Method for preparing a surface layer of ice for an ice track and ice track

Abstract

The application provides a preparation method of a rink race track surface ice and a rink race track. The preparation method of the rink race track surface ice comprises the following steps: pouring ice-making solution containing 1.25 mmol / L-1 mol / L cations to an ice surface, and controlling the temperature of the ice surface to be-4 DEG C to-20 DEG C to make the ice-making solution freeze to form the rink race track surface ice; wherein the cations comprise one or more of cesium ions, lithium ions and magnesium ions. The method has the advantages of low cost, simple operation, small reagent consumption and large effective concentration span, and can solve the problems of high ice surface friction coefficient, unstable ice surface friction coefficient and ice surface cracking when climbing the ice, and is beneficial to making the ice surface more stable, smooth and safe.

Description

Technical Field

[0001] This application relates to the field of ice and snow sports, and in particular to a method for preparing the surface ice of an ice rink track and an ice rink track. Background Technology

[0002] Ice rinks are common venues for winter sports such as speed hockey and ice equestrian. With the promotion and popularization of winter sports, both the general public and professional athletes have increasingly higher requirements for ice surfaces. The surface ice, which comes into contact with athletes and equipment, has a significant impact on the athletes' experience and performance. During the ice-making process, the surface ice is created by spraying ice water around the rink using ice sleds.

[0003] In actual ice surface construction, problems such as high coefficient of friction and cracking during skating are frequently encountered. These issues affect both the aesthetics of the ice surface and the stability of athletes during training, and can even become potential hazards in some high-speed competitive sports.

[0004] Therefore, reducing the coefficient of friction of the ice surface and improving the strength of the ice surface are urgent problems that need to be solved. Summary of the Invention

[0005] Based on this, this application provides a method for preparing the surface ice of an ice rink track and an ice rink track that can effectively reduce the coefficient of friction of the ice surface and improve the strength of the ice surface.

[0006] The first aspect of this application provides a method for preparing the surface ice of an ice rink track, comprising the following steps:

[0007] An ice-making solution containing 1.25 mmol / L to 1 mol / L of cations is poured onto the ice surface, and the temperature of the ice surface is controlled at -4℃ to -20℃ so that the ice-making solution freezes to form the surface ice of the ice rink track.

[0008] The cations include one or more of cesium ions, lithium ions, and magnesium ions.

[0009] In some embodiments, the material of the friction pair that forms a frictional contact with the ice surface is selected from ceramic materials.

[0010] In some embodiments, the material forming the friction pair with the ice surface includes one of silicon nitride and A-axis sapphire.

[0011] In some embodiments, the cation contained in the ice-making solution is cesium ion, and the concentration of cesium ion is 1.25 mmol / L-5 mmol / L.

[0012] In some embodiments, the cation contained in the ice-making solution is lithium ion, and the concentration of the lithium ion is 2.5 mmol / L-10 mmol / L.

[0013] In some embodiments, the cation contained in the ice-making solution is magnesium ion, and the concentration of magnesium ion is 2.5 mmol / L-10 mmol / L.

[0014] In some embodiments, the temperature of the ice surface is controlled to be -6°C to -10°C so that the ice-making solution freezes to form the surface ice of the ice rink track.

[0015] In some embodiments, the ice-making solution further contains anions, including acetate ions.

[0016] In some embodiments, the solvent contained in the ice-making solution is selected from water.

[0017] The second aspect of this application provides an ice rink track, which is prepared using the preparation method of the first aspect of this application.

