Military tent fabric coating formula as well as preparation method and application thereof

Abstract

The invention relates to the technical field of fabrics, in particular to a military tent fabric coating formula as well as a preparation method and application thereof. The formula of the coating comprises polyphenylene sulfide (PPS) powder, 60% solid content poly PVDF emulsion, aluminum oxide (Al2O3) powder, graphene oxide (GO) nanosheets, nano-silver particles, an ultraviolet (UV) stabilizer and the balance of functional filler. The coating formula designed by the invention can achieve multiple functions of wear resistance, antibiosis, infrared stealth and environmental adaptability after being sprayed on a tent fabric, can be suitable for a military shielding system in an extreme environment, and solves the problems of single function, complex process, insufficient environmental adaptability and the like in the prior art.

Description

Technical Field

[0001] The invention relates to the technical field of fabrics, in particular to a coating formula for military tent fabrics, a preparation method and an application thereof. Background Art

[0002] Existing military tent coating technology faces significant limitations in meeting the complex demands of actual combat. A primary shortcoming is single functionality: Existing research often focuses on improving a single performance factor. For example, while some infrared stealth coatings achieve excellent emissivities as low as 0.622, they generally overlook auxiliary protective features essential for battlefield environments, such as antibacterial and wear resistance. Similarly, while some thermal insulation coatings designed to address solar overheating effectively improve thermal comfort, their designs fail to address key military indicators such as nuclear, biological, and chemical (NBC) protection and long-term mechanical durability. Process complexity and inherent defects pose another major obstacle. Typical examples include PPS / PTFE / SiC composite coatings, whose preparation relies heavily on a substrate pretreatment step that can take over 24 hours and has a narrow process window. When the amount of the key component, PTFE, exceeds 30 ml, the coating is prone to cracking and failure. Furthermore, the system's combined vacuum and ultrasonic defoaming process is inefficient, making it difficult to completely eliminate microbubbles in the slurry. This results in poor uniformity and structural weaknesses in the final coating, severely impacting its physical barrier properties. Inadequate environmental adaptability is a core issue hindering practical application: Military tent fabrics must simultaneously maintain excellent weather resistance against UV rays, temperature fluctuations, and humidity erosion, while also possessing sufficient physical strength to withstand tearing and bursting under harsh outdoor conditions. However, existing technologies often compromise one over the other, failing to effectively balance and optimize the complex and often conflicting multifunctional requirements of high stealth, strong protection, lightweight, and long life. This significantly reduces the reliability and sustained combat effectiveness of coated equipment in diverse battlefield environments. Summary of the Invention

[0003] Based on the above-mentioned problems in the background technology, the present invention proposes a coating formula for military tent fabrics. The coating formula includes the following raw materials, by mass percentage: 15-25% PPS powder, 10-20% 60% solids PVDF emulsion, 5-10% Al2O3 powder, 0.5-2% GO nanosheets, 1-3% nanosilver particles, 4-8% UV stabilizer, and the balance is functional filler. The addition of Al2O3 powder maintains wear resistance and flame retardancy while significantly reducing costs; GO nanosheets improve the material's thermal conductivity and mechanical strength.

[0004] Preferably, the UV stabilizer includes but is not limited to one of UV326, UV329, UV-P or UV-1164.

[0005] Preferably, the functional fillers include but are not limited to one or more of glass fiber, calcium carbonate, talcum powder, calcined kaolin or wollastonite. Glass fiber can enhance the skeleton, improve mechanical strength and dimensional stability, and make up for the local enhancement of GO nanosheets. Calcium carbonate or talcum powder is a low-cost volume filler that can improve processing fluidity, reduce shrinkage, and balance overall cost. Calcined kaolin improves flame retardancy and electrical insulation, and cooperates with Al2O3 powder to enhance fire resistance. The needle-like structure of wollastonite provides isotropic reinforcement and reduces the tendency of stress cracking.

[0006] Preferably, the mass percentage of glass fiber is 15-30%, the mass percentage of calcium carbonate or talcum powder is 10-25%, the mass percentage of calcined kaolin is 5-15%, and the mass percentage of wollastonite is 2-8%.

[0007] Preferably, the functional fillers further include but are not limited to one or both of a leveling agent or a defoaming agent, the mass percentage of the leveling agent added is 0.2-0.8%, and the percentage of the defoaming agent added is 0.1-0.5%.

