CN106832312B - Application of hyperbranched emulsion in soilless culture - Google Patents
Application of hyperbranched emulsion in soilless culture Download PDFInfo
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- 239000000839 emulsion Substances 0.000 title claims abstract description 56
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 30
- 229920000587 hyperbranched polymer Polymers 0.000 claims abstract description 26
- 238000003756 stirring Methods 0.000 claims abstract description 19
- 235000013162 Cocos nucifera Nutrition 0.000 claims abstract description 13
- 244000060011 Cocos nucifera Species 0.000 claims abstract description 13
- 239000002250 absorbent Substances 0.000 claims abstract description 13
- 239000011521 glass Substances 0.000 claims abstract description 13
- 229920005989 resin Polymers 0.000 claims abstract description 13
- 239000011347 resin Substances 0.000 claims abstract description 13
- 239000000843 powder Substances 0.000 claims abstract description 12
- 239000011324 bead Substances 0.000 claims abstract description 11
- 239000008367 deionised water Substances 0.000 claims abstract description 9
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 9
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims abstract 2
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 claims description 45
- 238000006243 chemical reaction Methods 0.000 claims description 32
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 claims description 17
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 claims description 16
- 239000000178 monomer Substances 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 6
- 235000013312 flour Nutrition 0.000 claims 1
- 238000010521 absorption reaction Methods 0.000 abstract description 14
- 241000196324 Embryophyta Species 0.000 abstract description 6
- 238000000465 moulding Methods 0.000 abstract description 2
- 238000011056 performance test Methods 0.000 abstract description 2
- 239000003995 emulsifying agent Substances 0.000 abstract 1
- 239000000758 substrate Substances 0.000 abstract 1
- 230000002194 synthesizing effect Effects 0.000 abstract 1
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 66
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 36
- 239000000203 mixture Substances 0.000 description 28
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 21
- 229910052757 nitrogen Inorganic materials 0.000 description 15
- 238000005303 weighing Methods 0.000 description 15
- 238000010438 heat treatment Methods 0.000 description 14
- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 description 14
- 238000004821 distillation Methods 0.000 description 13
- 238000004321 preservation Methods 0.000 description 13
- GAWIXWVDTYZWAW-UHFFFAOYSA-N C[CH]O Chemical group C[CH]O GAWIXWVDTYZWAW-UHFFFAOYSA-N 0.000 description 7
- 238000004945 emulsification Methods 0.000 description 7
- 125000004492 methyl ester group Chemical group 0.000 description 7
- 230000007935 neutral effect Effects 0.000 description 7
- 239000007787 solid Substances 0.000 description 7
- 229910001873 dinitrogen Inorganic materials 0.000 description 6
- 239000002689 soil Substances 0.000 description 6
- 239000003054 catalyst Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 239000007809 chemical reaction catalyst Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004005 microsphere Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920001225 polyester resin Polymers 0.000 description 2
- 239000004645 polyester resin Substances 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 241001464837 Viridiplantae Species 0.000 description 1
- 238000012271 agricultural production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000012258 culturing Methods 0.000 description 1
- 239000000412 dendrimer Substances 0.000 description 1
- 229920000736 dendritic polymer Polymers 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 230000008635 plant growth Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000001308 synthesis method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G83/00—Macromolecular compounds not provided for in groups C08G2/00 - C08G81/00
- C08G83/002—Dendritic macromolecules
- C08G83/005—Hyperbranched macromolecules
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
- C08L9/06—Copolymers with styrene
- C08L9/08—Latex
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/20—Reduction of greenhouse gas [GHG] emissions in agriculture, e.g. CO2
- Y02P60/21—Dinitrogen oxide [N2O], e.g. using aquaponics, hydroponics or efficiency measures
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
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- Developing Agents For Electrophotography (AREA)
- Fertilizers (AREA)
Abstract
The invention relates to the technical field of soilless culture, in particular to application of hyperbranched emulsion in soilless culture. Firstly, synthesizing a hyperbranched polymer with a hydroxyl end capping, and adding an emulsifier and deionized water into the hyperbranched polymer to obtain a hyperbranched emulsion; and mixing and stirring the hyperbranched emulsion, coconut shell powder, sawdust, hollow glass beads and water-absorbent resin, and compacting and molding to obtain the soilless culture substrate for plants. The performance test shows that the water absorption of the hyperbranched emulsion is obviously improved after the hyperbranched emulsion is added.
