Method for preparing composite water evaporation inhibitor

An evaporation inhibitor and moisture technology, which is applied in chemical instruments and methods, reagents, and other chemical processes to achieve the effects of small prolonged attenuation, good stability, and reduced water loss.

Inactive Publication Date: 2008-08-06
TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the surfactant composite system has been applied for a long time, it is a new subject to develop a composite system with excellent effects and special performance based on the research on the physical and chemical properties of the composite system.

Method used

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  • Method for preparing composite water evaporation inhibitor
  • Method for preparing composite water evaporation inhibitor
  • Method for preparing composite water evaporation inhibitor

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0019] Weigh 1.25 g of cetyl alcohol and fully dissolve it in 50 g of ether to obtain a water evaporation inhibitor.

[0020] Take two identical porcelain plates with a surface area of ​​100cm 2 Left and right, inject 1000 grams of water respectively, add 30 microliters of inhibitor to one porcelain plate, and not add to the other porcelain plate. After standing at 30°C for 72 hours, weigh and calculate the water evaporation loss of the two porcelain plates, and pass The formula calculates the water evaporation inhibition rate of the spread inhibitor system. The results show that the water evaporation inhibition rate of the system is only 7%, which shows that the ethanol solution system of cetyl alcohol has poor water evaporation inhibition effect.

example 2

[0022] Weigh 1.25 g of cetyl alcohol and fully dissolve it in 50 g of ether to obtain a water evaporation inhibitor.

[0023] Take two identical porcelain plates with a surface area of ​​100cm 2 Left and right, inject 1000 grams of water respectively, add 30 microliters of inhibitor to one porcelain plate, and not add to the other porcelain plate. After standing at 30°C for 72 hours, weigh and calculate the water evaporation loss of the two porcelain plates, and pass The formula calculates the water evaporation inhibition rate of the spread inhibitor system. The results show that the water evaporation inhibition rate of the system is 25.1%, and the inhibition efficiency of the cetyl alcohol ether solution is higher than that of the cetyl alcohol ethanol solution in Example 1.

example 3

[0025] Weigh 0.9375 g of cetyl alcohol and 0.3125 g of n-butanol and fully dissolve them in 50 g of ether to obtain the water evaporation inhibitor.

[0026] Take two identical porcelain plates with a surface area of ​​100cm 2 Left and right, inject 1000 grams of water respectively, add 30 microliters of inhibitor to one porcelain plate, and not add to the other porcelain plate. After standing at 30°C for 96 hours, weigh and calculate the water evaporation loss of the two porcelain plates, and pass The formula calculates the water evaporation inhibition rate of the spread inhibitor system. The results showed that the water evaporation of the porcelain plate with spreading inhibitor decreased obviously, and the water evaporation inhibition rate of the system reached 48.5%.

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Abstract

The invention prepares composite water evaporation inhibitor through adopting the built technology. The technical characteristics are that long-chain fatty alcohol and short-chain alcohol are remixed into molecular film base material, stable solution is prepared through dissolving appropriate spreading solvent which is chosen in ambient temperature, thereby obtaining the water evaporation inhibitor. The water evaporation inhibitor which is obtained through the process can automatically spread out on the water level to form an insoluble molecular film, which has favorable temperature interference resistance ability, matter interference resistance and self-restoring ability, and the efficiency of inhibiting water evaporation is reduced as time prolongs, thereby having excellent stability. The preparation process of the invention is simple, and can be prepared in-situ. The water evaporation inhibitor which is prepared has extensive application prospect in water resource protection field, has great significance for solving the problem of water scarcity in arid area and reducing water resource loss, and can bring out enormous economic benefits and social benefits.

Description

technical field [0001] The invention relates to the field of water resource protection, and more specifically relates to a method for preparing a composite liquid film that inhibits water evaporation in a large area of ​​water by using a solution method. Background technique [0002] Water resources are the source of life and an indispensable element of the ecosystem. Together with land and energy, they constitute the basic conditions for human economic and social development. With the growth of population and economy, the demand for water resources in the world is increasing, and the water environment is also deteriorating. The shortage of water resources has become a global issue of common concern. In January 1997, the United Nations pointed out in the report "Comprehensive Evaluation of the World's Fresh Water Resources" that the problem of water shortage will seriously restrict the economic and social development in the 21st century, and may lead to conflicts among count...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/00B01J19/16
CPCY02P20/141
Inventor 吴燕衣守志肖蕊
Owner TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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