CN112680189B - Mixed type slow-release snow-melting and deicing material, and preparation method and application method thereof - Google Patents
Mixed type slow-release snow-melting and deicing material, and preparation method and application method thereof Download PDFInfo
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Abstract
The invention discloses a mixed slow-release snow-melting and deicing material, a preparation method and an application method thereof, wherein each 100 parts by weight of the slow-release snow-melting and deicing material comprises the following components: 30-65 parts of ionic snow-melting active material, 25-60 parts of inorganic cementing material, 2-8 parts of gelation stability reinforcing agent and 0.3-5 parts of ionic buffering stabilizer. Compared with the traditional ionic snow-melting deicing agent, the snow-melting deicing material disclosed by the application has the advantages that under the condition of reducing the dosage of snow-melting deicing electrolyte (namely, the ionic snow-melting active material), a stable sol system containing high ionic strength is formed on the surface of a road surface, so that the snow-melting deicing efficiency is improved, and the skid resistance of the surface of the road is enhanced.
Description
Technical Field
The invention belongs to the field of snow-melting and deicing materials, and particularly relates to a mixed type slow-release snow-melting and deicing material, and a preparation method and an application method thereof.
Background
At present, snow-melting and deicing materials developed at home and abroad are various in variety, and comprise inorganic salt snow-melting agents, organic salt snow-melting agents and composite snow-melting agents. For cost reasons, inorganic salt snow-melting agents are mostly used in China, and particularly, the consumption of the chloride salt snow-melting agent is still more than 90%, and the chloride salt snow-melting agent comprises sodium chloride, calcium chloride, magnesium chloride and the like. The chloride salt type snow melting material has higher ionic strength, can greatly reduce the freezing point, has good snow melting effect and low price. However, the chlorine salt snow-melting agent has a remarkable erosion effect on metal objects such as concrete of roads, bridges and culverts and reinforcing steel bars inside the concrete, and a large amount of chlorine salt remained in the environment can salinize soil, thereby seriously harming the growth of road plants. CN103254871A discloses a compound corrosion inhibitor of a chloride salt type snow-melting agent and application thereof, and the effect of chloride salt corrosion inhibition is achieved through the synergistic effect of 7 substances. However, the method relates to accurate weighing and compounding of various materials, and increases the manufacturing difficulty. CN104893666A discloses an inorganic salt-releasing material and a preparation method and application thereof, wherein light-burned magnesium oxide, a saturated magnesium chloride solution, a salt and a coating additive are uniformly mixed, dried and crushed to obtain a solid gel material, the obtained solid gel material is uniformly mixed with a modifier to obtain the salt-releasing material, the salt-releasing material can be used as a snow-melting agent, but the wet coating-dry modification process adopted by the inorganic salt-releasing material uses a large amount of solvent, the product needs to be dried again, and the subsequent ball milling activation modification needs to be carried out on the sample, so that the cost is increased, and meanwhile, a large amount of salt-containing wastewater can be generated in wet processing, and the environmental pressure is increased.
It can be seen that although the ion buffer system and the inorganic gel system are used as snow melting and deicing materials in the prior art, the application is limited by the erosion effect on metal objects and the pressure caused by the environment.
Disclosure of Invention
In order to improve the technical problems, the invention provides a mixed type slow-release snow-melting and deicing material, and a preparation method and an application method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
a slow-release snow-melting and deicing material comprises, per 100 parts by weight: 30-65 parts of ionic snow-melting active material, 25-60 parts of inorganic cementing material, 2-8 parts of gelation stability reinforcing agent and 0.3-5 parts of ionic buffering stabilizer.
According to an embodiment of the present invention, the slow-release snow-melting and deicing material comprises, per 100 parts by weight: 35-62 parts of ionic snow-melting active material, 30-55 parts of inorganic cementing material, 3-6 parts of gelation stability reinforcing agent and 0.5-4.5 parts of ionic buffering stabilizer.
According to an embodiment of the present invention, the slow-release snow-melting and deicing material comprises, per 100 parts by weight: 50-60 parts of ionic snow-melting active material, 35-45 parts of inorganic cementing material, 5-6 parts of gelation stability reinforcing agent and 2-4 parts of ionic buffering stabilizer.
