An aerosol can type ice-shaped developer and a manufacturing method thereof

Abstract

This application discloses an aerosol can-type ice-shaped developer and its manufacturing method, relating to the field of ice shape measurement technology in ice wind tunnel testing. The aerosol can-type ice-shaped developer includes a mother liquor and a propellant; the propellant is propane, and the mother liquor is the ice-shaped developer, with a mass ratio of propellant to mother liquor of (3-3.5):(6.5-7). This application achieves the production of a finished ice-shaped developer by encapsulating the ice-shaped developer and propellant in an aerosol can in a specific ratio, solving the problems of existing ice-shaped developers requiring immediate preparation and being difficult to store, and significantly improving the management efficiency of developer-related equipment. Furthermore, during use, the propane undergoes flash evaporation, which can tear the developer mother liquor to complete atomization, while simultaneously accelerating the volatilization of ethyl acetate in the mother liquor, thereby inhibiting coating sagging and improving spray coating quality.

Description

Technical Field

[0001] This application relates to the field of ice shape measurement technology in ice wind tunnel testing, and in particular to an aerosol can-type ice shape developer and its manufacturing method. Background Technology

[0002] In ice wind tunnel tests, the ice profile is one of the core test data. At present, three-dimensional laser scanning equipment is mainly used to collect the geometric shape data of ice. However, except for frost ice, most ice shapes have high light transmittance. The laser penetrates the ice layer, making it difficult for the equipment to receive the reflected light signal, thus making it impossible to accurately identify the ice surface boundary, which easily leads to missing ice profile and data distortion.

[0003] To address the interference of ice on laser transmission, a common approach is to coat the surface of the specimen with an ice-shaped developer. This enhances the diffuse reflection capability of the ice surface, ultimately improving the measurement accuracy of laser 3D scanning.

[0004] Currently, there are no pre-made ice-shaped developers suitable for low-temperature operating environments. The industry generally prepares ice-shaped developers on-site and uses traditional spraying tools. This method relies on scattered raw materials, various measuring instruments, and spraying tools, resulting in complex equipment management and cumbersome preparation procedures, severely limiting the efficiency of 3D scanning work. Firstly, the existing ice-shaped developer requires separate storage of its various components and spraying tools, making management cumbersome. Ethyl acetate is a flammable liquid and must be stored separately in the hazardous chemicals room; modified titanium dioxide easily absorbs moisture from the air during long-term storage, leading to clumping due to dampness; glassware such as test tubes, measuring cylinders, and droppers are fragile and easily contaminated, requiring separate storage; spray bottles, spray guns, and other spraying tools, along with their accessories and spare parts, require special storage.

[0005] Secondly, the process involves numerous steps, with auxiliary operations taking significantly longer than the actual spraying time. Before each test, the required amount of developer needs to be estimated and prepared, then transferred to the spraying tools for application. Afterward, the tools must be cleaned promptly. This preparation time is substantial, and the remaining developer, due to its poor storage stability, must be discarded, resulting in material waste. Furthermore, the spraying tools must be cleaned, as residual titanium dioxide powder, once dried and hardened, can easily clog nozzles and pipes.

[0006] Third, the use of ice-type developer is limited by the spraying tools. For spray bottles, the capacity is small, the spray range is narrow, and the nozzle is prone to clogging. For lithium battery spray guns, the spray range is wide, but it is not possible to achieve small-area directional touch-up spraying. When touch-up spraying, it is easy to cause local coating to be too thick, resulting in sagging.

[0007] A review of existing publicly available technical literature reveals that research primarily focuses on the improvement and optimization of ice-shaped developer formulations, without systematically designing storage and usage methods for these developers. Therefore, the current on-site preparation and temporary spraying methods suffer from drawbacks such as insufficient ease of use, low operational efficiency, poor storage stability, and complex management, requiring urgent improvement. Summary of the Invention

[0008] This application discloses an aerosol can-type ice-shaped developer and its manufacturing method, in order to solve the technical problems of ice-shaped developers in the related art, such as insufficient ease of use, low operating efficiency, poor storage stability, and complex management.

[0009] To solve the above problems, this application adopts the following technical solution: In a first aspect, embodiments of this application provide an aerosol can-type ice-shaped developer, comprising a mother liquor and a propellant; the propellant is propane, the mother liquor is an ice-shaped developer, and the mass ratio of the propellant to the mother liquor is (3-3.5):(6.5-7).