[0008] Preferably, the leveling agent is one of polyether-modified polydimethylsiloxane, polyester-modified hydroxy silicone oil, perfluoroalkyl ethoxylate, and acrylate copolymer, and the defoaming agent is polyethylene glycol / hydrophobic silica composite or acrylate / fluorocarbon copolymer.

[0009] Preferably, a preparation method of a military tent fabric coating formula, the steps are as follows,

[0010] Step 1: Put the PPS powder, Al2O3 powder and GO nanosheets in the dispersion kettle respectively, mix the above materials at a speed of 500 revolutions per minute for 10 minutes to make the mixture uniform and sufficient;

[0011] Step 2: Add 60% solid content PVDF emulsion, nano-silver particles, UV stabilizer and functional fillers to the uniformly mixed material in step 1, increase the stirring speed of the dispersion kettle to 800 revolutions per minute, and continue mixing for 20 minutes to make each component fully homogenized to obtain a coating slurry.

[0012] Preferably, the application of a military tent fabric coating formula, the fabric coating formula is used on the military tent fabric.

[0013] Preferably, the steps of using the coating formula on the military tent fabric are as follows,

[0014] S1. The fabric was ultrasonically cleaned with anhydrous ethanol for 1 hour, then rinsed with deionized water to remove solvent impurities, and dried in a 50°C oven to constant weight. The fabric was then treated with oxygen plasma at 100 watts and an oxygen flow rate of 5 liters per minute for 5 minutes to generate active groups such as carboxyl and hydroxyl groups on the fiber surface.

[0015] S2. Spray the prepared coating slurry onto the fabric treated in step S1, first treat the fabric with hot air at 80 degrees Celsius for 15 minutes, and then perform infrared radiation at 280 degrees Celsius for 20 minutes.

[0016] Compared with the existing technology, the beneficial effects of the present invention are: 1) by adding an appropriate amount of nanosilver particles, the coating is given long-lasting antibacterial properties, and the specific proportion of aluminum oxide powder and graphene oxide work synergistically to significantly improve the wear resistance and infrared stealth performance of the coating. At the same time, sufficient UV stabilizers effectively ensure nuclear, biological and chemical protection and weather resistance; the functional filler system contains glass fiber, calcined kaolin and other ingredients, which significantly enhances the mechanical durability of the coating, so that a single coating can simultaneously meet the diversified needs of infrared stealth, antibacterial, wear resistance, nuclear, biological and chemical protection and extreme environmental stability, and completely solve the functional separation problem of the existing technology.

[0017] 2) Abandoning the costly and time-consuming traditional pretreatment steps, a fast and efficient oxygen plasma activation process is adopted to significantly improve the coating adhesion by generating active groups in situ on the fiber surface; a high-efficiency defoamer is directly added to the functional filler, and combined with an optimized high-speed homogenization and stirring process, the slurry microbubbles are completely eliminated, significantly improving the uniformity and physical barrier properties of the coating; the type and proportion of core film-forming materials are strictly selected and limited, avoiding the risk of coating cracking that is easily caused by excessive key components in existing technologies, ensuring the structural integrity and excellent adhesion of the coating.

[0018] 3) A specific combination of UV stabilizers and functional powders forms a highly efficient composite barrier, significantly enhancing the coating's ability to resist ultraviolet rays, drastic temperature changes, and humidity erosion, and comprehensively strengthening its weather resistance. The synergistic effect of the rigid skeleton material and functional fillers achieves a significant synergistic improvement in tear strength and bursting strength. The optimized high-temperature curing process forms a dense cross-linked structure, ensuring that the coating maintains excellent dimensional stability and functional durability in extreme high and low temperature environments. DETAILED DESCRIPTION

[0019] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0020] Example 1

[0021] The steps of preparing the coating formula and applying the formula are as follows:

[0022] Step 1: 20% by mass of PPS powder, 7% by mass of Al2O3 powder, and 1% by mass of GO nanosheets were added to a dispersion kettle, and the dispersion kettle was rotated at 500 rpm to mix the above materials for 10 minutes to ensure that the mixture was uniform and sufficient;

[0023] Step 2: To the mixed material in step 1, 15% by mass of a 60% solid content PVDF emulsion, 2% by mass of nanosilver particles, 6% by mass of UV326, and a functional filler are added in sequence. The mass percentages of each substance in the functional filler are 22% of glass fiber, 17% of calcium carbonate, 10% of calcined kaolin, and 2% of wollastonite. The stirring speed of the dispersion kettle is increased to 800 rpm and the mixing is continued for 20 minutes to fully homogenize the components to obtain a coating slurry.

