Aerosol for preventing automobile tire from slipping on snowfield and preparation method of aerosol

Abstract

The invention discloses an aerosol for preventing automobile tires from slipping on a snowfield. The aerosol is obtained by canning a foamable adhesive and a propellant; the foamable adhesive is prepared from the following raw materials in parts by weight: 30-40 parts of polyester polyol, 15-20 parts of polyether polyol, 60-70 parts of isocyanate, 0.2-0.3 part of polyether silicone oil, 1-2 parts of a catalyst, 1-2 parts of argil, 1-2 parts of wollastonite powder, 0.8-1 part of an inorganic snow melting agent, 0.1-0.2 part of carbon black and a plurality of viscosity modifiers. Powder with a friction function, an inorganic snow-melting agent and a catalyst are dispersed in a polyurethane prepolymer to form a foamable adhesive, and the foamable adhesive is filled with a propellant to prepare the aerosol. When in use, the foamable adhesive forms a raised foam adhesive layer on the tire tread, and has good road holding force; meanwhile, the foam rubber layer absorbs water in time to damage a pavement water film and prevent the tire from slipping; and the added inorganic snow-melting agent can prevent the tire from slipping caused by ice and snow wrapping.

Description

Technical Field

[0001] This invention relates to the field of functional aerosol technology, specifically to an aerosol for preventing tire slippage on snow and its preparation method. Background Technology

[0002] When a car encounters thin snow, black ice, or frost on the road, the coefficient of friction decreases, and the adhesion between the tires and the ground also decreases, posing a significant threat to driving safety. In particular, on highway bridges where it is not easily noticeable, the high humidity in winter can cause sudden freezing when temperatures drop, leading to tire slippage and skidding, and increasing the difficulty of vehicle control for the driver.

[0003] Currently, for severely snow-covered and icy roads, the main method is to increase friction between the tires and the road surface by installing snow chains and anti-skid strips. However, installing snow chains and anti-skid strips can easily damage the tires and the road surface, and they are not easy to carry or install, making them primarily suitable for heavily snow-covered and icy roads. For thin snow, black ice, and frost-covered roads caused by sudden temperature drops and snowfall, drivers currently mainly avoid the risk of skidding by using snow tires, reducing speed, and driving cautiously.

[0004] However, snow tires primarily rely on their unique tread pattern to provide traction. Once ice and snow adhere to and cover the tires, filling the tread, the grip decreases dramatically. Additionally, as road surface temperatures drop in winter, the tire rubber hardens, further reducing grip. Even at low speeds, it becomes difficult to completely avoid the risk of skidding.

[0005] In view of the above background, the present invention proposes an aerosol agent for snow anti-skid, which forms a foamed raised ground layer by spraying directly onto the tire tread, thereby increasing the tire tread grip and avoiding the problem of reduced friction coefficient caused by the hardening of the tire surface in low-temperature weather. Summary of the Invention

[0006] The reduced friction of vehicles on thin snow, black ice, and frost-covered roads is mainly due to factors such as the decreased coefficient of friction of the snow and ice, the tire hardening at low temperatures, the adhesion of snow and ice to the tire tread grooves reducing grip, and the water film between the tire and the ground reducing adhesion and causing slippage. To address this issue and improve vehicle safety on thin snow, black ice, and frost-covered roads, and to prevent tire slippage, this invention proposes an aerosol for preventing tire slippage on snow-covered surfaces. The aerosol is sprayed onto the tire tread where it contacts the ground, adheres to the tread, and foams to form raised points that provide grip, increasing friction between the tire and the snow and preventing tire slippage.