[0018] The aforementioned method for preparing the surface ice of an ice rink track significantly increases the content of free water molecules in the negatively charged surface that rubs against the ice during friction and in the lubrication layer between the ice surfaces by adding cations. This reduces intermolecular forces, enhances the fluidity of the lubrication layer, and macroscopically lowers the coefficient of friction of the ice surface. Furthermore, ice cracking is essentially caused by the breakdown of hydrogen bonds between water molecules under high pressure. By adding cations, cations and water molecules form hydrated cations with higher charge density. This strong hydration results in a highly robust hydrated layer formed by water molecules and the cation base. The force on the water molecules changes from weak hydrogen bonds to stronger electrostatic forces, thus giving the ice with added cations a stronger anti-cracking ability. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application and to more completely understand this application and its beneficial effects, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 The friction coefficient test results are for Examples 15-17 and Comparative Example 1;

[0021] Figure 2 The results are the friction coefficient test results for Examples 17-21. Detailed Implementation

[0022] To facilitate understanding of the present invention, a more complete description of this application will be provided below with reference to relevant embodiments. Preferred embodiments of the present application are given below. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that a thorough and complete understanding of the disclosure of this application will be achieved.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0024] As used herein, the terms "and / or," "or / and," and "and / or" encompass any one of two or more of the related listed items, as well as any and all combinations of the related listed items. These arbitrary and all combinations include any two related listed items, any more related listed items, or a combination of all related listed items. It should be noted that when at least three items are connected using at least two conjunctions selected from "and / or," "or / and," and "and / or," it should be understood that, in this application, the technical solution undoubtedly includes solutions connected by "logical AND," and also undoubtedly includes solutions connected by "logical OR."

[0025] In this application, the technical features described in an open-ended manner include both closed technical solutions consisting of the listed features and open technical solutions that include the listed features.

[0026] In this application, numerical ranges are referred to as continuous unless otherwise specified, and include the minimum and maximum values ​​of the range, as well as every value between the minimum and maximum values. Furthermore, when the range refers to integers, it includes every integer between the minimum and maximum values ​​of the range. Additionally, when multiple ranges are provided to describe a feature or characteristic, the ranges may be merged. In other words, unless otherwise specified, all ranges disclosed herein should be understood to include any and all subranges to which they are incorporated.

[0027] This document only specifically discloses some numerical ranges. However, any lower limit can be combined with any upper limit to form an unspecified range; and any lower limit can be combined with other lower limits to form an unspecified range, just as any upper limit can be combined with any other upper limit to form an unspecified range. Furthermore, each individually disclosed point or single value can itself serve as a lower or upper limit and be combined with any other point or single value or with other lower or upper limits to form an unspecified range.

[0028] Unless otherwise specified, the temperature parameters in this application may be either constant temperature processing or processing within a certain temperature range. The constant temperature processing allows temperature fluctuations within the precision range controlled by the instrument, such as ±5°C, ±4°C, ±3°C, ±2°C, or ±1°C.

[0029] In this document, the term "suitable" as used in phrases such as "suitable combination," "suitable method," and "any suitable method" refers to the ability to implement the technical solution of this application, solve the technical problem of this application, and achieve the expected technical effect of this application.

[0030] In this application, terms such as "further," "even further," and "particularly" are used to describe purposes and indicate differences in content, but should not be construed as limiting the scope of protection of this application.

[0031] In this application, "optionally," "optionally," and "optional" mean that something is optional, that is, it means that it is selected from either "with" or "without." If there are multiple "optional" entries in a technical solution, unless otherwise specified, and there are no contradictions or mutual constraints, each "optional" entry shall be independent.

[0032] In the description of the application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0033] Unless otherwise specified, all embodiments and optional embodiments of this application can be combined to form new technical solutions. Unless otherwise specified, all technical features and optional technical features of this application can be combined to form new technical solutions.

[0034] Unless otherwise specified, all steps of this application may be performed sequentially or randomly, but sequentially is preferred.

[0035] In actual ice surface construction, high coefficients of friction and cracking during skating are common problems. This affects both the aesthetics of the ice surface and the stability of athletes during training, and can even become a potential hazard in some high-speed competitive sports. Current research primarily focuses on the friction between positively charged metal surfaces and ice, with limited research and design work on the friction between other materials, such as wear-resistant ceramics, and ice.

