CN113185631A - Pavement dust suppressant and preparation method thereof - Google Patents
Pavement dust suppressant and preparation method thereof Download PDFInfo
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- CN113185631A CN113185631A CN202110466318.9A CN202110466318A CN113185631A CN 113185631 A CN113185631 A CN 113185631A CN 202110466318 A CN202110466318 A CN 202110466318A CN 113185631 A CN113185631 A CN 113185631A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/04—Acids; Metal salts or ammonium salts thereof
- C08F220/06—Acrylic acid; Methacrylic acid; Metal salts or ammonium salts thereof
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/14—Methyl esters, e.g. methyl (meth)acrylate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/20—Esters of polyhydric alcohols or phenols, e.g. 2-hydroxyethyl (meth)acrylate or glycerol mono-(meth)acrylate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/52—Amides or imides
- C08F220/54—Amides, e.g. N,N-dimethylacrylamide or N-isopropylacrylamide
- C08F220/56—Acrylamide; Methacrylamide
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F228/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a bond to sulfur or by a heterocyclic ring containing sulfur
- C08F228/02—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a bond to sulfur or by a heterocyclic ring containing sulfur by a bond to sulfur
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- C—CHEMISTRY; METALLURGY
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- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/22—Materials not provided for elsewhere for dust-laying or dust-absorbing
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- Chemical Kinetics & Catalysis (AREA)
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- Road Paving Structures (AREA)
Abstract
The invention discloses a pavement dust suppressant and a preparation method thereof, belonging to the pavement dust suppressant and comprising the following steps of S1: mixing unsaturated acid, unsaturated acid ester and cross-linking agent to obtain raw material mixed liquor for later use; s2: adding water into a reactor provided with a stirrer, a thermometer, a dropping funnel and a nitrogen guide pipe, starting stirring, replacing nitrogen or argon for 15-20 minutes, and heating in a water bath; s3: heating to 60-90 deg.C, adding initiator, and adding the raw material mixture; the adding mode of the raw material mixed solution is batch adding or continuous dropwise adding; s4: after the raw material mixed solution is completely added, preserving the heat for 0.5 to 2.5 hours at the temperature of between 60 and 100 ℃; s5: centrifuging the mixed solution prepared in step S4; the water-based dust suppressant realizes efficient synergy of functions such as wetting, moisturizing, condensation and the like through process optimization. After spraying, the shell layer formed on the surface of the dust particle by the polymer dust suppressant is similar to tarpaulin in the traditional sense, and the weathering resistance is good.
Description
Technical Field
The invention relates to the technical field of pavement dust depressors, in particular to a pavement dust depressor and a preparation method thereof.
Background
The industrialization degree is accelerated continuously, the urban scale is enlarged continuously, the problems of dust pollution caused by coal yard stacking, coal combustion, mineral processing, construction and motor vehicles to urban roads are increasingly obvious, and the haze weather is frequent and has longer duration. The dust pollution harms the surrounding environment, and influences the normal production order and the quality of life. The inhalable particles (PM10) and the fine particles (PM2.5) are rich in a large amount of heavy metal ions, organic oxides, bacteria and viruses, and the PM2.5 particles enter bronchioles and alveoli due to the inability of nasal cavities and throats to block, so that the PM2.5 particles are extremely harmful to human bodies and are prominently manifested as teratogenesis, carcinogenesis and mutagenicity.
Sprinkling is the most common dust suppression method in our country, and its main function is to increase the moisture content of dry dust by wetting, increase density and bind into larger particles. The operation of sprinkling is simple, but the ice is easy to freeze in winter, the evaporation is fast in summer, the effective dust suppression time is less than half an hour, and the water consumption is large. The dust content after evaporation of the water increased dramatically by 600%.
Therefore, a new pavement dust suppressant and a preparation method thereof are needed to be designed to solve the technical problems.
