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A comb-shaped polymer sand-fixing and water-retaining agent and its preparation method

A comb-shaped polymer and water-retaining agent technology, which is applied in chemical instruments and methods, applications, organic fertilizers, etc., can solve the problems of easy aging, low strength, small penetration depth, etc., and achieve simple production process, good durability, The effect of high sand-fixing strength

Inactive Publication Date: 2014-10-08
SHANXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Petroleum products are mainly used for sand-fixing emulsified asphalt. Emulsified asphalt can maintain water during sand-fixing, but the penetration depth is small, and only a thin sealing layer can be formed on the sand surface. The strength is not high and it is easy to age.

Method used

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  • A comb-shaped polymer sand-fixing and water-retaining agent and its preparation method
  • A comb-shaped polymer sand-fixing and water-retaining agent and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Heat 20 parts of APEG2400, 20 parts of tetramethoxysilane and 0.05 parts of p-toluenesulfonic acid to 100°C, react at this temperature for 4 hours, and distill off excess tetramethoxysilane and methanol produced by the reaction under reduced pressure. 21.3 parts of macromonomer were obtained.

[0024] Put 20 parts of the macromonomer obtained in the above steps into the reaction vessel, add 200 parts of water, 30 parts of vinyl acetate, 20 parts of butyl acrylate and 10 parts of acrylamide, add 0.1 part of emulsifier, and heat up to 80°C , add 40 parts of 5% ammonium persulfate aqueous solution dropwise, the dropwise addition is completed in 180 minutes, keep the reaction at 80°C for 240 minutes, and cool down to obtain a comb-shaped polymer sand-fixing and water-retaining agent.

Embodiment 2

[0026] Heat 20 parts of HPEG2400, 20 parts of tetramethoxysilane and 0.05 part of p-toluenesulfonic acid to 90°C, react at this temperature for 5 hours, and distill off excess tetramethoxysilane and methanol produced by the reaction under reduced pressure. 21.3 parts of macromonomer were obtained.

[0027] Put 20 parts of the macromonomer obtained in the above steps into the reaction vessel, add 200 parts of water, 30 parts of vinyl acetate, 20 parts of butyl acrylate and 10 parts of acrylamide, add 0.5 parts of emulsifier, and heat up to 70°C , add 40 parts of 5% ammonium persulfate aqueous solution dropwise, the dropwise addition is completed in 180 minutes, keep the reaction at 80°C for 210 minutes, cool down, and obtain a comb-shaped polymer sand-fixing and water-retaining agent.

Embodiment 3

[0029] Heat 20 parts of TPEG2400, 20 parts of tetramethoxysilane and 0.05 parts of p-toluenesulfonic acid to 80°C, react at this temperature for 6 hours, and distill off excess tetramethoxysilane and methanol produced by the reaction under reduced pressure. 21.3 parts of macromonomer were obtained.

[0030] Put 20 parts of the macromonomer obtained in the above steps into the reaction vessel, add 200 parts of water, 30 parts of vinyl acetate, 20 parts of butyl acrylate and 10 parts of acrylamide, add 1 part of emulsifier, and raise the temperature to 60°C , add 40 parts of 5% ammonium persulfate aqueous solution dropwise, the dropwise addition is completed in 180 minutes, keep the reaction at 80°C for 180 minutes, and cool down to obtain a comb-shaped polymer sand-fixing and water-retaining agent.

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Abstract

The invention provides a preparation method of a comb type high-molecular sand fixation and water retaining agent, comprising the following steps of: firstly, adding alkyl vinyl polyglycol ether, tetraethyl orthosilicate and catalyst p-toluenesulfonic acid into a reaction vessel, at the temperature of 50-150 DEG C, reacting for 2-10 hours, removing the solvent by vacuum evaporation to get the macromonomer; then, mixing vinyl acetate, butyl acrylate and acrylamide to get the polymerized small monomer; and finally, adding the macromonomer into the reaction vessel, adding the polymerized small monomer, water and emulsifying agent, heating up to 60-80 DEG C, dropping 40-100 parts of 5% ammonium persulfate water solution, finishing dropping within 180 minutes, preserving heat for reaction for 180-240 minutes, cooling, and obtaining the comb type high-molecular sand fixation and water retaining agent. For the comb type high-molecular sand fixation and water retaining agent, the production technology is clean and environment-friendly, and the production process is simple and convenient; the prepared comb type high-molecular sand fixation and water retaining agent forms cross-linked network with the sandy soil, and can realize higher sand fixation strength with low dosage; and the comb type high-molecular sand fixation and water retaining agent is high in strength and excellent in durability.

Description

technical field [0001] The invention relates to the technical field of chemical sand-fixing agents, in particular to a comb-shaped polymer sand-fixing and water-retaining agent and a preparation method thereof. technical background [0002] Due to climate, landform and other geographical conditions and the impact of long-term high-intensity human activities, the problem of land degradation in the arid regions of Northwest my country and the Loess Plateau has become increasingly serious. The main manifestations are a series of ecological problems such as soil erosion, grassland desertification, rocky desertification, debris flow, etc., especially land desertification is the most prominent. In my country, the desert area reaches 1.308 million square kilometers, accounting for about 13% of the total land area. Whether it is from the economic aspect or the ecological environment protection aspect, the significance of desertification control is very great. [0003] The most thor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F283/06C08F218/08C08F220/18C08F220/56C09K17/18
Inventor 刘勇王建华秦作栋张红王兴
Owner SHANXI UNIV
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