Efficient environment-friendly polyol cold fog agent and preparation method thereof

Abstract

The invention belongs to the technical field of fogging agent formulas, and discloses a high-efficiency environment-friendly polyol cold fogging agent and a preparation method thereof, and the cold fogging agent comprises the following components by mass: 10-30 wt% of a moisture absorbent, 3-10 wt% of a fogdrop stability regulator, 2-10 wt% of a fogdrop particle size optimizer, 8-28 wt% of a functional synergist, and 24-77 wt% of water. The functional synergist is prepared by compounding xylitol and glycine in a mass ratio of (30-80): (20-70). The cold fog aerosol can be efficiently atomized at normal temperature without high temperature or high pressure, and the local temperature can be reduced by 10 DEG C or above within a short time by using the aerosol in a high-temperature environment. No harmful chemical agent is used in the formula, and all the components are environment-friendly materials, so that the environment can be purified while the pollution to the environment is avoided, and the environment-friendly requirement is met. Cold fog particles formed after the aerosol is sprayed can be quickly diffused to form a large-area stable shielding layer, so that vision and infrared detection equipment of enemies can be effectively interfered.

Description

Technical Field

[0001] This invention belongs to the field of aerosol formulation technology, and in particular relates to a high-efficiency and environmentally friendly polyol cold fogging agent and its preparation method. Background Technology

[0002] Aerosols are stable dispersion systems formed by liquid or solid particles suspended in a gaseous medium, typically existing in the form of sprays, aerosols, or smoke. Due to their efficient diffusion and precise coverage, aerosols are widely used in agriculture, medicine, fire fighting, industry, and daily life.

[0003] Existing traditional aerosol products rely on volatile organic compounds (VOCs) as solvents or propellants. These compounds are released into the atmosphere during use, causing air pollution and posing potential hazards to human health and the environment. In agricultural applications, high-temperature aerosolization may also alter the physical properties of traditional aerosols, affecting their adhesion and distribution uniformity on plant surfaces, thereby reducing their effectiveness.

[0004] Besides their environmental impact and limitations in atomization effects, traditional aerosol sprays also contain flammable, explosive, or toxic components, posing significant safety risks during use. For example, some industrial aerosol sprays may contain corrosive chemicals such as strong acids and alkalis. These chemicals not only corrode equipment and pipelines, shortening their lifespan, but also pose a serious threat to the health of operators. Flammable components in traditional aerosol sprays may cause fires or explosions during use. For instance, aerosol sprays containing organic solvents may ignite rapidly upon contact with open flames or high temperatures, potentially leading to explosions. Furthermore, toxic components in traditional aerosol sprays may enter the human body through skin contact, inhalation, or ingestion, causing serious harm to human health.

[0005] To improve the atomization effect of aerosol products, Chinese patent CN116285902A discloses a low-humidification, long-lasting, and stable polyol aerosol. By introducing polyol, a thermal fogging machine atomizes the aerosol at high temperature, improving its effective shielding of visible / infrared light in low humidity environments (RH≤30%). However, it relies on high-temperature atomization, requiring heating equipment for vaporization. After high-temperature and high-pressure atomization, the ambient temperature increases, and the aerosol itself releases heat, increasing the risk of exposure as it can be detected by infrared sensors. Although the shielding performance is good, the system uses a polyoxyethylene-type nonionic surfactant, and its environmental friendliness still needs further improvement. Summary of the Invention

[0006] To overcome the shortcomings of existing technologies, this invention provides a highly efficient and environmentally friendly polyol cold fogging agent and its preparation method. This fogging agent is safe, environmentally friendly, non-toxic, exhibits high-efficiency atomization at room temperature, and has low usage risk. Under the high-frequency vibration of an ultrasonic atomizer, the fogging agent can instantly generate a large amount of dense fog that is safe for the human body and environmentally friendly. This fog has a long duration, good stability, and high masking rate. Furthermore, the fogging process does not introduce heat sources or pressurization devices, greatly reducing the risk factor. While ensuring the masking effect, it also absorbs ambient heat, reducing the possibility of being detected by enemy reconnaissance equipment. This solves the environmental impact, limited atomization effect, and safety issues existing in current fogging agent products.

