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Ecological water storage and moisture retention soil improvement composite material and preparation method thereof

A soil improvement and composite material technology, applied in the field of environmental engineering, can solve the problems of difficult industrialization, high water absorption rate and high cost, and achieve the effects of reducing the number of watering, high water absorption rate, and improving soil alkalinity

Active Publication Date: 2015-08-19
ELION RESOURCE GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In terms of agricultural and forestry products, currently more products include: acrylamide-acrylate copolymer crosslinking (including polyacrylamide, sodium polyacrylate, potassium polyacrylate, ammonium polyacrylate), which are high in cost and fast in water absorption. Water grabbing with plants; inorganic minerals, starch-grafted acrylate copolymers (such as bentonite / acrylate, starch / acrylate, attapulgite / acrylate), etc., have high costs and are difficult to industrialize

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Preparation of water storage moisturizer: prepare 22 parts of sodium hydroxide into an aqueous solution with a mass concentration of 25%, add it to 100 parts of acrylic acid, add 30 parts of Hangjin 2 to it after the reaction is completed # Then add 0.08 parts of crosslinking agent (N, N methylene bisacrylamide) and 0.45 parts of initiator (potassium persulfate), seal it after stirring evenly, and react at 70~80°C for 1~3 hours. The product is dried and crushed.

[0018] 100 parts of calcium-based bentonite, 0.1 part of water storage and moisturizing agent, and 0.5 part of ferrous sulfate are added to a disc granulator to granulate, so that the moisture content is 10% by weight and the particle size is 2mm. Then, it is dried and bagged.

[0019] Product performance test: water storage rate is carried out according to GB / T 20973-2007; moisture retention time test method: simulate a desert area, put the material into sand after granulation, add tap water to reach saturati...

Embodiment 2

[0022] Preparation of water storage moisturizer: prepare 25 parts of sodium hydroxide as an aqueous solution and add it to 100 parts of acrylic acid, and then add 40 parts of Hang Jin 2 to it after the reaction is completed # Stir with soil, then add 0.15 parts of cross-linking agent (glycerol) and 0.45 parts of initiator (ammonium persulfate), stir evenly, seal, react at 70-80°C for 1-3 hours, and dry and crush the product.

[0023] 100 parts of calcium-based bentonite, 0.25 part of water-storing moisturizing agent, and 0.6 part of agricultural ferrous sulfate are added to the disc granulator to granulate, so that the water weight percentage is 12%, and the particle size is 5mm, then dried, packed bag.

[0024] The product performance test method is the same as in Example 1, and the test results: the water storage ratio is 570%, the moisturizing time is 96 hours, and the pH value is 7.2.

Embodiment 3

[0026] Preparation of water storage moisturizer: add the prepared sodium hydroxide solution to the acrylic acid, and then add Hang Jin 2 to it after the reaction is completed # Stir with soil, then add crosslinking agent (N, N methylenebisacrylamide) and initiator (ammonium persulfate), stir evenly, seal, react at 70~80°C for 1~3 hours, dry the product, broken.

[0027] 100 parts of calcium-based bentonite, 0.5 part of water-storage moisturizing agent, and 1 part of agricultural ferrous sulfate are added to the disc granulator to granulate, so that the water weight percentage is 13%, and the particle size is 1mm, then dried and packed bag.

[0028] The product performance test method is the same as that in Example 1, and the test results: the water storage ratio is 1157%, the moisturizing time is 132 hours, and the pH value is 6.5.

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Abstract

The invention discloses an ecological water storage and moisture retention soil improvement composite material and a preparation method thereof, and belongs to the technical field of environment engineering. The composite material contains, by weight, 100 parts of calcium bentonite, 0.1-0.5 parts of a water storage and moisture retention agent, and 0.5-1 part of ferrous sulfate. The preparation method comprises the following steps: adding calcium bentonite, the water storage and moisture retention agent and ferrous sulfate into a granulator, granulating to make the water weight percentage of 10-13% and the particle size of 1-5mm, drying, and bagging. The composite material has high water absorbency, is in favor of realizing water storage of plants, and can substantially improve the survival rate of vegetations especially when the composite material is used in saline land with the pH value of 8-10.

Description

technical field [0001] The invention relates to the technical field of environmental engineering, in particular to an ecological water storage and moisturizing soil improvement composite material and a preparation method thereof. Background technique [0002] At present, the water storage and moisturizing materials on the market are mainly used in two aspects: the first type of medical and sanitary products, this series of water-absorbing materials require to absorb water in a very short time without releasing water; the second type is agricultural and forestry products, requiring a relatively fast water absorption rate Slow, and at the same time require the function of releasing water and repeatedly absorbing / discharging water. In terms of agricultural and forestry products, currently more products include: acrylamide-acrylate copolymer crosslinking (including polyacrylamide, sodium polyacrylate, potassium polyacrylate, ammonium polyacrylate), which are high in cost and fas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/40C09K109/00
Inventor 周玉生刘珊郭娟丽刘建辉周明吉陈步宁
Owner ELION RESOURCE GROUP
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