Description
Technical Field
The invention belongs to the technical field of soilless culture, particularly relates to preparation of hyperbranched emulsion, and particularly relates to application of the hyperbranched emulsion in soilless culture.
Background
Soilless culture is a method for culturing plants by using other things without using soil. Since the 80 s in the 20 th century, the great use of pesticides and chemical fertilizers in agricultural production aggravates the salinization degree of soil and reduces the soil quality, thereby forming a serious threat to the agricultural ecological environment. Although China has a wide range of land, people all occupy a small land area. The soilless culture technology can be used for producing high-quality and safe vegetable products, can enlarge the planting area of green plants, and can also be used for indoor wall culture of flowers and plants. At present, the soilless culture technology in China is mature, but the problem of low water absorption rate also exists, and the growth of plants is influenced.
Hyperbranched dendrimers as their homologues are one of the hot spots studied in recent decades, because of their own advantages such as: the polyester resin has the characteristics of high branching, three-dimensional net shape, low viscosity, a large amount of active groups and quite strong chemical activity, so that the polyester resin has special performance. At present, the hyperbranched polymer has shown great application value in many fields.
Disclosure of Invention
The invention provides a synthesis method of a hydroxyl-terminated hyperbranched emulsion, aiming at solving the problem of low water absorption rate in soilless culture.
The invention also provides application of the hydroxyl-terminated hyperbranched emulsion in soilless culture.
The invention is realized by the following measures:
a hydroxyl-terminated hyperbranched emulsion is obtained by the following steps:
the hydroxyl-terminated hyperbranched emulsion is AB obtained by reacting diethanolamine with methyl acrylate2Monomer type, with trimethylolpropane as the core molecule, AB2The type monomer is obtained by reaction with nuclear molecules;
the core molecule and AB of the hydroxyl-terminated hyperbranched emulsion2Monomers are as follows 1: 3. 1:9 or 1:21 molar ratio reaction to obtain the first generation hyperbranched polymer, the second generation hyperbranched polymer or the third generation hyperbranched polymer respectively.
The hydroxyl-terminated hyperbranched emulsion is obtained by the following steps:
(1)AB2synthesis of monomers
Accurately weighing 0.015mol of diethanolamine and 7.5ml of methanol, respectively adding the diethanolamine and the methanol into a three-neck flask, connecting a 100 ℃ thermometer and a dropping funnel to the flask, introducing nitrogen into the three-neck flask, and opening a magnetic stirrer to ensure that the diethanolamine and the methanol are fully mixed and dissolved. Then accurately weighing 0.015mol of methyl acrylate, adding the methyl acrylate into a dropping funnel, slowly dropping the methyl acrylate into a flask, heating the mixture in a water bath to 40 ℃ after the dropping is finished, carrying out heat preservation reaction for 6 hours, transferring a product obtained by the reaction into a rotary evaporator, and carrying out reduced pressure distillation to remove methanol to obtain AB containing a methyl ester group and two hydroxyethyl groups2A type monomer.
(2) Synthesis of hydroxyl-terminated hyperbranched emulsion
Adding 0.5 mass percent of p-toluenesulfonic acid serving as a catalyst for reaction into the product, accurately weighing 0.005mol of trimethylolpropane, adding the trimethylolpropane into the system serving as a nuclear molecule, introducing nitrogen, stirring the mixture under the protection of the nitrogen until the solid is completely dissolved, heating the mixture to 85 ℃, carrying out heat preservation reaction for 24 hours, finally pouring a large amount of diethyl ether to repeatedly wash the obtained product, transferring the washed neutral solution into a rotary evaporator, and carrying out reduced pressure distillation to prepare the first-generation hyperbranched polymer G1. The reaction equation is as follows:
the application of the hyperbranched emulsion in soilless culture is prepared by the following steps:
(1) adding OP-10 into the prepared hyperbranched polymer, and adding deionized water for emulsification to obtain hydroxyl-terminated hyperbranched emulsion;
(2) adding the weighed hydroxyl-terminated hyperbranched emulsion into a dry and clean plastic container;
(3) adding coconut shell powder, sawdust, water-absorbent resin, SBR emulsion and hollow glass beads into the plastic container in the previous step, fully stirring, compacting and molding.
