Preparation method of drought-resistant water-retaining agent

A technology of drought-resistant water-retaining agent and cross-linking agent, applied in chemical instruments and methods, applications, organic fertilizers, etc., can solve the problems of drought resistance, low water-retention capacity, soil compaction, etc. Structure, the effect of increasing the water absorption of the product

Inactive Publication Date: 2018-09-21
裴泽民
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a preparation method of the drought-resistant and water-retaining agent for the long-term use of the current soil drought-resistant and water-retaining agent in the soil, which will cause soil compaction, and the drought-resistant and water-retaining capacity is not high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0023] A preparation method of a drought-resistant water-retaining agent, the preparation method comprising the steps of:

[0024] (1) According to the mass ratio of 1:7~8, mix bentonite and modified solution, stir for 1~2h at a temperature of 25~27°C, 200~300r / min, let stand for 1~2h, and use 3000~ Centrifuge at 4000r / min for 8-10min to obtain a precipitate, dry the precipitate at a temperature of 100-110°C, and grind to 80-100 mesh to obtain a ground product;

[0025] (2) According to the mass ratio of 1:5, mix hydroxymethyl cellulose and distilled water, stir in a constant temperature water bath at a temperature of 70~75°C for 1~3h, and ultrasonically disperse for 30~40min to obtain a dispersion, in parts by weight In total, take 50~60 parts of dispersion liquid, 18~25 parts of sodium hydroxide solution, 10~15 parts of acrylic acid, 7~9 parts of acrylamide, 5~7 parts of grinding, 1~3 parts of crosslinking agent, 1~3 1 part initiator, mix acrylic acid and sodium hydroxide s...

Embodiment 1

[0029] The modified solution is to mix hexadecyltrimethylammonium bromide, sodium dodecylbenzenesulfonate and water according to the mass ratio of 1:0.8:5, and stir evenly to obtain the modified solution.

[0030] The crosslinking agent is N, N-methylenebisacrylamide.

[0031] The initiator is potassium persulfate.

[0032] The organic binder is Epoxy E-44.

[0033] A preparation method of a drought-resistant water-retaining agent, the preparation method comprising the steps of:

[0034](1) Mix bentonite and modified solution according to the mass ratio of 1:7, stir at 25°C and 200r / min for 1h, let stand for 1h, and centrifuge at 3000r / min for 8min to obtain a precipitate, which is Dry the product at a temperature of 100°C, grind it to 80-100 mesh, and obtain the ground product;

[0035] (2) Mix hydroxymethyl cellulose and distilled water at a mass ratio of 1:5, stir in a constant temperature water bath at a temperature of 70°C for 1 hour, and disperse ultrasonically for 30...

Embodiment 2

[0039] The modified solution is to mix hexadecyltrimethylammonium bromide, sodium dodecylbenzenesulfonate and water according to the mass ratio of 1:0.8:6, and stir evenly to obtain the modified solution.

[0040] The crosslinking agent is N, N-methylenebisacrylamide.

[0041] The initiator is potassium persulfate.

[0042] The organic binder is Epoxy E-44.

[0043] A preparation method of a drought-resistant water-retaining agent, the preparation method comprising the steps of:

[0044] (1) Mix bentonite and modified solution according to the mass ratio of 1:8, stir at 27°C and 300r / min for 2h, let stand for 2h, and centrifuge at 4000r / min for 10min to obtain a precipitate, which is Dry the product at a temperature of 110°C, grind it to 100 mesh, and obtain the ground product;

[0045] (2) Mix hydroxymethyl cellulose and distilled water at a mass ratio of 1:5, stir in a constant temperature water bath at a temperature of 75°C for 3 hours, and disperse ultrasonically for 0 ...

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PUM

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Abstract

The invention discloses a preparation method of a drought-resistant water-retaining agent, and belongs to the technical field of soil fertilizers and water-saving agriculture. According to the preparation method provided by the invention, N, N-methylene bisacrylamide is used as a crosslinking agent, potassium persulfate is used as an initiator, carboxymethyl cellulose is subjected to graft copolymerization with acrylic acid and acrylamide, so that the number of space network crosslinking points is further increased; after being effectively grafted with hydrophilic monomers acrylic acid and acrylamide, a large network structure can be formed, liquid can be better absorbed and retained, the water holding capacity of soil can be increased, the moisture evaporation rate of the soil can be reduced, and modified montmorillonite is added at the same time, and because montmorillonite bentonite has the characteristics of relatively high cohesiveness, cation exchange property, hygroscopicity andthe like, the characteristics have good effects of adjusting physical and chemical properties of the soil and improving water, fertilizer and gas heat of the soil. The preparation method provided bythe invention solves the problems that an existing soil drought-resistant and water-retaining agent can cause soil hardening and the drought-resistant and water-retaining capacity of the soil is not high when used in the soil for a long time.

Description

technical field [0001] The invention belongs to the technical field of soil fertilizer and water-saving agriculture, and in particular relates to a preparation method of a drought-resistant and water-retaining agent. Background technique [0002] Drought-resistant and water-retaining agent, one of soil fertilizer and water-saving agricultural technology products. Every year there will be different degrees of drought and drought. Drought is the enemy of agriculture. It occurs frequently, covers a wide area, and lasts for a long time. Therefore, the damage is also great, and it has become more serious in recent years. Drought has a great impact on food production. During the entire growth period of crops, especially the sowing and emergence stages of crops, it has a greater impact, resulting in uneven emergence, lack of seedlings and broken ridges, slow growth, and ultimately leads to a decline in yield and quality. Therefore, drought resistance and seedling preservation , Ea...

Claims

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Application Information

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IPC IPC(8): C09K17/40C08F251/02C08F220/06C08F220/56C08F222/38C08F251/00C09K101/00C09K107/00
CPCC08F251/00C08F251/02C09K17/40C09K2101/00C09K2107/00C08F220/06C08F220/56C08F222/385
Inventor 裴泽民徐扣华丁正颖
Owner 裴泽民
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