[0036] Based on the above problems, this application studies the friction between the negatively charged material surface and the ice surface. By using an ice-making solution containing a certain concentration of cations to form the surface of the ice track, the friction coefficient of the ice surface is reduced and the strength of the ice surface is improved.

[0037] The first aspect of this application provides a method for preparing the surface ice of an ice rink track, comprising the following steps: pouring an ice-making solution containing 1.25 mmol / L to 1 mol / L of cations onto an ice surface, and controlling the temperature of the ice surface to be -4℃ to -20℃ so that the ice-making solution freezes to form the surface ice of the ice rink track; wherein the cations include one or more of cesium ions, lithium ions, and magnesium ions.

[0038] As an example, the solubility of cations in the ice-making solution can be, but is not limited to, 1.25 mmol / L, 5 mmol / L, 10 mmol / L, 50 mmol / L, 100 mmol / L, 150 mmol / L, 200 mmol / L, 150 mmol / L, 200 mmol / L, 200 mmol / L, 250 mmol / L, 300 mmol / L, 350 mmol / L, 400 mmol / L, 450 mmol / L, 500 mmol / L, 550 mmol / L, 600 mmol / L, 650 mmol / L, 700 mmol / L, 750 mmol / L, 800 mmol / L, 850 mmol / L, 900 mmol / L, 950 mmol / L, 1000 mmol / L, or any range between two of the above concentrations. When the concentration of cations in the ice-making solution is within the above range, it not only helps to achieve a good friction-reducing effect, but also facilitates the rapid dispersion of reagents in the ice-making solution after it is poured onto the ice surface.

[0039] The temperature of the ice surface can be controlled, but is not limited to, -4℃, -5℃, -6℃, -7℃, -8℃, -9℃, -10℃, -11℃, -12℃, -13℃, -14℃, -15℃, -16℃, -17℃, -18℃, -19℃, -20℃, or any two of the above temperatures. When the ice surface temperature is higher than -4℃, the resulting track surface softens, making it difficult to skate and use normally. When the ice surface temperature is lower than -20℃, the resulting track surface has a relatively high coefficient of friction, and athletes are prone to discomfort due to the low temperature. Controlling the ice surface temperature between -4℃ and -20℃ is beneficial for the effectiveness of the resulting track surface under common temperature conditions, and also provides effectiveness over a wide temperature range, remaining effective even under extreme conditions where the temperature deviates from the common temperature.

[0040] Understandably, the method for preparing the surface ice of an ice rink provided in this application can significantly increase the content of free water molecules in the negatively charged surface that rubs against the ice during friction and in the lubrication layer between the ice surfaces by adding cations. This reduces intermolecular forces, enhances the fluidity of the lubrication layer, and macroscopically reduces the coefficient of friction of the ice surface. Furthermore, ice cracking is essentially caused by the breakdown of hydrogen bonds between water molecules under high pressure. By adding cations, cations and water molecules form hydrated cations with a higher charge density. This strong hydration results in a highly robust hydrated layer formed by water molecules and the cation base. The force on the water molecules changes from weak hydrogen bonds to stronger electrostatic forces, thus giving the ice with added cations a stronger anti-cracking ability.

[0041] This preparation method has the advantages of low cost, simple operation, small amount of reagents, and large effective concentration range. It has been tested and verified on professional-grade ice rinks and can solve common problems such as high coefficient of friction, unstable coefficient of friction, and ice cracking when skating. It is beneficial to make the ice surface more stable, smooth and safe.

[0042] In some implementations, the material of the friction pair that forms a frictional contact with the ice surface is selected from ceramic materials.

[0043] In some alternative implementations, the material forming the friction pair with the ice surface includes one of silicon nitride and A-axis sapphire.