The invention has the beneficial effects that:
the plant soil containing the hyperbranched emulsion has good water absorption rate, simple production process and low cost, and has good market development prospect.
Detailed description of the preferred embodiments
The following is a more detailed description of the method for preparing the hyperbranched emulsion plant soil of the present invention, which is intended to illustrate the concept and features of the present invention and not to limit the scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Example 1
(1) 1.57g (0.015mol) of diethanolamine and 7.5ml of methanol were accurately weighed, and each of the weighed substances was put in a three-necked flask, a 100 ℃ thermometer and a dropping funnel were connected to the flask, nitrogen gas was introduced into the three-necked flask, and a magnetic stirrer was turned on to sufficiently mix and dissolve diethanolamine and methanol. Then accurately weighing 1.29g (0.015mol) of methyl acrylate, adding the methyl acrylate into a dropping funnel, slowly dropping the methyl acrylate into a flask, heating the mixture in a water bath to 40 ℃ after the dropping is finished, carrying out heat preservation reaction for 6 hours, transferring a product obtained by the reaction into a rotary evaporator, and reducing the temperaturePressure distillation is carried out to remove methanol, thus obtaining AB containing a methyl ester group and two hydroxyethyl groups2A type monomer;
(2) adding 0.0143G of p-toluenesulfonic acid into the product as a reaction catalyst, accurately weighing 0.67G (0.005mol) of trimethylolpropane, adding the trimethylolpropane into the system as a nuclear molecule, introducing nitrogen, stirring under the protection of nitrogen until the solid is completely dissolved, heating to 85 ℃, keeping the temperature for reaction for 24 hours, pouring a large amount of diethyl ether into the system, repeatedly washing the product obtained, transferring the solution washed to be neutral into a rotary evaporator, and carrying out reduced pressure distillation to prepare a first-generation hyperbranched polymer G1; adding OP-10 into the prepared hyperbranched polymer, and adding deionized water for emulsification to obtain hyperbranched emulsion;
(3) 10.0g of the hydroxyl-terminated hyperbranched emulsion was added to a dry and clean reaction vessel, and then 10.0g of coconut shell powder, 1.0g of hollow glass microspheres, 5.0g of sawdust, 26.0g of SBR emulsion and 0.2g of water-absorbent resin were added. After sufficiently stirring, the mixture was compacted and the water absorption was measured, and the results are shown in Table 1.
Example 2
(1) 3.16g (0.03mol) of diethanolamine and 8.5ml of methanol were accurately weighed, and each of the weighed materials was put in a three-neck flask, a 100 ℃ thermometer and a dropping funnel were connected to the flask, nitrogen gas was introduced into the three-neck flask, and a magnetic stirrer was turned on to sufficiently mix and dissolve diethanolamine and methanol. Then accurately weighing 2.58g (0.03mol) of methyl acrylate, adding the methyl acrylate into a dropping funnel, slowly dropping the methyl acrylate into a flask, heating the mixture in a water bath to 40 ℃ after the dropping is finished, carrying out heat preservation reaction for 6 hours, transferring a product obtained by the reaction into a rotary evaporator, carrying out reduced pressure distillation to remove methanol, and obtaining AB containing one methyl ester group and two hydroxyethyl groups2A type monomer;
(2) adding 0.0287G of p-toluenesulfonic acid serving as a catalyst for reaction into the product, accurately weighing 0.41G (0.003mol) of trimethylolpropane, adding the trimethylolpropane into the system serving as a nuclear molecule, introducing nitrogen, stirring the mixture under the protection of the nitrogen until the solid is completely dissolved, heating the mixture to 85 ℃, carrying out heat preservation reaction for 24 hours, pouring a large amount of diethyl ether for repeatedly washing to obtain a product, transferring the washed neutral solution into a rotary evaporator, and carrying out reduced pressure distillation to prepare a second-generation hyperbranched polymer G2; adding OP-10 into the prepared hyperbranched polymer, and adding deionized water for emulsification to obtain hyperbranched emulsion;
(3) 10.0g of the hydroxyl-terminated hyperbranched emulsion was added to a dry and clean reaction vessel, and then 10.0g of coconut shell powder, 1.0g of hollow glass microspheres, 5.0g of sawdust, 25.0g of SBR emulsion and 0.2g of water-absorbent resin were added. After sufficiently stirring, the mixture was compacted and the water absorption was measured, and the results are shown in Table 1.
