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 o

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

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

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

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

Example Embodiment

[0028] Example 1

[0029] The modification solution is a mixture of cetyltrimethylammonium bromide, sodium dodecylbenzene sulfonate, and water at a mass ratio of 1:0.8:5, and the mixture is evenly stirred to obtain the modification solution.

[0030] The crosslinking agent is N, N-methylene bisacrylamide.

[0031] The initiator is potassium persulfate.

[0032] The organic binder is epoxy resin E-44.

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

[0034] (1) According to the mass ratio of 1:7, mix the bentonite and the modified solution, stir for 1h at a temperature of 25℃, 200r / min, let stand for 1h, and centrifuge at 3000r / min for 8min to obtain a precipitate. The object is dried at a temperature of 100°C and ground to 80-100 mesh to obtain a ground product;

[0035] (2) According to the mass ratio of 1:5, mix hydroxymethyl cellulose and distilled water, stir in a constant temperature water bath at...

Example Embodiment

[0038] Example 2

[0039] The modification solution is a mixture of cetyltrimethylammonium bromide, sodium dodecylbenzene sulfonate, and water at a mass ratio of 1:0.8:6, and the mixture is evenly stirred to obtain the modification solution.

[0040] The crosslinking agent is N, N-methylene bisacrylamide.

[0041] The initiator is potassium persulfate.

[0042] The organic binder is epoxy resin E-44.

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

[0044] (1) Mix the bentonite and the modified solution at a mass ratio of 1:8, stir for 2h at a temperature of 27℃, 300r / min, let stand for 2h, and centrifuge at 4000r / min for 10min to obtain a precipitate. The material is dried at a temperature of 110°C and ground to 100 meshes to obtain a ground material;

[0045] (2) According to the mass ratio of 1:5, mix hydroxymethyl cellulose and distilled water, stir in a constant temperature water bath at 75℃ for 3...

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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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