[0024] Step 3: The fabric was ultrasonically cleaned with anhydrous ethanol for 1 hour, then rinsed with deionized water to remove solvent impurities, and dried in a 50°C oven to constant weight. The fabric was then treated with oxygen plasma at 100 watts and an oxygen flow rate of 5 liters per minute for 5 minutes to generate active groups such as carboxyl and hydroxyl groups on the fiber surface.

[0025] Step 4: Spray the prepared coating slurry onto the fabric treated in step S1, first treat the fabric with hot air at 80 degrees Celsius for 15 minutes, and then perform infrared radiation at 280 degrees Celsius for 20 minutes.

[0026] Example 2

[0027] The steps of preparing the coating formula and applying the formula are as follows:

[0028] Step 1: 15% by mass of PPS powder, 5% by mass of Al2O3 powder, and 0.5% by mass of GO nanosheets were respectively put into a dispersion kettle, and the dispersion kettle was rotated at 500 rpm to mix the above materials for 10 minutes to ensure that the mixture was uniform and sufficient;

[0029] Step 2: To the mixed material in step 1, 10% by mass of a 60% solid content PVDF emulsion, 1% by mass of nanosilver particles, 4% by mass of UV329, and a functional filler are added in sequence. The mass percentages of each substance in the functional filler are 25% of glass fiber, 20% of calcium carbonate, 15% of calcined kaolin, and 4.5% of wollastonite. The stirring speed of the dispersion kettle is increased to 800 rpm and the mixing is continued for 20 minutes to fully homogenize the components to obtain a coating slurry.

[0030] Step 3: The fabric was ultrasonically cleaned with anhydrous ethanol for 1 hour, then rinsed with deionized water to remove solvent impurities, and dried in a 50°C oven to constant weight. The fabric was then treated with oxygen plasma at 100 watts and an oxygen flow rate of 5 liters per minute for 5 minutes to generate active groups such as carboxyl and hydroxyl groups on the fiber surface.

[0031] Step 4: Spray the prepared coating slurry onto the fabric treated in step S1, first treat the fabric with hot air at 80 degrees Celsius for 15 minutes, and then perform infrared radiation at 280 degrees Celsius for 20 minutes.

[0032] Example 3

[0033] The steps of preparing the coating formula and applying the formula are as follows:

[0034] Step 1: 25% by mass of PPS powder, 10% by mass of Al2O3 powder, and 2% by mass of GO nanosheets were respectively put into a dispersion kettle, and the dispersion kettle was rotated at 500 rpm to mix the above materials for 10 minutes to ensure that the mixture was uniform and sufficient;

[0035] Step 2: To the mixed material in step 1, 20% by mass of a 60% solid content PVDF emulsion, 3% by mass of nanosilver particles, 8% by mass of UV-P, and a functional filler are added in sequence. The mass percentages of each substance in the functional filler are 15% of glass fiber, 10% of calcium carbonate, 5% of calcined kaolin, and 2% of wollastonite. The stirring speed of the dispersion kettle is increased to 800 rpm and the mixing is continued for 20 minutes to fully homogenize the components to obtain a coating slurry.

[0036] Step 3: The fabric was ultrasonically cleaned with anhydrous ethanol for 1 hour, then rinsed with deionized water to remove solvent impurities, and dried in a 50°C oven to constant weight. The fabric was then treated with oxygen plasma at 100 watts and an oxygen flow rate of 5 liters per minute for 5 minutes to generate active groups such as carboxyl and hydroxyl groups on the fiber surface.

[0037] Step 4: Spray the prepared coating slurry onto the fabric treated in step S1, first treat the fabric with hot air at 80 degrees Celsius for 15 minutes, and then perform infrared radiation at 280 degrees Celsius for 20 minutes.