[0007] The specific technical solution adopted by the present invention to achieve the above-mentioned technical effects is as follows: An aerosol for preventing snow traction on automobile tires, characterized in that the aerosol is obtained by packaging a foamable adhesive and a propellant in a mass ratio of 100:(30-35); The foamable adhesive comprises, by weight, the following raw materials: 30-40 parts polyester polyol, 15-20 parts polyether polyol, 60-70 parts isocyanate, 0.2-0.3 parts polyether silicone oil, 1-2 parts catalyst, 1-2 parts kaolin, 1-2 parts wollastonite powder, 0.8-1 parts inorganic de-icing agent, 0.1-0.2 parts carbon black, and a certain amount of viscosity modifier; the catalyst is bismorpholino diethyl ether; the viscosity modifier is dioctyl phthalate, used to adjust the viscosity to between 800 and 1200 mPa·s during canning. The propellant is dimethyl ether and / or propane.

[0008] Preferably, the polyester polyol is polyethylene adipate-1,4-butanediol diol or / and phthalic anhydride polyester polyol.

[0009] Preferably, the polyether polyol is at least one of polypropylene triol, polypropylene diol, and polytetrahydrofuran diol.

[0010] Preferably, the isocyanate is at least one of toluene diisocyanate (TDI), 4,4'-diphenylmethane diisocyanate (MDI), polymethylene polyphenyl polyisocyanate (PAPI), and isophorone diisocyanate (IPDI).

[0011] Preferably, the isocyanate is 4,4'-diphenylmethane diisocyanate (MDI). Through the introduction of the soft and hard segments of polyether polyols and polyester polyols, the aerosol foam exhibits both softness and hardness in the tire tread. Good hardness increases the tread's grip, while a certain degree of flexibility and porosity allows for timely water absorption and disruption of the water film, preventing slippage.

[0012] Preferably, the polyether silicone oil is selected from either Dow Corning's SF-8427 polyether silicone oil or Jiangxi Haiduo Organosilicon Materials Co., Ltd.'s H-57 polyether silicone oil. Polyether silicone oil is a block copolymer formed by chemical bonding between a polysiloxane main chain and polyether side chains. It possesses certain surface activity and anti-stick properties, promoting the overall film formation and adhesion of the aerosol foam layer. After anti-skid application, the foamed, raised layer can be completely peeled off under normal road surface friction, without contaminating the tire tread and keeping the tread intact. Strict control of the dosage is necessary during use; excessive use will affect the adhesion of the foam layer.

[0013] The catalyst bismorpholino diethyl ether (DMDEE) inhibits the cross-linking reaction of -NCO and -OH groups in the aerosol can, maintaining the long-term stability and storage of the liquid state. When the aerosol is sprayed, it comes into contact with moisture in the air or tire tread, triggering a foaming reaction. The catalyst's role shifts from delaying the reaction to accelerating it, promoting the rapid expansion, cross-linking, curing, and bonding of the polyurethane prepolymer. Preferably, the silica content of the clay is greater than 65 wt%. The clay is an aluminosilicate mineral, primarily composed of silica (SiO2), aluminum oxide (Al2O3), and ferric oxide (Fe2O3). When used in combination with wollastonite, after aerosol spraying, the clay and wollastonite in the foam adhesive layer formed on the tire tread can significantly increase the friction of the foam adhesive layer.

[0014] Preferably, the inorganic de-icing agent is selected from industrial-grade sodium chloride and / or magnesium chloride. The inorganic de-icing agent is dispersed in the aerosol. After the aerosol is sprayed, the inorganic de-icing agent is dispersed in the foam adhesive layer formed on the tire tread. When ice and snow adhere to the tire tread, the inorganic de-icing agent promotes the melting of ice and snow, preventing ice and snow from enveloping the tire. The amount added should not be excessive; excessive addition will cause continuous melting and dissolution of snow on the ground, affecting the bonding strength of the foam adhesive layer.

[0015] Preferably, the propellant is dimethyl ether and propane-butane in a 1:1 mass ratio. By controlling the amount of propellant, the foam adhesive bonded to the tire tread has good hardness, flexibility, and a certain amount of porosity. Too much propellant results in too low a foam density after bonding, affecting the strength and grip of the bonded tire tread; too little propellant results in fewer foam voids, which cannot effectively absorb water and break down the water film.

