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Macromolecular environmentally-friendly sand-fixing dust suppressant

A technology of dust suppressant and polymer, which is applied in the field of polymer environment-friendly sand-fixing and dust-suppressing agent and its synthesis, can solve the problem of high price of sand-fixing agent, achieve good application prospect and promotion value, good stability and strong adaptability Effect

Inactive Publication Date: 2011-10-05
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of high price of the existing sand-fixing agent, the present invention provides a synthetic method of a high-molecular environment-friendly sand-fixing and dust-suppressing agent. Excellent water absorption and water retention performance, water and wind erosion resistance, frost resistance and temperature resistance, etc., the preparation process is simple, and the production cost is low

Method used

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  • Macromolecular environmentally-friendly sand-fixing dust suppressant
  • Macromolecular environmentally-friendly sand-fixing dust suppressant
  • Macromolecular environmentally-friendly sand-fixing dust suppressant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] a. to dissolve, to mix

[0028] Take 30 parts of deionized water and 1.05 parts of polyvinyl alcohol into the reactor, stir for 15 minutes, heat up to 85-90°C to make it almost completely dissolved, cool down to about 55°C, and then slowly add 20 parts of deionized water dissolved 0.9 parts of compound emulsifier, add 4 parts of vinyl acetate, and stir to make it fully mixed.

[0029] b. Pre-emulsification

[0030] After the mixed solution in the first step was vigorously stirred for 15 minutes, 2.5 parts of 2.4% ammonium persulfate solution was added, the temperature was raised to 60-65° C., and the reaction was carried out for 30 minutes.

[0031] c. Polymerization

[0032] When the mixed solution in the second step has blue light and less reflux, add the remaining 12 parts of vinyl acetate, all 8 parts of methyl methacrylate and 6 parts of butyl acrylate dropwise, and add 3-4 parts every 15 minutes. Drop the initiator and adjust the dropping speed to ensure that t...

Embodiment 2

[0034] a. to dissolve, to mix

[0035] Take 30 parts of deionized water and 1.05 parts of polyvinyl alcohol into the reactor, stir for 15 minutes, heat up to 85-90°C to make it almost completely dissolved, cool down to about 55°C, and then slowly add 20 parts of deionized water dissolved 0.12 parts of compound emulsifier, add 4 parts of vinyl acetate, and stir to make it fully mixed.

[0036] b. Pre-emulsification

[0037] After the mixed solution in the first step was vigorously stirred for 15 minutes, 2.5 parts of 2.4% ammonium persulfate solution was added, the temperature was raised to 60-65° C., and the reaction was carried out for 30 minutes.

[0038] c. Polymerization

[0039] When the mixed solution in the second step has blue light and less reflux, add the remaining 12 parts of vinyl acetate, all 8 parts of methyl methacrylate and 6 parts of butyl acrylate dropwise, and add 3-4 parts every 15 minutes. Drop the initiator and adjust the dropping speed to ensure that ...

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Abstract

The invention relates to the fields of sand-fixing agent preparation and environment protection. According to the invention, with vinylacetate (VAC) as a main monomer, methyl methacylate (MMA) as a hard monomer, butyl acrylate (BA) as a soft monomer, ammonium persulfate (APS) as an initiating agent, lauryl sodium sulfate and tween-60 as a complex emulsifying agent and water as a dispersion medium, a macromolecular environmentally-friendly sand-fixing dust suppressant, particularly a VAC / MMA / BA terpolymerization sand-fixing dust suppressant which is used for fixing sand, is prepared by emulsion polymerization without the use of any organic solvent.

Description

technical field [0001] The invention belongs to the field of chemical sand fixation, and in particular relates to a polymer environment-friendly sand fixation and dust suppression agent and a synthesis method thereof. Background technique [0002] Among the many problems faced by human beings in the world today, land desertification has become the most serious environmental and socio-economic problem, which seriously threatens people's living environment and is called the "cancer" of the earth. And China is one of the areas with the widest and deepest desertification hazards in the world. [0003] Although the prevention and control of desertification and desertification in my country has achieved remarkable results, the achievements in the current prevention and control work are only preliminary and staged, and the situation is still grim. The control of desertification has attracted more and more attention. At present, most of the research is on chemical sand fixation, wh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/20C09K3/22C08F218/08C08F220/14C08F220/18C08F2/24C09K105/00
Inventor 梁新景张丽丹韩春英
Owner BEIJING UNIV OF CHEM TECH
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