[0044] As one possible implementation, the cation contained in the ice-making solution is cesium ion, and the concentration of cesium ion is 1.25 mmol / L-5 mmol / L; for example, it can be, but is not limited to, 1.25 mmol / L, 1.5 mmol / L, 2 mmol / L, 2.5 mmol / L, 3 mmol / L, 3.5 mmol / L, 4 mmol / L, 4.5 mmol / L, 5 mmol / L, or any range between two of the above concentrations. When the concentration of cesium ions in the ice-making solution is within the above range, compared with using pure water to make ice, the coefficient of friction can be reduced by at least 40%.

[0045] In some optional embodiments, the cation in the ice-making solution is lithium ion, and the concentration of lithium ion is 2.5 mmol / L-10 mmol / L; for example, it can be, but is not limited to, 2.5 mmol / L, 3 mmol / L, 3.5 mmol / L, 4 mmol / L, 4.5 mmol / L, 5 mmol / L, 5.5 mmol / L, 6 mmol / L, 6.5 mmol / L, 7 mmol / L, 7.5 mmol / L, 8 mmol / L, 8.5 mmol / L, 9 mmol / L, 9.5 mmol / L, 10 mmol / L, or any range between two of the above concentrations. When the concentration of lithium ion in the ice-making solution is within the above range, compared with using pure water to make ice, the coefficient of friction can be reduced by at least 40%.

[0046] In some exemplary embodiments, the cation contained in the ice-making solution is magnesium ion, and the concentration of magnesium ion is 2.5 mmol / L-10 mmol / L; for example, but not limited to 2.5 mmol / L, 3 mmol / L, 3.5 mmol / L, 4 mmol / L, 4.5 mmol / L, 5 mmol / L, 5.5 mmol / L, 6 mmol / L, 6.5 mmol / L, 7 mmol / L, 7.5 mmol / L, 8 mmol / L, 8.5 mmol / L, 9 mmol / L, 9.5 mmol / L, 10 mmol / L, or any range between two of the above concentrations. When the concentration of magnesium ion in the ice-making solution is within the above range, compared with using pure water to make ice, the coefficient of friction can be reduced by at least 40%.

[0047] As one possible implementation, the temperature of the ice surface is controlled at -6°C to -10°C to allow the ice-making solution to freeze and form the surface ice of the ice rink track. When the ice surface temperature is controlled within this range, the resulting surface ice will not be too soft, and the coefficient of friction will be relatively low, reducing the likelihood of athletes experiencing discomfort due to excessively low temperatures.

[0048] In some embodiments, the ice-making solution also contains anions, including acetate ions.

[0049] As an example, the anions contained in the ice-making solution may also be selected from at least one of chloride ions, bromide ions, iodide ions, thiocyanate ions, and nitrate ions.

[0050] In some embodiments, the solvent contained in the ice-making solution is selected from water. Optionally, the water is selected from at least one of ultrapure water and tap water.

[0051] The second aspect of this application provides an ice rink track, which is prepared using the method described in the first aspect of this application. This ice rink track has a low and stable coefficient of friction, and also exhibits high ice surface strength.

[0052] The technical solution of the present invention will be described in detail below with reference to specific embodiments. It should be understood that these embodiments are only for illustrating the present invention and are not intended to limit the scope of the present invention. For experimental methods in the following embodiments where specific conditions are not specified, please refer to the guidelines given in this invention, or follow experimental manuals or conventional conditions in the art, or follow the conditions recommended by the manufacturer, or refer to experimental methods known in the art.

[0053] In the specific embodiments described below, the measurement parameters involving raw material components may have slight deviations within the weighing accuracy range unless otherwise specified. Temperature and time parameters are subject to acceptable deviations due to instrument testing accuracy or operational precision.

[0054] Example 1

[0055] Weigh 240g of cesium acetate and add it to the water tank of the ice-making truck. The water tank has a volume of 1m³. Fill the water tank with water and dissolve it completely to prepare an ice-making solution. The concentration of cesium acetate in the solution is 1.25mmol / L and the concentration of cesium ions is 1.25mmol / L.