[0010] Secondly, embodiments of this application provide a method for manufacturing an aerosol can-type ice-shaped developer, comprising the following steps: Step S10: Prepare ice-shaped developer; Step S20: Fill the aerosol can with ice-shaped developer and add a vibrating bead, and pre-install the valve; then fill the propellant according to the mass ratio of propellant to ice-shaped developer (3-3.5): (6.5-7), seal the can, install the actuator, and equip it with a directional conduit to obtain the finished aerosol can.

[0011] The technical solutions adopted in the embodiments of this application can achieve the following beneficial effects: The aerosol can-type ice-shaped developer provided in this application achieves long-term stable storage of the developer by encapsulating an ice-shaped developer mother liquor containing PDMS-modified titanium dioxide and ethyl acetate with propane propellant in an aerosol can at a mass ratio of (3-3.5):(6.5-7). After batch preparation of the aerosol cans, they can be used immediately, greatly improving the convenience of on-site operations and significantly saving preparation time. This completely eliminates the cumbersome operations of existing technologies, which require immediate preparation and use, disposal of unused portions, and cleaning of spraying tools after use, significantly improving the efficiency of 3D scanning operations in ice wind tunnels. Simultaneously, during use, the propane undergoes flash evaporation, which can tear the developer mother liquor to complete atomization, while also accelerating the volatilization of ethyl acetate in the mother liquor, thereby inhibiting coating sagging and improving the quality of spray coating. Specifically, this application has the following beneficial effects: (1) The aerosol can type ice-shaped developer provided in this application pre-prepares the ice-shaped developer into a finished aerosol can, which can be used immediately and greatly improves the convenience of using the ice-shaped developer. On the one hand, it completely eliminates the preparation process such as weighing, mixing and transferring on site, which greatly shortens the test preparation time; on the other hand, there is no need to clean any spraying tools after the spraying operation. The aerosol can has a valve seal, and the residual ice-shaped developer can be sealed with the can and reused directly next time. This avoids the cumbersome operation of having to discard the remaining liquid and clean the nozzle and pipeline each time in the traditional mode, and also reduces the waste of ice-shaped developer materials and the burden of waste liquid treatment.

[0012] (2) The aerosol can type ice-shaped developer provided in this application can significantly improve the storage stability of the ice-shaped developer. The sealed aerosol can effectively prevents the volatilization of ethyl acetate and protects it from external contamination, allowing the developer to be stored stably for a long time without performance degradation. Furthermore, the aerosol can of this application can also be equipped with shaking beads, which can help quickly disperse the soft sediment that may form at the bottom of the can due to long-term static storage, avoiding nozzle clogging caused by excessive local concentration; combined with a directional conduit, it can achieve small-area directional secondary spraying, avoiding the problem of excessively thick coating and damage to the original ice-like appearance caused by traditional large-area spraying. The aerosol can only be shaken thoroughly before use, making it ready to use immediately and greatly simplifying the operation process.

[0013] (3) The aerosol can-type ice-shaped developer provided in this application significantly reduces the management difficulty of developer-related reagents and supporting tools. Since the ice-shaped developer is pre-packaged in an aerosol can, there is no need to store ethyl acetate (flammable liquid) and modified titanium dioxide (which requires moisture protection) separately on site, eliminating the need for hazardous chemical warehouse management and moisture-proof storage; at the same time, there is no need to equip with complicated spraying tools and accessories such as spray bottles, lithium-ion spray guns, spare batteries, chargers, nozzles, and fine brushes, reducing the cost of equipment purchase, storage and maintenance, and significantly reducing the overall management burden.

[0014] (4) The aerosol can type ice-shaped developer provided in this application has good compatibility between the propane propellant and the mother liquor. After being sprayed out, it flashes simultaneously, which can not only assist the atomization of the ice-shaped developer, but also accelerate the evaporation rate of the dispersant in the ice-shaped developer, effectively alleviate the sagging phenomenon caused by solvent evaporation inhibition under low temperature environment, thereby improving the coating uniformity and improving the integrity and accuracy of three-dimensional scanning data.