[0016] This invention also provides a method for preparing an aerosol for preventing snow traction on automobile tires, the specific preparation method being as follows: S1. Mix polyester polyol, polyether polyol and polyether silicone oil evenly, dehydrate under vacuum at 100-110℃, and transfer to No. 1 sealed container; S2. The material in the No. 1 sealed container is transported to the reactor through a closed pipeline, and then isocyanate is added. The reactor is reacted at 60-65℃ under nitrogen protection for 1-2 hours. The mixture is then transferred to the No. 2 sealed container to cool down, and polyurethane prepolymer is obtained. S3. Grind the clay, wollastonite powder, inorganic de-icing agent, and carbon black in a dry mill until the D90 particle size is less than 10µm, dry them, and transfer them to a sealed container No. 3. S4. Add the polyurethane prepolymer from sealed container #2, the material from sealed container #3, and the catalyst to sealed container #4. Stir evenly at room temperature, add a viscosity modifier to adjust the viscosity to 800-1200 mPa·s, and obtain a foamable adhesive. Then, use tin cans for metering, filling, and sealing, fill with propellant, and press the threaded cap to obtain an aerosol for snow-resistant anti-skid of automobile tires.

[0017] Preferably, in step S1, the polyester polyol, polyether polyol, and polyether silicone oil are vacuum dehydrated until the water content is less than 0.05%.

[0018] Preferably, in step S3, the product is dried until the moisture content is less than 0.05%.

[0019] This invention involves prepolymerizing polyurethane with polyol and isocyanate to form a polyurethane prepolymer, dispersing the polyurethane prepolymer with clay (with friction function), wollastonite powder, inorganic snow-melting agent (with snow-melting function), and catalyst (with catalytic function), adjusting the viscosity to form a foamable adhesive, and filling it with propellant to prepare an aerosol.

[0020] The aforementioned aerosol agent is used for snow-resistant anti-skid applications on automobile tires. During use, the foam adhesive is sprayed from the aerosol can, reacting with moisture in the air and on the tire tread to form a raised foam layer. When sprayed in any shape such as "•", "≡", "Z", or "S" on the tire tread, it forms a raised foam layer with a thickness of approximately 1-2 cm, increasing the friction and grip between the tire and the ground, effectively preventing slippage on wet snow. By rationally controlling the types and proportions of isocyanate, polyester polyol, and polyether polyol, the foamed raised foam layer achieves an optimal hardness. Optimal, it exhibits a Shore hardness of 46-50 HA at low temperatures in snowy conditions. While providing good grip, its flexibility and gaps allow it to absorb water in time to break the water film on the road surface and prevent tire slippage. The added inorganic de-icing agent melts the snow and ice in time when they adhere to and coat the tire tread, preventing snow and ice from covering the tire tread and causing slippage.

[0021] The beneficial effects of this invention are: 1) This invention proposes an innovative technology for using aerosols for tire snow-resistant anti-skid applications. This technology involves adding friction-functional clay and wollastonite powder to a polyurethane prepolymer, along with an inorganic snow-melting agent. Compared to adding snow chains or anti-skid strips to tires, this tire snow-resistant aerosol is more convenient to use and does not damage the tires. After application, the foamed, raised foam layer can be completely peeled off under strong friction on normal road surfaces, without contaminating the tire tread and keeping it intact.

[0022] 2) When the aerosol of the present invention is used, it is sprayed on the tire tread in any shape such as "•", "≡", "Z", "S", etc. The polyurethane prepolymer of the foam adhesive comes into contact with the moisture in the air and the moisture in the tire tread and undergoes a curing reaction to bond to the tire tread to form a raised foam adhesive layer, which can greatly increase the tire's grip.

[0023] 3) The aerosol of the present invention forms a raised foam layer on the tire tread, which has a certain degree of flexibility and porosity to absorb water in time, thereby destroying the water film on the road surface and preventing the tire from slipping.

