Environment-friendly snow-melting and deicing composition and preparation method thereof

Abstract

The invention relates to the technical field of snow-melting agents, and particularly discloses an environment-friendly snow-melting and deicing composition and a preparation method thereof. The environment-friendly snow-melting and deicing composition comprises organic acid salt sustained-release microspheres, the organic acid salt sustained-release microsphere comprises a core material and a shell layer wrapping the core material, and according to the total weight of the organic acid salt sustained-release microsphere, the core material comprises the following raw materials in parts by weight: 30-45 parts of calcium magnesium acetate, 10-20 parts of sodium formate, 15-25 parts of potassium acetate, 8-15 parts of urea, 1-3 parts of a surfactant and 2-5 parts of a corrosion inhibitor; the shell layer is prepared from the following raw materials in parts by weight: 5 to 8 parts of sodium alginate, 3 to 6 parts of chitosan, 2 to 4 parts of calcium chloride, 1 to 3 parts of carboxymethyl cellulose and 1 to 2 parts of nano silicon dioxide. The snow melting and deicing speed of the environment-friendly snow melting and deicing composition in a severe cold environment can be increased.

Description

Technical Field

[0001] This invention relates to the technical field of snow-melting agents, and in particular to an environmentally friendly snow-melting and ice-de-de-icing composition and its preparation method. Background Technology

[0002] Currently, de-icing agents are mainly divided into two categories: chloride-based and non-chloride-based. Chloride-based de-icing agents contain chloride ions, which have strong penetrating and corrosive properties and can severely damage materials such as metals and concrete. Non-chloride-based de-icing agents mainly consist of potassium acetate, sodium acetate, calcium magnesium acetate, etc., and are environmentally friendly and non-corrosive, but they are expensive and have relatively poor snow-melting and ice-removing capabilities.

[0003] Among related technologies, a biomass-based environmentally friendly non-chlorine de-icing and snow-melting agent is disclosed, composed of the following raw materials in molar proportions: 10-30 parts tap water, 15-35 parts glucose degradation products, 6-20 parts starch degradation products, 8-18 parts sucrose, 7-18 parts glyceryl monocitrate, and 2-5 parts corrosion inhibitor. The main components of this de-icing agent are sugar derivatives and organic acid salts, which can lower the freezing point. It does not contain chloride ions, has weak corrosive effects, and since the raw materials are primarily biomass, it has minimal impact on seed germination rates, making it an environmentally friendly product.

[0004] However, organic acid salts melt snow and ice much slower than chloride salts, especially in the cold winters of northern regions where temperatures can drop below -30°C, where the melting rate is even slower and snow and ice may not be cleared in time. Summary of the Invention

[0005] To improve the snow melting and de-icing speed of organic acid salt de-icing agents in frigid regions, this application provides an environmentally friendly snow melting and de-icing composition and its preparation method.

[0006] Firstly, this application provides an environmentally friendly snow-melting and ice-de-de-icing composition, which adopts the following technical solution: An environmentally friendly snow-melting and ice-de-de-icing composition includes organic acid salt slow-release microspheres; the organic acid salt slow-release microspheres include a core material and a shell layer encapsulating the core material. Based on the total weight of the organic acid salt slow-release microspheres, the core material comprises the following raw materials in parts by weight: 30-45 parts calcium magnesium acetate, 10-20 parts sodium formate, 15-25 parts potassium acetate, 8-15 parts urea, 1-3 parts surfactant, and 2-5 parts corrosion inhibitor; the shell layer comprises the following raw materials in parts by weight: 5-8 parts sodium alginate, 3-6 parts chitosan, 2-4 parts calcium chloride, 1-3 parts carboxymethyl cellulose, and 1-2 parts nano-silica.

