acrylic acid esters co-polymer solution in drip irrigation belt surface, the coating material that the drip irrigation belt surface produced with polythene material is connected with chemical combination key-shaped formula can be formed under certain ultraviolet light conditions irradiation, can effectively prevent drip irrigation zone drip after soil moisture rapidly loss.The present invention reaches water suction, water retention property by the natural water conservation macromolecular chitosan of introducing crosslinked, by introducing the azido that photocurable is crosslinked on chitosan, using ultraviolet light irradiation cross-linking method, production technology is simplified, coating is completed in the high speed manufacturing processes of drip irrigation zone and solidification crosslinking is used.
Description
Technical field
The present invention relates to the technical field of irrigation soils regulation, specifically a kind of drip irrigation below the surface band water conservation coating and system
Preparation Method.
Background technology
With the reduction year by year of the increasingly serious and green vegetation of environmental pollution, sternness is proposed to environment for human survival
Test, the particularly field such as agricultural production and urban afforestation, its soil moisture is easy to run off, and causes soil block, soil
The problems such as desertification, therefore how rainwater or watering pours water to be absorbed and kept rapidly in soil, it is not permeable to lose, and then ensure rhizosphere
Scope moisture content is sufficient, slow release is utilized for plant turns into important research direction.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of drip irrigation below the surface band water conservation coating and preparation method.
The present invention is adopted the technical scheme that to solve technical problem present in known technology:
The drip irrigation below the surface band water conservation coating of the present invention, each raw materials by weight is：It is acrylic compounds 30-70%, natural
Macromolecular class 30-70%.
The present invention can also use following technical measures：
Described acrylic compounds are acrylic copolymer, and natural macromolecular class is the hydroxypropyl chitosan of Photocrosslinkable.
The coating is crosslinked through ultraviolet radiation after each component mixture by weight spraying and obtained.
Preparation method of the drip irrigation below the surface with water conservation coating of the present invention, by the acrylic acid and acrylic acid of each 100 parts by weight
Hydroxyl ethyl ester is mixed, and adds the initiator azodiisobutyronitrile of 2-5 parts by weight, is polymerize under conditions of temperature is 60 ~ 65 DEG C anti-
The acrylate copolymer of hydroxyl is carried on deserved side chain；Aforesaid propylene acid ester copolymer and benzophenone are pressed 1：0.02-
0.04 weight obtains latex A than mixing；The hydroxypropyl chitosan of the Photocrosslinkable of 100 parts by weight is dissolved in water, solution is obtained
B；Latex A and solution B are sprayed on to the surface of drip irrigation zone, latex A accounts for percentage by weight for 30-70%, and solution B accounts for weight percent
Than for 30-70%；Lead to the surface after spraying after nitrogen through ultraviolet radiation crosslinking i.e. acquisition water conservation coating.
Take the chitosan of equivalent to add sodium hydroxide solution alkalization, react freeze overnight with aqueous isopropanol, add epoxy
Propane is in the presence of catalyst TMAH, 60 DEG C of reaction 10h, is precipitated in ethanol, accessory substance is removed in dialysis, is freezed i.e.
For hydroxypropyl chitosan；EDC and 4- phenylazides are added in the DMSO solution that the hydroxypropyl chitosan for taking equivalent to prepare is dissolved in
Formic acid reacts dialysis in 75h, deionized water and removes accessory substance under the conditions of being stirred at room temperature, the lyophilized hydroxypropyl base enclosure for producing Photocrosslinkable
Glycan.
The present invention has the advantages and positive effects of:
In the drip irrigation below the surface band water conservation coating and preparation method of the present invention, a kind of acrylic acid esters co-polymer is prepared for molten
Liquid, the lotion applicator that addition ultraviolet initiator benzophenone is prepared in this solution is in drip irrigation belt surface, in certain purple
Outer optical condition irradiation is lower can to form the coating material that the drip irrigation belt surface produced with polythene material is connected with chemical combination key-shaped formula,
Can effectively prevent drip irrigation zone drip after soil moisture rapidly loss.The natural water conservation macromolecular that the present invention passes through introducing crosslinked
Chitosan reaches water suction, water retention property, by introducing the azido that photocurable is crosslinked on chitosan, using ultraviolet light irradiation
Cross-linking method, simplifies production technology, and coating is completed in the high speed manufacturing processes of drip irrigation zone and solidification crosslinking is used.
Embodiment
Technical scheme is specifically described with reference to embodiments.