[0056] An ice-spraying truck sprays ice-making solution onto the ice surface while circling the ice rink and controlling the ice surface temperature at -7°C. After 30 minutes, the ice surface is completely frozen, resulting in the surface ice of the ice rink track.

[0057] Example 2

[0058] Weigh 19195g of cesium acetate and add it to the water tank of the ice-making truck. The water tank has a volume of 1m³. Fill the water tank with water and dissolve it completely to prepare an ice-making solution. The concentration of cesium acetate in the solution is 100mmol / L and the concentration of cesium ions is 100mmol / L.

[0059] An ice-spraying truck sprays ice-making solution onto the ice surface while circling the ice rink and controlling the ice surface temperature at -6°C. After 30 minutes, the ice surface is completely frozen, resulting in the surface ice of the ice rink track.

[0060] Example 3

[0061] Weigh 480g of cesium acetate and add it to the water tank of the ice-making truck. The water tank has a volume of 1m³. Fill the water tank with water and dissolve it completely to prepare an ice-making solution. The concentration of cesium acetate in the solution is 2.5mmol / L and the concentration of cesium ions is 2.5mmol / L.

[0062] An ice-spraying truck sprays ice-making solution onto the ice surface while circling the ice rink and controlling the ice surface temperature at -8°C. After 30 minutes, the ice surface is completely frozen, resulting in the surface ice of the ice rink track.

[0063] Example 4

[0064] Weigh 960g of cesium acetate and add it to the water tank of the ice-making truck. The water tank has a volume of 1m³. Fill the water tank with water and dissolve it completely to prepare an ice-making solution. The concentration of cesium acetate in the solution is 5mmol / L and the concentration of cesium ions is 5mmol / L.

[0065] An ice-spraying truck sprays ice-making solution onto the ice surface while circling the ice rink and controlling the ice surface temperature at -9°C. After 30 minutes, the ice surface is completely frozen, resulting in the surface ice of the ice rink track.

[0066] Example 5

[0067] Weigh 82.5g of lithium acetate and add it to the water tank of the ice-making truck. The water tank has a volume of 1m³. Fill the water tank with water and dissolve the lithium acetate completely to prepare an ice-making solution. The concentration of lithium acetate in the solution is 1.25mmol / L and the concentration of lithium ions is 1.25mmol / L.

[0068] An ice-spraying truck sprays ice-making solution onto the ice surface while circling the ice rink and controlling the ice surface temperature at -7°C. After 30 minutes, the ice surface is completely frozen, resulting in the surface ice of the ice rink track.

[0069] Example 6

[0070] Weigh 66,000 g of lithium acetate and add it to the water tank of the ice-making truck. The water tank has a volume of 1 m³. Fill the water tank with water and dissolve the lithium acetate completely to prepare an ice-making solution. The concentration of lithium acetate in the solution is 1 mol / L and the concentration of lithium ions is 1 mol / L.

[0071] An ice-spraying truck sprays ice-making solution onto the ice surface while circling the ice rink and controlling the ice surface temperature at -10℃. After 30 minutes, the ice surface is completely frozen, resulting in the surface ice of the ice rink track.

[0072] Example 7

[0073] Weigh 165g of lithium acetate and add it to the water tank of the ice-making truck. The water tank has a volume of 1m³. Fill the water tank with water and dissolve the lithium acetate completely to prepare an ice-making solution. The concentration of lithium acetate in the solution is 2.5mmol / L and the concentration of lithium ions is 2.5mmol / L.

[0074] An ice-spraying truck sprays ice-making solution onto the ice surface while circling the ice rink and controlling the ice surface temperature at -8°C. After 30 minutes, the ice surface is completely frozen, resulting in the surface ice of the ice rink track.

