Rapid and convenient method for testing relative snow melting capacity of snow melting agent

Abstract

The invention provides a rapid and convenient method for testing the relative snow-melting capacity of a snow-melting agent, and belongs to the technical field of snow-melting agent tests.The method comprises the steps that a fixed quantity of a sample snow-melting agent solution or a standard substance solution is dripped on standard borneol of the same batch, the time for the standard borneol to be completely melted and penetrated till light holes appear is recorded as the perforating time t, and the perforating time t is recorded as the perforating time t; characterizing the snow melting capacity by the perforation time t, and characterizing the relative snow melting capacity by the ratio W of the perforation time of the sample snow melting agent solution to the perforation time of the standard substance solution. The test method is quick, convenient, easy to operate, low in cost, high in test efficiency and high in field adaptability, can meet the application requirements of road first-line quick decision making, limited equipment and simple and convenient operation, can test a plurality of samples at the same time, can quickly and conveniently test and distinguish the performance advantages and disadvantages of a plurality of snow-melting agents, and is suitable for popularization and application. The method is of great significance to optimization of different types of snow-melting agent products.

Description

Technical Field

[0001] The present invention relates to the technical field of snow-melting agent testing, and in particular to a fast and convenient method for testing the relative snow-melting ability of a snow-melting agent. Background Art

[0002] To ensure safe and smooth winter roads, the most widely used method for snow and ice melting worldwide is to spread de-icing agents. Currently, in the field of road maintenance engineering, there are many different types of de-icing agents used in China, and they vary greatly. The de-icing efficiency of de-icing agents is a core technical indicator for ensuring winter road safety. The scientific nature and applicability of their testing methods are directly related to the timeliness and economic efficiency of maintenance decisions. The testing system used in the current JT / T973-2015 "Non-chlorine Organic De-icing Agents for Road Use" standard has exposed systemic technical bottlenecks in actual engineering applications, as follows: 1. The lengthy test cycle restricts the effectiveness of emergency decision-making: The test process specified in the standard requires the completion of the "ice making-liquid dripping-weighing" cycle in a constant temperature environment. A single complete test cycle lasts for more than 24.5 hours, and the time is mainly consumed by the static snow melting simulation process in a constant temperature environment. This results in insufficient test timeliness. In addition, the static snow melting simulation process is fundamentally different from the dynamic snow melting process under vehicle load in an actual road environment. In addition, during the ice making process in the porcelain crucible, the shape of the frozen ice cubes is not uniform and irregular. After pouring 25mL of snow melting agent solution, it cannot fully contact the ice cubes. Moreover, the contact area varies depending on the shape of the ice cubes. These factors will directly affect the test accuracy, resulting in large differences between parallel test results of the same snow melting agent in actual operation.

[0003] 2. Dependence on precision instruments creates a technological barrier to application: The testing process requires specialized equipment such as analytical balances with an accuracy of 0.1mg and thermostats with a temperature control accuracy of ±0.5°C. Each set of equipment costs over 20,000 yuan and requires regular calibration and maintenance. However, most frontline maintenance units lack such equipment, forcing them to rely on empirical judgment, resulting in an accuracy rate of less than 50% for deicing agent selection.

[0004] 3. Complex operational procedures lead to systematic errors: The standard test method requires pouring snowmelt and weighing the remaining mass of the ice layer after 0.5 hours. On-site engineering statistics show that the residual rate of solution during manual pouring is unstable. Differences in pouring angles between operators can lead to a 2-5mm deviation in the remaining ice layer, directly affecting the reliability of subsequent weighing data. Furthermore, there are no specific regulations for the time and temperature of pouring the liquid, which can cause significant experimental errors in actual operation. Furthermore, frost on the balance pan in low-temperature environments often causes the weighing reading to deviate by more than 0.5mg. The cumulative error introduced by multiple weighings can exceed 15%, exceeding the error control range specified in the standard test method.

[0005] In summary, the existing testing methods for the relative snow-melting ability of de-icing agents have significant defects in terms of time efficiency and operational feasibility. They have become a technical bottleneck restricting scientific decision-making for emergency road maintenance in winter. There is an urgent need for innovative breakthroughs in testing principles and methods to adapt to the needs of fast and convenient application in front-line road operation scenarios. Summary of the Invention

[0006] The present invention provides a fast, convenient, effective, accurate, easy-to-operate, low-cost, highly adaptable on-site, and scalable method for testing the relative snow-melting capacity of a snow-melting agent, so as to meet the application requirements of rapid decision-making on the front line of roads, limited equipment, and simple operation, and solve the problems in the prior art such as long testing cycles, high instrument precision requirements, complex operating procedures, and large test errors caused by various human factors.

