CN113088257A - Preparation method of snow-melting agent and prepared snow-melting agent - Google Patents
Preparation method of snow-melting agent and prepared snow-melting agent Download PDFInfo
- Publication number
- CN113088257A CN113088257A CN202110376900.6A CN202110376900A CN113088257A CN 113088257 A CN113088257 A CN 113088257A CN 202110376900 A CN202110376900 A CN 202110376900A CN 113088257 A CN113088257 A CN 113088257A
- Authority
- CN
- China
- Prior art keywords
- snow
- parts
- melting agent
- water
- sodium
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000002844 melting Methods 0.000 title claims abstract description 108
- 238000002360 preparation method Methods 0.000 title claims abstract description 22
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 86
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims abstract description 45
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 45
- 239000000203 mixture Substances 0.000 claims abstract description 30
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 29
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims abstract description 28
- SCVFZCLFOSHCOH-UHFFFAOYSA-M potassium acetate Chemical compound [K+].CC([O-])=O SCVFZCLFOSHCOH-UHFFFAOYSA-M 0.000 claims abstract description 28
- LWIHDJKSTIGBAC-UHFFFAOYSA-K tripotassium phosphate Chemical compound [K+].[K+].[K+].[O-]P([O-])([O-])=O LWIHDJKSTIGBAC-UHFFFAOYSA-K 0.000 claims abstract description 28
- 238000003756 stirring Methods 0.000 claims abstract description 23
- 229920001577 copolymer Polymers 0.000 claims abstract description 19
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000000292 calcium oxide Substances 0.000 claims abstract description 15
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000004280 Sodium formate Substances 0.000 claims abstract description 14
- 238000002156 mixing Methods 0.000 claims abstract description 14
- 235000011056 potassium acetate Nutrition 0.000 claims abstract description 14
- 229910000160 potassium phosphate Inorganic materials 0.000 claims abstract description 14
- 235000011009 potassium phosphates Nutrition 0.000 claims abstract description 14
- HLBBKKJFGFRGMU-UHFFFAOYSA-M sodium formate Chemical compound [Na+].[O-]C=O HLBBKKJFGFRGMU-UHFFFAOYSA-M 0.000 claims abstract description 14
- 235000019254 sodium formate Nutrition 0.000 claims abstract description 14
- 239000003999 initiator Substances 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 claims abstract description 8
- JHUFGBSGINLPOW-UHFFFAOYSA-N 3-chloro-4-(trifluoromethoxy)benzoyl cyanide Chemical compound FC(F)(F)OC1=CC=C(C(=O)C#N)C=C1Cl JHUFGBSGINLPOW-UHFFFAOYSA-N 0.000 claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims abstract description 6
- 235000012255 calcium oxide Nutrition 0.000 claims abstract description 3
- 235000013772 propylene glycol Nutrition 0.000 claims abstract description 3
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 6
- 239000012798 spherical particle Substances 0.000 claims description 6
- 239000000178 monomer Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims 9
- 238000000465 moulding Methods 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000008018 melting Effects 0.000 description 33
- 230000000694 effects Effects 0.000 description 17
- 238000007710 freezing Methods 0.000 description 14
- 230000008014 freezing Effects 0.000 description 14
- -1 formate compound Chemical class 0.000 description 13
- 239000000243 solution Substances 0.000 description 11
- 150000001804 chlorine Chemical class 0.000 description 10
- 229910052751 metal Inorganic materials 0.000 description 10
- 239000002184 metal Substances 0.000 description 10
- 239000007864 aqueous solution Substances 0.000 description 8
- 239000002689 soil Substances 0.000 description 8
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 7
- 229910019142 PO4 Inorganic materials 0.000 description 7
- 239000000460 chlorine Substances 0.000 description 7
- 229910052801 chlorine Inorganic materials 0.000 description 7
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 7
- 239000010452 phosphate Substances 0.000 description 7
- 231100000614 poison Toxicity 0.000 description 7
- 239000003440 toxic substance Substances 0.000 description 7
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 6
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000035558 fertility Effects 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 3
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 3
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 description 3
- BDAGIHXWWSANSR-UHFFFAOYSA-M Formate Chemical compound [O-]C=O BDAGIHXWWSANSR-UHFFFAOYSA-M 0.000 description 3