[0075] Example 8

[0076] Weigh 660g of lithium acetate and add it to the water tank of the ice-making truck. The water tank has a volume of 1m³. Fill the water tank with water and dissolve the lithium acetate completely to prepare an ice-making solution. The concentration of lithium acetate in the solution is 10mmol / L and the concentration of lithium ions is 10mmol / L.

[0077] An ice-spraying truck sprays ice-making solution onto the ice surface while circling the ice rink and controlling the ice surface temperature at -6°C. After 30 minutes, the ice surface is completely frozen, resulting in the surface ice of the ice rink track.

[0078] Example 9

[0079] Weigh 356g of magnesium acetate and add it to the water tank of the ice-making truck. The water tank has a volume of 1m³. Fill the water tank with water and dissolve the magnesium acetate completely to prepare an ice-making solution. The concentration of magnesium acetate in the solution is 2.5mmol / L and the concentration of magnesium ions is 2.5mmol / L.

[0080] An ice-spraying truck sprays ice-making solution onto the ice surface while circling the ice rink and controlling the ice surface temperature at -7°C. After 30 minutes, the ice surface is completely frozen, resulting in the surface ice of the ice rink track.

[0081] Example 10

[0082] Weigh 1424g of magnesium acetate and add it to the water tank of the ice-making truck. The water tank has a volume of 1m³. Fill the water tank with water and dissolve the magnesium acetate completely to prepare an ice-making solution. The concentration of magnesium acetate in the solution is 10mmol / L and the concentration of magnesium ions is 10mmol / L.

[0083] An ice-spraying truck sprays ice-making solution onto the ice surface while circling the ice rink and controlling the ice surface temperature at -8°C. After 30 minutes, the ice surface is completely frozen, resulting in the surface ice of the ice rink track.

[0084] Example 11

[0085] Weigh 14240g of magnesium acetate and add it to the water tank of the ice-making truck. The water tank has a volume of 1m³. Fill the water tank with water and dissolve the magnesium acetate completely to prepare an ice-making solution. The concentration of magnesium acetate in the solution is 100mmol / L and the concentration of magnesium ions is 100mmol / L.

[0086] An ice-spraying truck sprays ice-making solution onto the ice surface while circling the ice rink and controlling the ice surface temperature at -10℃. After 30 minutes, the ice surface is completely frozen, resulting in the surface ice of the ice rink track.

[0087] Example 12

[0088] Weigh 178g of magnesium acetate and add it to the water tank of the ice-making truck. The water tank has a volume of 1m³. Fill the water tank with water and dissolve the magnesium acetate completely to prepare an ice-making solution. The concentration of magnesium acetate in the solution is 1.25mmol / L and the concentration of magnesium ions is 1.25mmol / L.

[0089] An ice-spraying truck sprays ice-making solution onto the ice surface while circling the ice rink and controlling the ice surface temperature at -7°C. After 30 minutes, the ice surface is completely frozen, resulting in the surface ice of the ice rink track.

[0090] Example 13

[0091] Weigh 1424g of magnesium acetate and add it to the water tank of the ice-making truck. The water tank has a volume of 1m³. Fill the water tank with water and dissolve the magnesium acetate completely to prepare an ice-making solution. The concentration of magnesium acetate in the solution is 10mmol / L and the concentration of magnesium ions is 10mmol / L.

[0092] An ice-spraying truck sprays ice-making solution onto the ice surface while circling the ice rink and controlling the ice surface temperature at -4°C. After 30 minutes, the ice surface is completely frozen, resulting in the surface ice of the ice rink track.

[0093] Example 14

[0094] Weigh 1424g of magnesium acetate and add it to the water tank of the ice-making truck. The water tank has a volume of 1m³. Fill the water tank with water and dissolve the magnesium acetate completely to prepare an ice-making solution. The concentration of magnesium acetate in the solution is 10mmol / L and the concentration of magnesium ions is 10mmol / L.

