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Sand stabilization technology through polyvinyl alcohol aqueous solution congelation

A polyvinyl alcohol and polyvinyl alcohol condensing technology, which is applied in the field of polymer chemical materials for sand fixation, can solve the problems of affecting the water absorption of sand, high consumption of polyvinyl alcohol and high cost.

Inactive Publication Date: 2014-09-03
赵新亮
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the amount of polyvinyl alcohol is too high and the cost is high; the polymer distribution in the consolidated layer of the sand is uneven (as the water volatilizes, the polymer is brought to the surface); the high concentration of the surface layer affects the water absorption of the sand And other issues

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0007] The present invention adopts polyvinyl alcohol of complete alcoholysis type, higher degree of polymerization as raw material (such as PVA2099), is configured into the aqueous solution that concentration is about 2%, (configuration concentration needs according to the average porosity of sand grain, the purpose of sand fixing needs) According to the required thickness of the consolidation layer and the ambient temperature (below -15 degrees), determine the amount of spraying and the temperature of the spraying liquid.

[0008] Sand-fixing effect of the present invention is tested below by experiment.

[0009] 1. Compressive strength test: Make a dry sand-fixing cylinder with a diameter of 16mm and a thickness of 5.5mm, place a heavy object on the cylinder to reach 100Kg, the cylinder remains stable, and its compressive strength can reach 4.5MPa, which shows that the present invention has relatively High compressive strength.

[0010] 2. Water retention performance measu...

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PUM

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Abstract

The invention provides a sand stabilization technology through polyvinyl alcohol aqueous solution. A polyvinyl alcohol molecular chain is processed to form a three-dimensional net structure, so that the purpose of uniform and efficient sand stabilization is achieved, a good moisture and fertility preservation effect is achieved, toxic and side effects on plant are avoided, and the sand stabilization technology can be applied to sand processing for pasture and crops planted in deserts.

Description

Technical field [0001] The invention is a sand-fixing technology using macromolecular chemical materials. Because it has good water and fertilizer retention effects and has no toxic and side effects on plants, it can be used for sandy land treatment of planting grass and crops in deserts. Background technique [0002] Polyvinyl alcohol is a polymer containing a large number of polar groups (-OH). Its molecular chain structure is symmetrical and regular. It has good film-forming, cohesive and emulsifying properties, and has certain biodegradability. Environmentally friendly material. Because polyvinyl alcohol has better water resistance and mechanical properties, it is an ideal material for sand control. However, other sand-fixing materials, such as polyacrylamide, have neurotoxicity and are far less environmentally friendly than polyvinyl alcohol. [0003] The traditional sand control method of polyvinyl alcohol is to spray polyvinyl alcohol aqueous solution on the sand, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D3/12A01B79/00
Inventor 赵新亮
Owner 赵新亮