[0015] In summary, this application overcomes the shortcomings of existing ice shape developers, such as insufficient ease of use, low operational efficiency, poor storage stability, and complex management, and significantly improves the efficiency and effectiveness of three-dimensional measurement of ice shape in ice wind tunnel experiments. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0017] Figure 1 This is a schematic diagram of the structure of the aerosol can in the embodiments of this application; Figure 2 This is a schematic diagram of the assembly of the directional catheter in an embodiment of this application; Figure 3 This is a comparison chart of the spray uniformity test results of the aerosol can-type ice developer (PDMS modified titanium dioxide and ethyl acetate mass ratios of 1:6 and 1:8, respectively) provided in Examples 1 and 3 of this application after being frozen at -5°C for 24 hours; Figure 4 A photograph of the original state of the ice surface before spraying the aerosol can-type ice developer provided in this embodiment of the application; Figure 5 A photograph showing the ice coating effect after spraying the aerosol can-type ice developer according to an embodiment of this application; Figure 6 A three-dimensional scanning image of the ice surface after being sprayed with an aerosol can-type ice developer according to an embodiment of this application.

[0018] In the diagram: 10, tank body; 20, valve cup; 30, valve assembly; 40, actuator; 50, nozzle; 60, directional guide tube. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0020] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0021] In related technologies, the three-dimensional measurement of ice shape in ice wind tunnel tests generally adopts a mode of on-site preparation of ice shape developer and operation with traditional spraying tools. This mode has the following technical defects: ① The storage conditions of each component of the developer (ethyl acetate, modified titanium dioxide) and the spraying tools (lithium-ion spray gun, glassware, etc.) vary, making management complex; ② Each test requires on-site weighing and mixing, and the spraying tools need to be cleaned after the operation, with auxiliary operation time far exceeding the spraying operation time, and the remaining developer cannot be stored, resulting in serious material waste; ③ Traditional spray bottles have a small atomization range and are prone to clogging; spray guns have a large atomization range but cannot achieve small-area directional respraying, which can easily cause the coating to be too thick and damage the ice morphology, and the volatilization of ethyl acetate is suppressed at low temperatures, which can easily cause sagging during spraying. In addition, existing public technologies mostly focus on improving the formulation of ice shape developer, and there is no disclosure of technology that systematically designs the storage, ease of use, and matching spraying mode of ice shape developer.

[0022] The inventive concept of this application is to encapsulate an ice-shaped developer (using PDMS-modified titanium dioxide as a diffuse reflective coating and ethyl acetate as a dispersant) and a propane propellant in a specific mass ratio (3-3.5):(6.5-7) within an aerosol can, thus producing a ready-to-use aerosol can product. The sealed encapsulation of the aerosol can achieves long-term stable storage of the developer (sealing prevents ethyl acetate evaporation and contamination), eliminating the need for on-site preparation and cleaning of spraying tools. The flash evaporation effect of the propane propellant accelerates the evaporation of ethyl acetate at low temperatures, suppressing sagging. The detachable directional conduit 60 enables precise respraying of localized areas, preventing excessive local coating thickness from damaging the ice surface. The inclusion of vibrating beads within the can 10 helps to quickly disperse any loose sediment that may form after long-term standing, preventing nozzle 50 clogging. Therefore, this application systematically solves the aforementioned deficiencies of the prior art from three dimensions: storage, management, and use, effectively improving the efficiency and effectiveness of three-dimensional ice shape measurement in ice wind tunnel experiments.

[0023] Therefore, this application proposes an aerosol can-type ice-shaped developer and its manufacturing method, which are described below in conjunction with the appendix. Figures 1 to 6This application provides a detailed description of an aerosol can-type ice-shaped developer and its manufacturing method through specific embodiments and application scenarios.

[0024] In a first aspect, this application provides an aerosol can-type ice-shaped developer, comprising a mother liquor and a propellant; the propellant is propane, the mother liquor is an ice-shaped developer, and the mass ratio of the propellant to the mother liquor is (3-3.5):(6.5-7).

[0025] In some embodiments, the propane-butane comprises 10%-20% propane and 80%-90% isobutane by mass percentage. This proportion of propane-butane propellant, primarily composed of isobutane with a high boiling point at atmospheric pressure, ensures safe filling, maintains moderate pressure balance within the sealed aerosol can, and provides sufficient jet thrust to tear the ice-shaped developer mother liquor into uniform, fine droplets without causing excessive impact on the ice surface and thus damaging the ice shape.

[0026] In some embodiments, the propane-butane contains 15% propane by mass and 85% isobutane by mass.

[0027] In some embodiments, the mass ratio of propellant to mother liquor is 3.2:6.8.