[0007] The objective of this invention is achieved through the following technical solution: This invention discloses a high-efficiency and environmentally friendly polyol cooling fogging agent, comprising the following components by mass percentage: 10-30 wt% hygroscopic agent, 3-10 wt% droplet stabilizer, 2-10 wt% droplet size optimizer, 8-28 wt% functional synergist, and 24-77 wt% water. The functional synergist is a compound of xylitol and glycine in a mass ratio of 30-80:20-70.

[0008] Furthermore, the hygroscopic agent is selected from two or more of glycerol, triethylene glycol, ethylene glycol, 1,2-propanediol, and isopropanol. The hygroscopic agent serves as the humidity balancing and viscosity regulating component of the cold fogging agent, primarily used to dynamically absorb or release moisture from the environment to maintain a constant water content in the system and prevent viscosity increase and atomization difficulties due to water loss. Simultaneously, under high temperature and low humidity conditions, it further assists in cooling through a moisture absorption and heat release process, ensuring the cold fogging agent remains within its optimal atomization viscosity range, thereby synergistically improving overall cooling efficiency and stability with the functional synergist. More preferably, glycerol, triethylene glycol, ethylene glycol, 1,2-propanediol, and isopropanol are compounded in a mass ratio of 55-80:5-20:5-10:3-20:3-30.

[0009] Furthermore, the droplet stabilizer plays a crucial role in stabilizing droplet morphology in the cold fog system, preventing droplets from coalescing or deforming during spraying, and ensuring that droplets are evenly and stably distributed in the target area, thereby improving the effectiveness and durability of the cold fog agent. The droplet stabilizer is selected from two or more of polyethylene glycol-200, polyethylene glycol-400, polyethylene glycol-800, ethanol, methanol, n-butanol, acetone, ethyl acetate, and ethylene glycol amyl propionate. More preferably, polyethylene glycol-200, polyethylene glycol-400, polyethylene glycol-800, ethanol, methanol, n-butanol, acetone, ethyl acetate, and ethylene glycol amyl propionate are compounded in a mass ratio of 50-70:2-70:2-70:2-30:2-20:2-30:2-30:2-10:3-10.

[0010] Furthermore, the main function of the droplet size optimizer is to precisely control the droplet size, bringing it within an ideal range. This facilitates droplet suspension and diffusion in the air, enhancing the coverage and penetration of the cooling mist agent, and ultimately improving its overall performance. The droplet size optimizer comprises two or more of Tween-20, TX-100, TX-114, alkyl polyglucoside, and monolauryl phosphate. More preferably, Tween-20, TX-100, TX-114, alkyl polyglucoside, and monolauryl phosphate are compounded in a mass ratio of 5-50:55-80:10-80:10-20:10-20.

[0011] Furthermore, the functional synergist is a compound of xylitol and glycine in a mass ratio of 50-70:20-30. This functional synergist is the core cooling component of the cold fogging agent, primarily utilizing the synergistic effect of xylitol's endothermic dissolution and glycine's latent heat of vaporization to rapidly absorb ambient heat and induce moisture evaporation at room temperature, thereby achieving significant cooling.

[0012] Furthermore, the water refers to usable and exploitable water resources, including but not limited to natural water sources such as lakes and rivers, and artificial water sources such as tap water and purified water. Water, as the primary carrier of the cold mist agent, provides a sufficient dissolution basis for the cold mist agent, is a key medium in the atomization process, and also helps to regulate the overall concentration and flowability of the cold mist agent, ensuring that the cold mist agent can be smoothly sprayed out of the spraying equipment to form an ideal atomization effect.

[0013] Another aspect of this invention discloses a method for preparing the aforementioned high-efficiency and environmentally friendly polyol cooling mist agent, comprising: (1) Weigh the desiccant, functional synergist and water according to the mass percentage, and stir to mix thoroughly to obtain the first solution; (2) Weigh the droplet size optimizer according to the mass percentage, and stir to mix thoroughly to obtain the second solution; (3) Weigh the droplet stabilizer and the first solution by mass percentage, add them to the second solution, stir to mix thoroughly, and obtain a high-efficiency and environmentally friendly polyol cold fogging agent.

[0014] Furthermore, the stirring speed is 300-350 r / min, and the stirring time is 5-10 min.

