Construction dust depressor and preparation method thereof

A technology of building construction and dust suppressant, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of poor stability of high-valent ions, less than 30% dust reduction efficiency, and difficult wetting of fine particles, so as to achieve prolonged effective Action time, suitable for large-scale promotion and use, and the effect of improving ion stability

Active Publication Date: 2016-10-12
加翎加(天津)环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003]Sprinkling water is the most commonly used dust suppression method, which is simple and easy to implement. However, due to the high surface tension of water, fine particles are not easy to wet, and the dust suppression efficiency is less than 30%. low resource utilization
CN104693339 discloses a dust suppressant suitable for urban roads. The invention is formed by copolymerization of unsaturated acid and unsaturated ester through aqueous solution. The monomer raw materials used are traditional small molecules, and the molecular weight of the monomer is lower than 100. The steric hindrance of the molecular structure of the formed polymer dust suppressant is very small, the stability to high-valent ions such as calcium and magnesium is not good, and the advantage in dust suppression on construction sites is not obvious

Method used

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  • Construction dust depressor and preparation method thereof
  • Construction dust depressor and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0034] The number of parts by mass is in grams, 20 grams of acrylic acid is used as unsaturated carboxylic acid material, the aqueous solution of 5 grams of sodium vinylsulfonate is used as unsaturated sulfonic acid material, and 5 grams of methoxy polyoxyethylene acrylate (molecular weight 400) is used as unsaturated sulfonic acid material. Saturated polyether materials are mixed according to the amount used as a raw material mixture for later use. Add 100 grams of distilled water into the four-port reactor, and replace with nitrogen for 40 minutes with the help of stirring. When the temperature of the water bath is raised to 85°C, continuously add the aforementioned raw material mixture dropwise to control the progress of the dropwise addition, and the dropwise addition is completed in 3.0 hours. Meanwhile, 3 grams of ammonium persulfate aqueous solution with a mass concentration of 10% was added dropwise (time synchronization). Raise the temperature to 90°C and keep it warm...

Embodiment 2

[0038] The number of parts by mass is in grams, with 17 grams of acrylic acid and 5 grams of methacrylic acid as the unsaturated carboxylic acid material, the aqueous solution of 6 grams of 2-acrylamide-2-methylpropanesulfonic acid as the unsaturated sulfonic acid material, and 5 grams of alkene Propyl polyoxyethylene ether (molecular weight 1500) is used as an unsaturated polyether material, and is mixed according to the amount used as a raw material mixture for subsequent use. Add 100 grams of distilled water into the four-port reactor, replace with nitrogen for 40 minutes with the help of stirring, raise the temperature of the water bath to 85°C, and continuously add the aforementioned raw material mixture dropwise, control the progress of the dropwise addition, and complete the dropwise addition in 3.5 hours. Meanwhile, 6 grams of potassium persulfate aqueous solution with a mass concentration of 3% was added dropwise at the same time. Raise the temperature to 90°C and kee...

Embodiment 3

[0041]The implementation steps are the same as in Example 2, except that the unsaturated carboxylic acid is replaced by 19 grams of acrylic acid and 3 grams of itaconic acid by 17 grams of acrylic acid and 5 grams of methacrylic acid.

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Abstract

The invention discloses a construction dust depressor and a preparation method thereof. According to the dust depressor, unsaturated carboxylic acid, unsaturated sulfonic acid and unsaturated polyether are adopted as monomer raw materials, a neutralizer and an initiator are adopted as auxiliary raw materials, and the dust depressor is prepared through an aqueous solution copolymerization technology. Ionic stability of the dust depressor is improved through the non-ionicity of unsaturated polyether monomers, the adaptability of the dust depressor to cement, concrete and residue soil dust is improved, and the prepared dust depressor can be diluted with water to be sprayed and used and is good in comprehensive performance, safe and environmentally friendly.

Description

technical field [0001] The invention relates to a polymer dust suppressant in the field of dust control on building construction sites, in particular to a water-soluble polymer dust suppressant and a preparation method thereof. Background technique [0002] With the continuous acceleration of urban development and the continuous increase of economic scale, the problem of ambient air quality has become increasingly prominent. Dust pollution endangers the surrounding environment and seriously affects the normal production order and quality of life. Inhalable particulate matter PM10 and fine particulate matter PM2.5 are easy to enrich heavy metal ions, organic oxides, bacteria and viruses, which are extremely harmful to the human body. The dust at the construction site comes from the loading and unloading of sand and lime materials, geotechnical excavation, scattered vehicles, and wind erosion dust from bare ground, muck and storage yards. [0003] Sprinkling water for dust s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/06C08F220/06C08F228/02C08F220/58C08F222/02C09K3/22
CPCC08F283/065C09K3/22C08F220/585
Inventor 王娟
Owner 加翎加(天津)环境科技有限公司
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