CN111073598B - Preparation method and application of dust suppressant - Google Patents
Preparation method and application of dust suppressant Download PDFInfo
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- CN111073598B CN111073598B CN201911238162.8A CN201911238162A CN111073598B CN 111073598 B CN111073598 B CN 111073598B CN 201911238162 A CN201911238162 A CN 201911238162A CN 111073598 B CN111073598 B CN 111073598B
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Abstract
The invention relates to the technical field of environmental protection, and particularly relates to a preparation method of a dust suppressant and application of a water-soluble melamine high-molecular polymer in preparation of the dust suppressant. The dust suppressant prepared from the water-soluble melamine high-molecular polymer has excellent cohesiveness and quick film-forming property, can solidify fine particles on the surface layer, increases the surface strength, quickly forms a film on the surface of a road, covers the surface of the road, does not damage the road surface and the environment, can reduce or avoid the corrosion of the dust suppressant on vehicles, prolongs the storage time, and keeps the road free of dust for more than twelve days.
Description
Technical Field
The invention relates to the technical field of environmental protection, and particularly relates to a preparation method of a dust suppressant and application of a water-soluble melamine high-molecular polymer in preparation of the dust suppressant.
Background
Due to the rapid development of social, economic, urbanization and エ industrialization processes, increasingly serious environmental problems are brought about inevitably. Among them, inhalable particles in the air, such as dust, are an important cause of environmental problems. Related studies have shown that an increase in human mortality is associated with airborne respirable particles, which cause health problems such as cancer, deformity, and mutation. Therefore, the emission of particulate matters such as dust in the air is strictly controlled and treated, and the air conditioning, the appearance of haze weather reduction and human health protection are significant, so that the problem to be solved is urgently solved.
The traditional dust suppression mode is mainly water sprinkling and dust suppression, but the water sprinkling and dust suppression not only wastes a large amount of water resources, but also has quick evaporation in summer (only keeping about 10min after one-time sprinkling) and is easy to freeze in winter, so the long-term large-area popularization and application are difficult; the chemical dust suppressant is produced in response to the supplement of the defects of sprinkling and dust suppression, overcomes the defects of the traditional sprinkling and dust suppression (low freezing point and difficult evaporation), and has excellent performances of wetting, bonding, coagulation, moisture absorption, water retention and the like, so that the chemical dust suppressant is widely popularized and applied.
Although the existing chemical dust suppressant has a good dust suppression effect, most of the chemical dust suppressant has a corrosion problem on road vehicles, so researchers improve the existing dust suppressant, and by adding a preservative (mostly inorganic salts), the corrosion effect of the road dust suppressant on the vehicles can be reduced or avoided, and the storage time can be prolonged. For example, chinese patent document CN102660227A discloses a road dust suppressant comprising a water-soluble high molecular polymer; a moisture absorbing humectant; preservatives and penetrants; wherein, the preservative is borax and sodium nitrite. Although the dust suppressant disclosed by the document can reduce or avoid the corrosion effect of the road dust suppressant on vehicles, the storage time is prolonged, and the road can be kept free of dust for more than twelve days; however, inorganic salts contained in the dust suppressant generate a salt swelling phenomenon, so that the roadbed of the road is damaged; moreover, if salt is brought into the soil of the roadside green belt, the roadside green plants die; causing great harm to the environment and the road surface.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the defect that inorganic salts added in the dust suppressant in the prior art cause damage to the road surface and the environment, so that a preparation method of the dust suppressant and the application of the water-soluble melamine high-molecular polymer in preparing the dust suppressant are provided.
Therefore, the invention provides the following technical scheme:
the application of water-soluble melamine high molecular polymer in preparing dust suppressant.
The surfactant adopted in the dust suppressant is a fluorine-containing organosilicon surfactant.