[0007] In one specific feasible embodiment, the organic acid salt sustained-release microspheres are prepared according to the following steps: According to the formula, calcium magnesium acetate, sodium formate, potassium acetate and urea are mixed and added to deionized water. The mixture is stirred in a water bath at 60-80℃. Surfactants and corrosion inhibitors are added and stirred evenly to obtain a core material mixed solution. According to the formula, dissolve sodium alginate in deionized water, then add chitosan, calcium chloride, carboxymethyl cellulose and nano silica in sequence, mix well, and adjust the pH to 5.0-6.0 to obtain the wall material mixed solution; The core material mixture solution was added dropwise to the wall material mixture solution, and emulsified at 8000-12000 rpm for 5-10 minutes to obtain a water-in-water emulsion. After spray drying, organic acid salt sustained-release microspheres were obtained.

[0008] In one specific implementation, the surfactant comprises rhamnolipin and tea polyphenols in a weight ratio of 1:(0.8-1.2).

[0009] In one specific implementation, the corrosion inhibitor comprises triisopropanolamine, sodium gluconate, and phytic acid in a weight ratio of (2-4):(2-6):1.

[0010] In one specific implementation, the environmentally friendly snow-melting and ice-de-de-icing composition further includes sodium dodecyl sulfate, wherein the weight ratio of sodium dodecyl sulfate to organic acid salt slow-release microspheres is (2-5):100.

[0011] In one specific implementation, the environmentally friendly snow-melting and ice-de-de-icing composition further includes ethylene glycol monobutyl ether, wherein the weight ratio of ethylene glycol monobutyl ether to organic acid salt sustained-release microspheres is (3-8):100.

[0012] In one specific implementation, the environmentally friendly snow-melting and de-icing composition further includes calcium peroxide, wherein the weight ratio of calcium peroxide to organic acid salt slow-release microspheres is (1-3):100.

[0013] Secondly, this application provides a method for preparing an environmentally friendly snow-melting and ice-de-de-icing composition, which adopts the following technical solution: A method for preparing an environmentally friendly snow-melting and ice-de-de-icing composition includes the following steps: Organic acid salt slow-release microspheres, sodium dodecyl sulfate, ethylene glycol monobutyl ether, and calcium peroxide are mixed evenly in a ratio of 100:(2-5):(3-8):(1-3) to obtain an environmentally friendly snow-melting and ice-de-de-icing composition.

[0014] In summary, this application has the following beneficial effects: 1. This application, by using core materials and shells with limited raw material ratios and preparing organic acid salt slow-release microspheres, can obtain a snow-melting and de-icing composition suitable for extremely cold environments of -30°C, which helps to improve the snow-melting and de-icing speed of the environmentally friendly snow-melting and de-icing composition in extremely cold environments.

[0015] 2. In this application, rhamnolipin and tea polyphenols are preferably used in a weight ratio of 1:(0.8-1.2), and triisopropanolamine, sodium gluconate and phytic acid are used in a weight ratio of (2-4):(2-6):1, which helps to further improve the snow melting and ice melting speed of the environmentally friendly snow melting and ice melting composition in severe cold environments.

[0016] 3. In this application, sodium dodecyl sulfate, ethylene glycol monobutyl ether and calcium peroxide are preferably added, which can further improve the snow melting and de-icing speed of the environmentally friendly snow melting and de-icing composition in severe cold environments. Detailed Implementation

[0017] Unless otherwise specified, all raw materials used in this application are commercially available. Calcium magnesium acetate, 98% effective ingredient content. Rhamnolliposide, CAS No. 147858-26-2, 95% effective ingredient content. Tea polyphenols, CAS No. 84650-60-2, 98% effective ingredient content. Triisopropanolamine, CAS No. 122-20-3, 85% effective ingredient content. Sodium gluconate, CAS No. 527-07-1, 99% effective ingredient content. Phytic acid, CAS No. 83-86-3, 99% effective ingredient content. Sodium alginate, CAS No. 9005-38-3, 99% effective ingredient content. Chitosan, CAS No. 9012-76-4, 99% effective ingredient content. Nano-silica, grade HB-152.

[0018] The present application will be further described in detail below with reference to embodiments and comparative examples.

[0019] Example Example 1 This embodiment provides an environmentally friendly snow-melting and ice-de-de-icing composition, which is an organic acid salt slow-release microsphere comprising a core material and a shell encapsulating the core material.