[0015] This invention's high-efficiency, environmentally friendly polyol cold fogging agent formulation contains no volatile organic compounds (VOCs), and its main components are all environmentally friendly materials, making it environmentally friendly and in line with sustainable development requirements. The cold fogging agent can rapidly form a fog at room temperature under ultrasonic action, creating a large-area, stable shielding layer while rapidly reducing the ambient temperature, effectively interfering with enemy visual and infrared detection equipment. This is because the addition of a droplet size optimizer during ultrasonic fogging reduces the system's viscosity. The synergistic effect of Tween-20 and TX-100 can reduce the surface tension at room temperature and pressure to 40 mN·m. - ¹ This process achieves highly efficient atomization with a particle size D50 ≤ 15 µm. The added xylitol's endothermic dissolution and glycine's latent heat of vaporization absorb heat from the environment, synergistically lowering the ambient temperature and reducing the local temperature by more than 10 °C in a short time, thus avoiding detection by infrared detection equipment. Xylitol and glycine are rich in hydroxyl and amino groups, which can form a hydrogen bond network with polyols (glycerol, polyethylene glycol-200, etc.) in the hygroscopic agent, forming a large-area stable shielding layer. In addition, droplet stabilizers and Tween-20 improve the durability of the shielding layer. Tween-20, as a nonionic surfactant, forms stable micelles at the interface, preventing droplet aggregation and Ostwald ripening, thus improving the durability of the shielding layer. Droplet stabilizers prevent droplets from agglomerating or deforming during spraying. This cold fog agent exhibits excellent stability, remaining clear, transparent, and free of stratification and precipitation even after 12 months of storage at room temperature, ensuring long-term stability.

[0016] The advantages of this invention compared to existing technologies are: 1. This invention's cooling mist agent does not require high temperature or high pressure. Highly efficient atomization can be achieved at room temperature using ultrasonic atomization. The mist formation process does not rely on a heat source or pressurization device, rapidly generating fine droplets, thus avoiding safety hazards caused by high temperature or high pressure and significantly reducing usage risks. Through the synergistic effect of xylitol's endothermic dissolution and glycine's latent heat of vaporization, the ambient temperature is lowered. In high-temperature environments, using this mist agent can reduce the local temperature by more than 10°C in a short time, resulting in significant cooling.

[0017] 2. The cold fog particles formed after the cold fog agent of this invention is sprayed can spread rapidly, forming a large-area stable shielding layer, which effectively interferes with the enemy's visual and infrared detection equipment.

[0018] 3. The cold fogging agent formulation of this invention is environmentally friendly and low-cost, using no harmful chemicals. All components are environmentally friendly materials, avoiding pollution and meeting environmental protection requirements. Key components such as glycerol and polyethylene glycol are biodegradable materials, ensuring no long-term pollution to soil and water after use, thus being environmentally friendly. The main components are common and inexpensive chemicals, and the preparation process is simple, suitable for large-scale production and application. Attached Figure Description

[0019] Figure 1 The visible light shading of the cold fogging agent in Example 1 under the condition of a closed glass fog chamber at an ambient temperature of 25 °C is shown.

[0020] Figure 2 The infrared shielding of the cold fogging agent in Example 2 is shown under the conditions of a closed glass fog chamber at an ambient temperature of 25 °C.

[0021] Figure 3 The cooling effect of the cooling agent in Example 3 during fogging is shown under the condition of a closed glass fog chamber with an initial ambient temperature of 28.4 °C.

[0022] Figure 4 This is a macroscopic fog formation diagram. Detailed Implementation

[0023] The present invention will be further described below with reference to the embodiments. The embodiments described below are illustrative and not limiting, and should not be used to limit the scope of protection of the present invention.

[0024] Example 1 A method for preparing a high-efficiency and environmentally friendly polyol cooling fogging agent includes: Step 1: Weigh out 18 wt% hygroscopic agent, 12 wt% functional synergist, and 60 wt% water according to their mass percentages and add them sequentially to a beaker using a magnetic stirrer. Stir at 300 r / min for 5 min to ensure thorough mixing and prepare the first solution. The hygroscopic agent is a mixture of glycerol, triethylene glycol, ethylene glycol, 1,2-propanediol, and isopropanol in a mass ratio of 80:5:8:3:4; the functional synergist is a mixture of xylitol and glycine in a mass ratio of 70:30.