- 230000001464 adherent effect Effects 0.000 description 3
- 229910021529 ammonia Inorganic materials 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000001110 calcium chloride Substances 0.000 description 3
- 229910001628 calcium chloride Inorganic materials 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 229910001431 copper ion Inorganic materials 0.000 description 3
- 235000015097 nutrients Nutrition 0.000 description 3
- 238000006116 polymerization reaction Methods 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 3
- 230000002194 synthesizing effect Effects 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 150000003841 chloride salts Chemical class 0.000 description 2
- 238000005536 corrosion prevention Methods 0.000 description 2
- 239000005457 ice water Substances 0.000 description 2
- 230000005764 inhibitory process Effects 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000002455 scale inhibitor Substances 0.000 description 2
- 239000005413 snowmelt Substances 0.000 description 2
- 239000007790 solid phase Substances 0.000 description 2
- 238000011895 specific detection Methods 0.000 description 2
- PQUXFUBNSYCQAL-UHFFFAOYSA-N 1-(2,3-difluorophenyl)ethanone Chemical compound CC(=O)C1=CC=CC(F)=C1F PQUXFUBNSYCQAL-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 150000004677 hydrates Chemical class 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 229910001629 magnesium chloride Inorganic materials 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229940047670 sodium acrylate Drugs 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229920001909 styrene-acrylic polymer Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/18—Materials not provided for elsewhere for application to surfaces to minimize adherence of ice, mist or water thereto; Thawing or antifreeze materials for application to surfaces
- C09K3/185—Thawing materials
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Materials Applied To Surfaces To Minimize Adherence Of Mist Or Water (AREA)
Abstract
The invention discloses a preparation method of a snow-melting agent, relating to the technical field of snow-melting agents and comprising the following steps: (1) preparation of acrylic acid and sodium propylene sulfonate copolymer: mixing water, acrylic acid and sodium allylsulfonate in proportion, stirring for dissolving, heating to 70 ℃, adding an initiator, and reacting at constant temperature for 4 hours to obtain colorless or light yellow transparent viscous liquid; (2) mixing and stirring sodium formate, potassium acetate, potassium phosphate, calcium oxide, propylene glycol and water to obtain a primary mixture; (3) adding the acrylic acid and sodium propylene sulfonate copolymer obtained in the step (1) into the primary mixture, and stirring; (4) and (4) granulating and forming the mixture in the step (3) to obtain the snow-melting agent. The invention has the beneficial effects that: the preparation method is simple and strong in operability, and the snow-melting agent can be prepared by stirring and mixing the components, adjusting the viscosity and then curing and molding through a granulator.
Description
Technical Field
The invention relates to the technical field of snow-melting agents, in particular to a preparation method of a snow-melting agent and the prepared snow-melting agent.
Background
The snow removing method is characterized in that the snow is severely poisoned by snow in winter in northern China, and the snow removing method at present is as follows: the snow removal is performed mechanically and by a snow melting agent. The snow-melting agent can be divided into three types, namely chlorine salt type snow-melting agent, non-chlorine salt type snow-melting agent and environment-friendly composite snow-melting agent. The early stage snow removing is usually carried out by using a chlorine salt snow-melting agent, and the snow removing agent has low cost, good effect and high speed. For example, patent application with publication number CN109321205A discloses an environment-friendly snow-melting agent and a preparation method thereof, which is a chlorine salt composite snow-melting agent mainly containing chlorine salt. The continuous time of the common chloride salt snow-melting agent such as sodium chloride, calcium chloride, magnesium chloride and the like for snow melting and ice melting can be prolonged, so that the snow-melting agent can keep a good snow-melting effect for a long time at a low temperature, secondary icing is not generated, the dissolved solution can play a role in corrosion inhibition, and the corrosivity of chloride to cement roads and steel structures is greatly reduced.