The invention also provides a preparation method of the dust suppressant, which comprises the following steps,
preparing water solution of water-soluble melamine high molecular polymer;
mixing the humectant, the surfactant, the binder and water to obtain a mixed aqueous solution;
and mixing the aqueous solution of the melamine high-molecular polymer with the mixed aqueous solution to obtain the dust suppressant.
The water-soluble melamine high-molecular polymer is at least one of melamine formaldehyde resin, benzoguanamine formaldehyde resin and hexamethoxymethylmelamine resin.
The surfactant is a fluorine-containing organic silicon surfactant; preferably, the fluorine-containing silicone surfactant is at least one of perfluorohexylethylmethyldimethoxysilane, (3,3, 3-trifluoropropyl) dichloromethylsilane, and trifluoropropylmethylcyclotrisiloxane.
The humectant is polyhydric alcohol, and the binder is natural polysaccharide.
The polyhydric alcohol is at least one of glycerol, butanediol, propylene glycol, hexanediol, xylitol and sorbitol.
The natural polysaccharide is alginic acid or starch.
The preparation process of the water solution of the water-soluble melamine high molecular polymer comprises the steps of adding 0.1-10 parts of the water-soluble melamine high molecular polymer into water for swelling, and stirring and dissolving at room temperature; preferably, the stirring rate is 500-.
The preparation process of the mixed aqueous solution comprises the steps of stirring and dissolving 0.1-10 parts of humectant, 0.1-5 parts of surfactant and 0.5-5 parts of binder in water, uniformly stirring and filtering; preferably, the stirring rate is 200-.
The technical scheme of the invention has the following advantages:
1. the water-soluble melamine high molecular polymer adopted by the invention has good spreadability and complexation in water, and functional groups in the melamine high molecular polymer can be tightly combined with other components through interaction such as hydrogen bonds and the like to form a stable composite structure. The dust suppressant prepared from the water-soluble melamine high-molecular polymer has excellent cohesiveness and quick film-forming property, can solidify fine particles on the surface layer, increases the surface strength, quickly forms a film on the surface of a road, covers the surface of the road, does not damage the road surface and the environment, can reduce or avoid the corrosion of the dust suppressant on vehicles, prolongs the storage time, and keeps the road free of dust for more than twelve days.
2. The invention provides the application of the water-soluble melamine high molecular polymer in the preparation of the dust suppressant, wherein the surfactant adopted in the dust suppressant is a fluorine-containing organosilicon surfactant, and the surfactant has ultralow surface tension and is beneficial to the infiltration of dust; and the fluorine-containing organic silicon and the melamine have similar polarity, so that the fluorine-containing organic silicon and the melamine have good compatibility and binding capacity, and the corrosion of the dust suppressant on the vehicle can be further reduced or avoided through the synergistic effect of the water-soluble melamine high-molecular polymer and the fluorine-containing organic silicon surfactant, and the dust suppression effect is improved.
3. The preparation method of the dust suppressant provided by the invention has the advantages that the water solution of the water-soluble melamine high-molecular polymer is uniformly mixed with the mixed water solution of the rest raw materials, so that the melamine high-molecular polymer can uniformly load other components and is tightly combined with the other components through the interaction of hydrogen bonds and the like to form a stable composite structure, the obtained dust suppressant has excellent cohesiveness and quick film forming property, can solidify fine particles on the surface layer, increases the surface strength, quickly forms a film on the surface of a road, covers the surface of the road, cannot damage the road surface and the environment, can reduce or avoid the corrosion effect on vehicles, has low surface tension and high dust suppression efficiency, and can keep the road free of dust for more than twelve days.
Detailed Description
The following examples are provided to further understand the present invention, not to limit the scope of the present invention, but to provide the best mode, not to limit the content and the protection scope of the present invention, and any product similar or similar to the present invention, which is obtained by combining the present invention with other prior art features, falls within the protection scope of the present invention.
The examples do not show the specific experimental steps or conditions, and can be performed according to the conventional experimental steps described in the literature in the field. The reagents or instruments used are not indicated by manufacturers, and are all conventional reagent products which can be obtained commercially.