[0007] To achieve the above objectives, the present invention provides a rapid and convenient method for testing the relative snow-melting capacity of a deicing agent, comprising: adding a fixed amount of a sample deicing agent solution or a standard solution to standard borneol from the same batch, and recording the time it takes for the standard borneol to be completely melted through until a light-transmitting hole appears, recorded as the perforation time t. The perforation time t is used to characterize the deicing capacity, and the ratio W of the perforation time of the sample deicing agent solution to that of the standard solution is used to characterize the relative deicing capacity.

[0008] The testing method of the present invention can quickly and conveniently measure and effectively differentiate the snowmelting capacity of deicing agents. The shorter the perforation time, the stronger the snowmelt capacity, and the larger the perforation time ratio, the better the relative snowmelt capacity. The test data is accurate and reliable, clearly demonstrating the difference in snowmelt capacity between the sample deicing agent and the standard. This method requires only "drip-time-check perforation" during testing, eliminating the need for complex steps such as weighing and pouring. It is simple and convenient to operate, with intuitive results, high measurement accuracy, low equipment precision requirements and low costs, and easy for maintenance workers to learn. A single sample test takes less than 10 minutes, with highly efficient data acquisition. Testing can be performed in a variety of field environments, conveniently meeting the needs of roadside testing for rapid decision-making, limited equipment, and simple operation.

[0009] Furthermore, the standard ice flakes are cylindrical ice flakes of equal size and uniform thickness. The thickness of the standard ice flakes is 3±0.2 mm and the diameter is 3±0.1 cm.

[0010] Furthermore, the prefabrication process of standard ice flakes is as follows: fill a cylindrical ice cube mold with water, place it in a -20℃ freezer and freeze for 3 hours to form transparent standard ice flakes with a thickness of 3±0.2mm and a diameter of 3±0.1cm, and then demold it for later use. Use ice cube molds with uniform specifications and sizes to freeze ice cubes in a low-temperature refrigerator to avoid the impact of different ice cube sizes or cracks on test accuracy. The prefabrication of standard ice flakes can be done in batches. The same water can be used to prepare more than 100 pieces in a single batch for later use. Ice flakes from the same batch can minimize test errors, and prefabricated ice flakes are portable and durable, which can also shorten test time.

[0011] Furthermore, the standard solution is a 29.0% by mass calcium chloride solution or an 18.0% by mass sodium chloride solution. Using calcium chloride or sodium chloride as a standard is consistent with the standards in JT / T973-2015. Using them as a performance benchmark allows for more intuitive testing of the snowmelting capacity and relative snowmelting capacity of the sample deicing agent. Consistent with JT / T973-2015, sodium chloride is tested at -10°C, while calcium chloride is tested at -15°C.

[0012] Furthermore, the mass fraction of the sample deicing agent solution is 18.0% or 29.0%. The sample deicing agents to be tested in this invention can be either solid or liquid. In specific tests, they all need to be prepared as solutions. Consistent with JT / T973-2015, when the concentration is uncertain, deicing agents with a freezing point between -15°C and -10°C should be prepared at an 18.0% (mass fraction) solution, while deicing agents with a freezing point below -15°C should be prepared at a 29.0% (mass fraction) solution.

[0013] Furthermore, the amount of sample deicing agent solution or standard solution added to the standard borneol is 0.5 mL, and the addition location is the center of the standard borneol. This test method uses minimal reagents, effectively reducing testing costs and avoiding the impact of varying contact areas between the deicing agent and borneol. During specific testing, multiple standard borneol can be placed side by side, and multiple sample deicing agents can be tested simultaneously, allowing for rapid screening of the most effective deicing agent and improving testing efficiency.

[0014] Furthermore, the above-mentioned testing method specifically includes the following steps: Step 1: Take a piece of pre-made standard ice and place it on a pre-cooled insulation tray.

[0015] Step 2: Use a dropper to draw 0.5 mL of sample deicing agent solution and drop it vertically onto the center of the standard borneol.

[0016] Step 3: Immediately start the timer and observe the changes in the position of the standard ice chips being dropped.

[0017] Step 4: Record the time from when the standard ice sheet is completely melted through to when a light-transmitting hole appears, which is recorded as the perforation time t1.

[0018] Step 5: Repeat steps 1 to 4 above to test the puncture time t2 of the standard solution.