[0038] Example 4

[0039] The steps of preparing the coating formula and applying the formula are as follows:

[0040] Step 1: 20% by mass of PPS powder, 7% by mass of Al2O3 powder, and 0.7% by mass of GO nanosheets were respectively put into a dispersion kettle, and the dispersion kettle was rotated at 500 rpm to mix the above materials for 10 minutes to ensure that the mixture was uniform and sufficient;

[0041] Step 2: To the mixed material in step 1, 11% by mass of a 60% solid content PVDF emulsion, 1.3% by mass of nanosilver particles, 5% by mass of UV-1164, and a functional filler were added in sequence. The mass percentages of the substances in the functional filler were 30% of glass fiber, 12% of calcium carbonate, 7% of calcined kaolin, and 6% of wollastonite. The stirring speed of the dispersion kettle was increased to 800 rpm and the mixing was continued for 20 minutes to fully homogenize the components to obtain a coating slurry.

[0042] Step 3: The fabric was ultrasonically cleaned with anhydrous ethanol for 1 hour, then rinsed with deionized water to remove solvent impurities, and dried in a 50°C oven to constant weight. The fabric was then treated with oxygen plasma at 100 watts and an oxygen flow rate of 5 liters per minute for 5 minutes to generate active groups such as carboxyl and hydroxyl groups on the fiber surface.

[0043] Step 4: Spray the prepared coating slurry onto the fabric treated in step S1, first treat the fabric with hot air at 80 degrees Celsius for 15 minutes, and then perform infrared radiation at 280 degrees Celsius for 20 minutes.

[0044] Example 5

[0045] The steps of preparing the coating formula and applying the formula are as follows:

[0046] Step 1: 18% by mass of PPS powder, 6% by mass of Al2O3 powder, and 0.8% by mass of GO nanosheets were added to a dispersion kettle, and the dispersion kettle was rotated at 500 rpm to mix the above materials for 10 minutes to ensure that the mixture was uniform and sufficient;

[0047] Step 2: To the mixed material in step 1, 10% by mass of a 60% solid content PVDF emulsion, 1.2% by mass of nanosilver particles, 6% by mass of UV-1164, and a functional filler were added in sequence. The mass percentages of the substances in the functional filler were 18% of glass fiber, 25% of calcium carbonate, 12% of calcined kaolin, and 3% of wollastonite. The stirring speed of the dispersion kettle was increased to 800 rpm and the mixing was continued for 20 minutes to fully homogenize the components to obtain a coating slurry.

[0048] Step 3: The fabric was ultrasonically cleaned with anhydrous ethanol for 1 hour, then rinsed with deionized water to remove solvent impurities, and dried in a 50°C oven to constant weight. The fabric was then treated with oxygen plasma at 100 watts and an oxygen flow rate of 5 liters per minute for 5 minutes to generate active groups such as carboxyl and hydroxyl groups on the fiber surface.

[0049] Step 4: Spray the prepared coating slurry onto the fabric treated in step S1, first treat the fabric with hot air at 80 degrees Celsius for 15 minutes, and then perform infrared radiation at 280 degrees Celsius for 20 minutes.

[0050] Example 6

[0051] The steps of preparing the coating formula and applying the formula are as follows:

[0052] Step 1: 16% by mass of PPS powder, 5% by mass of Al2O3 powder, and 1% by mass of GO nanosheets were added to a dispersion kettle, and the dispersion kettle was rotated at 500 rpm to mix the above materials for 10 minutes to ensure that the mixture was uniform and sufficient;

[0053] Step 2: To the mixed material in step 1, 10% by mass of a 60% solid content PVDF emulsion, 1% by mass of nanosilver particles, 4% by mass of UV-P, and a functional filler were added in sequence. The mass percentages of the substances in the functional filler were 27% of glass fiber, 19% of calcium carbonate, 9% of calcined kaolin, and 8% of wollastonite. The stirring speed of the dispersion kettle was increased to 800 rpm and the mixing was continued for 20 minutes to fully homogenize the components to obtain a coating slurry.

[0054] Step 3: The fabric was ultrasonically cleaned with anhydrous ethanol for 1 hour, then rinsed with deionized water to remove solvent impurities, and dried in a 50°C oven to constant weight. The fabric was then treated with oxygen plasma at 100 watts and an oxygen flow rate of 5 liters per minute for 5 minutes to generate active groups such as carboxyl and hydroxyl groups on the fiber surface.

[0055] Step 4: Spray the prepared coating slurry onto the fabric treated in step S1, first treat the fabric with hot air at 80 degrees Celsius for 15 minutes, and then perform infrared radiation at 280 degrees Celsius for 20 minutes.

[0056] Example 7

[0057] The steps of preparing the coating formula and applying the formula are as follows:

[0058] Step 1: 20% by mass of PPS powder, 7% by mass of Al2O3 powder, and 1% by mass of GO nanosheets were added to a dispersion kettle, and the dispersion kettle was rotated at 500 rpm to mix the above materials for 10 minutes to ensure that the mixture was uniform and sufficient;

[0059] Step 2: To the mixed material in step 1, 15% by mass of a 60% solid content PVDF emulsion, 2% by mass of nanosilver particles, 6% by mass of UV326, and a functional filler are added in sequence, wherein the mass percentages of each substance in the functional filler are 21.7% of glass fiber, 17% of calcium carbonate, 10% of calcined kaolin, and 2% of wollastonite, and then 0.2% by mass of a leveling agent polyether modified polydimethylsiloxane and 0.1% by mass of a defoaming agent polyethylene glycol / hydrophobic silica complex are added. The stirring speed of the dispersion kettle is increased to 800 rpm and the mixing is continued for 20 minutes to fully homogenize the components to obtain a coating slurry.

[0060] Step 3: The fabric was ultrasonically cleaned with anhydrous ethanol for 1 hour, then rinsed with deionized water to remove solvent impurities, and dried in a 50°C oven to constant weight. The fabric was then treated with oxygen plasma at 100 watts and an oxygen flow rate of 5 liters per minute for 5 minutes to generate active groups such as carboxyl and hydroxyl groups on the fiber surface.

[0061] Step 4: Spray the prepared coating slurry onto the fabric treated in step S1, first treat the fabric with hot air at 80 degrees Celsius for 15 minutes, and then perform infrared radiation at 280 degrees Celsius for 20 minutes.

[0062] Example 8

[0063] The steps of preparing the coating formula and applying the formula are as follows:

[0064] Step 1: 20% by mass of PPS powder, 7% by mass of Al2O3 powder, and 1% by mass of GO nanosheets were added to a dispersion kettle, and the dispersion kettle was rotated at 500 rpm to mix the above materials for 10 minutes to ensure that the mixture was uniform and sufficient;

[0065] Step 2: To the mixed material in step 1, 15% by mass of a 60% solid content PVDF emulsion, 2% by mass of nanosilver particles, 6% by mass of UV326, and a functional filler are added in sequence, wherein the mass percentages of each substance in the functional filler are 21% of glass fiber, 16.7% of calcium carbonate, 10% of calcined kaolin, and 2% of wollastonite, and then 0.8% by mass of a leveling agent perfluoroalkyl ethoxy compound and 0.5% by mass of a defoaming agent acrylate / fluorocarbon copolymer are added. The stirring speed of the dispersion kettle is increased to 800 rpm and the mixing is continued for 20 minutes to fully homogenize the components to obtain a coating slurry.

[0066] Step 3: The fabric was ultrasonically cleaned with anhydrous ethanol for 1 hour, then rinsed with deionized water to remove solvent impurities, and dried in a 50°C oven to constant weight. The fabric was then treated with oxygen plasma at 100 watts and an oxygen flow rate of 5 liters per minute for 5 minutes to generate active groups such as carboxyl and hydroxyl groups on the fiber surface.

[0067] Step 4: Spray the prepared coating slurry onto the fabric treated in step S1, first treat the fabric with hot air at 80 degrees Celsius for 15 minutes, and then perform infrared radiation at 280 degrees Celsius for 20 minutes.

[0068] Example 9

[0069] The steps of preparing the coating formula and applying the formula are as follows:

[0070] Step 1: 20% by mass of PPS powder, 7% by mass of Al2O3 powder, and 1% by mass of GO nanosheets were added to a dispersion kettle, and the dispersion kettle was rotated at 500 rpm to mix the above materials for 10 minutes to ensure that the mixture was uniform and sufficient;

[0071] Step 2: To the mixed material in step 1, 15% by mass of a 60% solid content PVDF emulsion, 2% by mass of nanosilver particles, 6% by mass of UV326, and a functional filler are added in sequence, wherein the mass percentages of each substance in the functional filler are 21.2% of glass fiber, 17% of calcium carbonate, 10% of calcined kaolin, and 2% of wollastonite, and then 0.5% by mass of a leveling agent acrylate copolymer and 0.3% by mass of a defoaming agent polyethylene glycol / hydrophobic silica complex are added. The stirring speed of the dispersion kettle is increased to 800 rpm and the mixing is continued for 20 minutes to fully homogenize the components to obtain a coating slurry.

[0072] Step 3: The fabric was ultrasonically cleaned with anhydrous ethanol for 1 hour, then rinsed with deionized water to remove solvent impurities, and dried in a 50°C oven to constant weight. The fabric was then treated with oxygen plasma at 100 watts and an oxygen flow rate of 5 liters per minute for 5 minutes to generate active groups such as carboxyl and hydroxyl groups on the fiber surface.

[0073] Step 4: Spray the prepared coating slurry onto the fabric treated in step S1, first treat the fabric with hot air at 80 degrees Celsius for 15 minutes, and then perform infrared radiation at 280 degrees Celsius for 20 minutes.

[0074] The above are merely preferred embodiments of the present invention. It should be noted that the above preferred embodiments should not be construed as limiting the present invention, and the scope of protection of the present invention should be determined by the scope defined in the claims. Persons skilled in the art will appreciate that improvements and modifications may be made without departing from the spirit and scope of the present invention, and such improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A coating formula for military tent fabrics, characterized by: The coating formula includes the following raw materials, calculated by mass percentage, 15-25% PPS powder, 10-20% 60% solid content PVDF emulsion, 5-10% Al2O3 powder, 0.5-2% GO nanosheets, 1-3% nanosilver particles, 4-8% UV stabilizer, and the balance is functional filler.

2. The coating formulation for military tent fabric according to claim 1, characterized in that: The UV stabilizer includes but is not limited to one of UV326, UV329, UV-P or UV-1164.

3. The coating formulation for military tent fabric according to claim 1, characterized in that: The functional filler includes but is not limited to one or more of glass fiber, calcium carbonate, talc, calcined kaolin or wollastonite.

4. The coating formulation for military tent fabric according to claim 3, characterized in that: The mass percentage of the glass fiber is 15-30%, the mass percentage of the calcium carbonate or talc is 10-25%, the mass percentage of the calcined kaolin is 5-15%, and the mass percentage of the wollastonite is 2-8%.

5. The coating formulation for military tent fabric according to claim 1, characterized in that: The functional filler further includes but is not limited to one or both of a leveling agent and a defoaming agent. The mass percentage of the leveling agent added is 0.2-0.8%, and the mass percentage of the defoaming agent added is 0.1-0.5%.

6. The coating formulation for military tent fabric according to claim 5, characterized in that: The leveling agent is one of polyether-modified polydimethylsiloxane, polyester-modified hydroxy silicone oil, perfluoroalkyl ethoxy compound and acrylate copolymer, and the defoaming agent is polyethylene glycol / hydrophobic silica composite or acrylate / fluorocarbon copolymer.

7. The method for preparing a coating formulation for military tent fabric according to any one of claims 1 to 6, characterized in that: The steps are as follows, Step 1: PPS powder, Al2O3 powder and GO nanosheets in the formula are respectively put into a dispersion kettle, and the dispersion kettle is rotated at 500 rpm to mix the above materials for 10 minutes to ensure that the mixture is uniform and sufficient; Step 2: Add 60% solid content PVDF emulsion, nanosilver particles, UV stabilizer and functional filler to the mixed material in step 1 in sequence, increase the stirring speed of the dispersion kettle to 800 rpm, and continue mixing for 20 minutes to fully homogenize the components to obtain a coating slurry.

8. The use of a coating formula for military tent fabric according to claim 1, characterized in that: The fabric coating formula is used on military tent fabrics.

9. The use of a coating formula for military tent fabrics according to claim 8, characterized in that: The steps of applying the coating formula to military tent fabrics are as follows: S1. The fabric was ultrasonically cleaned with anhydrous ethanol for 1 hour, then rinsed with deionized water to remove solvent impurities, and dried in a 50°C oven to constant weight. The fabric was then treated with oxygen plasma at 100 watts and an oxygen flow rate of 5 liters per minute for 5 minutes to generate active groups such as carboxyl and hydroxyl groups on the fiber surface. S2. Spray the prepared coating slurry onto the fabric treated in step S1, first treat the fabric with hot air at 80 degrees Celsius for 15 minutes, and then perform infrared radiation at 280 degrees Celsius for 20 minutes.