Example 1
The embodiment provides a dust suppressant and a preparation method thereof, wherein the dust suppressant comprises the following raw materials by weight:
0.1kg of melamine formaldehyde resin; 0.1kg of glycerol; 0.1kg of perfluorohexylethylmethyldimethoxysilane; 0.5kg alginic acid and 99.7kg water.
The preparation method of the dust suppressant comprises the following steps:
weighing 0.1kg of melamine formaldehyde resin, adding 49.9kg of water for swelling, and stirring at the stirring speed of 500rpm for 30min at room temperature to obtain a melamine formaldehyde resin aqueous solution;
putting 0.1kg of glycerol, 0.1kg of perfluorohexylethylmethyldimethoxysilane and 0.5kg of alginic acid into 48.8kg of water, stirring for 45min at the stirring speed of 1200rpm at room temperature, and filtering to obtain a mixed aqueous solution of the rest raw materials after uniform stirring;
and (3) uniformly mixing the two solutions at a stirring speed of 1000rpm to obtain the dust suppressant.
Example 2
The embodiment provides a dust suppressant and a preparation method thereof, wherein the dust suppressant comprises the following raw materials by weight:
10kg of hexamethoxymethylmelamine resin, 1kg of butanediol, 1kg of (3,3, 3-trifluoropropyl) dichloromethylsilane, 1kg of starch and 87kg of water.
The preparation method of the dust suppressant comprises the following steps:
weighing 10kg of hexamethoxy methyl melamine resin, adding the hexamethoxy methyl melamine resin into 80kg of water for swelling, and stirring at the stirring speed of 1500rpm for 20min at room temperature to obtain an aqueous solution of the hexamethoxy methyl melamine resin;
putting 1kg of butanediol, 1kg of (3,3, 3-trifluoropropyl) dichloromethylsilane and 1kg of starch in 7kg of water, stirring at the stirring speed of 1000rpm at room temperature for 35min, uniformly stirring, and filtering to obtain a mixed aqueous solution of the rest raw materials;
and (3) uniformly mixing the two solutions at a stirring speed of 1000rpm to obtain the dust suppressant.
Example 3
The embodiment provides a dust suppressant and a preparation method thereof, wherein the dust suppressant comprises the following raw materials by weight:
5kg of a benzoguanamine formaldehyde resin, 10kg of propylene glycol, 2kg of trifluoropropylmethylcyclotrisiloxane, 3kg of starch and 80kg of water.
The preparation method of the dust suppressant comprises the following steps:
weighing 5kg of benzoguanamine formaldehyde resin, adding the benzoguanamine formaldehyde resin into 45kg of water for swelling, and stirring at the stirring speed of 1000rpm for 45min at room temperature to obtain a benzoguanamine formaldehyde resin aqueous solution;
putting 10kg of propylene glycol, 2kg of trifluoropropylmethylcyclotrisiloxane and 3kg of starch into 35kg of water, stirring for 40min at the stirring speed of 800rpm at room temperature, uniformly stirring, and filtering to obtain a mixed aqueous solution of the rest raw materials;
and (3) uniformly mixing the two solutions at a stirring speed of 1000rpm to obtain the dust suppressant.
Example 4
The embodiment provides a dust suppressant and a preparation method thereof, wherein the dust suppressant comprises the following raw materials by weight:
1.5kg of benzoguanamine formaldehyde resin, 1.5kg of hexamethoxymethylmelamine resin, 5kg of hexanediol, 2kg of butanediol, 1kg of perfluorohexylethylmethyldimethoxysilane, 1kg of (3,3, 3-trifluoropropyl) dichloromethylsilane, 5kg of starch and 83kg of water.