However, the chlorine salt snow-melting agent is a double-edged sword, and when the chlorine salt snow-melting agent is used for melting ice and snow, the great harm is brought to roads, buildings and surrounding environment. The harm is mainly reflected in that the components of the chlorine salt snow melting agent contain strong corrosivity, and can cause certain threats to roads, reinforced cement, soil vegetation and the like while melting ice and snow.
The non-chlorine salt snow-melting agent is mainly a substance containing no chlorine, such as acetate, urea, and glycol. The ice point is high, the price is high, the snow melting effect is poor, and the harm to the environment is small. But the dosage and cost are more than several times of those of the chlorine salts under the same effect, so the application place is limited.
The current environment-friendly snow-melting agent comprises two categories of environment-friendly composite snow-melting agents and environment-friendly organic snow-melting agents represented by CMA. For example, a patent with publication number CN108395878A discloses a special high-efficiency green snow-melting agent for airports, which is a formate compound snow-melting agent, and the agent is green and environment-friendly, has good snow-melting effect and low freezing point (-35 ℃). But for the cold degree of airport in north, the freezing point of 35 ℃ below zero is slightly insufficient, and the main components are purified by recrystallization, thus increasing the operation difficulty, and meanwhile, the cost is increased due to excessive formula components. The patent application with publication number CN109054749A discloses a preparation method of an environment-friendly snow-melting agent, which aims at the problem that the existing snow-melting agent is easy to cause harm to roadside vegetation. The snow melting agent has low freezing point and high snow melting efficiency, hardly corrodes metal, concrete and asphalt pavements, and has little harm to plants. But the sources and the cost of the experimental raw materials are overlarge, wherein the calcining temperature of the dolomite is overhigh, the operation is improper, the danger is easy to occur, the cooling speed is slow, the powder can fly upwards during collection, and the harm is caused to the human body.
Disclosure of Invention
The technical problems to be solved by the invention are that the chloride salt snow-melting agent in the prior art is not environment-friendly, and the preparation method of the snow-melting agent in the prior art is complex and has higher cost.
The invention solves the technical problems through the following technical means:
a preparation method of a snow melt agent comprises the following steps:
(1) preparation of acrylic acid and sodium propylene sulfonate copolymer: mixing water, acrylic acid and sodium allylsulfonate, stirring for dissolving, heating to 60-70 ℃, adding an initiator, and reacting at constant temperature for 3-4 h to obtain colorless or light yellow transparent viscous liquid;
(2) mixing and stirring sodium formate, potassium acetate, potassium phosphate, calcium oxide, propylene glycol and water to obtain a primary mixture;
(3) adding the acrylic acid and sodium propylene sulfonate copolymer obtained in the step (1) into the primary mixture obtained in the step (2), and stirring;
(4) and (4) granulating and forming the mixture in the step (3) to obtain the snow-melting agent.
Has the advantages that: the preparation method is simple and has strong operability, and the snow-melting agent can be prepared by stirring and mixing the components, adjusting the viscosity and then curing and molding through a granulator.
The invention adopts a copolymerization system based on acrylic acid and sodium propylene sulfonate, and is prepared by formate, acetate, phosphate, propylene glycol and calcium oxide.
Acrylic acid with the structural formula of CH2Which is a very important water-soluble monomer. First, as can be seen from the acrylic structural formula, it has highly reactive double bonds, so that it can undergo polymerization reactions and can copolymerize with many monomers to produce a wide variety of copolymers. On the other hand, the molecular structure of the scale inhibitor contains a carboxyl group, so the scale inhibitor has good scale inhibition performance. The reaction temperature required for carrying out the polymerization is also relatively low, owing to the ease of initiation and control. The structural formula of the sodium propylene sulfonate is CH2＝CH-CH2-SO3Na, which is very soluble in water, acts as a dispersant, increasing water solubility. Also used for soil improvement, and polymerization of sodium acrylate, styrene-acrylic emulsion, polyvinyl alcohol and the like to increase the fertilizer retention of the red-red soil, and has strong adsorbability to ammonium ions and nitrate ions.