According to an embodiment of the present invention, the ionic snow-melting active material is selected from an alkali metal or alkaline earth metal acetate or a hydrate thereof, and/or an alkali metal or alkaline earth metal chloride or a hydrate thereof; for example, the acetate salt of the alkali metal or the alkaline earth metal or the hydrate thereof may be at least one selected from sodium acetate, potassium acetate, magnesium acetate, calcium acetate, and a hydrate corresponding to a salt; for example, the alkali metal or alkaline earth metal chloride salt or a hydrate thereof may be at least one selected from the group consisting of sodium chloride, potassium chloride, magnesium chloride, calcium chloride, and a hydrate corresponding to the salt. Illustratively, the ionic snow melt active material is sodium chloride, or a mixture of sodium chloride and calcium chloride hydrate, or a mixture of sodium chloride and sodium acetate.
According to the embodiment of the invention, the content of the ionic snow melting active material can be 30 parts, 35 parts, 40 parts, 45 parts, 47 parts, 50 parts, 55 parts, 60 parts and 65 parts.
According to the embodiment of the invention, when the ionic snow melting active material is a mixture of sodium chloride and calcium chloride hydrate, the mass ratio of the sodium chloride to the calcium chloride hydrate is (3-10):1, for example, (4-8):1, and preferably 6: 1.
According to the embodiment of the invention, when the ionic snow-melting active material is a mixture of sodium chloride and sodium acetate, the mass ratio of the sodium chloride to the sodium acetate is 1 (9-18), for example, 1 (11-15), and preferably 1: 13.
According to an embodiment of the present invention, the inorganic cementitious material is selected from at least one of gypsum, lime and metasilicate; preferably, the content of calcium sulfate hydrate in the inorganic cement material is at least 80 wt%. Wherein, the source of the inorganic cementing material can be various natural minerals or artificial synthesis modes.
According to an embodiment of the present invention, the content of the inorganic cement is 25 parts, 30 parts, 35 parts, 40 parts, 45 parts, 48 parts, 50 parts, 55 parts, 60 parts.
According to an embodiment of the present invention, the gelation stability enhancer is one, two or more selected from the group consisting of cellulose, modified cellulose, cellulose sulfonate, starch, modified starch, polyol-based high molecular compounds, polyether-based high molecular compounds, and the like.
For example, the modified cellulose may be selected from at least one of the following compounds including, but not limited to: carboxymethyl cellulose, cellulose acetate, cellulose diacetate, cellulose triacetate, cellulose butyrate, methyl cellulose, hydroxypropyl methyl cellulose, hydroxyethyl cellulose.
For example, the modified starch may be selected from at least one of the following compounds including, but not limited to: epoxypropyl starch, polyacrylamide graft copolymer starch, acetylated distarch adipate, hydroxypropyl distarch phosphate starch, octenyl succinate starch, carboxymethyl starch, methacrylic acid 2-isocyanate starch, octenyl succinate starch, phosphate starch and the like.
For example, the polyalcohol-based polymer compound may be selected from at least one of the following compounds including, but not limited to: polyvinyl alcohol, polyethylene glycol, polyglycerol, and the like; the molecular weight of polyvinyl alcohol and the polymerization degree of polyethylene glycol and polyglycerol are not particularly limited.
For example, the polyether-based high molecular compound may be a polyether polyol, for example, the polyether polyol is selected from at least one of the following compounds including but not limited to: propylene glycol polyether, propylene oxide glycol polyether, trimethylolpropane polyether, hydroxyl-terminated polytetrahydrofuran, tetrahydrofuran glycol polyether and tetrahydrofuran-propylene oxide copolymerized glycol.
According to an embodiment of the present invention, the content of the gelation stability enhancer may be 5 parts, 5.5 parts, 6 parts, 6.5 parts, 7 parts, 7.5 parts, 8 parts.
According to an embodiment of the present invention, the ionic buffering stabilizer is selected from one, two or more of water-soluble carbonate, bicarbonate, phosphate, hydrogen phosphate, dihydrogen phosphate and silicate. For example, the ionic buffering stabilizer may be selected from one, two or more selected from the group consisting of, but not limited to, sodium carbonate, potassium carbonate, ammonium carbonate, sodium bicarbonate, potassium phosphate, sodium phosphate, ammonium phosphate, potassium hydrogen phosphate, sodium hydrogen phosphate, ammonium hydrogen phosphate, calcium hydrogen phosphate, potassium dihydrogen phosphate, sodium dihydrogen phosphate, ammonium dihydrogen phosphate, calcium dihydrogen phosphate, ammonium silicate, potassium silicate and sodium silicate.