Embodiment 1：
（1）Take after the acrylic acid of 100 parts by weight mixes with the hydroxy-ethyl acrylate of 100 parts by weight, add drawing for 2 parts by weight
Agent azodiisobutyronitrile is sent out, polymerisation obtains the acrylate with great amount of hydroxy group on side chain and is total under conditions of temperature is 65 DEG C
Polymers, latex A is mixed to obtain by 100 parts this acrylate copolymer with the benzophenone of 3 parts by weight；
（2）Take the hydroxypropyl chitosan material of 100 parts of Photocrosslinkable soluble in water, obtain solution B；
（3）It is to be sprayed at drop than the application method for 70% latex A, the water conservation coating of 30% solution B to constitute weight
Belt surface is filled, is led to after nitrogen 20min through ultraviolet radiation crosslinking 10min.
Under same soil environment, the drip irrigation zone with water conservation external coating is crosslinked by ultraviolet radiation in the laying present invention
After being poured water with ordinary drip irrigation tape, same irrigation quantity is after 24 hours, at the laying height 5cm of drip irrigation zone, soil moisture content
Respectively 30% and 10%.From soil moisture content comparing result, the drop with water conservation external coating is crosslinked by ultraviolet radiation
Band is filled because the interpenetrating network of its external coating can water swelling, the rapidly loss of reduction moisture.
Embodiment 2：
（1）Take after the acrylic acid of 100 parts by weight mixes with the hydroxy-ethyl acrylate of 100 parts by weight, add drawing for 3 parts by weight
Agent azodiisobutyronitrile is sent out, polymerisation obtains the acrylate with great amount of hydroxy group on side chain and is total under conditions of temperature is 65 DEG C
Polymers, latex A is mixed to obtain by 100 parts this acrylate copolymer with the benzophenone of 4 parts by weight；
（3）Take the hydroxypropyl chitosan material of 100 parts of Photocrosslinkable soluble in water, obtain solution B；
（3）It is to be sprayed at drop than the application method for 60% latex A, the water conservation coating of 40% solution B to constitute weight
Belt surface is filled, is led to after nitrogen 20min through ultraviolet radiation crosslinking 10min.Embodiment 3：
（1）Take after the acrylic acid of 100 parts by weight mixes with the hydroxy-ethyl acrylate of 100 parts by weight, add drawing for 4 parts by weight
Agent azodiisobutyronitrile is sent out, polymerisation obtains the acrylate with great amount of hydroxy group on side chain and is total under conditions of temperature is 60 DEG C
Polymers, latex A is mixed to obtain by 100 parts this acrylate copolymer with the benzophenone of 3 parts by weight；
（2）Take the hydroxypropyl chitosan material of 100 parts of Photocrosslinkable soluble in water, obtain solution B；
（3）It is to be sprayed at drop than the application method for 50% latex A, the water conservation coating of 50% solution B to constitute weight
Belt surface is filled, is led to after nitrogen 20min through ultraviolet radiation crosslinking 10min.
Embodiment 4：
（1）Take after the acrylic acid of 100 parts by weight mixes with the hydroxy-ethyl acrylate of 100 parts by weight, add drawing for 4 parts by weight
Agent azodiisobutyronitrile is sent out, polymerisation obtains the acrylate with great amount of hydroxy group on side chain and is total under conditions of temperature is 60 DEG C
Polymers, latex A is mixed to obtain by 100 parts this acrylate copolymer with the benzophenone of 4 parts by weight；
（2）Take the hydroxypropyl chitosan material of 100 parts of Photocrosslinkable soluble in water, obtain solution B；
（3）It is to be sprayed at drop than the application method for 40% latex A, the water conservation coating of 60% solution B to constitute weight
Belt surface is filled, is led to after nitrogen 20min through ultraviolet radiation crosslinking 10min.
Embodiment 5：
（1）Take after the acrylic acid of 100 parts by weight mixes with the hydroxy-ethyl acrylate of 100 parts by weight, add drawing for 5 parts by weight
Agent azodiisobutyronitrile is sent out, polymerisation obtains the acrylate with great amount of hydroxy group on side chain and is total under conditions of temperature is 60 DEG C
Polymers, latex A is mixed to obtain by 100 parts this acrylate copolymer with the benzophenone of 3 parts by weight；
（2）Take the hydroxypropyl chitosan material of 100 parts of Photocrosslinkable soluble in water, obtain solution B；
（3）It is to be sprayed at drop than the application method for 30% latex A, the water conservation coating of 70% solution B to constitute weight
Belt surface is filled, is led to after nitrogen 20min through ultraviolet radiation crosslinking 10min.