[0025] Step 2: Weigh 6 wt% of the droplet size optimizer according to its mass percentage and add it sequentially to a beaker using a magnetic stirrer. Stir at 300 r / min for 5 min to ensure thorough mixing and prepare the second solution. The droplet size optimizer is a mixture of Tween-20, TX-100, TX-114, alkyl polyglucoside, and monolauryl phosphate in a mass ratio of 10:55:10:15:10.

[0026] Step 3: Weigh 4 wt% of the droplet stabilizer and mix it with the first and second solutions. Stir at 300 r / min for 10 minutes until completely mixed to obtain a high-efficiency and environmentally friendly polyol cold fogging agent. The droplet stabilizer is a mixture of polyethylene glycol-200, polyethylene glycol-400, polyethylene glycol-800, ethanol, methanol, n-butanol, acetone, ethyl acetate, and ethylene glycol monomethyl ether in a mass ratio of 50:10:15:3:5:5:7:2:3.

[0027] Example 2 A method for preparing a high-efficiency and environmentally friendly polyol cooling fogging agent includes: Step 1: Weigh out 25 wt% hygroscopic agent, 15 wt% functional synergist, and 43 wt% water according to their respective mass percentages, and add them sequentially to a beaker using a magnetic stirrer. Stir at 300 r / min for 5 minutes to ensure thorough mixing and prepare the first solution. The hygroscopic agent is a mixture of glycerol, triethylene glycol, ethylene glycol, 1,2-propanediol, and isopropanol in a mass ratio of 70:10:10:5:5; the functional synergist is a mixture of xylitol and glycine in a mass ratio of 70:30.

[0028] Step 2: Weigh 10 wt% of the droplet size optimizer according to its mass percentage and add it sequentially to a beaker with a magnetic stirrer. Stir at 300 r / min for 5 min to ensure thorough mixing and prepare the second solution. The droplet size optimizer is a mixture of Tween-20, TX-100, TX-114, alkyl polyglucoside, and monolauryl phosphate in a mass ratio of 10:55:10:15:10.

[0029] Step 3: Weigh 7 wt% of the droplet stabilizer and mix it with the first and second solutions. Stir at 300 r / min for 10 min until completely mixed to obtain a high-efficiency and environmentally friendly polyol cold fogging agent. The droplet stabilizer is a mixture of polyethylene glycol-200, polyethylene glycol-400, polyethylene glycol-800, ethanol, methanol, n-butanol, acetone, ethyl acetate, and ethylene glycol monomethyl ether in a mass ratio of 55:2:5:2:5:16:5:8:2.

[0030] Example 3 A method for preparing a high-efficiency and environmentally friendly polyol cooling fogging agent includes: Step 1: Weigh out 30 wt% hygroscopic agent, 25 wt% functional synergist, and 30 wt% water according to their mass percentages and add them sequentially to a beaker using a magnetic stirrer. Stir at 300 r / min for 5 min to ensure thorough mixing and prepare the first solution. The hygroscopic agent is a mixture of glycerol, triethylene glycol, ethylene glycol, 1,2-propanediol, and isopropanol in a mass ratio of 60:15:8:7:10; the functional synergist is a mixture of xylitol and glycine in a mass ratio of 70:30.

[0031] Step 2: Weigh 5 wt% of the droplet size optimizer according to its mass percentage and add it sequentially to a beaker using a magnetic stirrer. Stir at 300 r / min for 5 min to ensure thorough mixing and prepare the second solution. The droplet size optimizer is a mixture of Tween-20, TX-100, TX-114, alkyl polyglucoside, and monolauryl phosphate in a mass ratio of 10:55:10:15:10.

[0032] Step 3: Weigh 10 wt% of the droplet stabilizer and mix it with the first and second solutions. Stir at 300 r / min for 10 minutes until completely mixed to obtain a high-efficiency and environmentally friendly polyol cold fogging agent. The droplet stabilizer is a mixture of polyethylene glycol-200, polyethylene glycol-400, polyethylene glycol-800, ethanol, methanol, n-butanol, acetone, ethyl acetate, and ethylene glycol monomethyl ether in a mass ratio of 50:10:15:3:5:2:5:7:3.

