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Compound type dust inhibiting and sand solidifying agent and preparation method thereof

A compound sand-fixing agent technology, applied in the field of dust suppressants, can solve the problems of pollution threat, difficult preparation, complicated processing technology, etc., and achieve the effect of convenient use

Inactive Publication Date: 2016-04-20
SHANXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the wetting dust suppressants are surfactants and inorganic salts, the scope of application is small, the effective dust suppression time is short, and the inorganic salts are mostly acidic, which is easy to cause secondary pollution to the environment
Adhesive dust suppressants mainly include asphalt, residual oil, coal tar, heavy oil, etc. These materials have a strong odor and pose potential pollution threats to the surrounding environment, soil and groundwater, and the processing technology is complicated and the cost is high
Agglomeration-type dust suppressants are mainly super-absorbent polymer resin materials, which have good dust suppression effects, but are expensive and difficult to prepare
The composite chemical dust suppressant integrates the functions of wetting, bonding and coagulation into one, and has a remarkable dust suppression effect and a wide range of applications. It has become the development trend of dust suppressants, but there are few such products in China.

Method used

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  • Compound type dust inhibiting and sand solidifying agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Take 20g of styrene, 20g of butyl acrylate, and 2g of acrylic acid in the same container, stir to mix evenly, and obtain monomer mixture A;

[0025] (2) Dissolve 0.3g of ammonium persulfate and 0.2g of sodium styrene sulfonate with 10g of deionized water to obtain a mixed solution B of initiator and reactive emulsifier;

[0026] (3) Add 100 g of deionized water to a reaction vessel equipped with a stirring device and a reflux condensing device, and stir to raise the temperature to 80°C; after the temperature stabilizes, add 25% of the monomer mixture A and 25% obtained in step (1). % of the mixed solution B obtained in step (2); seed emulsion polymerization for 20-30 minutes, start to drop the remaining monomer mixed solution A and mixed solution B, and drop it within 1-5 hours; heat up to 85-90°C and keep warm Stop the reaction for 1 hour; when the system is cooled to room temperature, adjust the pH value to 7-8 with ammonia water to obtain an acrylate emulsion;

...

Embodiment 2

[0030] (1) Take 15g of methyl methacrylate, 15g of ethyl acrylate, 5g of butyl acrylate, 2g of acrylic acid and 0.5g of acrylamide in the same container, stir to mix evenly, and obtain monomer mixture A;

[0031] (2) Dissolve 0.3g of initiator ammonium persulfate, 0.2g of sodium styrene sulfonate, 0.3g of allyloxy nonylphenol polyoxyethylene ether ammonium sulfate with 10g deionized water to obtain initiator and reactive Mixed solution B of emulsifier;

[0032] (3) Add 100 g of deionized water to a reaction vessel equipped with a stirring device and a reflux condensing device, stir and heat up to 80° C.; after the temperature stabilizes, add 5% of the monomer mixture A and 5 obtained in step (1). % of the mixed solution B obtained in step (2); seed emulsion polymerization for 20-30 minutes, start to drop the remaining monomer mixed solution A and mixed solution B, and drop it within 1-5 hours; heat up to 85-90°C and keep warm Stop the reaction for 1 hour; when the system is c...

Embodiment 3

[0036] The composite dust suppression and sand fixation agent prepared in Examples 1 and 2 was compared with the commercially available dust suppression agent at room temperature, and the results are shown in Table 1. The main components of commercially available dust suppressant 1 are sodium silicate, phosphoric acid, and calcium chloride; the main components of commercially available dust suppressant 2 are sodium lignosulfonate and sodium silicate.

[0037] Evaluation of dilution stability: Dilute the composite dust suppressant and sand fixation agent prepared in Examples 1 and 2 and the commercially available dust suppressant 1 and 2 with water at a ratio of 1:100, respectively.

[0038] Evaluation of chemical stability: In a test tube, add 5mL of dust suppressant liquid, then add 5% CaCl 2 Solution 1mL, mix well, place at room temperature for 48h, observe whether there is precipitation, flocculation, stratification and other phenomena.

[0039] Evaluation of moisture rete...

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Abstract

The invention discloses a compound type dust inhibiting and sand solidifying agent and a preparation method thereof. The preparation method of the compound type dust inhibiting and sand solidifying agent comprises the following step: preparing acrylate emulsion by adopting a seeded emulsion polymerization method by taking styrene and methyl methacrylate as hard monomers, butyl acrylate, ethyl acrylate and methyl acrylate as soft monomers, acrylic acid, methylacrylic acid and acrylamide as functional monomers and ammonium persulphate and potassium persulphate as initiating agents, selecting a reactive emulsifier, taking water as a dispersion medium. Polyvinyl alcohol solution and an inorganic material are added in emulsion, so that the compound type dust inhibiting and sand solidifying agent is obtained. The obtained compound type dust inhibiting and sand solidifying agent has good stability, can be directly diluted with water, is easy to use and low in cost and has good dust inhibiting and sand solidifying effect and broad application prospect.

Description

technical field [0001] The invention relates to the technical field of dust suppressants, in particular to a composite dust suppressant and sand fixer and a preparation method thereof. The dust suppression and sand fixation agent is mainly used in arid areas, desert areas, coal yards, mining areas, construction sites, and transportation lines to suppress the flying of dust and sand. Background technique [0002] In recent years, dust and sand pollution has been a problem that plagues the whole society, especially in the arid areas, desert areas, coal yards, mining areas, construction sites, and transportation lines in northern my country. At present, the method of sprinkling water is often used to suppress dust, and water is used to moisten fine dry dust particles to increase their density and bond them into larger particles, which cannot fly under the action of external force. This method is simple and easy, but the binding force between dust and water is weak, moisture is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F212/08C08F220/18C08F220/06C08F220/56C08F212/14C08F228/02C08L25/06C08L29/04C08L33/12C08L33/10C08K3/22C08K3/26C09K17/22
CPCC08F212/08C08F220/14C08F220/18C08L25/06C08L29/04C09K17/22C08K2003/2206C08L33/12C08K2003/265C08L33/08C08F220/1804C08F220/06C08F212/14C08F220/56C08F228/02
Inventor 尚成新苏禹铭秦鹰
Owner SHANXI UNIV
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