[0095] An ice-spraying truck sprays ice-making solution onto the ice surface while circling the ice rink and controlling the ice surface temperature at -20°C. After 30 minutes, the ice surface is completely frozen, resulting in the surface ice of the ice rink track.

[0096] Example 15

[0097] Weigh 238g of magnesium chloride and add it to the water tank of the ice-making truck. The water tank has a volume of 1m³. Fill the water tank with water and dissolve the magnesium chloride completely to prepare an ice-making solution. The concentration of magnesium chloride in the solution is 2.5mmol / L and the concentration of magnesium ions is 2.5mmol / L.

[0098] An ice-spraying truck sprays ice-making solution onto the ice surface while circling the ice rink and controlling the ice surface temperature at -7°C. After 30 minutes, the ice surface is completely frozen, resulting in the surface ice of the ice rink track.

[0099] Example 16

[0100] Weigh 421g of cesium chloride and add it to the water tank of the ice-making truck. The water tank has a volume of 1m³. Fill the water tank with water and dissolve it completely to prepare an ice-making solution. The concentration of cesium chloride in the solution is 2.5mmol / L and the concentration of cesium ions is 2.5mmol / L.

[0101] An ice-spraying truck sprays ice-making solution onto the ice surface while circling the ice rink and controlling the ice surface temperature at -7°C. After 30 minutes, the ice surface is completely frozen, resulting in the surface ice of the ice rink track.

[0102] Example 17

[0103] Weigh 106g of lithium chloride and add it to the water tank of the ice-making truck. The water tank has a volume of 1m³. Fill the water tank with water and dissolve the lithium chloride completely to prepare an ice-making solution. The concentration of lithium chloride in the solution is 2.5mmol / L and the concentration of lithium ions is 2.5mmol / L.

[0104] An ice-spraying truck sprays ice-making solution onto the ice surface while circling the ice rink and controlling the ice surface temperature at -7°C. After 30 minutes, the ice surface is completely frozen, resulting in the surface ice of the ice rink track.

[0105] Example 18

[0106] Weigh 217g of lithium bromide and add it to the water tank of the ice-making truck. The water tank has a volume of 1m³. Fill the water tank with water and dissolve the lithium bromide completely to prepare an ice-making solution. The concentration of lithium bromide in the solution is 2.5mmol / L and the concentration of lithium ions is 2.5mmol / L.

[0107] An ice-spraying truck sprays ice-making solution onto the ice surface while circling the ice rink and controlling the ice surface temperature at -7°C. After 30 minutes, the ice surface is completely frozen, resulting in the surface ice of the ice rink track.

[0108] Example 19

[0109] Weigh 344.6g of lithium iodide and add it to the water tank of the ice-making truck. The water tank has a volume of 1m³. Fill the water tank with water and dissolve the lithium iodide completely to prepare an ice-making solution. The concentration of lithium iodide in the solution is 2.5mmol / L and the concentration of lithium ions is 2.5mmol / L.

[0110] An ice-spraying truck sprays ice-making solution onto the ice surface while circling the ice rink and controlling the ice surface temperature at -7°C. After 30 minutes, the ice surface is completely frozen, resulting in the surface ice of the ice rink track.

[0111] Example 20

[0112] Weigh 162.6g of lithium thiocyanate and add it to the water tank of the ice-making truck. The water tank has a volume of 1m³. Fill the water tank with water and dissolve the lithium thiocyanate completely to prepare an ice-making solution. The concentration of lithium thiocyanate in the solution is 2.5mmol / L and the concentration of lithium ions is 2.5mmol / L.

[0113] An ice-spraying truck sprays ice-making solution onto the ice surface while circling the ice rink and controlling the ice surface temperature at -7°C. After 30 minutes, the ice surface is completely frozen, resulting in the surface ice of the ice rink track.

