Preparation for water retention agent having biochemistry nutrition function

A water-retaining agent and functional technology, applied in chemical instruments and methods, organic fertilizers, agricultural machinery and implements, etc., can solve problems such as unfavorable popularization and application, high product cost, complicated preparation process, etc., to improve soil, stimulate crop growth, The effect of improving the quality of agricultural products

Inactive Publication Date: 2008-10-01
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above-mentioned patents introduce humic acid into the water-retaining agent and can endow it with nutritional functions, there are common problems such as complicated preparation process and high product cost, which are not conducive to the promotion and application in agriculture.

Method used

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  • Preparation for water retention agent having biochemistry nutrition function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Example 1 Put 30 grams of acrylic acid in a reactor, add 160 grams of deionized water and stir to dissolve, use potassium hydroxide to adjust the pH value of the aqueous solution to 5, and dissolve 10 grams of acrylamide with 20 grams of deionized water to prepare an aqueous solution of acrylamide And add it to the neutralized acrylic acid aqueous solution, then add 30 grams of attapulgite, 0.5 grams of ammonium persulfate, 0.05 potassium metabisulfite, 0.2 grams of N, N-methylenebisacrylamide, 0.07 grams of triethanolamine and mix uniform. Nitrogen was blown into the reactor for 30 minutes, and polymerized at 20°C for 4 hours to obtain a gel-like product. The gel product is cut into pieces, dried and pulverized to obtain powdered acrylic acid-acrylamide copolymer. Spray 20 grams of powdered acrylic acid-acrylamide copolymer with 10 grams of 5% humic acid aqueous solution by weight, and dry in a drying oven at 60° C. for 30 minutes to obtain a low-cost water retaining ...

Embodiment 2

[0021] Example 2 Put 100 grams of acrylic acid in a reactor, add 500 grams of deionized water and stir to dissolve, use potassium hydroxide to adjust the pH value of the aqueous solution to 6, and dissolve 90 grams of acrylamide with 140 grams of deionized water to prepare an aqueous solution of acrylamide And add to the neutralized acrylic acid aqueous solution, then add 100 grams of attapulgite, 0.05 grams of potassium persulfate, 0.5 sodium metabisulfite, 0.5 grams of N, N-methylenebisacrylamide, 1 gram of triethanolamine and mix uniformly. Nitrogen was blown into the reactor for 30 minutes, and polymerized at 40°C for 5 hours to obtain a gel-like product. The gel product is cut into pieces, dried and pulverized to obtain powdered acrylic acid-acrylamide copolymer. Spray 50 grams of powdered acrylic acid-acrylamide copolymer with 10 grams of 10% humic acid aqueous solution by weight, and dry in a drying oven at 60°C for 40 minutes to obtain a low-cost water retaining agent ...

Embodiment 3

[0022] Example 3 Put 40 grams of acrylic acid in a reactor, add 408.91 grams of deionized water and stir to dissolve, use 31.09 grams of potassium hydroxide to adjust the pH value of the aqueous solution to 7, and dissolve 20 grams of acrylamide with 100 grams of deionized water to produce propylene Amide aqueous solution was added to the neutralized acrylic acid aqueous solution, and then 50 grams of attapulgite, 0.2 grams of sodium persulfate, 0.1 potassium metabisulfite, 0.05 grams of N, N-methylenebisacrylamide, and 0.2 grams of triethanolamine were added and mix well. Nitrogen was blown into the reactor for 30 minutes, and polymerized at 70° C. for 2 hours to obtain a gel-like product. The gel product is cut into pieces, dried and pulverized to obtain powdered acrylic acid-acrylamide copolymer. Spray 5 grams of powdered acrylic acid-acrylamide copolymer with 10 grams of humic acid aqueous solution with a weight content of 13%, and dry it in a drying oven at 60° C. for 20...

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Abstract

The invention provides a preparation method of a water-retaining agent with biochemical nutritional functions. Acrylic acid of the proportioning quantity is put into a reactor, and added with deioned water, naturalized with potassium hydroxide; acrylic amide of the proportioning quantity is prepared into the water solution of acrylic amide with deioned water, added into the water solution of naturalized acrylic acid, and then respectively added with attapulgite, an oxidant, a reducer, and an accelerant in proportioning quantities thereof, and well mixed and filled with nitrogen, thus a colloid product is obtained through polymerization. The colloid product is smashed and a powdered acrylic acid-acrylic amide copolymer is acquired; the acrylic acid-acrylic amide copolymer is sprayed with the water solution of humic acid, and dried, and finally the water-retaining agent is prepared having the biochemical nutritional functions. Attapulgite is added to reduce the cost of the water-retaining agent, and humic acid is utilized to endow the water-retaining agent with the biochemical nutritional function in post treatment. The water absorption rate of the water-retaining agent is 180 to 400 times, and the normal saline absorption rate of the water-retaining agent is 20 to 65 times.

Description

technical field [0001] The invention belongs to the field of superabsorbent resins, and in particular relates to a preparation method of a water-retaining agent with biochemical and nutritional functions. Background technique [0002] Water retaining agent is a functional polymer material with high water absorption and water retention properties. It has been widely used in many fields such as agriculture, forestry, medical and health, petroleum, chemical industry, building materials, biochemical technology and food. At present, the water-retaining agents used in the market generally have problems such as high cost and single function, which are greatly restricted in popularization and application. In recent years, more and more attention has been paid to the application of water-retaining agents in agriculture, which is mainly reflected in the research on the synthesis of new water-retaining agents, modification, cost reduction, and increased functions. Chinese patent 11434...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L33/02C08L33/26C08L99/00C08K3/34C09K17/40C09K101/00
Inventor 潘振远白福臣孔金祥
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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