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Novel polymer sand fixing agent

A technology of sand-fixing agent and polymer, which is applied in the field of new-type polymer sand-fixing agent and its synthesis, can solve the problem of high cost of sand-fixing agent, achieve good application value and promotion prospect, improve the effect of pressure resistance and strong mechanical operability

Inactive Publication Date: 2009-07-22
BEIJING UNIV OF CHEM TECH
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  • Abstract
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Problems solved by technology

[0003] In order to solve the problem of high cost of existing sand-fixing agents, the present invention provides a synthesis method of a new type of polymer sand-fixing agent, which has the advantages of good placement stability, non-toxicity, good cohesiveness, good moisture absorption and water retention, and high temperature resistance and other characteristics, the preparation process is simple, and the production cost is low

Method used

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  • Novel polymer sand fixing agent
  • Novel polymer sand fixing agent
  • Novel polymer sand fixing agent

Examples

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Embodiment 1

[0018] a. to dissolve, to mix

[0019] Take 40 parts of deionized water and 0.9 parts of polyvinyl alcohol and put them into the reactor to heat and stir to dissolve them. When the temperature drops to 50°C, add 0.3 parts of sodium dodecylbenzenesulfonate and 0.9 parts of Tween-600, and stir to make them fully mix;

[0020] b. Pre-emulsification

[0021] Add 2.5 parts of butyl acrylate and 5 parts of vinyl acetate to the above mixture, and stir at 50°C for 20 minutes;

[0022] c. Polymerization

[0023] Raise the temperature of the above mixture to 60-70°C, add 5 parts of 1.5% potassium persulfate solution, initiate the reaction for 30-40 minutes, then raise the temperature to 75-85°C, add dropwise 15 parts of 1.5% potassium persulfate solution and 7.5 parts of acrylic acid Mix monomers of butyl ester and 15 parts of vinyl acetate, keep the initiator and the monomer mixture dripped out synchronously, react for 4 hours, then raise the temperature to 85-95°C and keep it for 1...

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Abstract

The invention relates to a sand-fixing agent preparation method field and the environmental protection field, which essentially adopts seed emulsion polymerization technology to synthesize the butyl acrylate-modified polyvinyl acetate emulsion sand-fixing agent and is used for fixing the sand.

Description

technical field [0001] The invention belongs to the field of chemical sand fixing, and in particular relates to a novel polymer sand fixing agent and a synthesis method thereof. Background technique [0002] One of the biggest environmental-socioeconomic problems facing the world today is land desertification. The rapid expansion of desertified land has caused environmental degradation and huge economic losses, and even caused social problems in some areas, which has gradually become a hot spot of global concern. The annual direct economic loss caused by desertification to our country is as high as tens of billions of yuan, which seriously restricts the development of social economy and becomes a national or even international major ecological and environmental problem. To curb the increasingly rampant trend of desertification, it is necessary to carry out sand fixation, and currently the most researched is chemical sand fixation. Chemical sand fixation is the use of chemi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/20
Inventor 彭雷张丽丹韩春英赵开径
Owner BEIJING UNIV OF CHEM TECH
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