Disclosure of Invention
The invention aims to solve the technical problems in the prior art, provides a pavement dust suppressant and a preparation method thereof, and adopts the following basic concept: a pavement dust suppressant and a preparation method thereof, comprising the following components: unsaturated acid: 6 to 15 percent; unsaturated acid ester: 2% -8%; a crosslinking agent: 0.5% -0.9%; initiator: 0.5% -2%; water: 20% -80%; the method also comprises an alkaline neutralizing agent, wherein the amount of the alkaline neutralizing agent is used for adjusting the pH value of the reaction system to 7.0-9.0; wherein, the unsaturated acid is one of acrylic acid, methacrylic acid, vinyl sulfonic acid, 2-acrylamide and sodium salt thereof; the unsaturated acid ester is one of methyl acrylate, hydroxyethyl acrylate and hydroxypropyl acrylate; the water is sterile water.
In order to greatly improve the preparation capacity of the pavement dust suppressant, the pavement dust suppressant and the preparation method thereof are preferably S1: mixing unsaturated acid, unsaturated acid ester and cross-linking agent to obtain raw material mixed liquor for later use; s2: adding water into a reactor provided with a stirrer, a thermometer, a dropping funnel and a nitrogen guide pipe, starting stirring, replacing nitrogen or argon for 15-20 minutes, and heating in a water bath; s3: heating to 60-90 deg.C, adding initiator, and adding the raw material mixture; the adding mode of the raw material mixed solution is batch adding or continuous dropwise adding; s4: after the raw material mixed solution is completely added, preserving the heat for 0.5 to 2.5 hours at the temperature of between 60 and 100 ℃; s5: centrifuging the mixed solution prepared in step S4; s6: filtering the mixed solution after the centrifugation prepared in the step S5; s7: cooling to room temperature, adjusting the pH value of the reaction system to 6.0-9.0 by using an alkaline neutralizing agent, and discharging to obtain the pavement dust suppressant.
In order to greatly improve the application range of the pavement dust suppressant, the pavement dust suppressant and the preparation method thereof are preferably mixed and injected into a sprayer or a spraying vehicle according to the mass ratio of 1:10, and when the pavement dust suppressant is used on site, the dust suppressant diluent is uniformly sprayed on the surfaces of urban roads and sidewalks according to the use amount of 1.0-2.5kg/m2 roads.
In order to greatly improve the use safety of the pavement dust suppressant, the pavement dust suppressant and the preparation method thereof are preferably prepared by diluting the dust suppressant with water in a ratio of 1: 5.
In order to greatly improve the dust suppression effect of the pavement dust suppressant, the temperature for heat preservation in step S4 is preferably 60-95 ℃ as one pavement dust suppressant and the preparation method thereof.
In order to greatly improve the mixing effect of the pavement dust suppressant, it is preferable that the addition time of the raw material mixture in step S3 is 1.5 to 2.0 hours as one pavement dust suppressant of the present invention and the preparation method thereof.
In order to greatly improve the dust suppression effect of the pavement dust suppressant, it is preferable that the polymerization temperature in step S3 is 60-70 ℃ as one of the pavement dust suppressant and the preparation method thereof of the present invention.
In order to greatly improve the preparability of the alkaline neutralizing agent, the preferred pavement dust suppressant and the preparation method thereof are that the alkaline neutralizing agent is one or two of sodium hydroxide, potassium hydroxide and triethanolamine, and the mass concentration of the alkaline neutralizing agent solution is 6-7%.
In order to greatly improve the preparability of the initiator, the pavement dust suppressant and the preparation method thereof are preferred, the initiator is one or two of ammonium persulfate, potassium persulfate and hydrogen peroxide or sodium sulfite, and the mass concentration of the initiator solution is 6-8%.
In order to greatly improve the preparability of the crosslinking agent, the pavement dust suppressant and the preparation method thereof are preferably used, and the crosslinking agent is one or two of glycol diacrylate and pentaerythritol trimethacrylate.
After the technical scheme is adopted, compared with the prior art, the invention has the following beneficial effects.