Example 3
(1) 15.77g (0.15mol) of diethanolamine and 18ml of methanol were accurately weighed, and each of the weighed materials was put into a three-neck flask, a 100 ℃ thermometer and a dropping funnel were connected to the flask mouth, nitrogen gas was introduced into the three-neck flask, and a magnetic stirrer was turned on to sufficiently mix and dissolve diethanolamine and methanol. Then accurately weighing 12.92g (0.15mol) of methyl acrylate, adding the methyl acrylate into a dropping funnel, slowly dropping the methyl acrylate into a flask, heating the mixture in a water bath to 40 ℃ after the dropping is finished, carrying out heat preservation reaction for 6 hours, transferring a product obtained by the reaction into a rotary evaporator, carrying out reduced pressure distillation to remove methanol, and obtaining AB containing one methyl ester group and two hydroxyethyl groups2A type monomer;
(2) adding 0.1435G of p-toluenesulfonic acid into the product to serve as a reaction catalyst, accurately weighing 0.94G (0.007mol) of trimethylolpropane, adding the trimethylolpropane into the system to serve as a nuclear molecule, introducing nitrogen, stirring the mixture under the protection of the nitrogen until the solid is completely dissolved, heating the mixture to 85 ℃, carrying out heat preservation reaction for 24 hours, finally pouring a large amount of diethyl ether to repeatedly wash the obtained product, transferring the washed neutral solution into a rotary evaporator, and carrying out reduced pressure distillation to prepare a third-generation hyperbranched polymer G3; adding OP-10 into the prepared hyperbranched polymer, and adding deionized water for emulsification to obtain hyperbranched emulsion;
(3) 10.0g of the hydroxyl-terminated hyperbranched emulsion was put into a dry and clean container, and then 10.0g of coconut shell powder, 1.0g of hollow glass beads, 5.0g of sawdust, 30.0g of SBR emulsion and 0.2g of water-absorbent resin were added. After sufficiently stirring, the mixture was compacted and the water absorption was measured, and the results are shown in Table 1.
Example 4
(1) 2.11g (0.02mol) of diethanolamine and 9.5ml of methanol were accurately weighed, and each of the weighed materials was put in a three-neck flask, a 100 ℃ thermometer and a dropping funnel were connected to the flask, nitrogen gas was introduced into the three-neck flask, and a magnetic stirrer was turned on to sufficiently mix and dissolve diethanolamine and methanol. Then accurately weighing 1.72g (0.02mol) of methyl acrylate, adding the methyl acrylate into a dropping funnel, slowly dropping the methyl acrylate into a flask, heating the mixture in a water bath to 40 ℃ after the dropping is finished, carrying out heat preservation reaction for 6 hours, transferring a product obtained by the reaction into a rotary evaporator, carrying out reduced pressure distillation to remove methanol, and obtaining AB containing one methyl ester group and two hydroxyethyl groups2A type monomer;
(2) adding 0.0192G of p-toluenesulfonic acid serving as a reaction catalyst into the product, accurately weighing 0.94G (0.007mol) of trimethylolpropane, adding the trimethylolpropane into the system serving as a nuclear molecule, introducing nitrogen, stirring in the nitrogen protection atmosphere until the solid is completely dissolved, heating to 85 ℃, carrying out heat preservation reaction for 24 hours, finally pouring a large amount of diethyl ether to repeatedly wash the obtained product, transferring the washed neutral solution into a rotary evaporator, and carrying out reduced pressure distillation to prepare a first-generation hyperbranched polymer G1; adding OP-10 into the prepared hyperbranched polymer, and adding deionized water for emulsification to obtain hyperbranched emulsion;
(3) 13.0g of the hydroxyl-terminated hyperbranched emulsion was put into a dry and clean container, and 12.0g of coconut shell powder, 1.5g of hollow glass beads, 5.5g of sawdust, 28.0g of SBR emulsion and 0.2g of water-absorbent resin were added. After sufficiently stirring, the mixture was compacted and the water absorption was measured, and the results are shown in Table 1.
Example 5
(1) 5.26g (0.05mol) of diethanolamine and 19ml of methanol were accurately weighed, and each of the weighed materials was put in a three-neck flask, a 100 ℃ thermometer and a dropping funnel were connected to the flask, nitrogen gas was introduced into the three-neck flask, and a magnetic stirrer was turned on to sufficiently mix and dissolve diethanolamine and methanol. Then accurately weighing 4.31g (0.05mol) of methyl acrylate, adding the methyl acrylate into a dropping funnel, slowly dropping the methyl acrylate into a flask, heating the mixture in a water bath to 40 ℃ after the dropping is finished, keeping the temperature for reaction for 6 hours, and then carrying out heat preservation reaction on the mixtureTransferring the product obtained from the reaction into a rotary evaporator, and distilling under reduced pressure to remove methanol to obtain AB containing a methyl ester group and two hydroxyethyl groups2A type monomer;
(2) adding 0.0479G of p-toluenesulfonic acid into the product as a catalyst for reaction, accurately weighing 0.81G (0.006mol) of trimethylolpropane, adding the trimethylolpropane into the system as a nuclear molecule, introducing nitrogen, stirring under the protection of nitrogen until the solid is completely dissolved, heating to 85 ℃, carrying out heat preservation reaction for 24 hours, finally pouring a large amount of diethyl ether to repeatedly wash the obtained product, transferring the washed neutral solution into a rotary evaporator, and carrying out reduced pressure distillation to prepare a second-generation hyperbranched polymer G2; adding OP-10 into the prepared hyperbranched polymer, and adding deionized water for emulsification to obtain hyperbranched emulsion;
(3) 13.0g of the hydroxyl-terminated hyperbranched emulsion was put into a dry and clean container, and then 10.0g of coconut shell powder, 1.0g of hollow glass beads, 5.5g of sawdust, 30.0g of SBR emulsion and 0.2g of water-absorbent resin were added. After sufficiently stirring, the mixture was compacted and the water absorption was measured, and the results are shown in Table 1.
Example 6
(1) 15.77g (0.15mol) of diethanolamine and 18ml of methanol were accurately weighed, and each of the weighed materials was put into a three-neck flask, a 100 ℃ thermometer and a dropping funnel were connected to the flask mouth, nitrogen gas was introduced into the three-neck flask, and a magnetic stirrer was turned on to sufficiently mix and dissolve diethanolamine and methanol. Then accurately weighing 12.91g (0.15mol) of methyl acrylate, adding the methyl acrylate into a dropping funnel, slowly dropping the methyl acrylate into a flask, heating the mixture in a water bath to 40 ℃ after the dropping is finished, carrying out heat preservation reaction for 6 hours, transferring a product obtained by the reaction into a rotary evaporator, carrying out reduced pressure distillation to remove methanol, and obtaining AB containing one methyl ester group and two hydroxyethyl groups2A type monomer;
(2) adding 0.1434G of p-toluenesulfonic acid into the product as a catalyst for reaction, accurately weighing 0.94G (0.007mol) of trimethylolpropane, adding the trimethylolpropane into the system as a nuclear molecule, introducing nitrogen, stirring under the protection of nitrogen until the solid is completely dissolved, heating to 85 ℃, carrying out heat preservation reaction for 24 hours, finally pouring a large amount of diethyl ether to repeatedly wash the obtained product, transferring the washed neutral solution into a rotary evaporator, and carrying out reduced pressure distillation to prepare a third-generation hyperbranched polymer G3; adding OP-10 into the prepared hyperbranched polymer, and adding deionized water for emulsification to obtain hyperbranched emulsion;
(3) 10.0g of the hydroxyl-terminated hyperbranched emulsion was put into a dry and clean container, and then 10.0g of coconut shell powder, 1.0g of hollow glass beads, 5.0g of sawdust, 26.0g of SBR emulsion and 0.2g of water-absorbent resin were added. After sufficiently stirring, the mixture was compacted and the water absorption was measured, and the results are shown in Table 1.
Comparative example 1
To a dry clean container was added 10.0g of coconut shell powder, 1.0g of hollow glass beads, 5.0g of sawdust, 32.0g of SBR emulsion and 0.2g of water-absorbent resin. After sufficiently stirring, the mixture was compacted and the water absorption was measured, and the results are shown in Table 1.
Comparative example 2
To a dry clean container was added 13.0g of coconut shell powder, 1.0g of hollow glass beads, 5.5g of sawdust, 35.0g of SBR emulsion and 0.2g of water-absorbent resin. After sufficiently stirring, the mixture was compacted and the water absorption was measured, and the results are shown in Table 1.
Comparative example 3
To a dry clean container was added 12.0g of coconut shell powder, 1.5g of hollow glass beads, 5.5g of sawdust, 38.0g of SBR emulsion and 0.2g of water-absorbent resin. After sufficiently stirring, the mixture was compacted and the water absorption was measured, and the results are shown in Table 1.
Table 1 results of the performance test of the above examples
And (3) performance testing:
through the comparison of the performances of the examples and the comparative examples, it can be seen that the water absorption of the plant soil added with the hyperbranched polymer emulsion is improved.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the embodiments, and any other changes, modifications, combinations, substitutions and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents and are included in the scope of the present invention.
Claims (9)
1. The application of the hyperbranched emulsion in soilless culture is characterized by being obtained by the following steps:
① reaction of diethanolamine with methyl acrylate to form AB2The monomer is prepared by the following steps of,
② core molecules trimethylolpropane and AB2Reacting the monomers according to a molar ratio of 1:3-21 to obtain hydroxyl-terminated hyperbranched polymer emulsion;
③ adding a certain amount of OP-10 and deionized water into the prepared hydroxyl-terminated hyperbranched polymer emulsion to emulsify and stir to obtain the hydroxyl-terminated hyperbranched emulsion.
2. The use according to claim 1, characterized in that the hyperbranched emulsion contains a high number of hydroxyl groups at the ends of the branches.
3. Use according to claim 1, characterized in that the core molecule and AB are2The monomer molar ratio is 1:3, 1:9 and 1:21, and the first-generation hydroxyl-terminated hyperbranched polymer, the second-generation hydroxyl-terminated hyperbranched polymer and the third-generation hydroxyl-terminated hyperbranched polymer are respectively obtained.
4. The use of claim 1, wherein the culture material further comprises coconut shell powder, sawdust, hollow glass beads, SBR emulsion, and water-absorbent resin.
5. The use of a hyperbranched emulsion as claimed in claim 4, wherein the amount of coconut shell flour is 20-45%.
6. The use of a hyperbranched emulsion as claimed in claim 4, wherein the amount of sawdust is 5-15%.
7. The use of a hyperbranched emulsion as claimed in claim 4, wherein the amount of SBR emulsion is 35-60%.
8. The use of a hyperbranched emulsion as claimed in claim 4, wherein the amount of said hollow glass beads is 0.1-0.7%.
9. The use of a hyperbranched emulsion as claimed in claim 4, wherein the amount of said water-absorbent resin is 0.8-2%.
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| CN102060988A (en) * | 2010-11-08 | 2011-05-18 | 济南大学 | Hydroxy-terminated hyperbranched polyamine-ester polymer and application thereof in microfluidic chip |
| CN102504228A (en) * | 2011-11-09 | 2012-06-20 | 陕西科技大学 | Method for preparing non-ionic hyperbranched linear polymer emulsifier |
| CN102911371A (en) * | 2012-11-09 | 2013-02-06 | 长兴化学工业(中国)有限公司 | Hyperbranched polyester modified acrylic resin and preparation method thereof |
| CN103804072A (en) * | 2013-12-31 | 2014-05-21 | 北京仁创三会农业科技有限公司 | Intelligent nutrition substance |
| CN105130622A (en) * | 2015-08-27 | 2015-12-09 | 北京绿顺源农业科技有限公司 | Soilless culture substrate formula used for vertical greening, and production method therefor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102060988A (en) * | 2010-11-08 | 2011-05-18 | 济南大学 | Hydroxy-terminated hyperbranched polyamine-ester polymer and application thereof in microfluidic chip |
| CN102504228A (en) * | 2011-11-09 | 2012-06-20 | 陕西科技大学 | Method for preparing non-ionic hyperbranched linear polymer emulsifier |
| CN102911371A (en) * | 2012-11-09 | 2013-02-06 | 长兴化学工业(中国)有限公司 | Hyperbranched polyester modified acrylic resin and preparation method thereof |
| CN103804072A (en) * | 2013-12-31 | 2014-05-21 | 北京仁创三会农业科技有限公司 | Intelligent nutrition substance |
| CN105130622A (en) * | 2015-08-27 | 2015-12-09 | 北京绿顺源农业科技有限公司 | Soilless culture substrate formula used for vertical greening, and production method therefor |
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