[0028] In some embodiments, the raw materials of the ice-shaped developer include PDMS-modified titanium dioxide and ethyl acetate; the mass ratio of PDMS-modified titanium dioxide to ethyl acetate is 1:6 to 1:10; and the particle size of the PDMS-modified titanium dioxide is 30 nm to 100 nm. PDMS-modified titanium dioxide particles can maintain a uniform dispersion in ethyl acetate for a long period of time, and are not prone to agglomeration and sedimentation, making the pre-preparation and long-term storage of the ice-shaped developer possible. Furthermore, the propellant and mother liquor are packaged in an aerosol can at a mass ratio of (3-3.5):(6.5-7). The sealed storage of the aerosol can and the dispersion stability of the PDMS-modified titanium dioxide work synergistically to ensure the performance stability of the ice-shaped developer during storage, ultimately obtaining a pre-made ice-shaped developer product that can be stored for a long time and used immediately.

[0029] More preferably, the mass ratio of the PDMS-modified titanium dioxide to ethyl acetate is 1:6 to 1:8.

[0030] In some embodiments, the particle size of PDMS-modified titanium dioxide is 50 nm to 80 nm.

[0031] In some embodiments, the raw materials of the ice-shaped developer further include a wetting and leveling agent, wherein the mass-to-volume ratio of the PDMS-modified titanium dioxide to the wetting and leveling agent is 3:0.1 to 3:0.2, with the PDMS-modified titanium dioxide measured in grams and the wetting and leveling agent measured in milliliters. The wetting and leveling agent builds an interfacial transition bridge between the titanium dioxide coating layer and the system, thereby achieving the functions of wetting, leveling, and auxiliary dispersion. This effectively improves the uniformity of the ice-shaped developer's spread and overall coating effect on complex ice surfaces, enhances the developer's performance on complex ice-shaped surfaces, and makes the developed layer more uniform and complete.

[0032] In some embodiments, the mass-to-volume ratio of the PDMS-modified titanium dioxide to the wetting and leveling agent is 3:0.1.

[0033] In some embodiments, the wetting and leveling agent is a polyether-modified siloxane.

[0034] In some embodiments, the wetting and leveling agent is selected from any one of BYK-349, BYK-347, and AFCONA 3588. Of course, the wetting and leveling agent is not limited to the specific products mentioned above; any polyether-modified siloxane wetting and leveling agent that possesses excellent substrate wetting and leveling properties and good compatibility with PDMS-modified titanium dioxide is suitable for this application.

[0035] In some embodiments, the ethyl acetate is chromatographic grade ethyl acetate with a purity ≥99.9%.

[0036] In some implementations, please refer to Figure 1 The aerosol can includes a can body 10, a valve cup 20, a valve assembly 30, and an external spray assembly. The external spray assembly includes an actuator 40 and a nozzle 50. The valve cup 20 is fitted to the outer edge of the opening of the can body 10, and the valve cup 20 is rolled and pressed to seal and fix the valve assembly 30 to the opening of the can body 10. The actuator 40 is fitted to the top of the valve stem of the valve assembly 30. Pressing the actuator 40 can drive the valve assembly 30 to open and close. The nozzle 50 is disposed on the actuator 40. The mother liquor and propellant are both filled inside the can body 10. It is understood that the above aerosol can is a commercially available standard aerosol packaging structure, and its basic structure and assembly process will not be described in detail here.

[0037] More preferably, the valve assembly 30 adopts a powder valve assembly because: the ice-shaped developer mother liquor contains insoluble powder particles (PDMS modified titanium dioxide), and ordinary liquid valves have narrow flow channels and are easily blocked by powder, resulting in spraying failure; while powder valves have wider flow channels and larger gaps, allowing powder to pass through smoothly, and can ensure reliable opening and closing and uniform spraying after multiple presses.