[0019] Step 6: Compare the puncture time t1 and the puncture time t2. If t1 < t2, the snow-melting ability of the sample de-icing agent is better than that of the standard. If t1 > t2, the snow-melting ability of the sample de-icing agent is worse than that of the standard.

[0020] During specific testing, Step 5 of the standard solution test can be performed simultaneously with Steps 1-4. Performing the test at the same ambient temperature helps eliminate the impact of ambient temperature on test results. This test method was developed based on the needs of field operations on the road. If performed in a laboratory, to further improve test accuracy, the standard solution and sample deicing agent solution must be stored at the corresponding operating temperature (-10°C or -15°C) for at least 0.5 hours.

[0021] The above-described testing method can be applied to roadside worksites in diverse environments, addressing deficiencies and technical flaws in existing technical specifications. It can simultaneously test multiple samples, enabling quick and convenient testing and differentiation of the performance of various deicing agents, improving testing efficiency and significantly impacting the optimization of different deicing agent products. The ice cube molds, droppers, timers, and pre-cooling trays used in this invention are readily available. Pre-made ice flake refrigerators are also standard equipment at road maintenance stations. No weighing is required during testing, and the thickness of the ice flakes and the amount of solution added are fixed, eliminating human error and improving test accuracy.

[0022] Furthermore, timers include but are not limited to mobile phone stopwatches, electronic watches, digital timers, etc. This testing method can use various timers and / or other devices with timing functions, has high versatility, and is convenient for testing in various field environments.

[0023] Furthermore, the above-mentioned test method also includes a repeated testing step, specifically the following process: the puncture time of the sample deicing agent solution and the standard solution are repeatedly tested N times, and among the N tests, at least N-1 test results differ from the average of the N test results by no more than ±5% of the average. The average of all test results that differ from the average of the N test results by no more than ±5% is calculated as the final puncture time t. Furthermore, N is not less than 3.

[0024] In this test method, the penetration time directly reflects the speed at which the sample deicing agent penetrates the ice flakes and is strongly correlated with the efficiency of snow and ice melting on the road surface. By repeating multiple test steps, multiple sets of data can be obtained simultaneously, increasing the sample size of the results, reducing the test error, and facilitating a more accurate evaluation of the actual snow melting effect of the sample deicing agent, thus having strong practicality.

[0025] Furthermore, the temperature of the pre-cooled insulation tray is -10°C or -15°C. Using a pre-cooled insulation tray lined with dry ice or pre-cooled to -10°C / -15°C metal plate to maintain the low temperature environment for testing can further ensure the accuracy and reliability of the test results, reducing the test error to less than 5%.

[0026] Furthermore, the above step 6 also includes a calculation and evaluation step, and the specific operation is as follows: calculate the relative snow melting capacity W, W = (t2 / t1) × 100%. When W ≥ 100%, the snow melting capacity of the sample snow melting agent is better than that of the standard. The larger the value of W, the better the snow melting capacity of the sample snow melting agent relative to the standard.

[0027] The present invention provides a fast and convenient method for testing the relative snow-melting ability of snow-melting agents. By fixing the thickness of the icy flakes and the amount of solution added, only "drip-time-check the hole" is required during the test, without the need for complex steps such as weighing and pouring. This eliminates human errors and improves test accuracy. It can also test multiple samples at the same time, and can quickly and conveniently test and distinguish the performance advantages and disadvantages of various snow-melting agents, thereby improving test efficiency. This is of great significance for the optimization of different types of snow-melting agent products.

[0028] The testing method of the present invention has low requirements for equipment precision and cost, is easy for maintenance workers to learn, takes less than 10 minutes to test a single sample, has high data acquisition efficiency, and can be tested in various field environments, conveniently meeting the field testing needs of fast decision-making on the front line of roads, limited equipment, and simple operation.

[0029] The present invention provides a method for testing the relative snow-melting ability of de-icing agents based on the ice flake penetration time method, which compresses the 24.5-hour test of the standard method into a 10-minute rapid test. The physical process of ice melting penetration directly reflects the actual effectiveness. This is a truly "pocket laboratory" solution designed for road maintenance workers and has broad application prospects.

[0030] The inventors have measured a large amount of data on the test method, and the test method has been used well on site and in real situations, indicating that the test method of the present invention is reasonable, reliable and practical. DETAILED DESCRIPTION

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention are clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts also fall within the scope of protection of the present invention.