[0033] Comparative Example 1 The only difference from Example 1 is that no functional enhancer is added. In step (1), 18 wt% hygroscopic agent and 72 wt% water are weighed to prepare the first solution.

[0034] Comparative Example 2 The only difference from Example 1 is that the functional enhancer is xylitol.

[0035] Comparative Example 3 The only difference from Example 1 is that the functional enhancer is glycine.

[0036] Comparative Example 4 The only difference from Example 1 is that the functional synergist is a mixture of xylitol and glycine in a 50:50 mass ratio.

[0037] Comparative Example 5 The only difference from Example 1 is that the functional synergist is a mixture of xylitol and glycine in a mass ratio of 80:20.

[0038] Performance testing The following performance tests were performed on the cold fogging agents prepared in the examples and comparative examples: (1) Visible light and infrared shielding test: The formula for calculating visible light occlusion rate is η1 = 1 - τ1 = 1 - I / I0, where: η1 is the visible light occlusion rate; τ1 is the visible light transmittance; I is the transmitted illuminance of the incident light, lx; and I0 is the initial illuminance of the incident light, lx. The formula for calculating infrared occlusion rate is η2 = 1 - τ2 = (T b 4 -T a 4 ) / (T b0 4 -T a0 4 In the formula: τ2 is the infrared transmittance; T a0 The average background temperature (K; T) without smoke screen. b0 Ta is the average temperature of the light source without smoke, in K; Ta is the average temperature of the background with smoke, in K; T b Let K be the average temperature of the light source when there is smoke.

[0039] 1) Visible light blocking test: A visible light source was installed at one end of the glass fog chamber to illuminate the atomized cold fog area, and the transmittance of visible light was observed. Actual values ​​were measured with a lux meter to calculate the shading rate. The equipment used was an ultrasonic fog generator, and the fogging time was 10 minutes.

[0040] 2) Infrared shielding test: An ultrasonic fogging experiment was conducted in a closed glass fog chamber for 20 minutes.

[0041] Using a blackbody furnace as the target infrared source and an infrared thermal imager as the detection device, the area of ​​atomized cold fog is detected to observe the infrared transmission and calculate the occlusion rate.

[0042] The results of the visible light and infrared shielding tests are shown in Table 1.

[0043] Table 1

[0044] As can be seen from the data in Table 1, Examples 1, 2, and 3: 10 minutes: Visible light occlusion rates were 98%, 99%, and 97%, respectively, and infrared occlusion rates were 76%, 78%, and 75%, respectively.

[0045] 20 minutes: Visible light occlusion rate is 100% for all cases, and infrared occlusion rates are 85%, 87%, and 83% for the other three cases.

[0046] 30 minutes: Visible light occlusion rates were 87%, 87%, and 90%, respectively, and infrared occlusion rates were 68%, 70%, and 72%, respectively.

[0047] The atomized cold fog prepared in Examples 1-3 rapidly achieved a high visible light occlusion rate within 10 minutes and reached 100% visible light occlusion rate at 20 minutes, indicating that the cold fog agent has a significant effect on visible light occlusion. Furthermore, the occlusion layer exhibits high stability; even 10 minutes (30 minutes) after fogging was stopped, the visible light occlusion rate remained above 80%.

[0048] The atomized cold fog has a good shielding effect on infrared radiation, with a shielding rate of over 70%, indicating that the cold fog agent has excellent performance in infrared shielding and can be used in specific scenarios that require infrared shielding.

[0049] Comparative Examples 1-5: 10 minutes: Visible light occlusion rates were 80%, 82%, 81%, 85%, and 88%, respectively, and infrared occlusion rates were 60%, 62%, 61%, 65%, and 68%, respectively.

[0050] 20 minutes: Visible light occlusion rates were 85%, 88%, 87%, 90%, and 92%, respectively, and infrared occlusion rates were 70%, 72%, 71%, 75%, and 78%, respectively.

[0051] 30 minutes: Visible light occlusion rates were 75%, 78%, 77%, 80%, and 83%, respectively, and infrared occlusion rates were 55%, 58%, 57%, 60%, and 62%, respectively.