Copolymers of acrylic acid with sodium allylsulfonate, owing to the high molecular weight of the copolymers and the accompanying groups carboxylic acid-COOH and sulfonic acid-HSO3It can be used as corrosion inhibitor and thickener, and also can be used as water quality stabilizer to remove toxic substances such as chlorine, ammonia, copper ions and the like. Wherein the thickening facilitates the granulation at a later stage. Therefore, the water solubility of the snow-melting agent is improved, the viscosity of the snow-melting agent is increased, and the snow-melting agent flows into soil along with water after snow melting, so that the snow-melting agent can protect and increase the fertility of the soil; when water flows into the water source, the water quality can be stabilized, and some harmful substances can be removed, so that the environment is very friendly. The snow melting agent is completely different from other environment-friendly snow melting agents, is more beneficial to the surrounding environment, is non-toxic and harmless, has good protection, and further embodies the solution of the problems to be solved by the snow melting agent.
If other inorganic and organic substances are used, the environment-friendly effect cannot be achieved, so that the addition of the copolymer of acrylic acid and sodium propylene sulfonate is indispensable, and the environment-friendly problem aimed by the invention is met.
The snow-melting agent does not contain chlorine element, and does not corrode roads and tires. Has protective effect on metal in some building facilities, and is contained in the snow-melting agentThe phosphate salts of (A) have an anti-corrosive effect in that they are hydrates themselves, have the ability to form basic complexes with metal surfaces and Fe2+The anodic reaction is suppressed by the formation of a strongly adherent complex precipitate layer, so that the corrosion of the metal surface is negligible. The solution formed by the snow melting agent has good protection and fertility for soil, can provide required nutrient elements for plants, has no harm to surrounding water bodies, and can remove some toxic substances in water, wherein the toxic substances are formed by the groups-COOH and-SO of the copolymer3H plays a role.
The addition of the formate lowers the freezing point of the snow-melting agent, and the formate has low corrosivity, simple preparation process and low price; the addition of acetate increases the snow melting efficiency, and its solubility is high and corrosiveness is low. The mutual matching of the two greatly improves the effect of the snow-melting agent.
Preferably, the mass ratio of the water to the acrylic acid to the sodium propylene sulfonate in the step (1) is 2:2: 1.
Preferably, the initiator in the step (1) is potassium persulfate.
Preferably, the potassium persulfate is added in an amount of 2-5% of the total amount of acrylic acid and sodium allylsulfonate.
Preferably, the potassium persulfate is added in an amount of 3% of the total amount of monomers.
Preferably, 30-40 parts of sodium formate, 10-20 parts of potassium acetate, 7-10 parts of potassium phosphate, 5-10 parts of calcium oxide, 10-15 parts of propylene glycol and 8-10 parts of water are mixed and stirred to obtain a primary mixture, and then 10 parts of acrylic acid and sodium propylene sulfonate copolymer are added.
Has the advantages that: the snow melting agent prepared by the invention has low freezing point, can be used at the temperature of minus 40-50 ℃, can ensure that the aqueous solution is not frozen at the low temperature, and can not generate the side effect of freezing the snow melting water, so the snow melting agent can be used in the more severe cold regions in the north.
The snow melting effect is good, and the snow melting speed is high. The snow-melting agent is highly soluble, and when dissolved in water, the concentration of ions in water increases to lower the vapor pressure of the liquid phase of water, but the vapor pressure of the solid phase of ice does not change. In order to achieve the state that the solid-liquid vapor pressure of the ice-water mixture is equal, the ice is dissolved.