[0020] Organic acid salt sustained-release microspheres were prepared according to the following steps: The core material comprises the following raw materials: 37.5 kg of calcium magnesium acetate, 15 kg of sodium formate, 20 kg of potassium acetate, 11.5 kg of urea, 2 kg of surfactant, and 3.5 kg of corrosion inhibitor. The surfactant consists of rhamnolipid and tea polyphenols in a 1:1 weight ratio. The corrosion inhibitor consists of triisopropanolamine, sodium gluconate, and phytic acid in a 3:4:1 weight ratio.

[0021] The shell consists of the following raw materials: 6.5 kg sodium alginate, 4.5 kg chitosan, 3 kg calcium chloride, 2 kg carboxymethyl cellulose, and 1.5 kg nano silica.

[0022] According to the formula, calcium magnesium acetate, sodium formate, potassium acetate and urea are mixed and added to deionized water. The mixture is stirred in a 70°C water bath, and surfactants and corrosion inhibitors are added. The mixture is stirred evenly to obtain a core material mixed solution.

[0023] According to the formula, sodium alginate is dissolved in deionized water, and chitosan, calcium chloride, carboxymethyl cellulose and nano silica are added in sequence. After mixing evenly, the pH is adjusted to 5.5 to obtain the wall material mixed solution.

[0024] The core material mixture was added dropwise to the wall material mixture and emulsified at 10,000 rpm for 7.5 minutes to obtain a water-in-water emulsion. After spray drying, organic acid salt slow-release microspheres were obtained.

[0025] By sealing and packaging organic acid salt slow-release microspheres, an environmentally friendly snow-melting and ice-de-de-icing composition is obtained.

[0026] Example 2 The only difference between this embodiment and Example 1 is that, in the preparation of the organic acid salt sustained-release microspheres, the core material includes the following raw materials: 30 kg of calcium magnesium acetate, 10 kg of sodium formate, 15 kg of potassium acetate, 8 kg of urea, 1 kg of surfactant, and 2 kg of corrosion inhibitor. The shell layer includes the following raw materials: 5 kg of sodium alginate, 3 kg of chitosan, 2 kg of calcium chloride, 1 kg of carboxymethyl cellulose, and 1 kg of nano-silica.

[0027] Example 3 The difference between this embodiment and Embodiment 1 lies only in that, in the preparation process of the organic acid salt sustained-release microspheres, the core material includes the following raw materials: 45 kg of calcium magnesium acetate, 20 kg of sodium formate, 25 kg of potassium acetate, 15 kg of urea, 3 kg of surfactant, and 5 kg of corrosion inhibitor. The shell layer includes the following raw materials: 8 kg of sodium alginate, 6 kg of chitosan, 4 kg of calcium chloride, 3 kg of carboxymethyl cellulose, and 2 kg of nano-silica.

[0028] Example 4 The only difference between this embodiment and Example 1 is that the surfactant includes rhamnolipin and tea polyphenols in a weight ratio of 1:0.6.

[0029] Example 5 The only difference between this embodiment and Example 1 is that the surfactant includes rhamnolipin and tea polyphenols in a weight ratio of 1:0.8.

[0030] Example 6 The only difference between this embodiment and Example 1 is that the surfactant includes rhamnolipin and tea polyphenols in a weight ratio of 1:1.2.

[0031] Example 7 The only difference between this embodiment and Example 1 is that the surfactant includes rhamnolipin and tea polyphenols in a weight ratio of 1:1.4.

[0032] Example 8 The only difference between this embodiment and Embodiment 1 is that the corrosion inhibitor includes triisopropanolamine, sodium gluconate and phytic acid in a weight ratio of 1:7:1.

[0033] Example 9 The only difference between this embodiment and Embodiment 1 is that the corrosion inhibitor includes triisopropanolamine, sodium gluconate and phytic acid in a weight ratio of 2:6:1.

[0034] Example 10 The only difference between this embodiment and Embodiment 1 is that the corrosion inhibitor includes triisopropanolamine, sodium gluconate and phytic acid in a weight ratio of 4:2:1.

