High-whiteness high-ultraviolet reflectivity white camouflage coating, preparation method and application

Abstract

The application belongs to the technical field of camouflage coatings, and particularly relates to a high-whiteness high-ultraviolet reflectivity white camouflage coating, a preparation method and application. The white camouflage coating comprises a bottom coating and a surface coating. The white camouflage coating is prepared by coating the bottom coating on the upper surface of a carrier and performing drying treatment, and then coating the surface coating on the bottom coating and performing drying treatment. The bottom coating comprises water-based resin, titanium dioxide, water-based dispersant, water-based light stabilizer, water-based defoaming agent, water-based wetting agent, water-based humectant and water-based curing agent. The surface coating comprises water-based resin, aluminum-doped zinc sodium phosphate, water-based dispersant, water-based light stabilizer, water-based defoaming agent, water-based wetting agent, water-based humectant and water-based curing agent. The white camouflage coating is a completely environmentally-friendly coating. The bottom coating and the surface coating are combined to ensure that the white camouflage coating meets the technical indexes of high whiteness and high ultraviolet reflectivity.

Description

Technical Field

[0001] This invention belongs to the field of camouflage coating technology, specifically relating to a white camouflage coating with high whiteness and high ultraviolet reflectance, its preparation method, and its application. Background Technology

[0002] Snow has a high reflectivity in the ultraviolet and visible light regions, while the reflectivity of general targets against the snow background is very low. Even when covered with ordinary white camouflage cloth, they appear black under ultraviolet light, creating a clear contrast with the snow and making them easy to detect by reconnaissance equipment. Therefore, a snow-type camouflage coating is needed.

[0003] Snow camouflage coatings need to have high reflectivity in the ultraviolet and visible light regions. Not only must the camouflage coating be white in the visible light region, but it must also have a reflectivity of over 80% for ultraviolet light in order to present a color effect similar to the snow background in the ultraviolet filter and achieve the purpose of snow camouflage.

[0004] Currently, Chinese invention patent CN111254713B, entitled "A High-Whiteness, High-UV Reflectivity Snow Coating and Its Preparation Method," describes a camouflage coating with high whiteness and high UV reflectivity prepared using solvents such as magnesium oxide, whitening agents, xylene, and dimethylformamide. However, it does not mention the coating's weather resistance, and the materials used in its preparation process are somewhat toxic, making it unsuitable for use in camouflage clothing. Chinese invention patent CN109868048A, entitled "A Snow-Type Camouflage Coating and Its Preparation Method," uses xylene as a solvent, basic magnesium carbonate and zinc borate as functional fillers, and polyurethane as a resin matrix. It combines dispersants and fumed silica to create a camouflage coating with good UV stealth performance, high whiteness, and good compatibility. However, it uses toxic solvents and is also unsuitable for use in camouflage clothing.

[0005] In view of this, the inventors provide a high-whiteness, high-UV reflectance white camouflage coating, its preparation method, and its application to solve the above-mentioned technical problems. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of the prior art and propose a white camouflage coating with high whiteness and high ultraviolet reflectance, its preparation method and application. The resin and additives selected in this white camouflage coating are all water-based compounds, which will not cause harm to the human body and the environment. It is a completely environmentally friendly coating. Furthermore, it adopts a two-layer design concept. Through the composite effect of the bottom layer coating and the top layer coating, the white camouflage coating meets the technical indicators of high whiteness and high ultraviolet reflectance.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] On the one hand, the present invention provides a white camouflage coating with high whiteness and high ultraviolet reflectance, including a base coating and a top coating. The white camouflage coating is obtained by applying the base coating to the upper surface of a carrier and drying it, and then applying the top coating to the dried base coating and drying it.

[0009] The underlying coating comprises the following components in parts by weight:

[0010] The ingredients are: 40-50 parts water-based resin, 45-55 parts titanium dioxide, 1-5 parts water-based dispersant, 1-5 parts water-based light stabilizer, 0.1-0.5 parts water-based defoamer, 0.1-0.5 parts water-based wetting agent, 0.5-1 parts water-based moisturizer, and 3-8 parts water-based curing agent.