Preferably, in the step (2), 30 parts of sodium formate, 20 parts of potassium acetate, 9 parts of potassium phosphate, 9 parts of calcium oxide, 12 parts of propylene glycol and 10 parts of water are mixed and stirred to obtain a primary mixture.
Preferably, in the step (2), 35 parts of sodium formate, 15 parts of potassium acetate, 10 parts of potassium phosphate, 8 parts of calcium oxide, 13 parts of propylene glycol and 8 parts of water are mixed and stirred to obtain a primary mixture.
Preferably, in the step (2), 40 parts of sodium formate, 10 parts of potassium acetate, 8 parts of potassium phosphate, 10 parts of calcium oxide, 13 parts of propylene glycol and 9 parts of water are mixed and stirred to obtain a primary mixture.
Preferably, the mixture in step (3) is granulated by a granulator to form spherical particles.
Preferably, the spherical particles have a diameter of 3 to 5 mm.
The invention also provides the snow-melting agent prepared by the preparation method.
Has the advantages that: the snow-melting agent prepared by the invention does not contain chlorine element, and does not corrode roads and tires. The phosphate in the snow-melting agent has the protection effect on metals in some building facilities, and the corrosion prevention effect of the phosphate in the snow-melting agent is characterized in that the phosphate is a hydrate and has the capability of forming a basic complex, and the basic complex can be mixed with metal surfaces and Fe2+The anodic reaction is suppressed by the formation of a strongly adherent complex precipitate layer, so that the corrosion of the metal surface is negligible. The solution formed by the snow melting agent has good protection and fertility increasing performance on soil, can provide required nutrient elements for plants, has no harm to surrounding water bodies, and can remove toxic substances such as chlorine, ammonia, copper ions and the like in water, wherein the toxic substances are formed by the groups-COOH and-SO of the copolymer3H plays a role.
The invention has the advantages that: the preparation method is simple and high in operability, and the components are stirred and mixed, and are cured and formed by a granulator after the viscosity is regulated by the acrylic acid and sodium propylene sulfonate copolymer, so that the cost is low.
Compared with the prior art, the snow-melting agent prepared by the invention has a lower freezing point, can be used at the temperature of minus 40 ℃ to 50 ℃, can ensure that the aqueous solution is not frozen at the low temperature, and does not generate the side effect of freezing snow melt water, so the snow-melting agent can be used in the severe cold regions in the north.
The snow-melting agent prepared by the invention does not contain chlorine element, and does not corrode roads and tires. The phosphate in the snow-melting agent has the protection effect on metals in some building facilities, and the corrosion prevention effect of the phosphate in the snow-melting agent is characterized in that the phosphate is a hydrate and has the capability of forming a basic complex, and the basic complex can be mixed with metal surfaces and Fe2+The anodic reaction is suppressed by the formation of a strongly adherent complex precipitate layer, so that the corrosion of the metal surface is negligible. The solution formed by the snow melting agent has good protection and fertility increasing performance on soil, can provide required nutrient elements for plants, has no harm to surrounding water bodies, and can remove toxic substances such as chlorine, ammonia, copper ions and the like in water, wherein the toxic substances are formed by the groups-COOH and-SO of the copolymer3H plays a role. The snow melting effect is good, and the snow melting speed is high. The snow-melting agent is highly soluble, and when dissolved in water, the concentration of ions in water increases to lower the vapor pressure of the liquid phase of water, but the vapor pressure of the solid phase of ice does not change. In order to achieve the state that the solid-liquid vapor pressure of the ice-water mixture is equal, the ice is dissolved.
Drawings
FIG. 1 is a flow chart of the preparation of the snow-melting agent in the embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Test materials, reagents and the like used in the following examples are commercially available unless otherwise specified.
The specific techniques or conditions not specified in the examples can be performed according to the techniques or conditions described in the literature in the field or according to the product specification.
FIG. 1 is a flow chart of the preparation of the snow-melting agent in the following examples.