[0024] 4) The inorganic de-icing agent added to the aerosol of this invention disperses in the raised foam layer formed on the tire tread. When ice and snow adhere to and coat the tire tread, the de-icing agent melts the snow in time, preventing the tire from slipping due to ice and snow covering it. Detailed Implementation

[0025] To enable those skilled in the art to further understand the technical means, technical objectives and technical effects of the present invention, the present invention will be described in detail below with reference to the embodiments; the entire production line of the present invention is designed to prevent the intrusion of water vapor, including the sealed tanks, conveying pipelines, reaction kettles and filling lines, all of which operate in a closed state.

[0026] In the following embodiments, unless otherwise specified, all raw materials are commercially available products.

[0027] Some raw material specifications used in embodiments of the present invention: Polyethylene adipate-1,4-butanediol diol: Mn is 1000, hydroxyl value is 107-117 mgKOH / g.

[0028] Phthalic anhydride polyester polyol: Model PE-D503, transparent liquid, hydroxyl value 400~450 mgKOH / g, viscosity at 25℃ 7000~10000mPa·s, Shandong Yinuowei Polyurethane Co., Ltd.

[0029] Polypropylene triol: polyether 310, hydroxyl value 148~188mgKOH / g, Hangzhou Electrochemical Group Additives and Chemicals Co., Ltd.

[0030] Polypropylene glycol: Polyether 210, hydroxyl value 105~119mgKOH / g, Hangzhou Electrochemical Group Additives and Chemicals Co., Ltd.

[0031] Polyether silicone oil: SF-8427, Dow Corning.

[0032] Polyether silicone oil: H-57, Jiangxi Haiduo Organosilicon Materials Co., Ltd.

[0033] Clay: Silicon dioxide content greater than 65 wt%, produced in Lishui, Zhejiang.

[0034] Wollastonite: Acicular wollastonite, 600 mesh.

[0035] Example 1 S1. Mix 35 parts of polyethylene adipate-1,4-butanediol diol, 15 parts of polyether 310, and 0.2 parts of polyether silicone oil SF-8427 evenly according to the weight, dehydrate under vacuum at 110°C until the water content is less than 0.05%, and transfer to No. 1 sealed container. S2. The material in the No. 1 sealed container is transported to the reactor through a closed pipeline, and then 60 parts of MDI are added. The reactor is reacted at 65°C under nitrogen protection for 2 hours. The mixture is then transferred to the No. 2 sealed container to cool down, and polyurethane prepolymer is obtained. S3. Grind 2 parts of clay, 1 part of wollastonite powder, 1 part of industrial sodium chloride, and 0.1 parts of carbon black in a dry vortex airflow refiner until the D90 particle size is less than 10µm, dry until the moisture content is less than 0.05%, and transfer to No. 3 sealed container. S4. Add the polyurethane prepolymer from sealed container #2, the material from sealed container #3, and 1.5 parts of catalyst bismorpholino diethyl ether to sealed container #4. Stir evenly at room temperature, add dioctyl phthalate as a viscosity modifier, and adjust the viscosity to 1000 mPa·s to obtain a foamable adhesive. Then, use tin cans for metering, filling, and sealing, and fill with propellant. The foamable adhesive is filled with dimethyl ether and propane in a mass ratio of 100:15:15, and the screw cap is pressed to obtain an aerosol for snow anti-skid of automobile tires.