The invention provides a pavement dust suppressant and a preparation method thereof, wherein the preparation method comprises the following steps of S1: mixing unsaturated acid, unsaturated acid ester and cross-linking agent to obtain raw material mixed liquor for later use; s2: adding water into a reactor provided with a stirrer, a thermometer, a dropping funnel and a nitrogen guide pipe, starting stirring, replacing nitrogen or argon for 15-20 minutes, and heating in a water bath; s3: heating to 60-90 deg.C, adding initiator, and adding the raw material mixture; the adding mode of the raw material mixed solution is batch adding or continuous dropwise adding; s4: after the raw material mixed solution is completely added, preserving the heat for 0.5 to 2.5 hours at the temperature of between 60 and 100 ℃; s5: centrifuging the mixed solution prepared in step S4; s6: filtering the mixed solution after the centrifugation prepared in the step S5; s7: cooling to room temperature, adjusting the pH value of a reaction system to 6.0-9.0 by using an alkaline neutralizing agent, and discharging to obtain the pavement dust suppressant. After spraying, the shell layer formed on the surface of the dust particle by the polymer dust suppressant is similar to tarpaulin in the traditional sense, and the weathering resistance is good.
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FIG. 1 is a schematic flow chart of a pavement dust suppressant and a preparation method thereof.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Referring to fig. 1, the present invention provides a technical solution: a pavement dust suppressant and a preparation method thereof, comprising the following components: unsaturated acid: 6 to 15 percent; unsaturated acid ester: 2% -8%; a crosslinking agent: 0.5% -0.9%; initiator: 0.5% -2%; water: 20% -80%; the method also comprises an alkaline neutralizing agent, wherein the amount of the alkaline neutralizing agent is used for adjusting the pH value of the reaction system to 7.0-9.0; wherein, the unsaturated acid is one of acrylic acid, methacrylic acid, vinyl sulfonic acid, 2-acrylamide and sodium salt thereof; the unsaturated acid ester is one of methyl acrylate, hydroxyethyl acrylate and hydroxypropyl acrylate; the water is sterile water.
In this embodiment: the aqueous dust suppressant does not contain expensive metal ions such as Cu2+, heavy metal ions such as Hg2+, and corrosive inorganic substances such as calcium chloride and aluminum chloride. The water-based dust suppressant has no corrosion problem to metals and traffic vehicles, has reliable construction safety and use safety, does not contain high-valence metal ions such as copper, calcium, aluminum and the like, and the carboxylic acid and the sulfonic acid derivative provide sufficient moisturizing effect for the shell layer.
As a technical optimization scheme of the present invention, S1: mixing unsaturated acid, unsaturated acid ester and cross-linking agent to obtain raw material mixed liquor for later use; s2: adding water into a reactor provided with a stirrer, a thermometer, a dropping funnel and a nitrogen guide pipe, starting stirring, replacing nitrogen or argon for 15-20 minutes, and heating in a water bath; s3: heating to 60-90 deg.C, adding initiator, and adding the raw material mixture; the adding mode of the raw material mixed solution is batch adding or continuous dropwise adding; s4: after the raw material mixed solution is completely added, preserving the heat for 0.5 to 2.5 hours at the temperature of between 60 and 100 ℃; s5: centrifuging the mixed solution prepared in step S4; s6: filtering the mixed solution after the centrifugation prepared in the step S5; s7: cooling to room temperature, adjusting the pH value of the reaction system to 6.0-9.0 by using an alkaline neutralizing agent, and discharging to obtain the pavement dust suppressant.
In this embodiment: the dust suppressant prepared by the method does not relate to high temperature and high pressure, does not discharge three wastes, is suitable for large-scale popularization and application, and realizes efficient synergy of functions of wetting, moisturizing, condensing and the like. After spraying, the shell layer formed on the surface of the dust particle by the polymer dust suppressant is similar to tarpaulin in the traditional sense, and the weathering resistance is good.
As a technical optimization scheme of the invention, the dust suppressant is mixed and injected into a sprayer or a spraying vehicle according to the mass ratio of 1:10, and when the dust suppressant is used on site, the dust suppressant diluent is uniformly sprayed on the surfaces of urban roads and sidewalks according to the using amount of 1.0-2.5kg/m2 roads.
In this embodiment: the user can use the dust suppressant prepared by the invention in each place according to specific use conditions, thereby improving the use range of the pavement dust suppressant.
As a technical optimization scheme of the invention, the dust suppressant is diluted with water according to the proportion of 1: 5.