The preparation method of the dust suppressant comprises the following steps:
weighing 1.5kg of benzoguanamine formaldehyde resin and 1.5kg of hexamethoxymethylmelamine resin, adding into 27kg of water for swelling, and stirring at the stirring speed of 1200rpm for 40min at room temperature to obtain a mixed aqueous solution of the benzoguanamine formaldehyde resin and the hexamethoxymethylmelamine resin;
placing 5kg of hexanediol, 2kg of butanediol, 1kg of perfluorohexylethylmethyldimethoxysilane, 1kg of (3,3, 3-trifluoropropyl) dichloromethylsilane and 5kg of starch in 56kg of water, stirring at 200rpm at room temperature for 45min, stirring uniformly, and filtering to obtain a mixed aqueous solution of the rest raw materials;
and (3) uniformly mixing the two solutions at a stirring speed of 1000rpm to obtain the dust suppressant.
Example 5
The embodiment provides a dust suppressant and a preparation method thereof, wherein the dust suppressant comprises the following raw materials by weight:
7kg of benzoguanamine formaldehyde resin, 1kg of melamine formaldehyde resin, 2kg of xylitol, 1kg of propylene glycol, 1kg of perfluorohexylethylmethyldimethoxysilane, 1kg of (3,3, 3-trifluoropropyl) dichloromethylsilane, 1kg of trifluoropropylmethylcyclotrisiloxane, 4kg of starch and 86kg of water.
The preparation method of the dust suppressant comprises the following steps:
weighing 7kg of benzoguanamine formaldehyde resin and 1kg of melamine formaldehyde resin, adding the benzoguanamine formaldehyde resin and the melamine formaldehyde resin into 60kg of water for swelling, and stirring for 50min at the stirring speed of 800rpm at room temperature to obtain a mixed aqueous solution of the benzoguanamine formaldehyde resin and the melamine formaldehyde resin;
placing 2kg of xylitol, 1kg of propylene glycol, 1kg of perfluorohexylethylmethyldimethoxysilane, 1kg of (3,3, 3-trifluoropropyl) dichloromethylsilane, 1kg of trifluoropropylmethylcyclotrisiloxane and 4kg of starch in 26kg of water, stirring at the stirring speed of 600rpm at room temperature for 25min, and filtering after uniform stirring to obtain a mixed aqueous solution of the rest raw materials;
and (3) uniformly mixing the two solutions at a stirring speed of 1000rpm to obtain the dust suppressant.
Example 6
The embodiment provides a dust suppressant and a preparation method thereof, wherein the dust suppressant comprises the following raw materials by weight:
1kg of a benzoguanamine formaldehyde resin, 0.1kg of a melamine formaldehyde resin, 0.9kg of a hexamethoxymethylmelamine resin, 1kg of sorbitol, 0.5kg of glycerol, 0.5kg of butanediol, 1kg of (3,3, 3-trifluoropropyl) dichloromethylsilane, 1kg of trifluoropropylmethylcyclotrisiloxane, 5kg of alginic acid and 89kg of water.
The preparation method of the dust suppressant comprises the following steps:
weighing 1kg of benzoguanamine formaldehyde resin, 0.1kg of melamine formaldehyde resin and 0.9kg of hexamethoxy methyl melamine resin, adding into 48kg of water for swelling, and stirring at the stirring speed of 1400rpm for 35min at room temperature to obtain a mixed aqueous solution of the three water-soluble high molecular polymers;
putting 1kg of sorbitol, 0.5kg of glycerol, 0.5kg of butanediol, 1kg of (3,3, 3-trifluoropropyl) dichloromethylsilane, 1kg of trifluoropropylmethylcyclotrisiloxane and 5kg of alginic acid in 41kg of water, stirring at 1200rpm at room temperature for 35min, stirring uniformly, and filtering to obtain a mixed aqueous solution of the rest of the raw materials;
and (3) uniformly mixing the two solutions at a stirring speed of 1000rpm to obtain the dust suppressant.