[0036] Example 2 S1. Mix 40 parts by weight of phthalic anhydride polyester polyol PE-D503, 20 parts by weight of polyether 210 and 0.2 parts by weight of polyether silicone oil SF-8427 evenly, dehydrate under vacuum at 110°C until the water content is less than 0.05%, and transfer to No. 1 sealed container. S2. The material in the No. 1 sealed container is transported to the reactor through a closed pipeline, and then 70 parts of PAPI are added. The reactor is reacted at 60°C under nitrogen protection for 1.5 hours. The mixture is then transferred to the No. 2 sealed container to cool down, and polyurethane prepolymer is obtained. S3. Grind 2 parts of clay, 2 parts of wollastonite powder, 1 part of industrial sodium chloride, and 0.2 parts of carbon black in a dry vortex airflow refiner until the D90 particle size is less than 10µm, dry it until the moisture content is less than 0.05%, and transfer it to a sealed container No. 3. S4. Add the polyurethane prepolymer from sealed container #2, the material from sealed container #3, and 2 parts of catalyst bismorpholino diethyl ether to sealed container #4. Stir evenly at room temperature, add dioctyl phthalate as a viscosity modifier, and adjust the viscosity to 1100 mPa·s to obtain a foamable adhesive. Then, use tin cans for metering, filling, and sealing, and fill with propellant. The foamable adhesive is filled with dimethyl ether and propane in a mass ratio of 100:15:15, and the screw cap is pressed to obtain an aerosol for snow-resistant anti-skid of automobile tires.

[0037] Example 3 S1. Mix 40 parts by weight of phthalic anhydride polyester polyol PE-D503, 10 parts of polyether 310, 5 parts of polyether 210, and 0.3 parts of polyether silicone oil H-57 evenly, and dehydrate under vacuum at 110°C until the water content is less than 0.05%, then transfer to No. 1 sealed container. S2. The material in the No. 1 sealed container is transported to the reactor through a closed pipeline. Then, 30 parts of TDI and 30 parts of PAPI are added. The reactor is reacted at 65°C under nitrogen protection for 2 hours. The mixture is then transferred to the No. 2 sealed container to cool down, and polyurethane prepolymer is obtained. S3. Grind 1 part clay, 2 parts wollastonite powder, 0.5 parts industrial sodium chloride, 0.5 parts industrial magnesium chloride, and 0.2 parts carbon black in a dry vortex airflow refiner until the D90 particle size is less than 10µm, dry it until the moisture content is less than 0.05%, and transfer it to a sealed container No. 3. S4. Add the polyurethane prepolymer from sealed container #2, the material from sealed container #3, and 2 parts of catalyst bismorpholino diethyl ether to sealed container #4. Stir evenly at room temperature, add dioctyl phthalate as a viscosity modifier, and adjust the viscosity to 1000 mPa·s to obtain a foamable adhesive. Then, use tin cans for metering, sealing, and filling with propellant. The foamable adhesive is filled with dimethyl ether and propane in a mass ratio of 100:20:15, and the screw cap is pressed to obtain an aerosol for snow-resistant anti-skid of automobile tires.

[0038] Comparative Example 1 When implementing according to Example 1, the use of polyether silicone oil SF-8427 is omitted.

[0039] The aerosols of Example 1 and Comparative Example 1 were sprayed onto the tire tread. After 3 hours, a forced tensile force was applied in the direction perpendicular to the bonding surface for peeling until the foam adhesive was completely broken. The degree of peeling integrity was then evaluated. The aerosol foam adhesive layer of Example 1 could be peeled off entirely from the tire tread without contaminating it. The aerosol of Comparative Example 1, because it did not use polyether silicone oil SF-8427, had poor overall detachment after being sprayed and bonded to the tire tread, and was prone to leaving residue on the tread during peeling, causing contamination.

[0040] Comparative Example 2 When implementing according to Example 1, the inorganic de-icing agent is omitted.

[0041] The aerosols of Example 1 and Comparative Example 2 were sprayed onto the tread of sampled tires to form a foam adhesive layer. After 3 hours, the foam adhesive layer was adhered to ice blocks under a fixed pressure to ensure a tight bond. The adhesion between the foam adhesive layer and the ice blocks was observed after 10 minutes. In Example 1, due to the addition of a de-icing agent, the foam adhesive layer did not adhere to the ice blocks, and the ice layer at the contact surface melted; while in Comparative Example 2, the foam adhesive layer adhered to the ice blocks.