In this embodiment: the optimal proportion is 1:1, and the specific protection proportion of the dust suppressant is determined according to the environment needing dust suppression actually.
As a technical optimization scheme of the invention, the temperature for heat preservation in the step S4 is 60-95 ℃.
In this embodiment: the heat preservation at 60-95 ℃ can improve the dust suppression effect of the pavement dust suppressant.
As a technical optimization scheme of the invention, the adding time of the raw material mixed liquid in the step S3 is 1.5-2.0 hours.
In this embodiment: the mixing time of 1.5-2.0 hours can further improve the mixing effect of the pavement dust suppressant.
As a technical optimization of the present invention, the temperature of the polymerization reaction in step S3 is 60-70 ℃.
In this embodiment: the precise control of the polymerization reaction can improve the dust suppression effect of the dust suppressant prepared by the invention.
As a technical optimization scheme of the invention, the alkaline neutralizer is one or two of sodium hydroxide, potassium hydroxide and triethanolamine, and the mass concentration of the alkaline neutralizer solution is 6-7%.
In this embodiment: the alkaline neutralizing agent can improve the producibility of the alkaline neutralizing agent.
As a technical optimization scheme of the invention, the initiator is one or two of ammonium persulfate, potassium persulfate and hydrogen peroxide or sodium sulfite, and the mass concentration of the initiator solution is 6-8%.
In this embodiment: the initiator can improve the preparability of the alkaline neutralizing agent.
As a technical optimization scheme of the invention, the cross-linking agent is one or two of glycol diacrylate and pentaerythritol trimethacrylate.
In this embodiment: the crosslinking agent can improve the producibility of the basic neutralizing agent.
The working principle is as follows:
the invention provides a pavement dust suppressant and a preparation method thereof, wherein the preparation method comprises the following steps of S1: mixing unsaturated acid, unsaturated acid ester and cross-linking agent to obtain raw material mixed liquor for later use; s2: adding water into a reactor provided with a stirrer, a thermometer, a dropping funnel and a nitrogen guide pipe, starting stirring, replacing nitrogen or argon for 15-20 minutes, and heating in a water bath; s3: heating to 60-90 deg.C, adding initiator, and adding the raw material mixture; the adding mode of the raw material mixed solution is batch adding or continuous dropwise adding; s4: after the raw material mixed solution is completely added, preserving the heat for 0.5 to 2.5 hours at the temperature of between 60 and 100 ℃; s5: centrifuging the mixed solution prepared in step S4; s6: filtering the mixed solution after the centrifugation prepared in the step S5; s7: cooling to room temperature, adjusting the pH value of the reaction system to 6.0-9.0 by using an alkaline neutralizing agent, and discharging to obtain the pavement dust suppressant;
wherein, the water-based dust suppressant adopts reactive raw materials such as acrylic acid and the like, and is polymerized by an aqueous solution copolymerization technology. The environment-friendly oil-water separator does not contain volatile low-molecular organic matters such as glycerin, ethylene glycol and residual oil, has no secondary pollution and has good environmental safety. Wherein, the copolymerization temperature avoids the product from generating gel (losing water solubility and fluidity) or unstable composition (the weathering resistance is reduced); the dosage of the unsaturated acid ester not only avoids the reduction of the water solubility of the product, but also overcomes the reduction of the weathering resistance;
thereby realizing the high-efficiency synergy of functions of wetting, moisture retention, agglomeration and the like. After spraying, a shell layer formed on the surface of the fine dust by the polymer dust suppressant is similar to tarpaulin in the traditional sense, and the weathering resistance is good;
the water-based dust suppressant realizes efficient synergy of functions such as wetting, moisturizing, condensation and the like through process optimization. After spraying, the shell layer formed on the surface of the dust particle by the polymer dust suppressant is similar to tarpaulin in the traditional sense, and the weathering resistance is good.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A pavement dust suppressant and a preparation method thereof are characterized in that: the pavement dust suppressant comprises the following components: unsaturated acid: 6 to 15 percent; unsaturated acid ester: 2% -8%; a crosslinking agent: 0.5% -0.9%; initiator: 0.5% -2%; water: 20% -80%;
the method also comprises an alkaline neutralizing agent, wherein the amount of the alkaline neutralizing agent is used for adjusting the pH value of the reaction system to 7.0-9.0;
wherein, the unsaturated acid is one of acrylic acid, methacrylic acid, vinyl sulfonic acid, 2-acrylamide and sodium salt thereof; the unsaturated acid ester is one of methyl acrylate, hydroxyethyl acrylate and hydroxypropyl acrylate; the water is sterile water.