According to an embodiment of the present invention, the content of the ionic buffering stabilizer may be 2 parts, 2.5 parts, 3 parts, 3.5 parts, 4 parts, 4.5 parts, 5 parts.
According to an embodiment of the present invention, the ionic snow melt active material, the inorganic gelling material, the gelation stability enhancer and/or the ionic buffering stabilizer are in the form of powder, for example, powder capable of passing through a 10-mesh sieve, and further for example, powder capable of passing through a 20-mesh sieve.
The slow-release snow-melting deicing material provided by the invention utilizes the interaction of ice and snow melting water and an inorganic gelation system to construct a dual sol system integrating ion buffering and polymer skeleton reinforced inorganic gelation. In the process of forming a stable dual sol system, the sol keeps higher ionic strength, has stronger capability of lowering the freezing point, and can maintain higher snow melting and deicing capabilities while reducing the using amount of electrolyte; meanwhile, the stable sol system can not only maintain the continuous existence of the sol and prolong the snow melting time, but also keep the skid resistance of the road surface after snow melting. The slow-release snow-melting and deicing material provided by the invention greatly reduces the usage amount of chlorine element, lightens the environmental pressure, reduces the influence on the road ecology, and has wide application prospect.
The invention further provides a preparation method of the slow-release snow-melting and deicing material, which comprises the following steps:
(1) uniformly mixing the ionic snow-melting active material and the gelation-enhanced stabilizer according to the proportion to obtain a snow-melting salt mixture for later use;
(2) uniformly mixing the inorganic cementing material and the ionic buffering stabilizer according to the proportion to obtain a cementing material mixture for later use;
the ionic snow melt active material, inorganic gelling material, gel enhancing stabilizer and ionic buffering stabilizer are selected as described above.
According to an embodiment of the invention, in the step (1), the ionic snow-melting active material can be subjected to crushing and screening treatment before use, and undersize is taken; for example, the crushed ionic snow melt active material may be passed through a sieve of not less than 10 mesh, preferably greater than 20 mesh.
According to an embodiment of the present invention, in the step (2), the inorganic gelling material may be subjected to crushing and screening treatment before use, and undersize is taken; for example, the crushed inorganic gelling agent may be passed through a sieve of not less than 10 meshes, preferably, may be passed through a sieve of more than 20 meshes.
According to an embodiment of the present invention, the mixture of snow-melting salts prepared in step (1) and the mixture of gelling materials prepared in step (2) are stored separately in a dry environment.
The invention also provides an application method of the slow-release snow-melting and deicing material, which comprises the following steps: and (3) uniformly mixing the snow melting salt mixture obtained in the preparation method, the binding material mixture and the optional added or not added antiskid material, and applying the mixture on the ice and snow road surface.
According to an embodiment of the present invention, the anti-slip material may be selected from a physical type anti-slip material having a neutral or near neutral pH, for example, at least one selected from sand, furnace dust, stone powder, and the like, and exemplified by granite stone dust or rice hull pyrolysis furnace dust. The form of the anti-slip material is not particularly limited, and those skilled in the art will understand that the anti-slip material may be applied in a desired form according to the condition of the ice and snow road surface.
According to an embodiment of the invention, the mass ratio of the non-slip material to the mixture of snow melting salts is 1 (0.5-5), such as 1 (1-4), exemplarily 1: 1.
According to the embodiment of the invention, after the materials are uniformly mixed, the mixed materials are placed under a low-temperature drying condition for standby. For example, the low temperature condition is-30 ℃ to 10 ℃, preferably-15 ℃ to 0 ℃; for example, the constant temperature time can be adjusted according to the temperature of the mixed material before application, such as the constant temperature time is not less than 0.5 h.
The invention has the beneficial effects that:
(1) the snow-melting and deicing material is a mixed type slow-release snow-melting and deicing agent formed by adding an ion buffering stabilizer and compounding an inorganic gel material with macromolecules and/or polymers playing a role in gel stability enhancement on the basis of the traditional ionic snow-melting agent. Compared with the traditional ionic snow-melting agent, under the condition of reducing the dosage of snow-melting deicing electrolyte (namely, ionic snow-melting active material), a stable sol system containing high ionic strength is formed on the surface of the road surface, so that the snow-melting deicing efficiency is improved, and the skid resistance of the road surface is enhanced.
