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A degradable self-repairing water-retaining and sand-fixing agent and its preparation method

A sand-fixing agent and self-repairing technology, applied in chemical instruments and methods, other chemical processes, agriculture, etc., can solve the problems of chemical sand-fixing agents being difficult to degrade, pollution in desert areas, etc., achieving good sand-fixing effect, long-term sand-fixing time, wide Application-wide effects

Active Publication Date: 2021-07-23
浙江蓝天知识产权运营管理有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the deficiencies of the prior art, to provide a degradable self-repairing water-retaining sand-fixing agent and its preparation method, which solves the problem that the chemical sand-fixing agent itself is difficult to degrade and will cause pollution to desert areas in the prior art, The degradable self-repairing water-retaining and sand-fixing agent provided has the advantages of being degradable, repairable, long-term sand-fixing time, good sand-fixing effect and wide application range

Method used

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  • A degradable self-repairing water-retaining and sand-fixing agent and its preparation method
  • A degradable self-repairing water-retaining and sand-fixing agent and its preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0022] Step 1, a hydrogel: 10 parts by weight of acrylamide, 3 parts of yellow gum, 10 parts of acrylic, 100 parts of water, add 0.5% of the mixture of 0.5% to potassium sulfate, add 0.3%. Unitedial age N, N'-methylene bis acrylamide, stirred for 20 min to give hydrogel to be used;

[0023] Step 2, a microcapsule is prepared: mixing the aqueous polyurethane powder and the stearate ratio of 100: 5, and the vortex gas flow refinement machine rotational speed 300 rpm is treated, and the stearic acid is sufficiently encapsulated with aqueous polyurethane powder, and then the mass concentration is 8 % Of the germinated starch, refined the mass ratio of the modified waterborne polyurethane powder and the germinated starch fluid of 3: 2; spray drying at 100 ° C, i.e., microcapsules to be used;

[0024] Step 3, preparing degradable self-repairing watergaining agent: 30 parts by weight of the hydrogel in step one, 5 parts by weight of the microcapsules in step two, 5 parts by weight of the...

Embodiment 2

[0026] Step 1, preparing a hydrogel: 15 parts of the weight of the acrylamide, 5 parts of xanthan gum, 8 parts of acrylic, 110 parts of water, add 0.5% of the mixture of 0.5% to potassium sulfate, add 0.3%. UNDER N, N'-methylene biscrylamide, stirring at least 10 min to give hydrogel to be used;

[0027] Step 2, a microcapsule is prepared: mixing the aqueous polyurethane powder and the stearate ratio of 100: 5, and the vortex gas flow refinement machine rotational speed 300 rpm is treated, and the stearic acid is sufficiently encapsulated with aqueous polyurethane powder, and then the mass concentration is 8 % Of the germinated starch, refined the mass ratio of the modified waterborne polyurethane powder and the germinated starch fluid of 3: 2; spray drying at 100 ° C, i.e., microcapsules to be used;

[0028] Step 3, preparing degradable self-repairing water saffodil: 30 parts by weight of the hydrogel in step one, 8 parts by weight of the microcapsules in step second, 5 parts by ...

Embodiment 3

[0030] Step 1, a hydrogel: 15 parts of the weight of the acrylamide, 5 parts of xanthan gum, 10 parts of acrylic, 150 parts of water, add 0.5% of the mixture of 0.5% to potassium sulfate, add 0.3%. UNDER N, N'-methylene biscrylamide, stirring at least 10 min to give hydrogel to be used;

[0031] Step 2, microcapsules: mixing the aqueous polyurethane powder and the stearate mass ratio of 100: 5, treated with vortex gas generator rotational speed 500 rpm, so that the stearic acid is sufficiently wrapped in aqueous polyurethane powder, and then the mass concentration is 8 % Of the germinated starch, refined the mass ratio of the modified waterborne polyurethane powder and the germinated starch fluid of 3: 2; spray drying at 100 ° C, i.e., microcapsules to be used;

[0032] Step three, preparing degradable self-repairing watergaining agent: 25 parts by weight of the hydrogel in step one, 9 parts by weight of the microcapsules in step second, 3 parts by weight of zeolite powder, to be ...

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Abstract

The invention relates to the technical field of soil restoration and environmental engineering, in particular to a degradable self-repairing water-retaining and sand-fixing agent and a preparation method thereof. The self-repairing water-retaining and sand-fixing agent includes the following components by weight: 20-30 parts of hydrogel, 5-10 parts of microcapsules, and 3-5 parts of inorganic powder; the hydrogel is xanthan gum / acrylic acid / acrylamide Ternary hydrogel; the core material of the microcapsule is water-based polyurethane powder, and the wall material of the microcapsule is gelatinized starch. The preparation method includes: preparing hydrogel by dissolving; mixing water-based polyurethane powder with gelatinized starch liquid and spraying and drying to obtain microcapsules; mixing and stirring hydrogel, microcapsules and inorganic powder to obtain sand-fixing agent. The invention solves the problem that the chemical sand-fixing agent itself is difficult to degrade and pollutes desert areas in the prior art, and the degradable self-repairing water-retaining and sand-fixing agent provided has the advantages of degradability, repairability, good sand-fixing effect and wide application range .

Description

Technical field [0001] The present invention relates to the field of soil repair environment engineering, and more particularly to a degradable self-repairing water saffodilizer and a preparation method thereof. Background technique [0002] Land desertification is one of the largest environmental and social economic issues facing the world today, and it is also one of the largest area and the most harmful in my country's desertification. The land desertification not only causes the original fragile ecological environment to deteriorate, but also brings serious impact on indoor indoor indifference area. The rapid expansion of the land area of ​​desertification, causing environmental deterioration and huge economic losses, making a hot spot in the world. To curb the increasingly rampant desert trend, you must be sanding. Land Desertification: The land degradation of drought, semi-arid and daddy and arid areas of factors, including climate variability and human activities. Narrow d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K17/40C09K105/00
CPCC09K17/40C09K2105/00
Inventor 陈庆昝航
Owner 浙江蓝天知识产权运营管理有限公司
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