2. The pavement dust suppressant and the preparation method thereof according to claim 1, wherein: the method comprises the following steps:
s1: mixing unsaturated acid, unsaturated acid ester and cross-linking agent to obtain raw material mixed liquor for later use;
s2: adding water into a reactor provided with a stirrer, a thermometer, a dropping funnel and a nitrogen guide pipe, starting stirring, replacing nitrogen or argon for 15-20 minutes, and heating in a water bath;
s3: heating to 60-90 deg.C, adding initiator, and adding the raw material mixture; the adding mode of the raw material mixed solution is batch adding or continuous dropwise adding;
s4: after the raw material mixed solution is completely added, preserving the heat for 0.5 to 2.5 hours at the temperature of between 60 and 100 ℃;
s5: centrifuging the mixed solution prepared in step S4;
s6: filtering the centrifuged mixture prepared in step S5;
s7: cooling to room temperature, adjusting the pH value of the reaction system to 6.0-9.0 by using an alkaline neutralizing agent, and discharging to obtain the pavement dust suppressant.
3. The pavement dust suppressant and the preparation method thereof according to claim 1, wherein: the dust suppressant is mixed and injected into a sprayer or a spraying vehicle according to the mass ratio of 1:10, and when the dust suppressant is used on site, the dust suppressant diluent is uniformly sprayed on the surfaces of urban roads and pedestrian pavements according to the using amount of 1.0-2.5kg/m2 roads.
4. The pavement dust suppressant and the preparation method thereof according to claim 3, wherein: the dust suppressant is diluted with water according to the ratio of 1: 5.
5. The pavement dust suppressant and the preparation method thereof according to claim 2, wherein: the temperature maintained in the step S4 is 60-95 ℃.
6. The pavement dust suppressant and the preparation method thereof according to claim 2, wherein: the addition time of the raw material mixed liquid in the step S3 is 1.5 to 2.0 hours.
7. The pavement dust suppressant and the preparation method thereof according to claim 2, wherein: the temperature of the polymerization reaction in the step S3 is 60-70 ℃.
8. The pavement dust suppressant and the preparation method thereof according to claim 1, wherein: the alkaline neutralizing agent is one or two of sodium hydroxide, potassium hydroxide and triethanolamine, and the mass concentration of the alkaline neutralizing agent solution is 6-7%.
9. The pavement dust suppressant and the preparation method thereof according to claim 1, wherein: the initiator is one or two of ammonium persulfate, potassium persulfate and hydrogen peroxide or sodium sulfite, and the mass concentration of the initiator solution is 6-8%.
10. The pavement dust suppressant and the preparation method thereof according to claim 1, wherein: the cross-linking agent is one or two of ethylene glycol diacrylate and pentaerythritol trimethacrylate.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104693345A (en) * | 2015-03-30 | 2015-06-10 | 河北工业大学 | Polymer dispersion and preparation method thereof |
| CN104693339A (en) * | 2015-03-30 | 2015-06-10 | 河北工业大学 | Water-based dust depressor and preparation method thereof |
| CN106008851A (en) * | 2016-06-22 | 2016-10-12 | 加翎加（天津）环境科技有限公司 | Construction dust depressor and preparation method thereof |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104693345A (en) * | 2015-03-30 | 2015-06-10 | 河北工业大学 | Polymer dispersion and preparation method thereof |
| CN104693339A (en) * | 2015-03-30 | 2015-06-10 | 河北工业大学 | Water-based dust depressor and preparation method thereof |
| CN106008851A (en) * | 2016-06-22 | 2016-10-12 | 加翎加（天津）环境科技有限公司 | Construction dust depressor and preparation method thereof |
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