[0052] The shading rates of the comparative examples were generally lower than those of the examples, indicating that the synergistic effect of the functional synergists (xylitol and glycine) significantly contributed to the shading effect. The formulations in the comparative examples that did not add or used the functional synergists alone showed significantly poorer shading performance. Even 10 minutes after fogging was stopped (at 30 minutes), the shading rate decreased significantly, indicating that the stability of the shading layer was not as good as that of the examples.

[0053] (2) Test on cooling and humidification effects of the fog chamber: Fogging experiments were conducted in a closed glass fog chamber for 20 minutes. The initial temperature of the fog chamber was 28.4℃ and the initial humidity was 39.8%. After atomization began, the temperature and humidity changes inside the fog chamber were recorded every 30 seconds. The test results at 1 min, 2 min, 5 min, 10 min, and 20 min are shown in Table 2.

[0054] Table 2

[0055] The results showed that xylitol and glycine were used as functional synergists in Examples 1, 2, and 3, with a compound mass ratio of 70:30 for both. The temperature and humidity trends in these three sets of data all demonstrated good cooling and humidifying effects. Specifically, in Example 1, the temperature decreased from 27.2℃ to 16.5℃ and the humidity increased from 45.8% to 100% within 20 minutes; in Example 2, the temperature decreased from 27.0℃ to 14.8℃ and the humidity increased from 45.6% to 100%; and in Example 3, the temperature decreased from 26.9℃ to 13.7℃ and the humidity increased from 46.5% to 100%. This indicates that the synergistic effect of xylitol and glycine can effectively promote the cooling and humidifying effect of the cooling mist agent.

[0056] In Comparative Example 1, no functional synergist was added, resulting in a minimal cooling effect; the temperature only decreased from 28.2℃ to 26.5℃ within 20 minutes. Comparative Examples 2 and 3, using only xylitol or glycine respectively, also showed relatively weak cooling effects; for example, the temperature in Comparative Example 2 decreased from 27.8℃ to 23.0℃, and in Comparative Example 3 from 27.8℃ to 22.8℃. This further demonstrates the importance of the synergistic effect of xylitol and glycine in the cooling effect. Although Comparative Examples 4 and 5 also used xylitol and glycine, the different ratios resulted in varying cooling effects, suggesting that a 70:30 ratio may be the optimal synergistic ratio.

[0057] (3) Air purification test: A small air quality detector was installed in a closed glass fog chamber. The detector showed PM2.5 and PM10 values ​​of 40 and 50, respectively. An ultrasonic fog generator was used to create fog for 10 minutes, and the changes in air quality were observed. The test results are shown in Table 3.

[0058] Table 3

[0059] See macroscopic fog formation situation Figure 4 The data in Table 3 show that the fog generated by this cold fog agent can effectively improve air quality, and the PM2.5 and PM10 values ​​decreased significantly after fogging was completed.

[0060] Examples 1-3: Within 5 minutes, the values ​​of PM2.5 and PM10 decreased significantly, by 10-14 and 10-15 respectively.

[0061] Within 10 minutes, the values ​​of PM2.5 and PM10 decreased further, by 13-14 and 12-15 respectively.

[0062] These examples rapidly reduced PM2.5 and PM10 levels within 5 minutes and reached even lower levels after 10 minutes, demonstrating the significant effectiveness of the cooling fogger in air purification.

[0063] Comparative Examples 1-5: Comparative Example 1: The PM2.5 and PM10 levels decreased only slightly within 5 minutes, and PM10 even increased slightly after 10 minutes, indicating that the purification effect was not obvious.

[0064] Comparative Example 2: The PM2.5 and PM10 values ​​decreased less within 5 minutes, and there was no significant decrease in PM2.5 and PM10 values ​​after 10 minutes, indicating poor purification effect.

[0065] Comparative Example 3: The PM2.5 and PM10 levels decreased little within 5 minutes, and PM10 levels increased slightly after 10 minutes, indicating that the purification effect was not significant.

[0066] Comparative Example 4: The PM2.5 and PM10 levels decreased less within 5 minutes, and the PM10 level decreased less after 10 minutes, indicating that the purification effect was average.

[0067] Comparative Example 5: The PM2.5 and PM10 values ​​decreased little within 5 minutes, and PM10 increased slightly after 10 minutes, indicating that the purification effect was not obvious.