[0114] Example 21

[0115] Weigh 172.4g of lithium nitrate and add it to the water tank of the ice-making truck. The water tank has a volume of 1m³. Fill the water tank with water and dissolve the lithium nitrate completely to prepare an ice-making solution. The concentration of lithium nitrate in the solution is 2.5mmol / L and the concentration of lithium ions is 2.5mmol / L.

[0116] An ice-spraying truck sprays ice-making solution onto the ice surface while circling the ice rink and controlling the ice surface temperature at -7°C. After 30 minutes, the ice surface is completely frozen, resulting in the surface ice of the ice rink track.

[0117] Comparative Example 1

[0118] Fill the water tank of the ice resurfacing truck with pure water. The water tank has a volume of 1m³. The ice resurfacing truck will circle the ice rink once and pour the water from the water tank onto the ice surface, keeping the ice surface temperature at -7℃. After 30 minutes, the ice surface will be completely frozen, and the surface ice of the track will be obtained.

[0119] The ice surfaces of the racetracks prepared in Examples 1-21 and Comparative Example 1 were tested using the following methods:

[0120] 1. Appearance: Visual inspection.

[0121] 2. Crushing Time: An MCR301 rheometer was used. The upper friction pair in this rheometer consisted of a 12.7 mm diameter, negatively charged silicon nitride sphere, with the ice block to be tested placed below it. The test conditions were: pressure 19 MPa, temperature -10 °C, and linear velocity 1.55 m / s. Pressure was applied to the ice block by the upper friction pair, and its crushing time and coefficient of friction were measured. The coefficient of friction test results for Examples 15-17 and Comparative Example 1 are as follows: Figure 1 As shown. Friction coefficient test results for Examples 17-21. Figure 2 As shown.

[0122] The preparation parameters and test results of the above embodiments and comparative examples are shown in Table 1.

[0123] Table 1

[0124]

[0125] As shown in Table 1, when preparing the surface ice of the ice rink track, adding at least one of cesium ions, lithium ions, and magnesium ions to the ice-making solution can effectively reduce the friction coefficient of the prepared track surface ice, increase the strength of the ice surface, and reduce ice surface cracking compared to using water alone.

[0126] The results of Examples 17-21 show that the type of anion in the ice-making solution has almost no effect on the coefficient of friction of the final ice surface of the race track.

[0127] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0128] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A method for preparing the surface ice of an ice rink track, characterized in that, Includes the following steps: An ice-making solution containing 1.25 mmol / L to 1 mol / L of cations is poured onto the ice surface, and the temperature of the ice surface is controlled at -4℃ to -20℃ so that the ice-making solution freezes to form the surface ice of the ice rink track. The cations include one or more of cesium ions, lithium ions, and magnesium ions.

2. The preparation method according to claim 1, characterized in that, The material forming the friction pair with the ice surface is selected from ceramic materials.

3. The preparation method according to claim 2, characterized in that, The materials that form the friction pair with the ice surface include silicon nitride and A-axis sapphire.

4. The preparation method according to claim 1, characterized in that, The ice-making solution contains cesium ions as cations, and the concentration of cesium ions is 1.25 mmol / L-5 mmol / L.

5. The preparation method according to claim 1, characterized in that, The ice-making solution contains lithium ions as cations, and the concentration of lithium ions is 2.5 mmol / L-10 mmol / L.

6. The preparation method according to claim 1, characterized in that, The ice-making solution contains magnesium ions as cations, and the concentration of magnesium ions is 2.5 mmol / L-10 mmol / L.

7. The preparation method according to claim 1, characterized in that, The temperature of the ice surface is controlled at -6℃ to -10℃ so that the ice-making solution freezes to form the surface ice of the ice rink track.

8. The preparation method according to any one of claims 1 to 7, characterized in that, The ice-making solution also contains anions, including acetate ions.

9. The preparation method according to any one of claims 1 to 7, characterized in that, The solvent in the ice-making solution is selected from water.

10. An ice rink track, characterized in that, It is prepared by the preparation method described in any one of claims 1 to 9.

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