[0032] The following examples utilize conventional instruments and equipment in the art. Unless otherwise specified, the experimental materials and reagents used in the following examples are commercially available and conform to conventional specifications in the art. Where specific techniques or conditions are not specified in the following examples, they can be performed using techniques or conditions described in literature in the art or according to product specifications.

[0033] It should be noted that, in the present invention and the following embodiments, concentrations, ratios, etc. not otherwise specified are all weight concentrations, weight ratios, etc., "%" represents weight percentage, and "parts" represent weight parts, which are common writing habits used by those skilled in the art and will not be repeated in the present invention.

[0034] As a preferred embodiment, the above-mentioned quick and convenient method for testing the relative snow-melting ability of a de-icing agent specifically comprises the following steps: Step 1: Fill a cylindrical ice cube mold with water and freeze it in a -20°C refrigerator for 3 hours to form transparent standard ice flakes with a thickness of 3±0.2 mm and a diameter of 3±0.1 cm. Remove the mold and set aside.

[0035] Step 2: Prepare a sample deicing agent solution with a mass fraction of 18.0% or 29.0%, and a calcium chloride solution with a mass fraction of 29.0% or a sodium chloride solution with a mass fraction of 18.0% as the standard solution.

[0036] Step 3: Take a piece of pre-made standard ice and place it on a pre-cooled insulation tray at a temperature of -10℃ or -15℃.

[0037] Step 4: Use a dropper to draw 0.5 mL of sample deicing agent solution and drop it vertically onto the center of the standard borneol.

[0038] Step 5: Immediately start the timer and observe the changes in the position of the standard ice chips being dropped.

[0039] Step 6: Record the time from when the standard ice sheet is completely melted through to when a light-transmitting hole appears, which is recorded as the perforation time t1.

[0040] Step 7: Repeat steps 3 to 6 to test the puncture time t2 of the standard solution.

[0041] Step 8: Repeat the perforation time test for the sample deicing agent solution and the standard solution N times respectively. Among the N tests, the difference between at least N-1 test results and the average value of these N test results is no more than ±5% of the average value. The average value of all test results that differ from the average value of the N test results by no more than ±5% of the average value is calculated as the final perforation time t.

[0042] Step 9: Compare the puncture time t1 and the puncture time t2. If t1 < t2, the snow-melting ability of the sample de-icing agent is better than that of the standard. If t1 > t2, the snow-melting ability of the sample de-icing agent is worse than that of the standard.

[0043] Step 10: Calculate the relative snow-melting capacity W, W = (t2 / t1) × 100%. When W ≥ 100%, the snow-melting capacity of the sample snow-melting agent is better than that of the standard. The larger the value of W, the better the snow-melting capacity of the sample snow-melting agent relative to the standard.

[0044] The present invention will be further described in detail below with reference to the following examples. However, it should be understood that the examples are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0045] Before testing, batches of standard borneol and standard solutions were prepared. The examples of the present invention all used the same batch of standard borneol and standard solutions for testing. The specific process is as follows: 1) Fill a cylindrical ice cube tray mold with water and freeze at -20°C for 3 hours to form transparent standard ice flakes with a thickness of 3 ± 0.2 mm and a diameter of 3 ± 0.1 cm. Remove from the mold and set aside.

[0046] 2) Prepare 29.0% by mass calcium chloride solution and 18.0% by mass sodium chloride solution and set aside.

[0047] Example 1: A quick and convenient method for testing the relative snow-melting capacity of deicing agents. The sample deicing agent to be tested is a potassium acetate-based deicing agent (liquid, mainly composed of potassium acetate and additives) with a freezing point below -15°C. The specific test steps are as follows: 1) Prepare a 29.0% mass fraction sample deicing agent solution - potassium acetate-based deicing agent solution and set aside.

[0048] 2) Take a piece of standard ice and place it on a pre-cooled insulation tray that has been pre-cooled to -15℃.

[0049] 3) Use a dropper to draw 0.5 mL of the potassium acetate-based deicing agent solution to be tested and drop it vertically onto the center of the standard borneol.

[0050] 4) Immediately start the stopwatch on your phone and observe the changes in the position of the standard borneol droplets.

[0051] 5) Record the time it takes for the standard ice sheet to be completely melted through and for a light-transmitting hole to appear, and record the perforation time t. Repeat the test at least three times, and among the three tests, the difference between at least two test results and the average of the three test results is no more than ±5% of the average. Calculate the average of all test results that differ from the average of the three test results by no more than ±5% of the average as the final perforation time t1.