[0038] In some implementations, please refer to Figure 2 The aerosol can also include a directional conduit 60, which is detachably sleeved on the outside of the nozzle 50 of the actuator 40. This directional conduit 60 is used to perform small-scale directional touch-up spraying on areas requiring additional coating after the nozzle 50 has completed its regular spraying operation. It is understood that the conventional nozzle 50 has a wide spray range, suitable for rapid coating of the entire surface of an ice-shaped object; however, in actual 3D scanning, certain local areas of the ice-shaped object (such as depressions, the back of edges) may have insufficient developer coverage. In this case, the directional conduit 60 can be sleeved on the outside of the nozzle 50. This directional conduit 60 can generate a more concentrated and finer jet stream, allowing for precise touch-up spraying of areas that are not fully covered or have a thin coating, avoiding excessively thick local coatings caused by overall respraying, and saving developer usage. The detachable directional conduit 60 and nozzle 50 sleeve assembly structure is a standard configuration in the aerosol can field, and its installation method and flow guiding principle are existing mature technologies, which will not be described in detail here.

[0039] In some embodiments, the can 10 is also equipped with vibrating beads. It is understood that although the PDMS-modified titanium dioxide used in this application has good dispersion stability in ethyl acetate, during long-term static storage in the aerosol can, the PDMS-modified titanium dioxide may still slowly settle under gravity, forming a soft sediment layer at the bottom of the can 10. The vibrating beads are designed to further ensure the uniformity of the developer through physical assistance. When the can 10 is shaken thoroughly, the vibrating beads tumble and collide with the liquid inside the can. Through the synergistic effect of mechanical grinding, fluid shearing, and turbulent disturbance, the soft sediment at the bottom of the can can be quickly dispersed and resuspended in the mother liquor, avoiding uneven spraying or nozzle 50 clogging caused by excessively high local concentrations.

[0040] Secondly, this application provides a method for manufacturing an aerosol can-type ice-shaped developer, comprising the following steps: Step S10: Prepare ice-shaped developer; Step S20: Fill the aerosol can with ice-shaped developer and add a vibrating bead, and pre-install the valve; then fill the propellant according to the mass ratio of propellant to ice-shaped developer (3-3.5): (6.5-7), seal the can, install the actuator 40, and equip it with a directional conduit 60 to obtain the finished aerosol can.

[0041] The following is in conjunction with the appendix Figures 3 to 6 This application provides a detailed description of an aerosol can-type ice-shaped developer and its manufacturing method through specific embodiments and application scenarios.

[0042] I. Raw Material Description The raw materials used in the following examples and comparative examples are as follows: Ethyl acetate: sourced from Aladdin Reagent (Shanghai) Co., Ltd., model: E116136-500ml, chromatographic grade, with a purity ≥99.9%.

[0043] PDMS modified titanium dioxide: sourced from Daxinong Nanotechnology (Changzhou) Co., Ltd.; model: DXN-TJG20; appearance: white powder; modification ratio: ≥90%; morphology: rutile, rod-shaped; surface properties: oleophilic and hydrophobic; modifier: polydimethylsiloxane (PDMS); particle size: 30-100nm.

[0044] Wetting and leveling agent: sourced from BYK Chemicals, Germany, model number: BYK-349.

[0045] Aerosol cans: sourced from Chengdu Kangdi Technology Co., Ltd.; Propellant: Propane-butane, in which propane accounts for 15% by mass and isobutane accounts for 85% by mass.

[0046] II. Implementation Examples Example 1:

[0047] A method for manufacturing an aerosol can-type ice-shaped developer includes the following steps: Step S10: At room temperature, take 108g of ethyl acetate, 18g of PDMS-modified titanium dioxide, and 0.5ml of BYK-349. Pour ethyl acetate into a clean container, then slowly add PDMS-modified titanium dioxide, and finally add BYK-349. Stir slowly with a glass rod for 30 seconds to form a uniformly dispersed and stable dispersion, which is the ice-shaped developer. Step S20: Place two stainless steel vibrating beads into the aerosol can, then fill the aerosol can with ice-shaped developer and pre-install the powder valve assembly; then fill with propane propellant at a mass ratio of 3:7 between propellant and mother liquor; press and seal the can under high pressure, install the actuator 40, and equip it with a directional conduit 60 to obtain the finished aerosol can-type ice-shaped developer.

[0048] Example 2:

[0049] A method for manufacturing an aerosol can-type ice-shaped developer includes the following steps: Step S10: At room temperature, take 108g of ethyl acetate, 15.5g of PDMS-modified titanium dioxide, and 0.5ml of BYK-349. Pour ethyl acetate into a clean container, then slowly add PDMS-modified titanium dioxide, and finally add BYK-349. Stir slowly with a glass rod for 30 seconds to form a uniformly dispersed and stable dispersion, which is the ice-shaped developer. Step S20: Same as in Example 1, to obtain the finished product of aerosol can-type ice-shaped developer.