[0011] The surface coating comprises the following components in parts by weight:

[0012] The mixture contains 30-40 parts of water-based resin, 50-60 parts of aluminum-doped sodium zinc phosphate, 1-5 parts of water-based dispersant, 1-5 parts of water-based light stabilizer, 0.1-1 parts of water-based defoamer, 0.1-1 parts of water-based wetting agent, 0.5-1 parts of water-based moisturizer, and 3-8 parts of water-based curing agent.

[0013] Furthermore, the aqueous resin is an organosiloxane-modified acrylic resin.

[0014] Furthermore, the water-based curing agent is an isocyanate-based water-based curing agent or an epoxy water-based curing agent.

[0015] On the other hand, the present invention also provides a method for preparing a high-whiteness, high-ultra-reflectivity white camouflage coating, which, based on the above-mentioned high-whiteness, high-ultra-reflectivity white camouflage coating, includes the following process:

[0016] (1) Preparation of the base coat, the specific steps are as follows:

[0017] Step 1-1: Add 40-50 parts of water-based resin, 45-55 parts of titanium dioxide and 1-5 parts of water-based dispersant to a mixing container and perform the first dispersion and stirring. After stirring evenly, mixture A is obtained.

[0018] Step 2-1: Add 0.1 to 0.5 parts of water-based defoamer, 0.1 to 0.5 parts of water-based wetting agent and 0.5 to 1 part of water-based moisturizer to mixture A, and perform a second dispersion and stirring until the mixture is uniform. Then add the set amount of grinding beads and grind. After grinding is completed, filter to obtain uniformly ground mixture B.

[0019] Step 3-1: Add 1 to 5 parts of water-based light stabilizer and 3 to 8 parts of water-based curing agent to mixture B, and perform a third dispersion stirring until the mixture is uniform to obtain the base coat;

[0020] (2) Preparation of the surface coating, the specific steps are as follows:

[0021] Steps 1-2: Add 30-40 parts of water-based resin, 50-60 parts of aluminum-doped sodium zinc phosphate and 1-5 parts of water-based dispersant to a mixing container and perform the first dispersion and stirring. After stirring evenly, mixture C is obtained.

[0022] Step 2-2: Add 0.1 to 1 part of water-based defoamer, 0.1 to 1 part of water-based wetting agent and 0.5 to 1 part of water-based moisturizer to mixture C, and perform a second dispersion and stirring until the mixture is uniform. Then add the set amount of grinding beads and grind. After grinding is completed, filter to obtain mixture D.

[0023] Step 3-2: Add 1 to 5 parts of water-based light stabilizer and 3 to 8 parts of water-based curing agent to mixture D, and perform a third dispersion stirring until the mixture is uniform to obtain the surface coating.

[0024] (3) The preparation of white camouflage coating is shown in the following steps:

[0025] Steps 1-3: Apply the base coat obtained in step 3-1 onto the surface of the carrier, and then place it in an oven for drying to obtain the base coating.

[0026] Step 2-3: Apply the surface coating obtained in step 3-2 onto the base coating, and then place it in an oven for drying to obtain a white camouflage coating.

[0027] Specifically, in steps 1-3, the carrier is polyester fabric or other fabric, which is not limited here.

[0028] Furthermore, in steps 1-1 and 1-2, the parameters for the first dispersion and stirring are: stirring speed of 300 r / min to 500 r / min, and stirring time of 3 min to 10 min.

[0029] Furthermore, in steps 2-1 and 2-2, the parameters for the second dispersion and stirring are: stirring speed of 400 r / min to 700 r / min, and stirring time of 10 min to 15 min;

[0030] In step 2-1, the amount of grinding beads added is 70% to 80% of the total amount of water-based defoamer, water-based wetting agent and water-based moisturizer added to mixture A, the grinding speed is 800 r / min to 1200 r / min, and the grinding time is 60 min to 120 min.

[0031] In step 2-2, the amount of grinding beads added is 70% to 80% of the total amount of water-based defoamer, water-based wetting agent and water-based moisturizer added to mixture C, the grinding speed is 800 r / min to 1200 r / min, and the grinding time is 60 min to 120 min.

[0032] Furthermore, in steps 3-1 and 3-2, the parameters for the third dispersion and stirring are: stirring speed of 900 r / min to 1000 r / min and stirring time of 10 min to 20 min.

[0033] Furthermore, in steps 1-3 and 2-3, the parameters for the drying process are: drying temperature 80℃~120℃, drying time 5min~15min; the coating includes any one of spraying, brushing, and dipping.

[0034] Furthermore, the thickness of the bottom coating obtained in steps 1-3 is 10μm to 15μm; the thickness of the white camouflage coating obtained in steps 2-3 is 20μm to 30μm.

[0035] In another aspect, the present invention also provides the application of a white camouflage coating prepared by the preparation method of the white camouflage coating described above or the white camouflage coating with high whiteness and high ultraviolet reflectance as described above in snow camouflage, wherein the thickness of the white camouflage coating is 20μm to 30μm.

[0036] Specifically, applications include snow camouflage clothing, white camouflage clothing, snow camouflage netting, and white camouflage paint.

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] 1) This invention provides a high-whiteness, high-UV reflectance white camouflage coating. The resin and additives used in this white camouflage coating are all water-based compounds, free of harmful solvents such as benzene and formaldehyde, and heavy metals. It is non-toxic, odorless, and non-irritating, and will not harm the human body or the environment, making it a completely environmentally friendly coating. Furthermore, it adopts a two-layer design, separately constructing whiteness, UV reflectance, and low emissivity performance. The bottom layer coating uses titanium dioxide pigment, which has high whiteness and strong hiding power, meeting the whiteness performance requirements of camouflage coatings. The top layer coating uses aluminum-doped sodium zinc phosphate pigment, processed through AL... 3+ The doping of sodium zinc phosphate alters the electron distribution, resulting in high reflectivity in the ultraviolet band. Through the combined action of the bottom coating and the top coating, the white camouflage coating is guaranteed to meet the technical specifications of high whiteness and high ultraviolet reflectivity.

[0039] 2) The present invention provides a white camouflage coating with high whiteness and high UV reflectance, which uses organosiloxane modified acrylic resin. Since the bond energy of silicon-oxygen bond is greater than that of carbon-oxygen bond and carbon-carbon bond, silicon-oxygen bond is not easy to break when absorbing ultraviolet light, thus giving the polymer excellent weather resistance and anti-aging properties. Using this resin can effectively improve the weather resistance of camouflage coating and ensure that the performance of the coating does not decline over a long period of time. Detailed Implementation

[0040] Exemplary embodiments will now be described in detail. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples consistent with some aspects of the invention as detailed in the appended claims.

[0041] Example 1

[0042] This invention provides a high-whiteness, high-UV-reflectivity white camouflage coating, comprising a base coat and a top coat. The white camouflage coating is obtained by applying the base coat to the upper surface of a carrier and drying it, and then applying the top coat onto the dried base coat and drying it.

[0043] The base coat comprises the following components in parts by weight:

[0044] The mixture contains 41 parts of organosiloxane-modified acrylic resin, 48 parts of titanium dioxide, 3 parts of water-based dispersant, 2 parts of water-based light stabilizer, 0.3 parts of water-based defoamer, 0.3 parts of water-based wetting agent, 0.7 parts of water-based moisturizer, and 5 parts of isocyanate-based water-based curing agent.

[0045] The surface coating comprises the following components in parts by weight:

[0046] The mixture contains 38 parts of organosiloxane-modified acrylic resin, 53 parts of aluminum-doped zinc sodium phosphate, 1.5 parts of water-based dispersant, 1.5 parts of water-based light stabilizer, 0.5 parts of water-based defoamer, 0.5 parts of water-based wetting agent, 0.8 parts of water-based moisturizer, and 5 parts of isocyanate-based water-based curing agent.

[0047] This invention also provides a method for preparing a high-whiteness, high-UV-reflectivity white camouflage coating, based on the above-described high-whiteness, high-UV-reflectivity white camouflage coating, comprising the following steps:

[0048] (1) Preparation of the base coat, the specific steps are as follows:

[0049] Step 1-1: Add 41 parts of organosiloxane modified acrylic resin, 48 parts of titanium dioxide and 3 parts of water-based dispersant to a mixing container, and then disperse and stir at 400 r / min for 8 min. After the components in the mixing container are mixed evenly, mixture A is obtained.

[0050] Step 2-1: Add 0.3 parts of water-based defoamer, 0.3 parts of water-based wetting agent and 0.7 parts of water-based moisturizer to mixture A, then disperse and stir at 500 r / min for 10 min, then add grinding beads and grind at 900 r / min for 70 min. After grinding, filter to obtain uniformly ground mixture B.

[0051] Step 3-1: Add 2 parts of water-based light stabilizer and 5 parts of isocyanate-based water-based curing agent to mixture B, and disperse and stir at 900 r / min for 10 min to obtain the base coat of a white camouflage coating with high whiteness and high UV reflectance.

[0052] In step 2-1, the amount of the grinding bead added is 75% of the total amount of the aqueous defoamer, aqueous wetting agent and aqueous moisturizer added to mixture A.

[0053] (2) Preparation of the surface coating, the specific steps are as follows:

[0054] Steps 1-2: Add 38 parts of organosiloxane modified acrylic resin, 53 parts of aluminum-doped zinc phosphate sodium and 1.5 parts of aqueous dispersant to a mixing container, and then disperse and stir at 400 r / min for 10 min. After the components in the mixing container are mixed evenly, mixture C is obtained.

[0055] Step 2-2: Add 0.5 parts of water-based defoamer, 0.5 parts of water-based wetting agent and 0.8 parts of water-based moisturizer to mixture C, then disperse and stir at 600 r / min for 10 min, then add grinding beads and grind at 800 r / min for 60 min. After grinding, filter to obtain uniformly ground mixture D.

[0056] In step 2-2, the amount of the grinding bead added is 75% of the total amount of the aqueous defoamer, aqueous wetting agent and aqueous moisturizer added to mixture C.

[0057] Step 3-2: Add 1.5 parts of water-based light stabilizer and 5 parts of isocyanate-based water-based curing agent to mixture D, and disperse and stir at 900 r / min for 15 min to obtain a surface coating of white camouflage coating with high whiteness and high UV reflectance.

[0058] (3) The preparation of white camouflage coating is shown in the following steps:

[0059] Steps 1-3: Spray the base coating obtained in step 3-1 onto the surface of polyester fabric, and then put it in an oven to dry at 120°C for 5 minutes to obtain a base coating with a thickness of 12μm.

[0060] Steps 2-3: Spray the surface coating obtained in step 3-2 onto the base coating, then place it in an oven and dry it at 120°C for 5 minutes to obtain a white camouflage coating with a thickness of 25μm.

[0061] To illustrate the effectiveness of the present invention, the white camouflage coating prepared in this embodiment was tested as follows (as shown in Table 1):

[0062] Table 1. Test results of the white camouflage coating prepared in Example 1

[0063]

[0064]

[0065] Example 2

[0066] This invention provides a high-whiteness, high-UV-reflectivity white camouflage coating, comprising a base coat and a top coat. The white camouflage coating is obtained by applying the base coat to the upper surface of a carrier and drying it, and then applying the top coat onto the dried base coat and drying it.

[0067] The base coat comprises the following components in parts by weight:

[0068] The mixture contains 50 parts of organosiloxane-modified acrylic resin, 45 parts of titanium dioxide, 5 parts of water-based dispersant, 5 parts of water-based light stabilizer, 0.5 parts of water-based defoamer, 0.5 parts of water-based wetting agent, 0.5 parts of water-based moisturizer, and 6 parts of isocyanate-based water-based curing agent.

[0069] The surface coating comprises the following components in parts by weight:

[0070] The mixture contains 40 parts of organosiloxane-modified acrylic resin, 55 parts of aluminum-doped sodium zinc phosphate, 4 parts of water-based dispersant, 3 parts of water-based light stabilizer, 1 part of water-based defoamer, 0.8 parts of water-based wetting agent, 0.5 parts of water-based moisturizer, and 3 parts of isocyanate-based water-based curing agent.

[0071] This invention also provides a method for preparing a high-whiteness, high-UV-reflectivity white camouflage coating, based on the above-described high-whiteness, high-UV-reflectivity white camouflage coating, comprising the following steps:

[0072] (1) Preparation of the base coat, the specific steps are as follows:

[0073] Step 1-1: Add 50 parts of organosiloxane modified acrylic resin, 45 parts of titanium dioxide and 5 parts of water-based dispersant to a mixing container, and then disperse and stir at 450 r / min for 10 min. After the components in the mixing container are mixed evenly, mixture A is obtained.

[0074] Step 2-1: Add 0.5 parts of water-based defoamer, 0.5 parts of water-based wetting agent and 0.5 parts of water-based moisturizer to mixture A, then disperse and stir at 600 r / min for 10 min, then add grinding beads and grind at 900 r / min for 100 min. After grinding, filter to obtain uniformly ground mixture B.

[0075] In step 2-1, the amount of the grinding bead added is 70% of the total amount of the aqueous defoamer, aqueous wetting agent and aqueous moisturizer added to mixture A.

[0076] Step 3-1: Add 5 parts of water-based light stabilizer and 6 parts of isocyanate-based water-based curing agent to mixture B, and disperse and stir at 900 r / min for 20 min to obtain the base coat of a white camouflage coating with high whiteness and high UV reflectance.

[0077] (2) Preparation of the surface coating, the specific steps are as follows:

[0078] Steps 1-2: Add 40 parts of organosiloxane modified acrylic resin, 55 parts of aluminum-doped zinc phosphate sodium and 4 parts of water-based dispersant to a mixing container, and then disperse and stir at 500 r / min for 10 min. After the components in the mixing container are mixed evenly, mixture C is obtained.

[0079] Step 2-2: Add 1 part of water-based defoamer, 0.8 parts of water-based wetting agent and 0.5 parts of water-based moisturizer to mixture C, then disperse and stir at 500 r / min for 15 min, then add grinding beads and grind at 900 r / min for 100 min. After grinding, filter to obtain uniformly ground mixture D.

[0080] In step 2-2, the amount of the grinding bead added is 70% of the total amount of the aqueous defoamer, aqueous wetting agent and aqueous moisturizer added to mixture C.

[0081] Step 3-2: Add 3 parts of water-based light stabilizer and 3 parts of isocyanate-based water-based curing agent to mixture D, and disperse and stir at 1000 r / min for 15 min to obtain a surface coating of white camouflage coating with high whiteness and high UV reflectance.

[0082] (3) The preparation of white camouflage coating is shown in the following steps:

[0083] Steps 1-3: Spray the base coat obtained in step 3-1 onto the surface of polyester fabric, and then put it in an oven to dry at 80°C for 15 minutes to obtain a base coat with a thickness of 10μm.

[0084] Steps 2-3: Spray the surface coating obtained in step 3-2 onto the base coating, and then put it in an oven to dry at 80°C for 15 minutes to obtain a white camouflage coating with a thickness of 20μm.

[0085] To illustrate the effectiveness of the present invention, the white camouflage coating prepared in this embodiment was tested as follows (as shown in Table 2):

[0086] Table 2. Test results of the white camouflage coating prepared in Example 2

[0087]

[0088] Example 3

[0089] This invention provides a high-whiteness, high-UV-reflectivity white camouflage coating, comprising a base coat and a top coat. The white camouflage coating is obtained by applying the base coat to the upper surface of a carrier and drying it, and then applying the top coat onto the base coat and drying it.

[0090] The base coat comprises the following components in parts by weight:

[0091] The mixture contains 47 parts of organosiloxane-modified acrylic resin, 50 parts of titanium dioxide, 4 parts of water-based dispersant, 1 part of water-based light stabilizer, 0.4 parts of water-based defoamer, 0.4 parts of water-based wetting agent, 1 part of water-based moisturizer, and 4 parts of water-based epoxy resin curing agent.

[0092] The surface coating comprises the following components in parts by weight:

[0093] The mixture contains 35 parts of organosiloxane-modified acrylic resin, 60 parts of aluminum-doped sodium zinc phosphate, 5 parts of water-based dispersant, 3 parts of water-based light stabilizer, 0.8 parts of water-based defoamer, 0.7 parts of water-based wetting agent, 0.7 parts of water-based moisturizer, and 7 parts of water-based epoxy resin curing agent.

[0094] This invention also provides a method for preparing a high-whiteness, high-UV-reflectivity white camouflage coating, based on the above-described high-whiteness, high-UV-reflectivity white camouflage coating, comprising the following steps:

[0095] (1) Preparation of the base coat, the specific steps are as follows:

[0096] Step 1-1: Add 47 parts of organosiloxane modified acrylic resin, 50 parts of titanium dioxide and 4 parts of water-based dispersant to a mixing container, and then disperse and stir at 500 r / min for 10 min. After the components in the mixing container are mixed evenly, mixture A is obtained.

[0097] Step 2-1: Add 0.4 parts of water-based defoamer, 0.4 parts of water-based wetting agent and 1 part of water-based moisturizer to mixture A, then disperse and stir at 600 r / min for 15 min, then add grinding beads and grind at 1000 r / min for 120 min. After grinding, filter to obtain uniformly ground mixture B.

[0098] In step 2-1, the amount of the grinding bead added is 80% of the total amount of the aqueous defoamer, aqueous wetting agent and aqueous moisturizer added to mixture A.

[0099] Step 3-1: Add 1 part of water-based light stabilizer and 4 parts of water-based epoxy resin curing agent to mixture B, and disperse and stir at 900 r / min for 15 min to obtain the base coat of white camouflage coating with high whiteness and high UV reflectance.

[0100] (2) Preparation of the surface coating, the specific steps are as follows:

[0101] Steps 1-2: Add 35 parts of organosiloxane modified acrylic resin, 60 parts of aluminum-doped zinc phosphate sodium and 5 parts of water-based dispersant to a mixing container, and then disperse and stir at 500 r / min for 8 min. After the components in the mixing container are mixed evenly, mixture C is obtained.

[0102] Step 2-2: Add 0.8 parts of water-based defoamer, 0.7 parts of water-based wetting agent and 0.7 parts of water-based moisturizer to mixture C, then disperse and stir at 700 r / min for 10 min, then add grinding beads and grind at 1200 r / min for 90 min. After grinding, filter to obtain uniformly ground mixture D.

[0103] In step 2-2, the amount of the grinding bead added is 80% of the total amount of the aqueous defoamer, aqueous wetting agent and aqueous moisturizer added to mixture C.

[0104] Step 3-2: Add 3 parts of water-based light stabilizer and 7 parts of water-based epoxy resin curing agent to mixture D, and disperse and stir at 950 r / min for 15 min to obtain a surface coating of white camouflage coating with high whiteness and high UV reflectance.

[0105] (3) The preparation of white camouflage coating is shown in the following steps:

[0106] Steps 1-3: Spray the base coat obtained in step 3-1 onto the surface of polyester fabric, and then put it in an oven to dry at 100°C for 10 minutes to obtain a base coat with a thickness of 15μm.

[0107] Steps 2-3: Spray the surface coating obtained in step 3-2 onto the base coating, and then place it in an oven to dry at 100°C for 10 minutes to obtain a white camouflage coating with a thickness of 30μm.

[0108] To illustrate the effectiveness of the present invention, the white camouflage coating prepared in this embodiment was tested as follows (as shown in Table 3):

[0109] Table 3. Test results of the white camouflage coating prepared in Example 3

[0110]

[0111] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention.

[0112] It should be understood that the present invention is not limited to the content already described above, and various modifications and changes can be made without departing from its scope. The scope of the present invention is limited only by the appended claims.

Claims

1. A white camouflage coating with high whiteness and high ultraviolet reflectance, characterized in that, It includes a base coat and a top coat. The white camouflage coating is prepared by applying the base coat to the upper surface of the carrier and drying it, and then applying the top coat to the dried base coat and drying it. The undercoat consists of the following components in parts by weight: The ingredients are: 40-50 parts water-based resin, 45-55 parts titanium dioxide, 1-5 parts water-based dispersant, 1-5 parts water-based light stabilizer, 0.1-0.5 parts water-based defoamer, 0.1-0.5 parts water-based wetting agent, 0.5-1 parts water-based moisturizer, and 3-8 parts water-based curing agent. The surface coating is composed of the following components in parts by weight: 30-40 parts of water-based resin, 50-60 parts of aluminum-doped zinc phosphate sodium, 1-5 parts of water-based dispersant, 1-5 parts of water-based light stabilizer, 0.1-1 parts of water-based defoamer, 0.1-1 parts of water-based wetting agent, 0.5-1 parts of water-based moisturizer, and 3-8 parts of water-based curing agent. The aqueous resin is an organosiloxane-modified acrylic resin. The water-based curing agent is an isocyanate-based water-based curing agent or an epoxy water-based curing agent.

2. A method for preparing a white camouflage coating with high whiteness and high ultraviolet reflectance, characterized in that, The high whiteness and high UV reflectance white camouflage coating according to claim 1 includes the following process: (1) Preparation of the base coat, the specific steps are as follows: Step 1-1: Add 40-50 parts of water-based resin, 45-55 parts of titanium dioxide and 1-5 parts of water-based dispersant to a mixing container and perform the first dispersion and stirring. After stirring evenly, mixture A is obtained. Step 2-1: Add 0.1~0.5 parts of water-based defoamer, 0.1~0.5 parts of water-based wetting agent and 0.5~1 parts of water-based moisturizer to mixture A, and perform a second dispersion and stirring until the mixture is uniform. Then add the set amount of grinding beads and grind. After grinding is completed, filter to obtain uniformly ground mixture B. Step 3-1: Add 1-5 parts of water-based light stabilizer and 3-8 parts of water-based curing agent to mixture B, and perform a third dispersion stirring until the mixture is uniform to obtain the base coat; (2) Preparation of the surface coating, the specific steps are as follows: Steps 1-2: Add 30-40 parts of water-based resin, 50-60 parts of aluminum-doped zinc phosphate sodium and 1-5 parts of water-based dispersant to a mixing container and perform the first dispersion and stirring. After stirring evenly, mixture C is obtained. Step 2-2: Add 0.1-1 parts of water-based defoamer, 0.1-1 parts of water-based wetting agent and 0.5-1 parts of water-based moisturizer to mixture C, and perform a second dispersion and stirring until the mixture is uniform. Then add the set amount of grinding beads and grind. After grinding is completed, filter to obtain mixture D. Step 3-2: Add 1-5 parts of water-based light stabilizer and 3-8 parts of water-based curing agent to mixture D, and perform a third dispersion stirring until the mixture is uniform to obtain the surface coating. (3) The preparation of white camouflage coating is as follows: Steps 1-3: Apply the base coat obtained in step 3-1 onto the surface of the carrier, and then place it in an oven for drying to obtain the base coating. Step 2-3: Apply the surface coating obtained in step 3-2 onto the base coating, and then place it in an oven for drying to obtain a white camouflage coating.

3. The method for preparing a high-whiteness, high-UV-reflectivity white camouflage coating according to claim 2, characterized in that, In steps 1-1 and 1-2, the parameters for the first dispersion and stirring are: stirring speed 300 r / min to 500 r / min, and stirring time 3 min to 10 min.

4. The method for preparing a high-whiteness, high-UV-reflectivity white camouflage coating according to claim 2, characterized in that, In steps 2-1 and 2-2, the parameters for the second dispersion and stirring are: stirring speed 400 r / min to 700 r / min, stirring time 10 min to 15 min; In step 2-1, the amount of grinding beads added is 70% to 80% of the total amount of water-based defoamer, water-based wetting agent and water-based moisturizer added to mixture A, the grinding speed is 800 r / min to 1200 r / min, and the grinding time is 60 min to 120 min. In step 2-2, the amount of grinding beads added is 70% to 80% of the total amount of water-based defoamer, water-based wetting agent and water-based moisturizer added to mixture C, the grinding speed is 800 r / min to 1200 r / min, and the grinding time is 60 min to 120 min.

5. The method for preparing a high-whiteness, high-UV-reflectivity white camouflage coating according to claim 2, characterized in that, In steps 3-1 and 3-2, the parameters for the third dispersion and stirring are: stirring speed 900 r / min to 1000 r / min, and stirring time 10 min to 20 min.

6. The method for preparing a high-whiteness, high-UV-reflectivity white camouflage coating according to claim 2, characterized in that, In steps 1-3 and 2-3, the drying parameters are: drying temperature 80℃~120℃, drying time 5min~15min; the coating includes any one of spraying, brushing, and dipping.

7. The method for preparing a high-whiteness, high-UV-reflectivity white camouflage coating according to claim 2, characterized in that, The thickness of the bottom coating obtained in steps 1-3 is 10μm~15μm; the thickness of the white camouflage coating obtained in steps 2-3 is 20μm~30μm.

8. The application of a white camouflage coating prepared by the preparation method of the white camouflage coating as described in claim 1 or the high whiteness and high ultraviolet reflectance white camouflage coating as described in any one of claims 2 to 7 in snow camouflage, characterized in that, The thickness of the white camouflage coating is 20μm~30μm.

Images