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Preparation method of inorganic clay-alkali cellulose water-retaining material

A technology of alkali cellulose and water-retaining materials, applied in soil conditioning materials, organic fertilizers, chemical instruments and methods, etc., can solve problems such as high requirements for preparation conditions and reaction equipment, complex preparation process of superabsorbent resin, and environmental pollution.

Inactive Publication Date: 2018-12-04
NORTHWEST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation process of superabsorbent resin is relatively complicated, and the requirements for preparation conditions and reaction equipment are relatively high.
The use of mulch film is expensive and easy to cause environmental pollution, and its use is limited in windy desert areas

Method used

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  • Preparation method of inorganic clay-alkali cellulose water-retaining material
  • Preparation method of inorganic clay-alkali cellulose water-retaining material
  • Preparation method of inorganic clay-alkali cellulose water-retaining material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] 1. Preparation of inorganic clay-sodium carboxymethyl cellulose soil water retention material

[0043] 1) After removing impurities, loess and laterite are mixed at a mass ratio of 1:0.2, dried, and crushed to 100-200 mesh;

[0044] 2) Take a certain amount of treated loess and laterite mixed soil, add 2.5-4.5% of its mass of sodium carboxymethyl cellulose, mix well, add tap water with 60-85% of the mass of inorganic clay, at 300-600r / min Stir at a stirring speed for 30-60 minutes, dry and pulverize to obtain inorganic clay-sodium carboxymethyl cellulose soil water retention material.

[0045] 3) Prepare inorganic clay-sodium carboxymethyl cellulose water-retaining material into a viscous turbid liquid with a concentration of 0.75g / mL, and then spread it evenly on the upper layer of the soil and press it to form a soil-based water-retaining layer. Under natural conditions, weigh its mass and calculate the water retention rate. At 73.5 hours, the water retention rate o...

Embodiment 2

[0046] Embodiment 2, the preparation of inorganic clay-sodium hydroxymethylcellulose soil water retention material

[0047] 1) After removing impurities, loess and red clay are mixed at a mass ratio of 1:0.5, dried, and crushed to 100-200 mesh;

[0048] 2) Take a certain amount of treated mixed inorganic clay, add 2.5~4.5% of the mass of hydroxymethyl cellulose sodium, mix well, add tap water with 60~85% of the mass of the inorganic clay, and stir at a stirring speed of 300~600r / min Stir under low pressure for 30-60 minutes, dry and pulverize to obtain inorganic clay-sodium hydroxymethylcellulose soil water retention material;

[0049] 3) The inorganic clay-hydroxymethyl cellulose sodium water-retaining material is made into a viscous turbid liquid with a concentration of 0.75g / mL, and then it is evenly spread on the upper layer of the soil and pressed to form a soil-based water-retaining layer. Under natural conditions, weigh its mass and calculate the water retention rate. ...

Embodiment 3

[0050] Embodiment three, the preparation of inorganic clay-sodium methylcellulose soil water retention material

[0051] 1) After removing impurities, loess and red clay are mixed at a mass ratio of 1:1, dried, and crushed to 100-200 mesh;

[0052] 2) Take a certain amount of treated mixed inorganic clay, add 2.5-4.5% of its mass of sodium methylcellulose, mix well, add tap water with 60-85% of the mass of inorganic clay, and mix at a stirring speed of 300-600r / min Stir for 30-60 minutes, dry and pulverize to obtain inorganic clay-sodium methylcellulose soil water retention material;

[0053] 3) Prepare inorganic clay-methylcellulose sodium water-retaining material into a viscous turbid solution with a concentration of 0.75g / mL, then evenly spread it on the upper layer of the soil, and press it to form a soil-based water-retaining layer. Under natural conditions, weigh its mass and calculate the water retention rate. At 80 hours, the water retention rate of inorganic clay-so...

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Abstract

The invention discloses a preparation method of an inorganic clay-alkali cellulose water-retaining material. The method comprises the following steps: adding alkali cellulose with a mass of 0.1-4.5% of a mass of inorganic clay into the inorganic clay, performing uniform mixing, adding tap water with a mass of 60-85% of the mass of the inorganic clay, performing uniform stirring, performing drying,and performing crushing to obtain the inorganic clay-alkali cellulose composite water-retaining material. The method disclosed by the invention uses the natural inorganic clay as a raw material, so that production costs of a soil water-saving material can be well reduced; and the clay can provide necessary nutrients for psammophytes to make the psammophytes grow quickly. A long-chain structure ofthe alkali cellulose and strong hydrophilic groups carried by the alkali cellulose make the material have good water retention and water absorption performance in addition to excellent cohesiveness;and the soil water-retaining material prepared by the method has excellent water retention performance, can effectively reduce water loss, improve a soil ecological function, provide good soil and water conditions for plant growth, and promote growth of vegetation or crops.

Description

technical field [0001] The invention relates to a water-retaining material used for soil moisture conservation, in particular to a preparation method of an inorganic clay-alkali cellulose composite water-retaining material, which belongs to the technical field of water and soil conservation. Background technique [0002] More people and less land is the basic national condition of our country. The usable cultivated land is still decreasing, and the only way to expand the living space is to use sandy land (the sandy land in my country is 2.6 billion mu, and the cultivated land is less than 2 billion mu). However, many sandy lands are located in arid and semi-arid sandstorm hazard areas, and the annual precipitation is scarce. The biggest obstacle to the use of sandy and dry land is lack of water. Areas with less precipitation have a higher proportion of water lost by evaporation. For example, in extremely arid regions, more than 90% of rainwater is lost through evaporation; ...

Claims

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Application Information

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IPC IPC(8): C09K17/40C09K101/00
CPCC09K17/40C09K2101/00
Inventor 雷自强程莎孙煜娇孙晓妹彭辉曾巍
Owner NORTHWEST NORMAL UNIVERSITY
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