[0050] Example 3:

[0051] A method for manufacturing an aerosol can-type ice-shaped developer includes the following steps: Step S10: At room temperature, take 108g of ethyl acetate, 13.5g of PDMS-modified titanium dioxide, and 0.5ml of BYK-349. Pour ethyl acetate into a clean container, then slowly add PDMS-modified titanium dioxide, and finally add BYK-349. Stir slowly with a glass rod for 30 seconds to form a uniformly dispersed and stable dispersion, which is the ice-shaped developer. Step S20: Same as in Example 1, to obtain the finished product of aerosol can-type ice-shaped developer.

[0052] Example 4:

[0053] A method for manufacturing an aerosol can-type ice-shaped developer includes the following steps: Step S10: Same as in Example 1; Step S20: Place two stainless steel vibrating beads into the aerosol can, then fill the aerosol can with ice-shaped developer and pre-install the powder valve assembly; then fill with propane propellant at a mass ratio of propellant to mother liquor of 3.2:6.8; press and seal the can under high pressure, install actuator 40, and equip with directional conduit 60 to obtain the finished aerosol can-type ice-shaped developer.

[0054] Example 5:

[0055] A method for manufacturing an aerosol can-type ice-shaped developer includes the following steps: Step S10: Same as in Example 1; Step S20: Place two stainless steel vibrating beads into the aerosol can, then fill the aerosol can with ice-shaped developer and pre-install the powder valve assembly; then fill with propane propellant at a mass ratio of propellant to mother liquor of 3.5:6.5; press and seal the can under high pressure, install actuator 40, and equip with directional conduit 60 to obtain the finished aerosol can-type ice-shaped developer.

[0056] III. Experimental Examples 1. Aerosol can spray uniformity test 1.1 Experimental Methods: Two aerosol can-type ice-shaped developer samples with PDMS-modified titanium dioxide and ethyl acetate mass ratios of 1:6 (Example 1) and 1:8 (Example 3) were selected and frozen in a -5°C freezer for 24 hours for continuous spraying tests.

[0057] Shake the can thoroughly for 10 seconds before spraying. During the test, spray continuously for 10 seconds each time. Weigh the aerosol can before and after each spray using an electronic balance, and calculate the mass of a single spray by the difference in mass. Repeat the test 5 times for the same sample, record the mass data for each spray, and calculate and analyze the mean, standard deviation, and coefficient of variation of each set of data. During the spraying process, observe whether the spraying status of the aerosol can is normal.

[0058] It should be noted that the -5℃ test temperature setting is based on actual usage scenarios. After wind tunnel testing, the surface temperature of the ice model is usually below -10℃. However, the aerosol can only be pre-cooled in a low-temperature environment before use. It does not need to be lowered to an excessively low temperature. The purpose is to avoid thermal damage or melting of the ice surface caused by the high-temperature jet airflow, while taking into account the flash evaporation efficiency and propulsion power of propane propellant at low temperatures.

[0059] 1.2 Experimental Results Both the aerosol cans from Examples 1 and 3 sprayed smoothly, with a continuous and stable spraying process, and no obvious nozzle clogging or spray interruption was observed. The spray quality test results for the two formulations are shown below. Figure 3 See Table 1.

[0060] Table 1. Test results of spray quality of ice-shaped developer with different formulation ratios in aerosol cans

[0061] Table 1 shows that the coefficients of variation for spray quality in Examples 1 and 3 are 2.16% and 1.86%, respectively, both at very low levels. This indicates that the ice-shaped developer aerosol can exhibits good spray uniformity and stable output at -5℃, meeting the requirements for use in the low-temperature environment of the ice wind tunnel test site. If the sediment accumulated at the bottom of the can is not well redispersed, it will affect the smoothness of the spray and even cause blockage, and the quality of each spray will show a decreasing trend. This test, conversely, proves that the mother liquor in the aerosol can is well dispersed during use.

[0062] 2. Low-temperature spraying effect test 2.1 Experimental Methods Ice molds were prepared in a -10℃ freezer. The ice-shaped developer sample in an aerosol can was placed in a high-low temperature chamber and cooled to -5℃. The surface of the ice mold was sprayed with the aerosol can in the freezer, and the coating effect of the developer on the ice surface was observed. Then, the ice shape was collected by a three-dimensional scanning device.