Comparative example 1
The comparative example provides a dust suppressant and a preparation method thereof, wherein the dust suppressant comprises the following raw materials by weight:
0.1kg of sodium carboxymethylcellulose, 0.1kg of glycerol, 0.1kg of sodium dodecyl sulfate, 0.5kg of alginic acid and 99.7kg of water.
The preparation method of the dust suppressant comprises the following steps:
adding 0.1kg of sodium carboxymethylcellulose into 49.9kg of water to swell for about 2 hours, and stirring and dissolving for 20 minutes at 50 ℃ to obtain sodium carboxymethylcellulose aqueous solution;
dissolving 0.1kg of glycerol, 0.1kg of sodium dodecyl sulfate and 0.5kg of alginic acid in 48.8kg of water under stirring, adding 15kg of glycerol, 2.5kg of sodium nitrite and 1kg of sodium dodecyl sulfate, stirring at the stirring speed of 1200rpm for 45min at room temperature, uniformly stirring, and filtering to obtain a mixed aqueous solution of the rest raw materials;
and (3) uniformly mixing the two solutions at a stirring speed of 1000rpm to obtain the dust suppressant.
Comparative example 2
The comparative example provides a dust suppressant and a preparation method thereof, wherein the dust suppressant comprises the following raw materials by weight:
0.1kg of melamine formaldehyde resin; 0.1kg of glycerol; 0.1kg of sodium dodecylbenzenesulfonate; 0.5kg alginic acid and 99.7kg water.
The preparation method of the dust suppressant comprises the following steps:
weighing 0.1kg of melamine formaldehyde resin, adding 49.9kg of water for swelling, and stirring at the stirring speed of 500rpm for 30min at room temperature to obtain a melamine formaldehyde resin aqueous solution;
putting 0.1kg of glycerol, 0.1kg of sodium dodecyl benzene sulfonate and 0.5kg of alginic acid into 48.8kg of water, stirring for 45min at the stirring speed of 1200rpm at room temperature, and filtering to obtain a mixed aqueous solution of the rest raw materials after uniform stirring;
and (3) uniformly mixing the two solutions at a stirring speed of 1000rpm to obtain the dust suppressant.
Examples of the experiments
The dust suppressant prepared in each example and each comparative example is diluted with water according to the mass ratio of 1:20, and then is uniformly mixed with water, and then the performance tests of the road surface friction attenuation rate, the carbon steel corrosion rate, the skin irritation, the relative plant seed damage rate and the effect of keeping the road surface free of dust emission are carried out.
Wherein the road surface friction attenuation rate is operated according to a test method for measuring the road surface skid resistance value by a T0964-2008 pendulum instrument in JTGE 60-2008 < road subgrade and road surface on-site test regulations >; the carbon steel corrosion rate is measured according to GB/T1815-2000 snow-melting agent and a method for measuring the corrosion inhibition performance of a water treatment agent; the skin irritation is measured according to GB/T21604-2008 'test method for acute skin irritation/corrosivity of chemicals'; the relative damage rate of plant seeds is tested according to DB 11/T161 and 2012 animal and plant harmlessness; the test for keeping the effect of preventing dust on the road surface is to spray the dust on the road surface by a spraying vehicle with the spraying amount of 800g/m2Detecting the retention time of the road surface without raising dust; dust suppression efficiency test method refers to detection of dust suppression efficiency in appendix A of T/CAEPI 7-2017 Water-soluble road dust suppressantA method; wherein the test temperature is 25 ℃; the relative humidity is 45%; the surface tension was tested by the plate method in GB/T22237-2008 "determination of surface tension of surfactant".
The specific test results are shown in table 1 below.
TABLE 1 relevant Performance test results of dust suppressants prepared in examples and comparative examples
The data in the table show that the dust suppressant provided by the invention has low carbon steel corrosion rate and no corrosion effect on vehicles, can achieve the technical effect equivalent to that of adding the preservative even if the inorganic salt preservative is not added, does not influence the road traffic condition, has no irritation to skin, has no harm to animals and plants, is safe and environment-friendly, and can keep the road free of dust for more than twelve days.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of the invention may be made without departing from the spirit or scope of the invention.
