Cation fenugreek-humic acid sand curing agent and preparation method thereof

A technology of fenugreek gum and cations, applied in chemical instruments and methods, other chemical processes, applications, etc., can solve problems such as soil improvement and poor effect, and achieve the effects of low cost, convenient use and simple preparation process

Active Publication Date: 2018-11-20
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing chemical sand fixation method only relies on the cohesion between the sand fixation agent and the sand particles for sand

Method used

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  • Cation fenugreek-humic acid sand curing agent and preparation method thereof
  • Cation fenugreek-humic acid sand curing agent and preparation method thereof
  • Cation fenugreek-humic acid sand curing agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] (1) Starch cationic modification

[0041] Weigh 20 parts of starch, make a starch emulsion with an ethanol solution made of 25.5 parts of ethanol and 4.5 parts of water, pour it into a four-neck flask, stir, heat in a water bath to 70°C, and add 0.075mol / L sodium hydroxide ethanol solution Adjust the pH of the starch emulsion to be alkaline, add dropwise an etherification agent made of 1.4 parts of 3-chloro-2 hydroxypropyltrimethylammonium chloride and 0.6 parts of water, and control the system with 0.075 mol / L sodium hydroxide ethanol solution The pH is constant. After the reaction, the pH of the system is adjusted to 6 with 2.0 mol / L hydrochloric acid, and the quaternary ammonium salt type cationic starch product is obtained through dehydration, alcohol washing, drying and sieving.

[0042] (2) Synthesis of Hydrophobic Association Cationic Starch Solution

[0043] Add 15 parts of dried cationic starch and 28 parts of ethanol to a three-necked flask with a stirring de...

Embodiment 2

[0049] (1) Starch cationic modification

[0050] Weigh 20 parts of starch, make a starch emulsion with an ethanol solution made of 25.5 parts of ethanol and 4.5 parts of water, pour it into a four-neck flask, stir, heat in a water bath to 70°C, and add 0.075mol / L sodium hydroxide ethanol solution Adjust the pH of the starch emulsion to be alkaline, add an etherification agent made of 1.3 parts of 3-chloro-2 hydroxypropyltrimethylammonium chloride and 0.7 parts of water dropwise, and control the system with 0.075mol / L sodium hydroxide ethanol solution The pH is constant. After the reaction, the pH of the system is adjusted to 6 with 2.0 mol / L hydrochloric acid, and the quaternary ammonium salt type cationic starch product is obtained through dehydration, alcohol washing, drying and sieving.

[0051] (2) Synthesis of Hydrophobic Association Cationic Starch Solution

[0052] Add 15 parts of dried cationic starch and 28 parts of ethanol to a three-necked flask with a stirring devic...

Embodiment 3

[0058] (1) Starch cationic modification

[0059] Weigh 20 parts of starch, make a starch emulsion with an ethanol solution made of 25.5 parts of ethanol and 4.5 parts of water, pour it into a four-neck flask, stir, heat in a water bath to 70°C, and add 0.075mol / L sodium hydroxide ethanol solution Adjust the pH of the starch emulsion to be alkaline, add an etherification agent made of 1.35 parts of 3-chloro-2 hydroxypropyltrimethylammonium chloride and 0.65 parts of water dropwise, and control the system with 0.075 mol / L sodium hydroxide ethanol solution The pH is constant. After the reaction, the pH of the system is adjusted to 6 with 2.0 mol / L hydrochloric acid, and the quaternary ammonium salt type cationic starch product is obtained through dehydration, alcohol washing, drying and sieving.

[0060] (2) Synthesis of Hydrophobic Association Cationic Starch Solution

[0061] Add 15 parts of dried cationic starch and 28 parts of ethanol to a three-necked flask with a stirring ...

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Abstract

The invention provides a cation fenugreek-humic acid sand curing agent which is prepared by coating humic acid by hydrophobic association cation fenugreek, specifically, by taking cation fenugreek anda hydrophobing agent as reaction monomers, dissolving into a solvent, carrying out a grafting reaction under the action of an alkali catalyst, synthesizing a hydrophobing association cation fenugreeksolution, putting a humate solution into the hydrophobing association cation fenugreek, carrying out a reaction so as to obtain a coating, drying, and crushing, thereby obtaining the sand curing agent, wherein the hydrophobing agent is a long-chain organic matter which can be reacted with hydroxyl under an alkali condition. Due to an electrostatic function of cation of the sand curing agent and anion on the surfaces of sand grains, the purpose of fixing sand is achieved; the cation fenugreek has certain hydrophilicity and water retention properties, in addition, the humic acid self is rich inhydrophilic functional groups, and thus the sand curing agent has a water retention property; in addition, the humic acid self can be used as a soil conditioning agent, is capable of improving fertility of soil and thus is applicable to sand curing application.

Description

technical field [0001] The invention belongs to the field of chemical sand-fixing, and relates to a sand-fixing agent capable of water retention, sand-fixing and soil environment improvement, in particular to a cationic fenugreek-humic acid sand-fixing agent and a preparation method thereof. Background technique [0002] Desertification is one of the biggest environmental problems facing us. Sand-fixing agents are widely used for their functions of sand-fixing and dust-proofing. In the 1930s, chemical sand-fixing began to be studied, and in the 1950s, it was greatly developed. Up to now, more than 150 kinds of chemical sand-fixing agents have been developed, and some of them have been put into practice for sand prevention, sand fixation, and improvement of sandy land. . In the 1960s, certain achievements were made in chemical sand fixation technology. Traditional sand-fixing agents include: petroleum products, cement slurry, water glass, and high-molecular polymer superab...

Claims

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Application Information

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IPC IPC(8): C09K17/32C09K17/16C08B37/00C09K105/00
CPCC08B37/0087C09K17/16C09K17/32C09K2105/00
Inventor 王晨牛育华杨通马展费贵强秋列维朱晓斌
Owner SHAANXI UNIV OF SCI & TECH
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