[0052] 6) Repeat steps 3 to 6 above and perform the test at least three times to obtain the puncture time t2 of the test standard solution-calcium chloride solution.

[0053] 7) Compare the above-mentioned perforation time t1 and perforation time t2, and calculate the relative snowmelt capacity W using the formula W = (t2 / t1) × 100%.

[0054] The test data and calculation results are shown in Table 1 below: Table 1 Conclusion: Since t1 < t2, the potassium acetate-based deicing agent in this embodiment has a better deicing ability than the standard calcium chloride. Since W ≥ 100%, the potassium acetate-based deicing agent has a better deicing ability than calcium chloride.

[0055] Example 2: A quick and convenient method for testing the relative snow-melting capacity of deicing agents. The sample deicing agent to be tested is a polyol deicing agent (liquid, mainly composed of ethylene glycol and additives) with a freezing point between -10°C and -15°C. The specific test steps are as follows: 1) Prepare a sample deicing agent solution (polyol deicing agent solution) with a mass fraction of 18.0% and set aside.

[0056] 2) Place one piece of standard ice on a pre-cooled insulation tray that has been pre-cooled to -10°C.

[0057] 3) Use a dropper to draw 0.5 mL of the polyol deicing agent solution to be tested and drop it vertically onto the center of the standard borneol.

[0058] 4) Immediately start the stopwatch on your phone and observe the changes in the position of the standard borneol droplets.

[0059] 5) Record the time it takes for the standard ice sheet to be completely melted through and for a light-transmitting hole to appear, and record the perforation time t. Repeat the test at least three times, and among the three tests, the difference between at least two test results and the average of the three test results is no more than ±5% of the average. Calculate the average of all test results that differ from the average of the three test results by no more than ±5% of the average as the final perforation time t1.

[0060] 6) Repeat steps 3 to 6 above and repeat the test at least 3 times to obtain the puncture time t2 of the test standard solution-sodium chloride solution.

[0061] 7) Compare the above-mentioned perforation time t1 and perforation time t2, and calculate the relative snowmelt capacity W using the formula W = (t2 / t1) × 100%.

[0062] The test data and calculation results are shown in Table 2 below: Table 2 Conclusion: Since t1 < t2, the polyol deicing agent in this embodiment has a better deicing ability than the standard sodium chloride. Since W ≥ 100%, the polyol deicing agent has a better deicing ability than sodium chloride.

[0063] Comparative Example 1: The potassium acetate-based deicing agent and the polyol deicing agent in Example 1 and Example 2 were taken, and their relative deicing and melting abilities were measured using the method recorded in JT / T973-2015, and recorded as Control Group 1 (potassium acetate-based deicing agent) and Control Group 2 (polyol deicing agent). During the tests of Control Group 1 and Control Group 2, the operation time for manually pouring the deicing liquid was uniformly 10 seconds, and the sample deicing agent solution and the standard solution were tested at least three times, respectively. Among the three tests, the difference between the results of at least two tests and the average of the three test results was no more than ±5% of the average value, and the average of all test results whose difference from the average of the three test results was no more than ±5% of the average value was calculated as the final weighing mass.

[0064] The results compared with the test methods in Example 1 and Example 2 are shown in Table 3 below: Table 3 The test results for Control Groups 1 and 2 above both showed that potassium acetate-based deicing agents and polyol-based deicing agents had better deicing capabilities than the standard, consistent with the test results for Examples 1 and 2 of the present invention. While the melting and weighing of ice cubes in the control group did not allow for a direct comparison of the deicing capabilities of the deicing agents, the speed of ice flake perforation in the examples directly reflected the deicing speed of the deicing agents, making them more convenient for field testing.

[0065] In Table 3 above, the total test time includes the time for prefabricating ice cubes, and repeated tests are performed in parallel. The results show that the test time of Examples 1 and 2 is significantly shorter than that of Control Groups 1 and 2. The test method of the present invention eliminates the 3 hours of prefabricating ice cubes, and the single sample test time is less than 10 minutes. There is no need for complex steps such as weighing and pouring. The data acquisition efficiency is high, the human error is small, the measurement accuracy is high, and the equipment requirements are low. No low-temperature constant temperature box or high-precision analytical balance is required. Maintenance workers can easily learn it and can meet the on-site testing needs of fast decision-making, limited equipment, and simple operation on the road front line.

