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Self-associating cationic polymer coated humic acid sand-fixing sustained-release agent and preparation method thereof

A cationic polymer and self-association technology, applied in fertilizer mixtures, chemical instruments and methods, and other chemical processes, can solve the problems of no soil improvement and poor sand-fixing effect, and achieve the effect of improving soil and increasing nutrients

Pending Publication Date: 2018-12-14
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing chemical sand-fixing methods rely on the cohesion between the sand-fixing agent and the sand grains for sand-fixing. The sand-fixing effect is poor, and it only consolidates the soil without improving the soil to achieve the purpose of planting crops.

Method used

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  • Self-associating cationic polymer coated humic acid sand-fixing sustained-release agent and preparation method thereof
  • Self-associating cationic polymer coated humic acid sand-fixing sustained-release agent and preparation method thereof
  • Self-associating cationic polymer coated humic acid sand-fixing sustained-release agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] (1) Dissolving and mixing

[0039] Take 80 parts of deionized water, 8 parts of acrylamide, 1 part of butyl acrylate, and 6 parts of methacryloyloxyethyltrimethylammonium chloride, add them to a three-necked flask, heat in a water bath, blow nitrogen, stir, and heat up to 45°C.

[0040] (2) Polymerization

[0041] After step (1) is fully stirred for 15 minutes, slowly add 0.15 parts of potassium persulfate dissolved in 30 parts of deionized water dropwise, raise the temperature to 65°C, and then dissolve N,N-methylene in 20 parts of deionized water 0.03 parts of bisacrylamide, and stirred to make it fully mixed, and reacted for 8 hours to obtain a cationic polyacrylamide solution with a three-dimensional network structure.

[0042] (3) Coating

[0043] After the above process is completed, 3 parts of potassium humate dissolved in 7 parts of deionized water is added dropwise to make the cationic polyacrylamide coat the humic acid molecules to obtain a coating.

[004...

Embodiment 2

[0047] (1) Dissolving and mixing

[0048] Take 80 parts of deionized water, 10 parts of acrylamide, 1.5 parts of butyl acrylate, and 8 parts of methacryloyloxyethyltrimethylammonium chloride, add them to a three-necked flask, heat in a water bath, blow nitrogen, stir, and heat up to 50°C.

[0049] (2) Polymerization

[0050] After step (1) is fully stirred for 15 minutes, slowly add 0.3 parts of potassium persulfate dissolved in 30 parts of deionized water dropwise, raise the temperature to 60°C, and then dissolve N,N-methylene in 20 parts of deionized water 0.049 parts of bisacrylamide, and stirred to make it fully mixed, and reacted for 9 hours to obtain a cationic polyacrylamide solution with a three-dimensional network structure.

[0051] (3) Coating

[0052] After the above process is completed, 3 parts of potassium humate dissolved in 7 parts of deionized water is added dropwise to it, and the humic acid molecules are coated by cationic polyacrylamide to obtain a coat...

Embodiment 3

[0056] (1) Dissolving and mixing

[0057] Take 80 parts of deionized water, 12 parts of acrylamide, 2 parts of butyl acrylate, and 10 parts of methacryloyloxyethyltrimethylammonium chloride, add them to a three-necked flask, heat in a water bath, blow nitrogen, stir, and heat up to 55°C.

[0058] (2) Polymerization

[0059] After step (1) is fully stirred for 15 minutes, slowly add 0.48 parts of potassium persulfate dissolved in 30 parts of deionized water dropwise, raise the temperature to 55°C, and then dissolve N,N-methylene in 20 parts of deionized water 0.072 parts of bisacrylamide, and stirred to make it fully mixed, and reacted for 10 hours to obtain a cationic polyacrylamide solution with a three-dimensional network structure.

[0060] (3) Coating

[0061] After the above process is completed, 3 parts of potassium humate dissolved in 7 parts of deionized water is added dropwise to it, and the humic acid molecules are coated by cationic polyacrylamide to obtain a coati...

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Abstract

The invention provides a self-associating cationic polymer coated humic acid sand-fixing sustained-release agent and a preparation method thereof. The self-associating cationic polymer coated humic acid sand-fixing sustained-release agent is obtained by coating humic acid with a cationic polyacrylamide having a three-dimensional network structure, and the preparation method specifically comprisesthe following steps: taking acrylamide, methacryloyloxyethyl trimethyl ammonium chloride and butyl acrylate as monomers, adding a crosslinking agent and an initiator, and obtaining three-dimensional network-like cationic polyacrylamide with a micellar polymerization method; adding a humate solution into the cationic polyacrylamide to obtain a coated substance, and drying and pulverizing to obtainthe sand-fixing sustained-release agent. According to the invention, cations contained in the sand-fixing sustained-release agent form an electrostatic interaction with anions on the surface of sand,thereby achieving the purpose of sand fixation; cationic polyacrylamide self is of a three-dimensional network structure, and has hydrophilicity and water retention properties; humic acid has a hydrophilic functional group, and also has a water retention effect; and humic acid further has the capability of increasing soil nutrients and improving soil.

Description

technical field [0001] The invention belongs to the field of chemical sand fixation, and relates to a sand fixation agent capable of water retention, sand fixation and soil environment improvement, in particular to a self-association cationic polymer-coated humic acid sand fixation slow-release agent and a preparation method thereof. Background technique [0002] Due to the drought and lack of rainfall in some areas, a large amount of land has been desertified, even desertified. These areas are prone to sand and dust disasters, so it is necessary to invest a lot of money in sand disaster control. Desertification or even desertification areas are mainly fine sand, mainly composed of silica and quartz sand, which basically does not contain organic matter, is non-sticky, does not retain water, and does not retain fertilizer. [0003] Existing chemical sand-fixation methods rely on the cohesion between sand-fixing agents and sand grains for sand-fixation. The sand-fixing effect ...

Claims

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Application Information

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IPC IPC(8): C09K17/32C09K17/20C09K105/00
CPCC09K17/20C09K17/32C09K2105/00
Inventor 牛育华杨通宋洁赵艳娜柯如媛费贵强程明轩阮欢
Owner SHAANXI UNIV OF SCI & TECH
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