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Water-preserving materials and process for preparing same

A technology for water-retaining materials and preparation steps, applied in the field of water-absorbing materials, can solve problems such as cost reduction

Inactive Publication Date: 2005-11-30
太原市纳威科技贸易有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Now there are also natural inorganic materials and polymer materials that are directly made into sand-fixing or water-absorbing materials through the action of cross-linking agents. The relative cost has been reduced to a certain extent, and the effect has also been improved, but there is no long-term water retention that is repeatedly used and cheap. Material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A water-retaining material whose composition is (by weight percentage)

[0015] 1-5% of bentonite with a particle size of 10-100nm;

[0016] Polyacrylamide 0.1~1%;

[0017] The rest is water.

[0018] The preparation method is as follows: (1) Emulsify nano-bentonite with water at room temperature for 5 minutes to 2 hours; (2) Stir at 1 to 50°C and add a metered polyacrylamide during the process; (3) Within 0.5-24 hours, stir until the polyacrylamide is completely swollen and fully mixed and compounded with the bentonite to prepare the water-retaining material of the present invention.

[0019] Through actual experiments, the above-mentioned water-retaining materials are mixed with general soil or sand (according to the weight ratio of soil or sand to 1:1), and then plants are planted, and the surface is covered with 2-5cm soil, mixed with water-retaining materials The water retention time of the water in the mixed soil is 6-8 times the water retention time of ordinary soil,...

Embodiment 2

[0021] A water-retaining material whose composition is (by weight percentage)

[0022] 1 to 5% of bentonite with a particle size of 10 to 30 nm;

[0023] Polyacrylamide 0.1~1%;

[0024] The rest is water.

[0025] The preparation method is as follows: (1) Emulsify the nano-bentonite with water at room temperature for 5 minutes to 1.5 hours, (2) stir at 1-50°C, and add the measured polyacrylamide during the process; (3) Within 0.5-10 hours, stir until the polyacrylamide is completely swollen and fully mixed and compounded with the bentonite to prepare the water-retaining material of the present invention.

[0026] Through actual experiments, the above-mentioned water-retaining materials are mixed with ordinary soil or sand (according to the weight of soil or sand at 1:1), and then plants are planted, and the surface is covered with 2~5cm of soil, infiltrating the mixed soil with water-retaining materials The water retention time of the water in the medium is 7-9 times that of ordin...

Embodiment 3

[0028] A water-retaining material whose composition is (by weight percentage)

[0029] 3% bentonite with a particle size of 1~300nm or 10~100nm or 10~30nm;

[0030] Polyacrylamide 0.3%;

[0031] The rest is water.

[0032] The preparation method is the same as in Example 1 or Example 2, and the water retention material is prepared. Under the same experimental conditions as in Example 1 and Example 2, the obtained water retention time is basically the same.

[0033] The nano bentonite used in the present invention is an inorganic bentonite, and its preparation steps are as follows: based on the total weight of raw materials: 1 to 99% of raw bentonite ore, 0.1 to 40% by weight selected from quaternary ammonium salt cationic surfactants, lithium carbonate or Modifier of sodium carbonate, 0-40% by weight alkaline activator, 0-40% by weight protonating agent and 0-98% by weight selected from deionized water, ethanol, glycol suspension or water-soluble polymer Suspension dispersant; Ste...

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PUM

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Abstract

The invention discloses a repeatedly-usable water reserving material and its preparation. The water reserving material comprises alta-mud of size of 1-300nm, 0.1-1 wt% of polyacrylamide and water. The invention comprises the following steps: (1) emulsifying nanometer alta-mud in water for 5 minutes-2 hour under normal temperature; (2) adding polyacrylamide in mixing process; (3) agitating until polyacrylamide and alta-mud incompletely mix to produce said water reserving material. The invention is a high-consistency jelly.

Description

Technical field: [0001] The invention relates to a water-absorbing material capable of absorbing a large amount of water, in particular to a material containing bentonite and capable of absorbing a large amount of water. Background technique: [0002] At present, my country’s water resources are very scarce. In addition to natural precipitation, the existing water supply methods for plants use two more water-saving methods: sprinkler irrigation and drip irrigation. Even so, plants are scattered in arid, semi-arid, desert, and semi-desert areas. 80% to 90% of the water in the soil around the roots is lost due to evaporation and infiltration, and only about 10% of the water is absorbed by the roots, causing the waste of water resources that are already in short supply. Especially in the arid and semi-arid areas of our country, artificial irrigation is not possible. After planting trees in spring, the trees are often withered due to drought and the survival rate is very low. As a re...

Claims

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Application Information

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IPC IPC(8): C08L33/26
Inventor 李伟岳贝贝葛云
Owner 太原市纳威科技贸易有限公司
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