[0042] Comparative Example 3 When implementing according to Example 1, clay and wollastonite are omitted.

[0043] The aerosols from Example 1 and Comparative Example 3 were sprayed in a "≡" shape onto the tread of ordinary passenger car tires, forming a foamed adhesive layer with a protrusion thickness of approximately 2 cm. After complete curing, the protrusion thickness was approximately 1 cm after wheel rolling. When the car was traveling at 40 km / h on a snow-covered road, the braking distances with ABS assistance, ensuring no sideslip or skidding, are shown in Table 1. The control experiment did not involve spraying the aerosol onto the tires.

[0044] Table 1 Comparison of Braking Distances Table 1 shows that using an aerosol to form a raised "≡"-shaped foam layer on the tire tread significantly increases friction and grip on snow, resulting in a significantly shorter braking distance compared to the control test without aerosol. However, in Comparative Example 3, because no clay or wollastonite was used in the foam layer, the frictional properties of the foam layer itself decreased after being sprayed onto the tire tread, and the braking distance reduction did not reach its optimal level.

[0045] Comparative Example 4 When implemented according to Example 1, during propellant filling, the foam adhesive is filled with dimethyl ether and propane in a mass ratio of 100:10:10. After being sprayed onto the tire tread for bonding, the foam adhesive has a higher density, higher hardness, and slightly higher bonding strength, but the voids are reduced, it has no water absorption function, and it cannot effectively cope with slippage caused by water film.

[0046] Comparative Example 5 When implemented according to Example 1, during propellant filling, the foamable adhesive is filled with dimethyl ether and propane in a mass ratio of 100:20:25. After being sprayed onto the tire tread for bonding, the density of the foam adhesive decreases, it becomes more easily compressed, the grip weakens, and the bonding strength decreases.

[0047] 1) Adhesion between the aerosol and the tire tread: The aerosols from Examples 1-3 and Comparative Examples 1-5 were used to simulate bonding of tire treads. Referring to GB / T 7124-2008 (Determination of Tensile Shear Strength of Adhesives), the aerosols were sprayed onto sampled tire treads, allowing the treads to overlap and bond. After curing for 120 minutes, a tensile force was applied in the parallel direction of the bonded surface to measure the tensile shear strength at the bond (initial tensile shear strength). The bonded tread components were then immersed in water for 72 hours, and the tensile shear strength after immersion was tested (post-immersion tensile shear strength). This was used to evaluate the bonding effect between the friction layer formed by the aerosol and the tire, and to measure the adhesion and service durability of the friction layer formed by the aerosol after contact with water. The test performance is shown in Table 2.

[0048] Table 2. Test of adhesion between aerosol and tire tread Through testing, the aerosol spray of the present invention exhibits good adhesion to the tire tread and maintains good adhesion even after immersion in water. This significantly ensures that the aerosol film layer does not easily detach when the vehicle is driving in snowy or wet conditions, thus extending its service life. Comparative Example 2, which did not contain a de-icing agent, showed no loss of adhesion strength upon immersion in water. Comparative Example 4, lacking sufficient porosity, showed reduced water absorption upon immersion, resulting in minimal loss of adhesion strength.

[0049] 2) Shore hardness test: Generally, the hardness of tire tread increases to over 80HA at low temperatures, affecting its grip on snow. An aerosol was sprayed onto sampled tire treads, and after 3 hours, a -10℃ low-temperature treatment was performed. The Shore A hardness of the foam adhesive layer was then tested using a Shore hardness tester (using a conical needle). The hardness results are shown in Table 3.

[0050] Table 3 Shore Hardness As shown in Table 3, the aerosol of the present invention forms a foam adhesive layer with a hardness of 46-50 HA at low temperatures, combining hardness and flexibility. Compared with the tire tread, the low-temperature hardness increases to 80 HA. The foam adhesive layer formed by the aerosol of the present invention not only ensures the hardness and grip effect, but also has a certain degree of flexibility and porosity. It absorbs water and destroys the water film, preventing the water film from slipping.