Claims (9)
1. The application of the water-soluble melamine high molecular polymer in preparing the dust suppressant is characterized in that the surfactant adopted in the dust suppressant is a fluorine-containing organosilicon surfactant;
the fluorine-containing organosilicon surfactant is at least one of perfluorohexylethylmethyldimethoxysilane, (3,3, 3-trifluoropropyl) dichloromethylsilane and trifluoropropylmethylcyclotrisiloxane;
the water-soluble melamine high molecular polymer is at least one of melamine formaldehyde resin, benzoguanamine formaldehyde resin and hexamethoxymethylmelamine resin.
2. A preparation method of a dust suppressant comprises the following steps,
preparing water solution of water-soluble melamine high molecular polymer;
mixing the humectant, the surfactant, the binder and water to obtain a mixed aqueous solution;
mixing the aqueous solution of the melamine high-molecular polymer with the mixed aqueous solution to obtain the dust suppressant;
the water-soluble melamine high molecular polymer is at least one of melamine formaldehyde resin, benzoguanamine formaldehyde resin and hexamethoxymethylmelamine resin;
the surfactant is a fluorine-containing organic silicon surfactant; the fluorine-containing organosilicon surfactant is at least one of perfluorohexylethylmethyldimethoxysilane, (3,3, 3-trifluoropropyl) dichloromethylsilane and trifluoropropylmethylcyclotrisiloxane.
3. A method of producing a dust suppressing agent as defined in claim 2 wherein the humectant is a polyhydric alcohol and the binder is a natural polysaccharide.
4. A method of producing a dust suppressing agent as defined in claim 3 wherein the polyhydric alcohol is at least one of glycerin, butylene glycol, propylene glycol, hexylene glycol, xylitol and sorbitol.
5. A method for preparing a dust suppressant according to claim 3 or 4, wherein said natural polysaccharide is alginic acid or starch.
6. A process for preparing a dust suppressing agent as claimed in claim 3 or 4 wherein said aqueous solution of water soluble melamine based polymer is prepared by adding 0.1-10 parts water soluble melamine based polymer to water to swell and stirring at room temperature to dissolve.
7. The method as claimed in claim 6, wherein the stirring speed is 500-1500rpm and the time is 20-50 min.
8. A preparation method of a dust suppressant according to claim 3 or 4, characterized in that the mixed aqueous solution is prepared by dissolving 0.1-10 parts of humectant, 0.1-5 parts of surfactant and 0.5-5 parts of binder in water under stirring, stirring uniformly and filtering.
9. The method as claimed in claim 8, wherein the stirring speed is 200-1200rpm and the time is 25-45 min.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1935869A (en) * | 2006-10-08 | 2007-03-28 | 施华强 | Method for preparing modified sulfonated melamine urea resin and its use |
| CN102660227A (en) * | 2012-05-02 | 2012-09-12 | 山西兆益矿用材料有限公司 | Road dust suppressant |
| CN109609091A (en) * | 2018-12-07 | 2019-04-12 | 南瑞集团有限公司 | A kind of environmental protection moist type dust suppressant and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BRPI0602881A (en) * | 2006-07-21 | 2008-03-11 | 3M Innovative Properties Co | dust suppressing composition |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1935869A (en) * | 2006-10-08 | 2007-03-28 | 施华强 | Method for preparing modified sulfonated melamine urea resin and its use |
| CN102660227A (en) * | 2012-05-02 | 2012-09-12 | 山西兆益矿用材料有限公司 | Road dust suppressant |
| CN109609091A (en) * | 2018-12-07 | 2019-04-12 | 南瑞集团有限公司 | A kind of environmental protection moist type dust suppressant and preparation method thereof |
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