Water-retaining agent colloid and preparation method thereof

A technology of water-retaining agent and colloid, applied in the direction of chemical instruments and methods, applications, organic fertilizers, etc., to achieve the effect of simple production process, wide application range and good mechanical properties

Inactive Publication Date: 2009-12-30
SHENYANG INST OF APPLIED ECOLOGY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, it is still a difficult task to develop an environmentally friendly water-retaining agent with simple synthesis process, low price, strong water absorption and retention capacity.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The water retaining agent colloid of the present invention is calculated in parts by weight, and its composition consists of: 100 parts of chitosan acetate solution, 100 parts of acrylamide solution, 200 parts of acrylic acid solution, 10 parts of N, N'-methylenebisacrylamide solution and 6 parts cerium ammonium nitrate.

[0021] Preparation method: in parts by weight, 100 parts of chitosan acetate solution, 100 parts of acrylamide solution, 200 parts of acrylic acid solution and 10 parts of N, N'-methylenebisacrylamide solution are directly mixed in a four-necked bottle, Stir evenly, blow nitrogen into the mixed solution at 4 liters / minute, and remove the air in the mixed solution. Then slowly increase the temperature of the mixed solution to 40°C at 5°C / 10 minutes, and keep it for 40 minutes, then add 6 parts of ammonium cerium nitrate, and slowly increase the temperature of the mixed solution to 80°C at 5°C / 10 minutes, stir evenly, and the solution Viscous rod climb...

Embodiment 2

[0026] The difference with Example 1 is: by weight, its composition consists of: 120 parts of chitosan acetate solution, 80 parts of acrylamide solution, 200 parts of acrylic acid solution, 10 parts of N, N'-methylene dipropylene dilute amide solution and 4 parts ceric ammonium nitrate.

[0027]Preparation method: in parts by weight, 120 parts of chitosan acetate solution, 80 parts of acrylamide solution, 200 parts of acrylic acid solution and 10 parts of N, N'-methylenebisacrylamide solution are directly mixed in a four-necked bottle, Stir evenly, blow nitrogen into the mixture at 2 liters per minute, and remove the air in the mixture. Then slowly raise the temperature of the mixed solution to 40 DEG C at 10 DEG C / 5 minutes, make it last for 30 minutes, then add 4 parts of cerium ammonium nitrate, stir evenly, and slowly raise the temperature of the mixed solution to 70 DEG C at 10 DEG C / 5 minutes again, the solution When sticky rod-climbing phenomenon occurs, transfer it to...

Embodiment 3

[0031] The difference with Example 1 is: by weight, its composition consists of: 150 parts of chitosan acetate solution, 50 parts of acrylamide solution, 300 parts of acrylic acid solution, 15 parts of N, N'-methylene dipropylene dilute amide solution and 5 parts ceric ammonium nitrate.

[0032] Preparation method: in parts by weight, 150 parts of chitosan acetate solution, 50 parts of acrylamide solution, 300 parts of acrylic acid solution and 15 parts of N, N'-methylenebisacrylamide solution are directly mixed in a four-necked bottle, Stir evenly, blow nitrogen into the mixed solution at 7 liters / minute, and remove the air in the mixed solution. Then slowly raise the temperature of the mixed solution to 40°C at 6°C / 8 minutes, and keep it for 60 minutes, then add 5 parts of ammonium cerium nitrate, stir evenly, and slowly raise the temperature of the mixed solution to 70°C at 6°C / 8 minutes, the solution When sticky rod-climbing phenomenon occurs, transfer it to a tray, dry a...

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Abstract

The invention relates to a farmland soil protection technique, in particular to water-retaining agent colloid and a preparation method thereof. In portion by weight, the water-retaining agent colloid consists of 100 to 150 portions of acetic acid chitosan solution, 50 to 100 portions of acrylamide solution, 200 to 500 portions of acrylic acid solution, 1 to 30 portions of N, N'-methylene-bis-acrylamide solution, and 1 to 10 portions of ceric ammonium nitrate solution. The water-retaining agent prepared by the invention has the distilled-water absorption multiple between 300 and 700 g / g, has the saline absorption multiple between 20 and 70 g / g, and has good mechanical properties. The novel water-retaining agent can play a role in saving water, protecting and vitalizing seedlings, preventing wind, fixing sand and restoring ecosystem in farmland application, and has broad application prospects.

Description

technical field [0001] The invention relates to farmland soil protection technology, in particular to a water-retaining agent colloid and a preparation method thereof. Background technique [0002] At present, water resources have increasingly become one of the important restrictive factors of national economic development. my country's agricultural water consumption accounts for 73.4% of the water, and the annual agricultural water shortage is about 30 billion m 3 , due to water scarcity and low water production efficiency, the agricultural water crisis is intensifying. [0003] Because of the advantages of convenient use and low cost, water-retaining agents have also become a new way and method for water-saving and production-increasing. Water-retaining agent is also called soil water-retaining agent, superabsorbent, humectant, superabsorbent resin, polymer water-absorbing agent. It can quickly absorb deionized water that is hundreds or even thousands of times heavier t...

Claims

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Application Information

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IPC IPC(8): C09K17/18C08F251/00C09K101/00
Inventor 刘作新苗永刚王振营张颖
Owner SHENYANG INST OF APPLIED ECOLOGY - CHINESE ACAD OF SCI
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