[0035] Example 11 The only difference between this embodiment and Embodiment 1 is that the corrosion inhibitor includes triisopropanolamine, sodium gluconate and phytic acid in a weight ratio of 5:1:1.

[0036] Example 12 This embodiment provides an environmentally friendly snow-melting and ice-de-de-icing composition, comprising 100 kg of organic acid salt slow-release microspheres, 3.5 kg of sodium dodecyl sulfate, 5.5 kg of ethylene glycol monobutyl ether, and 2 kg of calcium peroxide. The organic acid salt slow-release microspheres include a core material and a shell encapsulating the core material.

[0037] Organic acid salt sustained-release microspheres were prepared according to the following steps: The core material comprises the following raw materials: 37.5 kg of calcium magnesium acetate, 15 kg of sodium formate, 20 kg of potassium acetate, 11.5 kg of urea, 2 kg of surfactant, and 3.5 kg of corrosion inhibitor. The surfactant consists of rhamnolipid and tea polyphenols in a 1:1 weight ratio. The corrosion inhibitor consists of triisopropanolamine, sodium gluconate, and phytic acid in a 3:4:1 weight ratio.

[0038] The shell consists of the following raw materials: 6.5 kg sodium alginate, 4.5 kg chitosan, 3 kg calcium chloride, 2 kg carboxymethyl cellulose, and 1.5 kg nano silica.

[0039] According to the formula, calcium magnesium acetate, sodium formate, potassium acetate and urea are mixed and added to deionized water. The mixture is stirred in a 70°C water bath, and surfactants and corrosion inhibitors are added. The mixture is stirred evenly to obtain a core material mixed solution.

[0040] According to the formula, sodium alginate is dissolved in deionized water, and chitosan, calcium chloride, carboxymethyl cellulose and nano silica are added in sequence. After mixing evenly, the pH is adjusted to 5.5 to obtain the wall material mixed solution.

[0041] The core material mixture was added dropwise to the wall material mixture and emulsified at 10,000 rpm for 7.5 minutes to obtain a water-in-water emulsion. After spray drying, organic acid salt slow-release microspheres were obtained.

[0042] Organic acid salt slow-release microspheres, sodium dodecyl sulfate, ethylene glycol monobutyl ether, and calcium peroxide are mixed evenly in the specified proportions to obtain an environmentally friendly snow-melting and ice-de-de-icing composition.

[0043] Example 13 The only difference between this embodiment and Embodiment 12 is that the environmentally friendly snow-melting and ice-de-de-icing composition includes 100 kg of organic acid salt slow-release microspheres, 2 kg of sodium dodecyl sulfate, 3 kg of ethylene glycol monobutyl ether, and 1 kg of calcium peroxide.

[0044] Example 14 The only difference between this embodiment and Embodiment 12 is that the environmentally friendly snow-melting and ice-de-de-icing composition includes 100 kg of organic acid salt slow-release microspheres, 5 kg of sodium dodecyl sulfate, 8 kg of ethylene glycol monobutyl ether, and 3 kg of calcium peroxide.

[0045] Example 15 The only difference between this embodiment and Example 1 is that, in the preparation process of the organic acid salt sustained-release microspheres, calcium magnesium acetate, sodium formate, potassium acetate and urea are mixed according to the ratio, added to deionized water, stirred in a 60°C water bath, and surfactant and corrosion inhibitor are added and stirred evenly to obtain a core material mixed solution.

[0046] According to the formula, sodium alginate is dissolved in deionized water, and chitosan, calcium chloride, carboxymethyl cellulose and nano silica are added in sequence. After mixing evenly, the pH is adjusted to 5.0 to obtain the wall material mixed solution.

[0047] The core material mixture solution was added dropwise to the wall material mixture solution, and emulsified at 8000 rpm for 5 minutes to obtain a water-in-water emulsion. After spray drying, organic acid salt slow-release microspheres were obtained.

[0048] Example 16 The only difference between this embodiment and Example 1 is that, in the preparation process of the organic acid salt slow-release microspheres, calcium magnesium acetate, sodium formate, potassium acetate and urea are mixed according to the ratio, added to deionized water, stirred in an 80°C water bath, and surfactant and corrosion inhibitor are added and stirred evenly to obtain a core material mixed solution.