[0066] It should be noted that the detailed steps of some operations are not described in detail in this disclosure, but are well-known to those skilled in the art and are therefore not further described here. Furthermore, in this disclosure, all features, such as values, quantities, contents, and concentrations, defined in numerical ranges or percentage ranges are provided for simplicity and convenience only. Accordingly, the description of numerical ranges or percentage ranges should be considered to encompass and specifically disclose all possible subranges and individual values ​​within those ranges (including integers and fractions).

[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. In the present invention, not all possible combinations of the various technical features in the various embodiments or embodiments are described. As long as there is no contradiction in the combination of these technical features, the various technical features in the various embodiments or embodiments can be arbitrarily combined, and all possible combinations should be considered to be within the scope of this specification. Although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that the technical solutions described in the above embodiments can still be modified, or some or all of the technical features therein can be replaced by equivalents; and these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A quick and convenient method for testing the relative snow-melting ability of a de-icing agent, characterized in that: include: A fixed amount of sample deicing agent solution or standard solution was added to the standard borneol from the same batch. The time it took for the standard borneol to be completely melted through and a light-transmitting hole to appear was recorded, which was recorded as the perforation time t. The perforation time t was used to characterize the deicing ability, and the ratio of the perforation time of the sample deicing agent solution to that of the standard solution, W, was used to characterize the relative deicing ability.

2. The method for testing the relative snow-melting ability of a fast and convenient snow-melting agent according to claim 1, characterized in that: The standard ice flakes are cylindrical ice flakes of equal size and uniform thickness. The thickness of the standard ice flakes is 3±0.2 mm and the diameter is 3±0.1 cm.

3. The method for testing the relative snow-melting ability of a snow-melting agent according to claim 1, wherein: The standard ice flakes are prepared as follows: a cylindrical ice cube mold is filled with water, placed in a -20°C refrigerator and frozen for 3 hours to form transparent standard ice flakes with a thickness of 3±0.2 mm and a diameter of 3±0.1 cm, and then demolded for later use.

4. The method for testing the relative snow-melting ability of a fast and convenient snow-melting agent according to claim 1, characterized in that: The standard solution is a calcium chloride solution with a mass fraction of 29.0% or a sodium chloride solution with a mass fraction of 18.0%.

5. The method for testing the relative snow-melting ability of a snow-melting agent according to claim 1, wherein: The mass fraction of the sample deicing agent solution is 18.0% or 29.0%.

6. The method for testing the relative snow-melting ability of a fast and convenient snow-melting agent according to claim 1, characterized in that: The amount of the sample deicing agent solution or the standard solution added to the standard borneol is 0.5 mL, and the adding position is the center of the standard borneol.

7. The method for quickly and conveniently testing the relative snow-melting ability of a deicing agent according to any one of claims 1 to 6, characterized in that: The testing method specifically comprises the following steps: Step 1: Take a piece of pre-made standard ice and place it on a pre-cooled insulation tray; Step 2: Use a dropper to draw 0.5 mL of the sample deicing agent solution and drop it vertically onto the center of the standard borneol; Step 3: Immediately start the timer and observe the changes in the position of the standard ice flakes being dropped; Step 4: Record the time from when the standard ice sheet is completely melted through to when a light-transmitting hole appears, which is recorded as the perforation time t1; Step 5: Repeat steps 1 to 4 above to test the puncture time t2 of the standard solution; Step 6: Compare the puncture time t1 and the puncture time t2. If t1 < t2, the snow-melting ability of the sample de-icing agent is better than that of the standard. If t1 > t2, the snow-melting ability of the sample de-icing agent is worse than that of the standard.

8. The method for testing the relative snow-melting ability of a snow-melting agent according to claim 7, wherein: The test method also includes a repeated testing step, specifically: the perforation time of the sample deicing agent solution and the standard solution are tested repeatedly N times, and among the N tests, the difference between at least N-1 test results and the average value of the N test results is no more than ±5% of the average value, and the average value of all test results that differ from the average value of the N test results by no more than ±5% of the average value is calculated as the final perforation time t.

9. The method for testing the relative snow-melting ability of a fast and convenient snow-melting agent according to claim 7, characterized in that: The temperature of the pre-cooling and heat preservation tray is -10°C or -15°C.

10. The quick and convenient method for testing the relative snow-melting ability of a snow-melting agent according to claim 8, characterized in that: Step 6 also includes a calculation and evaluation step, which is specifically performed as follows: calculating the relative snow melting capacity W, W = (t2 / t1) × 100%. When W ≥ 100%, the snow melting capacity of the sample snow melting agent is better than that of the standard. The larger the value of W, the better the snow melting capacity of the sample snow melting agent relative to the standard.

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