Example 1
The embodiment provides a preparation method of a snow-melting agent, which is implemented according to the following steps:
step one, synthesizing a copolymer of acrylic acid and sodium propylene sulfonate: according to the mass ratio of 2:2:1, firstly adding 8g of water, 8g of acrylic acid and 4g of sodium propylene sulfonate, stirring for dissolving, heating to 70 ℃, dropwise adding 0.6g of potassium persulfate initiator aqueous solution into a bottle, and reacting at constant temperature for 4 hours to obtain colorless or light yellow transparent viscous liquid;
step two, adding the following raw materials in percentage by mass into a stirrer for mixing and stirring: 30% sodium formate, 20% potassium acetate, 9% potassium phosphate, 9% calcium oxide, 12% propylene glycol and 10% water to obtain a primary mixture;
continuously adding 10 percent by mass of acrylic acid and sodium propylene sulfonate copolymer into the primary mixture, and uniformly stirring;
and step four, solidifying and molding the mixture obtained in the step three through a granulator to form spherical particles with the diameter of 3-5 mm.
Example 2
The embodiment provides a preparation method of a snow-melting agent, which is implemented according to the following steps:
step one, synthesizing a copolymer of acrylic acid and sodium propylene sulfonate: according to the mass ratio of 2:2:1, firstly adding 8g of water, 8g of acrylic acid and 4g of sodium propylene sulfonate, stirring for dissolving, heating to 70 ℃, dropwise adding 0.6g of potassium persulfate initiator aqueous solution into a bottle, and reacting at constant temperature for 4 hours to obtain colorless or light yellow transparent viscous liquid;
step two, adding the following raw materials in percentage by mass into a stirrer for mixing and stirring: 35% sodium formate, 15% potassium acetate, 10% potassium phosphate, 8% calcium oxide, 13% propylene glycol and 8% water to obtain a primary mixture;
continuously adding 10 percent by mass of acrylic acid and sodium propylene sulfonate copolymer into the primary mixture, and uniformly stirring;
and step four, solidifying and molding the mixture obtained in the step three through a granulator to form spherical particles with the diameter of 3-5 mm.
Example 3
The embodiment provides a preparation method of a snow-melting agent, which is implemented according to the following steps:
step one, synthesizing a copolymer of acrylic acid and sodium propylene sulfonate: according to the mass ratio of 2:2:1, firstly adding 8g of water, 8g of acrylic acid and 4g of sodium propylene sulfonate, stirring for dissolving, heating to 70 ℃, dropwise adding 0.6g of potassium persulfate initiator aqueous solution into a bottle, and reacting at constant temperature for 4 hours to obtain colorless or light yellow transparent viscous liquid;
step two, adding the following raw materials in percentage by mass into a stirrer for mixing and stirring: 40% sodium formate, 10% potassium acetate, 8% potassium phosphate, 10% calcium oxide, 13% propylene glycol and 9% water to obtain a primary mixture;
continuously adding 10 percent by mass of acrylic acid and sodium propylene sulfonate copolymer into the primary mixture, and uniformly stirring;
and step four, solidifying and molding the mixture obtained in the step three through a granulator to form spherical particles with the diameter of 3-5 mm.
The snow-melting agent obtained in example 1 to example 3, comparative example CaCl2·2H2Detecting the O snow-melting agent, wherein the specific detection steps are as follows:
freezing point test: the samples and the comparative samples were each prepared in a 29% strength solution, and the freezing point was measured according to the Petroleum freezing point test for Engine Coolant (SH/T0090-91) of the national standards of the petrochemical industry.
Measurement of snow and ice melting capability: taking 8 100mL beakers, containing 15mL of water in equal amount in four beakers and 25mL of 29% snow-melting agent aqueous solution in equal amount in four beakers, freezing for 3h in a refrigerator at 25 ℃, spraying the snow-melting agent aqueous solutions with different proportions on ice, and measuring the ice melting amount after 0.5h by using a pouring method. The snow and ice melting capability is detected according to the national standard of the people's republic of China, namely snow melting agent (GB/T23851-.