[0049] According to the formula, sodium alginate is dissolved in deionized water, and chitosan, calcium chloride, carboxymethyl cellulose and nano silica are added in sequence. After mixing evenly, the pH is adjusted to 6.0 to obtain the wall material mixed solution.

[0050] The core material mixture solution was added dropwise to the wall material mixture solution, and emulsified at 12000 rpm for 10 minutes to obtain a water-in-water emulsion. After spray drying, organic acid salt slow-release microspheres were obtained.

[0051] Comparative Example Comparative Example 1 This comparative example provides an environmentally friendly snow-melting and ice-de-de-icing composition, comprising the following raw materials: 37.5 kg of calcium magnesium acetate, 15 kg of sodium formate, 20 kg of potassium acetate, 11.5 kg of urea, 2 kg of surfactant, 3.5 kg of corrosion inhibitor, 6.5 kg of sodium alginate, 4.5 kg of chitosan, 3 kg of calcium chloride, 2 kg of carboxymethyl cellulose, and 1.5 kg of nano-silica. The surfactant comprises rhamnolipid and tea polyphenols in a 1:1 weight ratio. The corrosion inhibitor comprises triisopropanolamine, sodium gluconate, and phytic acid in a 3:4:1 weight ratio.

[0052] According to the formula, calcium magnesium acetate, sodium formate, potassium acetate, urea, surfactant, corrosion inhibitor, sodium alginate, chitosan, calcium chloride, carboxymethyl cellulose and nano silica are mixed and stirred evenly to obtain an environmentally friendly snow melting and ice-removing composition.

[0053] Comparative Example 2 The only difference between this comparative example and Example 1 is that, in the preparation of the organic acid salt sustained-release microspheres, an equal amount of calcium magnesium acetate was used to replace urea.

[0054] Comparative Example 3 The only difference between this comparative example and Example 1 is that, in the preparation of the organic acid salt sustained-release microspheres, an equal amount of sodium alginate was used to replace chitosan.

[0055] Comparative Example 4 The only difference between this comparative example and Example 1 is that, in the preparation of the organic acid salt sustained-release microspheres, an equal amount of sodium alginate was used to replace the nano-silica.

[0056] Performance testing The following performance tests were conducted on the environmentally friendly snow-melting and ice-de-de-icing compositions prepared in Examples 1-16 and Comparative Examples 1-4: Snow melting and de-icing speed test: A 30mm thick ice layer was placed in a test chamber at a temperature of -30℃. An environmentally friendly snow melting and de-icing composition was sprayed onto the ice surface at a dosage of 30g / m². 2 The ice melting process was observed, and the time required for the ice to completely melt was recorded. Based on the formula: snow melting rate (mm / min) = ice thickness / time for complete ice melting, the snow melting rate of the environmentally friendly snow melting compositions prepared in each example and comparative example was calculated. The test results are shown in Table 1.

[0057] Table 1 As can be seen from Example 1 and Comparative Examples 1-4, and Table 1, compared with Example 1, the snow melting and ice-removing speed of Comparative Examples 1-4 in the frigid environment of -30℃ is significantly reduced. This indicates that the raw material ratio and preparation method of Example 1 can help improve the snow melting and ice-removing speed of the environmentally friendly snow melting and ice-removing composition in frigid environments.

[0058] This is likely because the specific ratio of calcium magnesium acetate, potassium acetate, and sodium formate creates a synergistic effect that lowers the freezing point. The dissolution of calcium magnesium acetate releases heat, as does the dissolution of sodium formate; this dual exothermic effect provides additional heat energy in low-temperature environments, accelerating snow and ice melting. Sodium alginate-chitosan composite wall material exhibits excellent pH responsiveness and ion exchange capacity, slowly releasing the core material in icy environments, extending its continuous effect to 4-6 hours. The 3:4:1 ratio of triisopropanolamine, sodium gluconate, and phytic acid forms a dense protective film on metal surfaces, reducing corrosion rates on carbon steel. Furthermore, the formula is chloride-free, biodegradable, and does not pollute soil, vegetation, or water, meeting environmental protection requirements.