[0063] 2.2 Experimental Results The actual spraying effect on the ice mold surface is as follows: Figure 4 , Figure 5 , Figure 6 As shown, where Figure 4The ice surface is in its original state without being sprayed with ice-shaped developer. Most of the ice has high light transmittance, which is not conducive to signal reception by the 3D scanner. Figure 5 The state after spraying the ice mold with the aerosol can-type ice developer of Example 1 of this application is that the developer forms a white diffuse reflection layer with good continuity on the ice surface, which can effectively enhance the intensity of laser signal reflection. Figure 6 The point cloud data obtained from the geometric contour of the ice model acquired by the 3D scanning instrument is complete and continuous, with no obvious holes or missing parts, proving that the constructed diffuse reflection coating has a good effect and can effectively ensure the data quality of the 3D scan. In addition, the spraying effect on the ice surface of Example 3 and other feasible ratios is basically the same as that of Example 1, all of which can form a continuous and uniform white diffuse reflection layer, meeting the imaging requirements of 3D scanning of ice shapes.

[0064] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application.

Claims

1. An aerosol can-type ice-shaped developer, characterized in that, It includes a mother liquor and a propellant; the propellant is propane and butane, the mother liquor is an ice-shaped developer, and the mass ratio of the propellant to the mother liquor is (3-3.5):(6.5-7).

2. The aerosol can-type ice-shaped developer according to claim 1, characterized in that, The propane-butane comprises 10%-20% propane and 80%-90% isobutane by mass percentage.

3. The aerosol can-type ice-shaped developer according to claim 1, characterized in that, The propane-butane contains 15% propane by mass and 85% isobutane by mass. And / or, the mass ratio of the propellant to the mother liquor is 3.2:6.

8.

4. The aerosol can-type ice-shaped developer according to any one of claims 1 to 3, characterized in that, The raw materials of the ice-shaped developer include PDMS-modified titanium dioxide and ethyl acetate; the mass ratio of PDMS-modified titanium dioxide to ethyl acetate is 1:6 to 1:10; and the particle size of PDMS-modified titanium dioxide is 30 nm to 100 nm.

5. The aerosol can-type ice-shaped developer according to claim 4, characterized in that, The mass ratio of PDMS-modified titanium dioxide to ethyl acetate is 1:6 to 1:8; And / or, the particle size of PDMS-modified titanium dioxide is 50 nm to 80 nm.

6. The aerosol can-type ice-shaped developer according to claim 4, characterized in that, The raw materials of the ice-shaped developer also include a wetting and leveling agent. The mass-to-volume ratio of the PDMS-modified titanium dioxide to the wetting and leveling agent is 3:0.1 to 3:0.2, with the PDMS-modified titanium dioxide measured in grams and the wetting and leveling agent measured in milliliters.

7. The aerosol can-type ice-shaped developer according to claim 6, characterized in that, The wetting and leveling agent is a polyether-modified siloxane; And / or, the mass-to-volume ratio of the PDMS-modified titanium dioxide to the wetting and leveling agent is 3:0.1; And / or, the ethyl acetate is chromatographic grade ethyl acetate with a purity ≥99.9%.

8. The aerosol can-type ice-shaped developer according to claim 1, characterized in that, The aerosol can includes a can body, a valve cup, a valve assembly, and an external spray assembly. The external spray assembly includes an actuator and a nozzle. The valve cup is mounted on the outer edge of the can body opening, and the valve cup is sealed and fixed to the can body opening by crimping and stamping. The actuator is mounted on the top of the valve stem of the valve assembly, and pressing the actuator can drive the valve assembly to open and close. The nozzle is located on the actuator. The mother liquor and propellant are both filled in the can body.

9. The aerosol can-type ice-shaped developer according to claim 8, characterized in that, The aerosol can is also equipped with a directional guide tube, which is detachably sleeved on the outside of the nozzle of the actuator; the can body is also provided with a vibrating bead.

10. A method for manufacturing an aerosol can-type ice-shaped developer according to any one of claims 1-9, characterized in that, Includes the following steps: Step S10: Prepare ice-shaped developer; Step S20: Fill the aerosol can with ice-shaped developer and add a vibrating bead, and pre-install the valve; then fill the propellant according to the mass ratio of propellant to ice-shaped developer (3-3.5): (6.5-7), seal the can, install the actuator, and equip it with a directional conduit to obtain the finished aerosol can.

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