And (3) determination of acid-base property: the pH value is regulated to be within the range of 6.0-9.0 in the national ground water environment quality standard (GHZBI-1999).
Specific detection results are shown in table 1.
Table 1 shows examples 1 to 3, CaCl2·2H2Performance characterization comparison table of O aqueous solution
| Detecting items | Example 1 | Example 2 | Example 3 | Comparative example |
| Freezing point | -45℃ | -43℃ | -40℃ | -32℃ |
| Snow and ice melting capability | 213％ | 209％ | 204％ | 100％ |
| pH | 7.89 | 7.82 | 7.75 | 8.2 |
As can be seen from Table 1, the snow melting agent prepared by the invention has the advantages of low freezing point, good ice melting effect, high ice melting speed, better chemical ice melting capability and pH value of 7.5-8.5, and meets the requirement of environmental protection.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A preparation method of a snow-melting agent is characterized by comprising the following steps: the method comprises the following steps:
(1) preparation of acrylic acid and sodium propylene sulfonate copolymer: mixing water, acrylic acid and sodium allylsulfonate in proportion, stirring for dissolving, heating to 60-70 ℃, adding an initiator, and reacting at constant temperature for 3-4 h to obtain colorless or light yellow transparent viscous liquid;
(2) mixing and stirring sodium formate, potassium acetate, potassium phosphate, calcium oxide, propylene glycol and water to obtain a primary mixture;
(3) adding the acrylic acid and sodium propylene sulfonate copolymer obtained in the step (1) into the primary mixture obtained in the step (2), and stirring;
(4) and (4) granulating and forming the mixture in the step (3) to obtain the snow-melting agent.
2. A method for producing a snow-melting agent according to claim 1, characterized in that: the mass ratio of the water to the acrylic acid to the sodium allylsulfonate in the step (1) is 2:2: 1.
3. A method for producing a snow-melting agent according to claim 1, characterized in that: the initiator in the step (1) is potassium persulfate.
4. A method for producing a snow-melting agent according to claim 3, characterized in that: the addition amount of the potassium persulfate is 2-5% of the total amount of the monomers.
5. A method for producing a snow-melting agent according to claim 1, characterized in that: mixing and stirring 30-40 parts of sodium formate, 10-20 parts of potassium acetate, 7-10 parts of potassium phosphate, 5-10 parts of calcium oxide, 10-15 parts of propylene glycol and 8-10 parts of water to obtain a primary mixture, and then adding 10 parts of acrylic acid and sodium propylene sulfonate copolymer.
6. A method for producing a snow-melting agent according to claim 5, characterized in that: in the step (2), 30 parts of sodium formate, 20 parts of potassium acetate, 9 parts of potassium phosphate, 9 parts of calcium oxide, 12 parts of propylene glycol and 10 parts of water are mixed and stirred to obtain a primary mixture.
7. A method for producing a snow-melting agent according to claim 5, characterized in that: and (3) mixing and stirring 35 parts of sodium formate, 15 parts of potassium acetate, 10 parts of potassium phosphate, 8 parts of calcium oxide, 13 parts of propylene glycol and 8 parts of water to obtain a primary mixture.
8. A method for producing a snow-melting agent according to claim 5, characterized in that: and (3) mixing and stirring 40 parts of sodium formate, 10 parts of potassium acetate, 8 parts of potassium phosphate, 10 parts of calcium oxide, 13 parts of propylene glycol and 9 parts of water to obtain a primary mixture.
9. A method for producing a snow-melting agent according to claim 1, characterized in that: granulating the mixture in the step (3) by using a granulator to form spherical particles.