[0051] The present invention has been further described in detail above with reference to specific embodiments. However, it should not be considered that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, substitutions and improvements can be made without departing from the concept of the present invention, and all such substitutions and improvements should be considered to fall within the scope of protection defined by the claims submitted by the present invention.

Claims

1. An aerosol for preventing tire slippage on snow, characterized in that, The aerosol is obtained by filling the foamable adhesive glue and the propellant in a mass ratio of 100:(30-35); The raw materials of the foamable adhesive glue by weight parts include: polyester polyol 30-40 parts, polyether polyol 15-20 parts, isocyanate 60-70 parts, polyether silicone oil 0.2-0.3 parts, catalyst 1-2 parts, clay 1-2 parts, wollastonite powder 1-2 parts, inorganic snow melting agent 0.8-1 part, carbon black 0.1-0.2 parts, viscosity regulator; the catalyst is dimorpholinyl diethyl ether; the viscosity regulator is dioctyl phthalate, and the viscosity during filling is between 800-1200 mPa·s; The propellant is dimethyl ether and / or propyl butane.

2. The aerosol for preventing the automobile tire from slipping on the snow according to claim 1, wherein The polyester polyol is polyethylene glycol-1,4-butanediol ester diol or / and phthalic anhydride polyester polyol.

3. The aerosol for preventing the automobile tire from slipping on the snow according to claim 1, wherein The polyether polyol is at least one of polyoxypropylene triol, polyoxypropylene diol, and polytetrahydrofuran diol.

4. The aerosol for preventing the automobile tire from slipping on the snow according to claim 1, wherein The isocyanate is at least one of toluene diisocyanate, 4,4'-diphenyl methane diisocyanate, polymethylene polyphenyl polyisocyanate, and isophorone diisocyanate.

5. The aerosol for preventing the automobile tire from slipping on the snow according to claim 1, wherein The isocyanate is selected from 4,4'-diphenyl methane diisocyanate.

6. The aerosol for preventing the automobile tire from slipping on the snow according to claim 1, wherein The inorganic snow melting agent is selected from industrial salt sodium chloride or / and magnesium chloride.

7. The aerosol for preventing the automobile tire from slipping on the snow according to claim 1, wherein The propellant is dimethyl ether and propyl butane filled in a mass ratio of 1:

1.

8. A preparation method of the aerosol for snow tire slip prevention of an automobile according to any one of claims 1-7, specifically comprising the following steps: S1. Mix the polyester polyol, polyether polyol, and polyether silicone oil uniformly, vacuum dehydrate at 100-110°C, and transfer to a 1# sealed tank; S2. Transfer the material in the 1# sealed tank to a reaction kettle through a closed pipeline, then add isocyanate, react in the reaction kettle at 60-65°C under nitrogen protection for 1-2h, transfer to a 2# sealed tank for cooling, and obtain a polyurethane prepolymer; S3. Grind the clay, wollastonite powder, inorganic snow melting agent, and carbon black in a dry refining machine to a D90 particle size of less than 10µm, dry, and transfer to a 3# sealed tank; S4. Add the polyurethane prepolymer in the 2# sealed tank, the material in the 3# sealed tank, and the catalyst to a 4# sealed tank, stir uniformly at room temperature, add a viscosity regulator to adjust the viscosity to 800-1200mPa·s, obtain the foamable adhesive glue, then use a tin can to measure, fill, and seal, fill the propellant, press the screw cap, and obtain the aerosol for snow tire slip prevention of an automobile.

9. The method for preparing an aerosol for snow-resistant automotive tires according to claim 7, characterized in that, In step S1, the polyester polyol, polyether polyol, and polyether silicone oil are vacuum dehydrated to a water content of less than 0.05%; in step S3, the drying is performed to a water content of less than 0.05%.

10. The aerosol according to any one of claims 1-7 for the application of snow tire slip prevention of an automobile.

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