(2) Compared with the traditional chlorine salt snow-melting agent, the snow-melting deicing material can reduce the consumption of chlorine salt by more than 30 percent and reduce the influence of soluble salt ions on the ecology of a road area; in addition, the gelling component in the material also contributes to soil improvement and reduces the damage of crops.
(3) In the mixed type slow-release snow-melting and deicing material, the ionic type snow-melting active material not only can be selected from a chloride snow-melting agent, but also can be expanded to be a compound of acetate and chloride, and the application range is wide.
(4) The mixed slow-release snow-melting and deicing material disclosed by the invention is simple in preparation method, easily available in raw materials and easy to realize industrial production.
Detailed Description
The technical solution of the present invention will be further described in detail with reference to specific embodiments. It is to be understood that the following examples are only illustrative and explanatory of the present invention and should not be construed as limiting the scope of the present invention. All the technologies realized based on the above-mentioned contents of the present invention are covered in the protection scope of the present patent.
Unless otherwise indicated, the raw materials and reagents used in the following examples are all commercially available products or can be prepared by known methods.
Example 1
Putting 250.38g of NaCl into a crusher, crushing, sieving with a 20-mesh sieve, adding 25.36g of carboxymethyl cellulose, uniformly mixing in a high-speed mechanical stirring manner to obtain a snow-melting salt mixture, and sealing and packaging for later use.
Mixing CaSO4·2H2321.13g of gypsum powder with O mass content not less than 80 percent is put into a crusher to be crushed, and then is sieved by a 20-mesh sieve, and CaHPO is added42.63g of the mixture is uniformly mixed in a high-speed mechanical stirring way to obtain a gelled material mixture, and the gelled material mixture is sealed and packaged for later use.
0.5g of each of the two mixed materials was uniformly mixed, and the mixture was directly applied to a piece of ice having a weight of 5cm × 3cm × 1cm and about 15g at a constant temperature of-15 ℃ for 3 hours.
For comparison, 1g of NaCl was placed on ice blocks in the same environment and the same specification, and the remaining tests were carried out according to the relevant regulations of the relative snow melting and ice melting capability test in the national standard GB T23851-2017 snow melting agent, so that the snow melting and ice melting capabilities of the relatively pure sodium chloride in 30 minutes, 60 minutes and 120 minutes of example 1 (the snow melting and ice melting capability of the pure sodium chloride is recorded as 100%) were 96.19%, 128.73% and 188.24%, respectively. Example melt water pH 7.8.
Example 2
And (3) putting 250.38g of NaCl into a crusher, crushing, sieving with a 20-mesh sieve, adding 25.36g of carboxymethyl cellulose, uniformly mixing in high-speed mechanical stirring to obtain a snow-melting salt mixture, and sealing and packaging for later use.
CaSO4·2H2321.13g of gypsum powder with O mass content not less than 80 percent is put into a crusher to be crushed, and then is sieved by a 20-mesh sieve, and CaHPO is added42.63g of the mixture is uniformly mixed in a high-speed mechanical stirring way to obtain a gelled material mixture, and the gelled material mixture is sealed and packaged for later use.
0.5g of each of the two mixed materials is mixed, then mixed with 0.5g of granite stone chips uniformly, and applied on an ice block with the weight of 5cm multiplied by 3cm multiplied by 1cm after the temperature is kept at-15 ℃ for 3 hours.
For comparison, 1g of NaCl was placed on ice blocks in the same environment and the same specification, and the remaining tests were carried out according to the relevant regulations of the relative snow melting and ice melting capability test in the national standard GB T23851-2017 snow melting agent, so that the snow melting and ice melting capabilities of the relatively pure sodium chloride in 30 minutes, 60 minutes and 120 minutes of example 2 (the snow melting and ice melting capability of the pure sodium chloride is recorded as 100%) were 90.86%, 100.53% and 148.33%, respectively. Example melt water pH 7.6.
Example 3
301.52g NaCl and CaCl2·2H2And putting 50.93g of the mixture into a crusher, crushing the mixture, sieving the crushed mixture with a 20-mesh sieve, adding 31.96g of carboxymethyl cellulose, uniformly mixing the mixture in a high-speed mechanical stirring manner to obtain a snow-melting salt mixture, and sealing and packaging the mixture for later use.