10. A snow-melting agent obtained by the production method according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110376900.6A CN113088257B (en) | 2021-04-08 | 2021-04-08 | Preparation method of snow-melting agent and prepared snow-melting agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110376900.6A CN113088257B (en) | 2021-04-08 | 2021-04-08 | Preparation method of snow-melting agent and prepared snow-melting agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113088257A true CN113088257A (en) | 2021-07-09 |
| CN113088257B CN113088257B (en) | 2024-01-30 |
Family
ID=76675240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110376900.6A Active CN113088257B (en) | 2021-04-08 | 2021-04-08 | Preparation method of snow-melting agent and prepared snow-melting agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113088257B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106915974A (en) * | 2017-02-16 | 2017-07-04 | 任云 | A kind of pitch, Concrete Highway road surface protection liquid and preparation method thereof |
| CN108395878A (en) * | 2018-02-13 | 2018-08-14 | 沈阳工业大学 | A kind of dedicated efficient green deicing salt in airport |
| CN110305625A (en) * | 2019-06-12 | 2019-10-08 | 刘培军 | A kind of rapidly and efficiently deicing salt |
-
2021
- 2021-04-08 CN CN202110376900.6A patent/CN113088257B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106915974A (en) * | 2017-02-16 | 2017-07-04 | 任云 | A kind of pitch, Concrete Highway road surface protection liquid and preparation method thereof |
| CN108395878A (en) * | 2018-02-13 | 2018-08-14 | 沈阳工业大学 | A kind of dedicated efficient green deicing salt in airport |
| CN110305625A (en) * | 2019-06-12 | 2019-10-08 | 刘培军 | A kind of rapidly and efficiently deicing salt |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113088257B (en) | 2024-01-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7063803B2 (en) | Composition for non-chloride based and less corrosive liquid type deicer | |
| CN103342988B (en) | Environment-friendly snow melting agent and preparation method thereof | |
| CN109748405B (en) | Temperature-resistant barium strontium sulfate scale inhibitor for oil field and preparation method thereof | |
| JP2000515900A (en) | Anti-icing compositions and methods | |
| CN105754549A (en) | Low-chloride snow-melting agent and preparation method and application thereof | |
| CN113088257A (en) | Preparation method of snow-melting agent and prepared snow-melting agent | |
| CN106915974B (en) | A kind of pitch, Concrete Highway road surface protection liquid and preparation method thereof | |
| CA2360190A1 (en) | Environmentally safe low corrosive de-icers and the manufacturing method thereof | |
| CN115028273B (en) | Scale inhibitor for chemical pipeline | |
| CN109370525B (en) | Dust-settling agent suitable for low-temperature environment and preparation method thereof | |
| CN111718688B (en) | Environment-friendly snow-melting agent and production method thereof | |
| EP0824575B1 (en) | Environmentally safe snow and ice dissolving liquid | |
| KR0158267B1 (en) | Deicer using line stone or waste cenent and method of making the same | |
| CN114292626B (en) | Organic chlorine-free environment-friendly liquid snow-melting agent | |
| CN108795384B (en) | Salt-dust-free low-chlorine environment-friendly snow melting agent and preparation method thereof | |
| CN110564369A (en) | Deicing and snow melting agent with low concrete corrosion rate and low freezing point and preparation method thereof | |
| CN110511725A (en) | Ice and snow melting agent and preparation method thereof is removed with environment-friendly type for a kind of scenic spot | |
| CN1088737C (en) | Agent for quick melting snow or ice, and method for preparing same | |
| KR102483140B1 (en) | Snow removal composition with excellent eco-friendliness and anti-freeze performance | |
| CN112723783B (en) | Organic-inorganic composite retarder suitable for magnesium phosphate repair material | |
| CN111961442A (en) | Environment-friendly clean snow-melting agent | |
| RU2141500C1 (en) | Composition for prevention of ice coating on roads | |
| CN115975599A (en) | Snow melting agent prepared from flue gas dust-collecting powder in ceramic grinding material production and preparation method thereof | |
| CN110819993B (en) | Long-acting corrosion inhibitor for solid chlorine salt snow-melting agent and preparation method thereof | |
| RU2219215C2 (en) | Acetate-based anti-ice-covering ground fluid |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |