Method for manufacturing a flame-retardant material simulating the spectral reflectance of snow and fabric

Abstract

The application discloses a kind of manufacturing method of flame-retardant material simulating snowfield spectral reflectance and fabric, the method comprises the following steps: making base cloth;Spectrum reflectance control agent and coating treatment agent are formulated;Spectrum reflectance control agent and coating treatment agent are sequentially coated to base cloth, and the processed flame-retardant material is obtained;The finished product flame-retardant material is obtained by processing the processed flame-retardant material;The high-tech camouflage material capable of simulating snowfield spectral reflectance can be manufactured based on magnesium fluoride, the manufactured camouflage material also has super high cutting resistance and cracking resistance, super high flame-retardant wear resistance, super high moisture and heat resistance, super high salt fog resistance and super high mould resistance, very suitable for military application, so that the method improves the diversity, camouflage and anti-detection of camouflage material, makes up for the deficiency of prior art, has very high market value and military value.

Description

Technical Field

[0001] This invention relates to the field of camouflage material manufacturing technology, and in particular to a method for manufacturing a flame-retardant material and fabric that simulates the spectral reflectance of snow. Background Technology

[0002] Currently, in military applications, infrared-resistant or anti-detection camouflage materials are mostly used to create military camouflage equipment, thereby enhancing the concealment and counter-reconnaissance capabilities of troops in combat. However, current camouflage materials are not yet suitable for all scenarios. For example, in snowy environments, the environmental wavelengths of snow itself can make existing camouflage materials detectable under the radiation or scattering of optical, thermal infrared, microwave, or electromagnetic waves. This reduces the camouflage performance of the materials and, in military applications, diminishes the concealment and counter-reconnaissance capabilities of troops in combat. Therefore, camouflage materials that simulate the spectral reflectance of snow have emerged. However, although existing camouflage materials that simulate the spectral reflectance of snow exist, they still cannot achieve high levels of camouflage performance and durability. Summary of the Invention

[0003] The present invention mainly addresses the problem that although there are existing camouflage materials that simulate the spectral reflectance of snow, these camouflage materials still cannot achieve high camouflage performance and durability.

[0004] To solve the above-mentioned technical problems, one technical solution adopted by the present invention is: a method for manufacturing a flame-retardant material that simulates the spectral reflectance of snow, comprising the following steps:

[0005] Raw material preparation steps:

[0006] Prepare the base fabric; formulate the spectral reflectance control agent and coating treatment agent;

[0007] Sequential coating steps:

[0008] The base fabric is sequentially coated with the spectral reflectance control agent and the coating treatment agent to obtain the flame-retardant material to be processed.

[0009] Processing steps:

[0010] The flame-retardant material to be processed is post-processed to obtain the finished flame-retardant material.

[0011] As an improved solution, the spectral reflectance control agent comprises: modified crystalline magnesium fluoride;

[0012] The coating agent includes: polyurethane resin, brominated flame retardant, flame retardant synergist, crosslinking agent and auxiliary solvent.

[0013] As an improved approach, the sequential coating process includes:

[0014] A primer coating is prepared by mixing the polyurethane resin, the brominated flame retardant, the flame retardant synergist, the crosslinking agent, and the auxiliary solvent according to a first ratio.

[0015] A topcoat is prepared by mixing the polyurethane resin, the modified crystalline magnesium fluoride, the crosslinking agent, and the auxiliary solvent according to a second ratio.

[0016] The base fabric is subjected to a weight-increasing coating treatment based on the primer and the topcoat to obtain the flame-retardant material to be processed.

[0017] As an improved solution, the weight-adding coating process includes:

[0018] The base fabric is treated with the aforementioned primer coating on both sides; the double-sided primer treatment increases the weight of the base fabric by 20-50 g / m². 2 At that time, the material to be coated is obtained; the material to be coated is then coated with the coating material to obtain the flame retardant material to be processed.

[0019] As an improved solution, both the first and second components are formulated in parts by weight.

[0020] The first formulation consists of: 100 parts of the polyurethane resin, 10-20 parts of the brominated flame retardant, 2-5 parts of the flame retardant synergist, 1-5 parts of the crosslinking agent, and 20-80 parts of the auxiliary solvent.

[0021] The second formulation consists of: 100 parts of the polyurethane resin, 100-150 parts of the modified crystalline magnesium fluoride, 1-5 parts of the crosslinking agent, and 20-80 parts of the auxiliary solvent.

[0022] As an improved solution, the formulation of the polyurethane resin includes: aliphatic polyurethane and aromatic polyurethane.

[0023] The formulation components of the brominated flame retardant include: decabromodiphenyl ether, decabromodiphenyl ethane, tetrabromobis(A) acid, and methyl octabromoether;

[0024] The formulation components of the flame retardant synergist include: antimony trioxide, zinc borate, zinc oxide, and layered talc.

[0025] The formulation components of the crosslinking agent include: butyl etherified melamine resin, aziridine, carbodiimide, isocyanate and trimethylolpropane adduct, and isocyanate.

[0026] The modified crystalline magnesium fluoride formulation includes: crystalline magnesium fluoride and amorphous magnesium fluoride;

[0027] The auxiliary solvent comprises toluene, xylene, ethyl acetate, and xyleneformamide.

[0028] As an improved solution, the particle size of both the crystalline magnesium fluoride and the amorphous magnesium fluoride is no greater than 8 micrometers, and the purity of both the crystalline magnesium fluoride and the amorphous magnesium fluoride is no less than 95%.

[0029] As an improved solution, the post-processing includes: printing process and testing process;

[0030] The finished flame-retardant material is white in color;

[0031] The spectral reflectance control agent corresponds to the spectral reflectance of simulated snow.

[0032] As an improved approach, the testing process includes: whiteness and spectral reflectance testing, self-extinguishing test after flame removal, mesh density testing, tear strength and breaking strength testing, color fastness and light fastness testing, and endurance testing.

[0033] The present invention also provides a fabric made from the finished flame-retardant material manufactured by the method for manufacturing a flame-retardant material simulating the spectral reflectance of snow.

[0034] The beneficial effects of this invention are:

[0035] The method for manufacturing flame-retardant materials that simulate the spectral reflectance of snow, as described in this invention, enables the formulation of a spectral reflectance control agent based on magnesium fluoride. This agent is then used to manufacture high-tech camouflage materials that can simulate the spectral reflectance of snow. The resulting camouflage materials possess superior cut and crack resistance, flame retardancy and abrasion resistance, damp heat resistance, salt spray resistance, and mold resistance, making them highly suitable for military applications. This method enhances the diversity, camouflage capabilities, and anti-detection properties of camouflage materials, overcoming the shortcomings of existing technologies and possessing extremely high market and military value.

[0036] The fabric described in this invention can simulate the spectral reflectance of snow and has extremely high cut and tear resistance, extremely high flame retardancy and abrasion resistance, extremely high resistance to damp heat, extremely high resistance to salt spray, and extremely high resistance to mold. It is very suitable for military applications, improves the diversity, camouflage and anti-detection properties of camouflage materials, makes up for the shortcomings of existing technologies, and has extremely high market value and military value. Attached Figure Description

[0037] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0038] Figure 1 This is a flowchart of the manufacturing method of the flame-retardant material simulating the spectral reflectance of snow as described in Embodiment 1 of the present invention;

[0039] Figure 2 This is a schematic diagram illustrating the specific process of manufacturing a flame-retardant material that simulates the spectral reflectance of snow, as described in Embodiment 1 of the present invention. Detailed Implementation

[0040] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby providing a clearer and more explicit definition of the scope of protection of the present invention.

[0041] In the description of this invention, it should be noted that the embodiments described in this invention are only some embodiments of this invention, not all embodiments; based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0042] In the description of this invention, it should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0043] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "spectral reflectance control agent," "coating treatment agent," "sequential coating treatment," "flame retardant material to be processed," "finished flame retardant material," "modified crystalline magnesium fluoride," "polyurethane resin," "bromine-based flame retardant," "flame retardant synergist," "bridging crosslinking agent," "auxiliary solvent," "proportioning component," "primer," "topcoat," "weight gain coating treatment," "double-sided primer treatment," "material to be topcoated," "crystalline magnesium fluoride," "amorphous magnesium fluoride," "printing treatment," "testing treatment," and "simulated snow" should be interpreted broadly. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. Example 1

[0044] This embodiment provides a method for manufacturing a flame-retardant material that simulates the spectral reflectance of snow, such as... Figure 1 and Figure 2 As shown, it includes the following steps:

[0045] S100, Raw material preparation steps, specifically including:

[0046] S110, Making the base fabric;

[0047] S120, formulation of spectral reflectance control agent and coating treatment agent;