CaSO4·2H2559.35g of gypsum powder with O content not less than 80 percent by mass and 59.06g of hydrated lime powder with CaO content not less than 85 percent by mass are put into a crusher together to be crushed, and then the crushed mixture is sieved by a 20-mesh sieve, and KH is added2PO437.63g, and mixing uniformly in a high-speed mechanical stirring manner to obtain a gel material mixture, and sealing and packaging for later use.
0.5g of each of the two mixed materials is mixed, then mixed with 0.5g of granite stone chips uniformly, and applied on an ice block with the weight of 5cm multiplied by 3cm multiplied by 1cm after the temperature is kept at-15 ℃ for 3 hours.
For comparison, 1g of NaCl was placed on ice blocks in the same environment and the same specification, and the relative snow and ice melting capacities of the pure sodium chloride in 30 minutes, 60 minutes and 120 minutes (the snow and ice melting capacity of the pure sodium chloride is recorded as 100%) of example 3 were 116.47%, 128.76% and 134.27% respectively, which were tested according to the relevant regulations of the relative snow and ice melting capacity test in the national standard GB T23851-2017 snow and the like. Example melt water pH 8.2.
Example 4
301.52g NaCl and CaCl2·2H2And putting 50.93g of the mixture into a crusher, crushing the mixture, sieving the crushed mixture with a 20-mesh sieve, adding 31.96g of carboxymethyl cellulose, uniformly mixing the mixture in a high-speed mechanical stirring manner to obtain a snow-melting salt mixture, and sealing and packaging the mixture for later use.
CaSO4·2H2559.35g of gypsum powder with O content not less than 80 percent by mass and 59.06g of hydrated lime powder with CaO content not less than 85 percent by mass are put into a crusher together to be crushed, and then the crushed mixture is sieved by a 20-mesh sieve, and KH is added2PO437.63g, and mixing uniformly in a high-speed mechanical stirring manner to obtain a gel material mixture, and sealing and packaging for later use.
0.5g of each of the two mixed materials is mixed, then the mixture is uniformly mixed with 0.5g of furnace ash obtained after the thermal decomposition of the rice hulls, and the mixture is applied to an ice block which is 5cm multiplied by 3cm multiplied by 1cm and has the weight of about 15g after the constant temperature of-15 is 3 hours.
For comparison, 1g of NaCl was placed on ice blocks in the same environment and the same specification, and the relative snow and ice melting capacities of the pure sodium chloride in 30 minutes, 60 minutes and 120 minutes (the snow and ice melting capacity of the pure sodium chloride is recorded as 100%) of example 4 were 103.81%, 129.91% and 157.26% respectively, when the remaining tests were carried out according to the relevant regulations of the relative snow and ice melting capacity test in the national standard GB T23851-2017 snow and ice melting agent. Example melt water pH 7.4.
Example 5
And (3) putting 44.28g of NaCl and 556.53g of sodium acetate into a grinder, crushing, sieving with a 20-mesh sieve, adding 42.68g of carboxymethyl cellulose, uniformly mixing in a high-speed mechanical stirring manner to obtain a snow-melting salt mixture, and sealing and packaging for later use.
CaSO4·2H2364.99g of gypsum powder with O content not less than 80 percent by mass is put into a crusher to be crushed, and then is sieved by a 20-mesh sieve, and KH is added2PO443.32g of the mixture is uniformly mixed in a high-speed mechanical stirring manner to obtain a gelled material mixture, and the gelled material mixture is hermetically packaged for later use.
0.5g of each of the two mixed materials was uniformly mixed, and the mixture was applied to a piece of ice having a weight of 5cm X3 cm X1 cm and a weight of about 15g after 3 hours at a constant temperature of-15 ℃.
For comparison, 1g of NaCl was placed on ice blocks in the same environment and the same specification, and the relative snow and ice melting capacities of the pure sodium chloride in 30 minutes, 60 minutes and 120 minutes (the snow and ice melting capacity of the pure sodium chloride is recorded as 100%) of example 5 were 113.73%, 127.84% and 134.28% respectively, when the remaining tests were carried out according to the relevant regulations of the relative snow and ice melting capacity test in the national standard GB T23851-2017 snow and ice melting agent. Example melt water pH 6.7.