[0059] As can be seen from Examples 1-16 and Table 1, the snow melting and de-icing rates of Examples 1-16 in a frigid environment of -30℃ are all greater than 1.3 mm / min. This indicates that using the raw material ratios and preparation methods within the range of Examples 1-16 can help improve the snow melting and de-icing rate of the environmentally friendly snow melting and de-icing composition in frigid environments.

[0060] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. An environmentally friendly snow-melting and ice-de-de-icing composition, characterized in that, The product includes organic acid salt slow-release microspheres; the organic acid salt slow-release microspheres include a core material and a shell layer encapsulating the core material. Based on the total weight of the organic acid salt slow-release microspheres, the core material comprises the following raw materials in parts by weight: 30-45 parts calcium magnesium acetate, 10-20 parts sodium formate, 15-25 parts potassium acetate, 8-15 parts urea, 1-3 parts surfactant, and 2-5 parts corrosion inhibitor; the shell layer comprises the following raw materials in parts by weight: 5-8 parts sodium alginate, 3-6 parts chitosan, 2-4 parts calcium chloride, 1-3 parts carboxymethyl cellulose, and 1-2 parts nano-silica.

2. The environmentally friendly snow-melting and ice-de-de-icing composition according to claim 1, characterized in that: The organic acid salt sustained-release microspheres were prepared according to the following steps: According to the formula, calcium magnesium acetate, sodium formate, potassium acetate and urea are mixed and added to deionized water. The mixture is stirred in a water bath at 60-80℃. Surfactants and corrosion inhibitors are added and stirred evenly to obtain a core material mixed solution. According to the formula, dissolve sodium alginate in deionized water, then add chitosan, calcium chloride, carboxymethyl cellulose and nano silica in sequence, mix well, and adjust the pH to 5.0-6.0 to obtain the wall material mixed solution; The core material mixture solution was added dropwise to the wall material mixture solution, and emulsified at 8000-12000 rpm for 5-10 minutes to obtain a water-in-water emulsion. After spray drying, organic acid salt sustained-release microspheres were obtained.

3. The environmentally friendly snow-melting and ice-de-de-icing composition according to claim 1, characterized in that: The surfactant comprises rhamnolipin and tea polyphenols in a weight ratio of 1:(0.8-1.2).

4. The environmentally friendly snow-melting and ice-de-de-icing composition according to claim 3, characterized in that: The corrosion inhibitor comprises triisopropanolamine, sodium gluconate, and phytic acid in a weight ratio of (2-4):(2-6):

1.

5. The environmentally friendly snow-melting and ice-de-de-icing composition according to claim 1, characterized in that: The environmentally friendly snow-melting and ice-de-de-icing composition also includes sodium dodecyl sulfate, wherein the weight ratio of sodium dodecyl sulfate to organic acid salt slow-release microspheres is (2-5):

100.

6. The environmentally friendly snow-melting and ice-de-de-icing composition according to claim 5, characterized in that: The environmentally friendly snow-melting and ice-de-de-icing composition also includes ethylene glycol monobutyl ether, wherein the weight ratio of ethylene glycol monobutyl ether to organic acid salt slow-release microspheres is (3-8):

100.

7. The environmentally friendly snow-melting and ice-de-de-icing composition according to claim 6, characterized in that: The environmentally friendly snow-melting and ice-de-de-icing composition also includes calcium peroxide, wherein the weight ratio of calcium peroxide to organic acid salt slow-release microspheres is (1-3):

100.

8. A method for preparing an environmentally friendly snow-melting and ice-de-de-icing composition as described in claim 7, characterized in that: Includes the following steps: Organic acid salt slow-release microspheres, sodium dodecyl sulfate, ethylene glycol monobutyl ether, and calcium peroxide are mixed evenly in a ratio of 100:(2-5):(3-8):(1-3) to obtain an environmentally friendly snow-melting and ice-de-de-icing composition.

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