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Application of a kind of hyperbranched emulsion in soilless culture

A technology of terminal hydroxyl hyperbranching and emulsion, applied in application, soilless cultivation, culture medium, etc., can solve the problem of low water absorption, achieve good water absorption, low cost, and simple production process

Active Publication Date: 2020-04-03
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of low water absorption during soilless culture, the invention provides a synthetic method of hydroxyl-terminated hyperbranched emulsion

Method used

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  • Application of a kind of hyperbranched emulsion in soilless culture
  • Application of a kind of hyperbranched emulsion in soilless culture

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Accurately weigh 1.57g (0.015mol) of diethanolamine and 7.5ml of methanol, and add them to a three-necked flask respectively. A 100°C thermometer and a dropping funnel are connected to the mouth of the flask. Nitrogen gas is introduced into the three-necked flask, and the magnetic stirrer is turned on. , making diethanolamine and methanol fully miscible. Then, accurately weigh 1.29g (0.015mol) of methyl acrylate, add it to the dropping funnel, and slowly drop it into the flask. The product obtained by the reaction was transferred to a rotary evaporator, and methanol was distilled off under reduced pressure to obtain AB containing one carbomethoxy group and two hydroxyethyl groups. 2 type monomer;

[0026] (2) Add 0.0143g of p-toluenesulfonic acid as a catalyst for the reaction to the above product, accurately weigh 0.67g (0.005mol) trimethylolpropane, add it to the system, as a nuclear molecule, pass into nitrogen, in nitrogen Stir under a protective atmosphere un...

Embodiment 2

[0029] (1) Accurately weigh 3.16g (0.03mol) of diethanolamine and 8.5ml of methanol, and add them to a three-necked flask respectively. A 100°C thermometer and a dropping funnel are connected to the mouth of the flask. Nitrogen gas is introduced into the three-necked flask, and the magnetic stirrer is turned on. , making diethanolamine and methanol fully miscible. Then, accurately weigh 2.58g (0.03mol) of methyl acrylate, add it to the dropping funnel, and slowly drop it into the flask. The product obtained by the reaction was transferred to a rotary evaporator, and methanol was distilled off under reduced pressure to obtain AB containing one carbomethoxy group and two hydroxyethyl groups. 2 type monomer;

[0030] (2) Add 0.0287g of p-toluenesulfonic acid as a catalyst for the reaction to the above product, accurately weigh 0.41g (0.003mol) trimethylolpropane, add it to the system, as a nuclear molecule, pass into nitrogen, in nitrogen Stir under a protective atmosphere unti...

Embodiment 3

[0033] (1) Accurately weigh 15.77g (0.15mol) of diethanolamine and 18ml of methanol, and add them to a three-necked flask respectively. A 100°C thermometer and a dropping funnel are connected to the mouth of the flask. Nitrogen gas is introduced into the three-necked flask, and the magnetic stirrer is turned on. Make diethanolamine and methanol fully miscible. Then, accurately weigh 12.92g (0.15mol) of methyl acrylate, add it to the dropping funnel, and slowly drop it into the flask. The product obtained by the reaction was transferred to a rotary evaporator, and methanol was distilled off under reduced pressure to obtain AB containing one carbomethoxy group and two hydroxyethyl groups. 2 type monomer;

[0034] (2) Add 0.1435g of p-toluenesulfonic acid as a catalyst for the reaction to the above product, accurately weigh 0.94g (0.007mol) trimethylolpropane, add it to the system, as a nuclear molecule, pass into nitrogen, in nitrogen Stir under a protective atmosphere until t...

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Abstract

The invention relates to the technical field of soilless culture and in particular relates to application of hyperbranched emulsion to soilless culture. According to the application, a hydroxyl-terminated hyperbranched polymer is synthesized at first, and the hyperbranched polymer is added into an emulsifier and de-ionized water to obtain the hyperbranched emulsion; the hyperbranched emulsion is mixed with coconut shell powder, saw dust, hollow glass microspheres and water-absorbing resin, and stirred; a mixture is compacted and molded into a plant soilless culture matrix. A performance test shows that the water absorption rate is remarkably improved after the hyperbranched emulsion is added.

Description

technical field [0001] The invention belongs to the technical field of soilless culture, and in particular relates to the preparation of a hyperbranched emulsion, in particular to the application of a hyperbranched emulsion in soilless culture. Background technique [0002] Soilless farming is a method of growing plants without soil. Since the 1980s, the extensive use of pesticides and chemical fertilizers in agricultural production has caused soil salinization to intensify and soil quality to decline, posing a serious threat to the agricultural ecological environment. Although my country has a vast territory, the land area per capita is small. Soilless culture technology can not only be used to produce high-quality and safe vegetable products, but also can expand the planting area of ​​green plants, and can also be used as indoor walls to grow flowers and plants. At present, my country's soilless culture technology is becoming more and more mature, but there is also the p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G83/00C08L9/08C08L87/00C08L97/02C08K7/28A01G31/00
CPCA01G24/00C08G83/005C08L9/08C08L2205/025C08L2205/035C08L2205/16C08L87/00C08L97/02C08K7/28Y02P60/21
Inventor 寿崇琦王傅巍贾海燕
Owner UNIV OF JINAN
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