The embodiments of the present invention have been described above. However, the present invention is not limited to the above embodiment. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (26)
1. The slow-release snow-melting and deicing material is characterized in that each 100 parts by weight of the slow-release snow-melting and deicing material comprises: 30-65 parts of ionic snow-melting active material, 25-60 parts of inorganic cementing material, 2-8 parts of gelling stability reinforcing agent and 0.3-5 parts of ionic buffering stabilizer;
the ionic snow-melting active material is selected from acetate of alkali metal or alkaline earth metal or hydrate thereof, and/or chloride of alkali metal or alkaline earth metal or hydrate thereof;
the inorganic cementing material is selected from at least one of gypsum, lime and metasilicate;
the gelation stability reinforcing agent is one or two or more selected from cellulose, modified cellulose, cellulose sulfonate, starch, modified starch, polyalcohol high molecular compounds and polyether high molecular compounds;
the ionic buffering stabilizer is one, two or more selected from water-soluble carbonate, bicarbonate, phosphate, hydrogen phosphate, dihydrogen phosphate and silicate.
2. The slow-release snow-melting and deicing material according to claim 1, wherein each 100 parts by weight of the slow-release snow-melting and deicing material comprises: 35-62 parts of ionic snow-melting active material, 30-55 parts of inorganic cementing material, 3-6 parts of gelation stability reinforcing agent and 0.5-4.5 parts of ionic buffering stabilizer.
3. The slow-release snow-melting and deicing material according to claim 1, wherein each 100 parts by weight of the slow-release snow-melting and deicing material comprises: 50-60 parts of ionic snow-melting active material, 35-45 parts of inorganic cementing material, 5-6 parts of gelation stability reinforcing agent and 2-4 parts of ionic buffering stabilizer.
4. A slow-release snow-melting and deicing material as claimed in any one of claims 1 to 3, wherein the acetate salt of an alkali metal or an alkaline earth metal or a hydrate thereof is selected from at least one of sodium acetate, potassium acetate, magnesium acetate, calcium acetate, and a hydrate corresponding to a salt; the chlorine salt of the alkali metal or the alkaline earth metal or the hydrate thereof is at least one selected from sodium chloride, potassium chloride, magnesium chloride, calcium chloride and a hydrate corresponding to the salt.
5. A slow-release snow-melting and deicing material as claimed in any one of claims 1 to 3, wherein the ionic snow-melting active material is sodium chloride, or a mixture of sodium chloride and calcium chloride hydrate, or a mixture of sodium chloride and sodium acetate.
6. The slow-release snow-melting and deicing material as claimed in claim 5, wherein when the ionic snow-melting active material is a mixture of sodium chloride and calcium chloride hydrate, the mass ratio of sodium chloride to calcium chloride hydrate is (3-10): 1.
7. The slow-release snow-melting and deicing material according to claim 6, wherein the mass ratio of the sodium chloride to the calcium chloride hydrate is 6: 1.
8. The slow-release snow-melting and deicing material as claimed in claim 5, wherein when the ionic snow-melting active material is a mixture of sodium chloride and sodium acetate, the mass ratio of the sodium chloride to the sodium acetate is 1 (9-18).
9. The slow-release snow-melting and deicing material according to claim 8, wherein the mass ratio of sodium chloride to sodium acetate is 1: 13.
10. A slow release snow-melting and deicing material according to any one of claims 1 to 3, wherein the inorganic gelling material is gypsum having a calcium sulfate hydrate content of at least 80% by weight.
11. A slow-release snow-melting and deicing material according to any one of claims 1 to 3, wherein the modified cellulose is selected from at least one of the following compounds: carboxymethyl cellulose, cellulose acetate, cellulose diacetate, cellulose triacetate, cellulose butyrate, methyl cellulose, hydroxypropyl methyl cellulose, hydroxyethyl cellulose.
12. A slow-release snow-melting and deicing material according to any one of claims 1 to 3, wherein the modified starch is selected from at least one of the following compounds: epoxypropyl starch, polyacrylamide graft copolymer starch, acetylated distarch adipate, hydroxypropyl distarch phosphate starch, octenyl succinic acid starch, carboxymethyl starch, methacrylic acid 2-isocyanate starch, octenyl succinic acid starch and phosphate starch.
13. A slow-release snow-melting and deicing material as claimed in any one of claims 1 to 3, wherein said polyalcohol-based polymer compound is selected from at least one of the following compounds: polyvinyl alcohol, polyethylene glycol and polyglycerol.
14. The slow-release snow-melting and deicing material according to any one of claims 1 to 3, wherein the polyether-based polymer compound is a polyether polyol selected from at least one of the following compounds: propylene glycol polyether, propylene oxide glycol polyether, trimethylolpropane polyether, hydroxyl-terminated polytetrahydrofuran, tetrahydrofuran glycol polyether and tetrahydrofuran-propylene oxide copolymerized glycol.
15. A slow-release snow-melting and deicing material as claimed in any one of claims 1 to 3, wherein the ionic buffer stabilizer is one, two or more selected from the group consisting of sodium carbonate, potassium carbonate, ammonium carbonate, sodium hydrogen carbonate, potassium hydrogen carbonate, calcium hydrogen carbonate, potassium phosphate, sodium phosphate, ammonium phosphate, potassium hydrogen phosphate, sodium hydrogen phosphate, ammonium hydrogen phosphate, calcium hydrogen phosphate, potassium dihydrogen phosphate, sodium dihydrogen phosphate, ammonium dihydrogen phosphate, calcium dihydrogen phosphate, ammonium silicate, potassium silicate and sodium silicate.
16. The slow-release snow-melting and deicing material according to any one of claims 1 to 3, wherein the ionic snow-melting active material, the inorganic gelling material, the gelling stability enhancer and/or the ionic buffer stabilizer are in the form of powder.
17. A method for producing a sustained-release snow-melting and deicing material as claimed in any one of claims 1 to 16, characterized by comprising the steps of:
(1) uniformly mixing the ionic snow-melting active material and the gelling reinforcing stabilizer according to the proportion to obtain a snow-melting salt mixture for later use;
(2) and (3) uniformly mixing the inorganic cementing material and the ionic buffering stabilizer according to the proportion to obtain a cementing material mixture for later use.
18. The method of claim 17,
in the step (1), the ionic snow-melting active material is crushed and sieved before use, and undersize products are taken.
19. The preparation method according to claim 17, wherein in the step (2), the inorganic cement is crushed and sieved before use, and undersize products are taken out.
20. The method according to any one of claims 17 to 19, wherein the mixture of snow-melting salts prepared in step (1) and the mixture of cementitious material prepared in step (2) are stored separately in a dry environment.
21. A method of applying a slow release snow-melting and deicing material as claimed in any one of claims 1 to 16, characterized in that said method of applying comprises the steps of: the mixture of the snow-melting salt and the mixture of the binding material obtained in the preparation method according to any one of claims 17 to 20, and the optional additional or non-additional anti-slip material are uniformly mixed and applied to the ice and snow road surface.
22. The method of application of claim 21, wherein the non-slip material is selected from physical non-slip materials that are pH neutral or near neutral.
23. The application method according to claim 22, wherein the non-slip material is selected from at least one of sand, furnace dust, stone dust and stone dust.
24. The application method according to claim 22, wherein the non-slip material is granite stone chips or rice hull pyrolysis furnace ash.
25. An application method according to any one of claims 21 to 24, wherein the mass ratio of the non-slip material to the mixture of snow-melting salts is 1 (0.5-5).
26. The application method as claimed in any one of claims 21 to 24, wherein after the materials are mixed uniformly, the mixed materials are placed in a low-temperature drying condition for standby.
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| CN114292625B (en) * | 2021-12-31 | 2022-09-06 | 吉林省交通科学研究所 | Road snow-melting agent and preparation method and application thereof |
| CN116376518A (en) * | 2023-04-12 | 2023-07-04 | 成都理工大学 | Preparation method of environment-friendly snow-melting agent |
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| GB1308780A (en) * | 1969-12-20 | 1973-03-07 | Fisons Ltd | De-icing composition |
| CN103820081B (en) * | 2014-02-28 | 2016-04-06 | 呼和浩特铁路局科研所 | A kind of Snow Agent |
| CN106281224B (en) * | 2016-08-09 | 2018-08-14 | 长安大学 | A kind of high-efficiency environment friendly composite snow-melting agent and preparation method thereof |
| CN108048038A (en) * | 2018-02-11 | 2018-05-18 | 柳昊辰 | Ice melting agent and preparation method thereof |
| CN110551484B (en) * | 2018-06-04 | 2021-05-14 | 江苏省制盐工业研究所有限公司 | Efficient mixed environment-friendly snow-melting agent |
| CN110964484B (en) * | 2019-11-22 | 2021-04-20 | 吉林大学 | Environment-friendly snow-melting anti-skid particle |
| CN111675506B (en) * | 2020-05-29 | 2022-07-29 | 山东高速集团有限公司创新研究中心 | Anti-freezing agent and preparation method thereof |
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