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An environment-friendly saline-alkali-resistant water-retaining agent

A water-retaining agent and saline-alkali-resistant technology, which is applied in the direction of organic fertilizers, fertilizer mixtures, chemical instruments and methods, etc., can solve the problems of increased production cost of water-retaining agents, insufficient ability to absorb salt water, and restrictions on the application of water-retaining agents to reduce the surface diameter Flow rate, excellent water absorption, and the effect of realizing ecological benefits

Active Publication Date: 2017-03-15
昌吉慧尔智联生态有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional water retaining agents generally have the problem of strong absorption of pure water but insufficient absorption of salt water. Many products have hundreds or even thousands of times of water absorption for pure water, but only have the ability to absorb pure water for salt water. 1 / 10 or even 1 / 100 of the water-retaining agent, which limits the application of water-retaining agents in the field of agriculture and forestry
In recent years, there have been many reports on the preparation methods of cross-linked polyacrylic acid salt-tolerant water-retaining agents at home and abroad. Although these studies have improved the salt-resistance of the prepared water-retaining agents to a certain extent, they still have not solved the problem of poor salt absorption ability. problems, and some methods have complex post-treatment processes, which increase the production cost of water-retaining agents

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Example 1: Preparation of thermoplastic animal glue

[0019] Take 100 parts of industrial leather glue (animal glue extracted from animal skin as raw material) in parts by weight, 500 parts of zinc chloride aqueous solution with a mass percentage of 50% in the reaction kettle, adjust the pH to 2 with hydrochloric acid to make it Acid denaturation; after 30 minutes, heat to 95°C and keep for 30 minutes to thermally denature the protein; add 80 parts of hydrogen peroxide and react at 60°C for 60 minutes to modify the amino acid side chain of the protein. After the reaction, add 80 parts of sodium bisulfite React for 30 minutes to remove excess oxygen, and then add 3 parts of potassium persulfate, 5 parts of ammonium persulfate and 100 parts of methyl acrylate as initiators, and pass in N at the same time. 2 After reacting at 60° C. for 3 hours, the reaction was stopped. After the reaction, the solid was fully precipitated with acetone, and the solid obtained by centrifugal se...

Embodiment 2

[0021] Take 30 parts of the thermoplastic animal glue prepared in Example 1, 40 parts of polyvinyl alcohol (PVA), 2 parts of maleic anhydride, and 2 parts of azobisisobutyronitrile in parts by weight. Stir in a high-speed mixer for 5 minutes and dry at 30°C for 12 hours; control the temperature at 140°C to melt and blend the blend in a twin-screw extruder for 5 minutes; dissolve in 800 parts of water and stir at high speed to form a sol, then spray After drying, the environment-friendly salt and alkali resistant water retaining agent of the present invention is obtained.

Embodiment 3

[0023] Take 80 parts of the thermoplastic animal glue prepared in Example 1, 10 parts of polyethylene glycol (PEG), 10 parts of tributyl citrate, and 5 parts of sodium carbonate in parts by weight. Stir in a high-speed mixer for 20 minutes and dry at 60°C for 12 hours; control the temperature at 100°C to melt and blend the blend in a twin-screw extruder for 10 minutes; dissolve in 800 parts of water and stir at high speed to form a sol, then spray After drying, the environment-friendly salt and alkali resistant water retaining agent of the present invention is obtained.

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PUM

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Abstract

The invention provides an environment-friendly salt / alkali-tolerant water retention agent which is prepared from the following components in parts by mass: 30-80 parts of thermoplastic animal glue, 10-40 parts of water-soluble high polymer, 2-10 parts of crosslinking agent and 2-5 parts of foaming agent. The salt / alkali-tolerant water retention agent fully utilizes the natural renewable animal glue resources in China, is beneficial to implementing unification of ecological effect, social benefit and economic benefit, and has important application prospects and meanings for economic and social sustainable development.

Description

Technical field [0001] The invention belongs to the technical field of soil conditioning materials or soil stabilizing materials, and specifically relates to an environment-friendly salt-alkali-resistant water retaining agent. Background technique [0002] China needs 7% of the world's arable land to feed 22% of the world's population. However, this task is challenged by severe water scarcity. Because China is the world’s largest water-scarce country, with a per capita water resource of 2,300m 3 , Which is only 1 / 4 of the world's per capita level, and the limited water resources are extremely unevenly distributed in space. The northern region, which accounts for more than 60% of the country's land area, has less than 20% of the national total. In China’s water use structure, agricultural water accounts for about 75% to 80%, but China’s agricultural water still faces resource shortages, and agricultural water waste is very serious, resulting in a farmland irrigation utilization ra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K17/32
Inventor 李保强
Owner 昌吉慧尔智联生态有限公司