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A kind of composite fulvic acid antibacterial sponge matrix and preparation method and application thereof

A fulvic acid and composite technology, which is applied in the field of composite fulvic acid antibacterial sponge matrix and its preparation, can solve the problems of low available green area in urban space, increased production cost, loss of human and financial resources, etc. Acetate oxidase, improve respiration, reduce crop transpiration

Active Publication Date: 2022-01-28
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, people pay great attention to the beauty and comfort of the ecological environment. Therefore, with the concept of sponge ecological city construction, various urban greening methods emerge in endlessly. However, due to the low green area available in urban space, there is no one It is suitable for growing plants on various interfaces of the city and can collect a large amount of rainwater to maintain a long-lasting moisture matrix
Moreover, the sponge matrix used in some small plant factories is soaked in water for a long time, and the contact with the plant root system is prone to produce plant rotten roots, matrix mildew, etc., resulting in increased production costs, decreased greening rate, and loss of human and financial resources.

Method used

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  • A kind of composite fulvic acid antibacterial sponge matrix and preparation method and application thereof
  • A kind of composite fulvic acid antibacterial sponge matrix and preparation method and application thereof
  • A kind of composite fulvic acid antibacterial sponge matrix and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Weigh 3 parts of 10% fulvic acid solution, 6 parts of acrylic acid with a neutralization degree of 50%, and 2 parts of antibacterial natural macromolecular chitosan solution, add them to a three-necked flask with a water bath temperature of 50°C, stir to fully dissolve, Continue to stir at a speed of 300r / min and raise the temperature to 70°C at a speed of 2°C / min. At the same time, dropwise add 7 parts of an aqueous solution containing 0.5 parts of potassium persulfate and 0.2 parts of KH550 dissolved in advance at a speed of 1 drop / s. After reacting for 2 hours, it was dried and crushed into fulvic acid water-retaining agent particles with a particle size of less than 1mm. In addition, 5 parts of polytetrahydrofuran and 15 parts of N-methylpyrrolidone were weighed and mixed, and then 0.3 part of dibutyltin dilaurate, 0.5 part of trimethylolpropane, and 0.5 part of N-methyldiethanolamine were added to a dry three-necked flask. Heat and stir in a water bath at 65°C for ...

Embodiment 2

[0035] Take by weighing 4 parts of 12% fulvic acid solution, 7 parts of acrylic acid with a neutralization degree of 50%, 2 parts of chitosan as a natural antibacterial macromolecule, add to a three-necked flask with a water bath temperature of 50 ° C, and continue to use 300 r / Stir at a speed of 1 min and heat up to 70 °C at a speed of 2 °C / min. At the same time, dropwise add 8 parts of an aqueous solution containing 0.6 parts of potassium persulfate and 0.2 parts of KH550 dissolved in advance at a speed of 1 drop / s, and react for 1.5 hours. Fulvic acid water-retaining agent particles that are crushed into particles with a particle size of less than 1 mm are dried. Weigh 6 parts of polytetrahydrofuran, 15 parts of N-methylpyrrolidone, 0.3 parts of dibutyltin dilaurate, 0.5 parts of trimethylolpropane, and 0.6 parts of chain extender into a dry three-necked flask, and heat it in a water bath at 65°C Stir for 10 minutes to fully dissolve, start the stirring device to stir at ...

Embodiment 3

[0037] Weigh 6 parts of 15% fulvic acid solution, 10 parts of acrylic acid with a neutralization degree of 40%, 4 parts of chitosan, peanut shell extract, and coconut shell extract concentrate antibacterial in a mass ratio of 2:1:1 Add the natural macromolecules into a three-necked flask with a water bath temperature of 55°C, stir to fully dissolve, continue to stir at a speed of 400r / min and raise the temperature to 75°C at a speed of 2°C / min, and drop at a speed of 1 drop / s Add 8 parts of pre-dissolved aqueous solution containing 0.5 parts of potassium persulfate and 0.3 parts of KH550, react for 1.5 hours, dry and pulverize into fulvic acid water retaining agent particles with a particle size of less than 1mm. In addition, 6 parts of polytetrahydrofuran and 18 parts of N-methylpyrrolidone were weighed and mixed, and then 0.5 part of dibutyltin dilaurate, 0.6 part of trimethylolpropane, and 0.8 part of N-methyldiethanolamine were added to a dry three-necked flask. Heat and s...

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Abstract

The invention discloses a composite fulvic acid antibacterial sponge matrix and a preparation method and application thereof, which belong to the technical field of material preparation and environmental treatment. Polymerize fulvic acid, acrylic acid, and antibacterial natural macromolecules under the conditions of initiator and crosslinking agent to obtain fulvic acid water retaining agent, and polymerize polytetrahydrofuran with isocyanate, N-methylpyrrolidone, catalyst, and crosslinking agent to form polyurethane emulsion , and then combined with fulvic acid water-retaining agent to obtain a composite fulvic acid antibacterial sponge matrix. The ingredients contained in the water-retaining fulvic acid composite antibacterial sponge matrix are environmentally friendly materials, non-toxic, and its porous structure and a large number of hydrophilic groups such as acrylic acid and polyurethane endow it with good water storage capacity, which can effectively store rainwater inside and be purified. And the addition of antibacterial macromolecules prevents sponges from mildew and root rot caused by long-term contact with water, and can be widely used as a soilless culture substrate in the construction of sponge cities.

Description

technical field [0001] The invention belongs to the technical field of material preparation and environmental treatment, and in particular relates to a composite fulvic acid antibacterial sponge matrix and its preparation method and application. Background technique [0002] At present, people pay great attention to the beauty and comfort of the ecological environment. Therefore, with the concept of sponge ecological city construction, various urban greening methods emerge in endlessly. However, due to the low green area available in urban space, there is no one It is suitable for growing plants on various interfaces of the city and can collect a large amount of rainwater to maintain a long-lasting moisture matrix. Moreover, the sponge matrix used in some small plant factories is soaked in water for a long time, and the contact with the plant root system is prone to produce plant rotten roots, matrix mildew, etc., resulting in increased production costs, decreased greening r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/76C08G18/75C08G18/63C08G18/66C08G18/48C08G18/32C08F251/00C08F289/00C08F220/06C08F283/04C08G101/00
CPCC08G18/7671C08G18/755C08G18/63C08G18/667C08G18/6688C08G18/4854C08G18/3206C08G18/3275C08F251/00C08F289/00C08F283/04C08G2110/0083C08F220/06
Inventor 牛育华柯如媛王晨赵轩宋洁窦玉芳韩星星
Owner SHAANXI UNIV OF SCI & TECH
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