[0068] The results showed that the synergistic effect of xylitol and glycine in Examples 1, 2, and 3 not only demonstrated excellent performance in cooling, humidification, and visible and infrared light shielding, but also had a significant effect on air purification. In the comparative examples, the formulations without added or using the functional synergist alone showed significantly poorer purification effects, further demonstrating the importance of the synergistic effect of xylitol and glycine.

[0069] (4) Surface tension and particle size detection of cold fogging agent Table 4

[0070] Table 4 shows that the examples exhibited lower surface tension (28-32 mN·m⁻¹) and smaller particle size (8-10 µm), indicating that these formulations of cold fog agents possess good droplet formation and dispersion capabilities, contributing to improved cooling, humidification, and air purification effects. In contrast, the comparative examples showed higher surface tension (35-40 mN·m⁻¹) and larger particle size (11-15 µm), indicating that these formulations of cold fog agents performed poorly in droplet formation and dispersion, affecting their cooling, humidification, and air purification effects. The results further demonstrate the importance of the synergistic effect of functional synergists (xylitol and glycine), droplet size optimizers, and droplet stabilizers on the performance of cold fog agents.

[0071] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the inventive concept, and these all fall within the protection scope of the present invention.

Claims

1. A highly efficient and environmentally friendly polyol cooling mist agent, characterized in that, The product comprises the following components by weight percentage: 10-30 wt% hygroscopic agent, 3-10 wt% droplet stabilizer, 2-10 wt% droplet size optimizer, 8-28 wt% functional synergist, and 24-77 wt% water. The hygroscopic agent is selected from two or more of glycerol, triethylene glycol, ethylene glycol, 1,2-propanediol, and isopropanol. The droplet stabilizer is selected from two or more of polyethylene glycol-200, polyethylene glycol-400, polyethylene glycol-800, ethanol, methanol, n-butanol, acetone, ethyl acetate, and ethylene glycol amyl propionate. The droplet size optimizer is selected from two or more of Tween-20, TX-100, TX-114, alkyl polyglucoside, and monolauryl phosphate. The functional synergist is a compound of xylitol and glycine in a weight ratio of 30-80:20-70.

2. The high-efficiency and environmentally friendly polyol cooling mist agent according to claim 1, characterized in that, The hygroscopic agent is a compound of glycerol, triethylene glycol, ethylene glycol, 1,2-propanediol, and isopropanol in a mass ratio of 55-80:5-20:5-10:3-20:3-30.

3. The high-efficiency and environmentally friendly polyol cooling mist agent according to claim 1, characterized in that, The droplet stabilizer is a compound of polyethylene glycol-200, polyethylene glycol-400, polyethylene glycol-800, ethanol, methanol, n-butanol, acetone, ethyl acetate, and ethylene glycol propionate in a mass ratio of 50-70:2-70:2-70:2-30:2-20:2-30:2-30:2-10:3-10.

4. The high-efficiency and environmentally friendly polyol cooling mist agent according to claim 1, characterized in that, The droplet size optimizer is a compound of Tween-20, TX-100, TX-114, alkyl polyglucoside, and monolauryl phosphate in a mass ratio of 5-50:55-80:10-80:10-20:10-20.

5. The high-efficiency and environmentally friendly polyol cooling mist agent according to claim 1, characterized in that, The functional synergist is a compound of xylitol and glycine in a mass ratio of 50-70: 20-30.

6. The high-efficiency and environmentally friendly polyol cooling mist agent according to claim 1, characterized in that, The water is lake water, river water, tap water, or purified water.

7. A method for preparing a high-efficiency and environmentally friendly polyol cooling fogging agent as described in any one of claims 1-6, characterized in that, include: (1) Weigh the desiccant, functional synergist and water according to the mass percentage, and stir to mix thoroughly to obtain the first solution; (2) Weigh the droplet size optimizer by mass percentage and stir to mix thoroughly to prepare the second solution; (3) Weigh the droplet stabilizer and mix it with the first solution and the second solution according to the mass percentage, stir evenly, and obtain a high-efficiency and environmentally friendly polyol cold fog agent.

8. The preparation method according to claim 7, characterized in that, The stirring speed is 300-350 r / min, and the stirring time is 5-10 min.

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