The preparation of the hydroxypropyl chitosan of Photocrosslinkable is followed the steps below in the various embodiments described above：Take equivalent
Chitosan adds sodium hydroxide solution alkalization, and freeze overnight is reacted with aqueous isopropanol, adds expoxy propane in catalyst tetramethyl
In the presence of base ammonium hydroxide, 60 DEG C are reacted precipitation in 10h, ethanol, and accessory substance is removed in dialysis, and it is hydroxypropyl chitosan to freeze；
EDC and 4- azidobenzoic acids are added in the DMSO solution that the hydroxypropyl chitosan for taking equivalent to prepare is dissolved in bar is stirred at room temperature
Dialysis in 75h, deionized water is reacted under part and removes accessory substance, the lyophilized hydroxypropyl chitosan for producing Photocrosslinkable.
The above described is only a preferred embodiment of the present invention, any formal limitation not is made to the present invention, though
So the present invention is disclosed as above with preferred embodiment, however, the present invention is not limited to, it is any to be familiar with this professional technology people
Member, without departing from the scope of the present invention, can make a little change or modification using the technology contents disclosed certainly, into
For the equivalent embodiment of equivalent variations, as long as being the content without departing from technical solution of the present invention, the technical spirit according to the present invention
Any simple modification, equivalent variations and the modification made to above example, are belonged in the range of technical solution of the present invention.
Claims (2)
1. a kind of preparation method of drip irrigation below the surface with water conservation coating, it is characterised in that：By the acrylic acid and third of each 100 parts by weight
Olefin(e) acid hydroxyl ethyl ester is mixed, and adds the initiator azodiisobutyronitrile of 2-5 parts by weight, is gathered under conditions of temperature is 60~65 DEG C
Close the acrylate copolymer for reacting to carry on side chain hydroxyl；Aforesaid propylene acid ester copolymer and benzophenone are pressed 1：
0.02-0.04 weight obtains latex A than mixing；The hydroxypropyl chitosan of the Photocrosslinkable of 100 parts by weight is dissolved in water, obtained
Solution B；Latex A and solution B are sprayed on to the surface of drip irrigation zone, latex A accounts for percentage by weight for 30-70%, and solution B accounts for weight
Percentage is 30-70%；Lead to the surface after spraying after nitrogen through ultraviolet radiation crosslinking i.e. acquisition water conservation coating.
2. preparation method of the drip irrigation below the surface according to claim 1 with water conservation coating, it is characterised in that：Take the shell of equivalent
Glycan adds sodium hydroxide solution alkalization, and freeze overnight is reacted with aqueous isopropanol, adds expoxy propane in catalyst tetramethyl
In the presence of ammonium hydroxide, 60 DEG C are reacted precipitation in 10h, ethanol, and accessory substance is removed in dialysis, and it is hydroxypropyl chitosan to freeze；Take
Under the conditions of addition EDC and 4- azidobenzoic acids are stirred at room temperature in the DMSO solution that hydroxypropyl chitosan prepared by equivalent is dissolved in
React dialysis in 75h, deionized water and remove accessory substance, the lyophilized hydroxypropyl chitosan for producing Photocrosslinkable.
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| CN201510538055.2A CN105131760B (en) | 2015-08-28 | 2015-08-28 | Drip irrigation below the surface band water conservation coating and preparation method |
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| CN201510538055.2A CN105131760B (en) | 2015-08-28 | 2015-08-28 | Drip irrigation below the surface band water conservation coating and preparation method |
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| CN105131760A CN105131760A (en) | 2015-12-09 |
| CN105131760B true CN105131760B (en) | 2017-11-03 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2005272649A (en) * | 2004-03-25 | 2005-10-06 | Kowa Chem Ind Co Ltd | Water-borne clear coating composition containing chitosan-containing emulsion |
| CN101530629A (en) * | 2009-02-27 | 2009-09-16 | 江南大学 | Method for preparing photo-crosslinking chitosan hydrogel film |
| CN101649171B (en) * | 2009-08-31 | 2011-08-17 | 广东达美新材料有限公司 | Solvent-free ultraviolet curing pressure sensitive adhersive for polyethylene protective film and preparation method thereof |
| CN101649165B (en) * | 2009-08-31 | 2011-12-28 | 广东达美新材料有限公司 | Ultraviolet curing pressure sensitive adhersive for polyethylene protective film and preparation method thereof |
| CN102911378A (en) * | 2012-11-19 | 2013-02-06 | 江南大学 | Method for preparing hydrogel film for curing chemotherapeutic phlebitis |
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