[0048] Specifically, the spectral reflectance control agent includes: modified crystalline magnesium fluoride; the coating treatment agent includes: polyurethane resin, brominated flame retardant, flame retardant synergist, crosslinking agent and auxiliary solvent;

[0049] Specifically, in this embodiment, solvent-based aliphatic polyurethane is mainly used as the coating adhesive, modified crystalline magnesium fluoride is used as the spectral reflectance control agent, aliphatic isocyanate is used as the solid agent, and methyl octabromoether is used as the flame retardant. The main innovation in this embodiment is the use of modified crystalline magnesium fluoride as the spectral reflectance control agent, thereby simulating the spectral reflectance of snow, improving the integration of camouflage materials with the environment, and enhancing the camouflage performance of camouflage materials.

[0050] S200, the sequential coating step, specifically includes:

[0051] S210. The base fabric is sequentially coated with the spectral reflectance control agent and the coating treatment agent to obtain the flame-retardant material to be processed.

[0052] Specifically, the sequential coating process includes: mixing the polyurethane resin, the brominated flame retardant, the flame retardant synergist, the crosslinking agent, and the auxiliary solvent according to a first ratio to form a base coat; mixing the polyurethane resin, the modified crystalline magnesium fluoride, the crosslinking agent, and the auxiliary solvent according to a second ratio to form a top coat; in this embodiment, both the first and second ratio components are in parts by weight; and applying a weight-increasing coating to the base fabric based on the base coat and the top coat to obtain the flame-retardant material to be processed.

[0053] Specifically, the weight-adding coating process includes:

[0054] The base fabric is treated with the aforementioned primer coating on both sides; this double-sided primer coating means applying the primer coating to both the front and back of the base fabric, and it also increases its weight. In this embodiment, the weight of the base fabric increased by 20-50 g / m² compared to its original weight after the double-sided primer coating treatment. 2 When the material to be coated is obtained, it needs to be coated; therefore, the material to be coated is then coated with the coating material to obtain the flame retardant material to be processed.

[0055] Specifically, in this embodiment, the first proportion of the formulation is divided by weight as follows: 100 parts of the polyurethane resin, 10-20 parts of the brominated flame retardant, 2-5 parts of the flame retardant synergist, 1-5 parts of the crosslinking agent, and 20-80 parts of the auxiliary solvent; in this embodiment, the second proportion of the formulation is divided by weight as follows: 100 parts of the polyurethane resin, 100-150 parts of the modified crystalline magnesium fluoride, 1-5 parts of the crosslinking agent, and 20-80 parts of the auxiliary solvent.

[0056] Specifically, in this embodiment, the formulation components are the constituent components. Therefore, the formulation components of the polyurethane resin include: aliphatic polyurethane and aromatic polyurethane; the formulation components of the brominated flame retardant include: decabromodiphenyl ether, decabromodiphenyl ethane, tetrabromobis(A) acid, and methyl octabromoether; the formulation components of the flame retardant synergist include: antimony trioxide, zinc borate, zinc oxide, and layered talc; the formulation components of the crosslinking agent include: butylated melamine resin, aziridine, carbodiimide, isocyanate and trimethylolpropane adduct, and isocyanate; the formulation components of the modified crystalline magnesium fluoride include: crystalline magnesium fluoride. The crystalline and amorphous magnesium fluoride have particle sizes not exceeding 8 micrometers, and their purity is not less than 95%. The auxiliary solvent comprises toluene, xylene, ethyl acetate, and xyleneformamide. The formulation components of the above-mentioned preparations and materials are the same as those used in step S120 for the preparation of each preparation and material. Based on these components, the camouflage material achieves ultra-high cut and crack resistance, ultra-high flame retardancy and wear resistance, ultra-high resistance to damp heat, ultra-high resistance to salt spray, and ultra-high resistance to mold.

[0057] S300, Processing steps, specifically including:

[0058] S310. Post-process the flame-retardant material to be processed to obtain the finished flame-retardant material.

[0059] Specifically, in this embodiment, post-processing refers to the customized reprocessing of the material obtained after the main coating steps; in this embodiment, post-processing includes, but is not limited to: printing treatment on the surface of the material, other durability treatment on the surface of the material, and testing treatment on the finished material before it leaves the factory.

[0060] Specifically, in this embodiment, the testing process is the last step in the manufacturing process of the finished flame retardant material. It is used to test the processed flame retardant material to determine whether the processed flame retardant material meets the required performance.

[0061] Specifically, the testing processes include: whiteness and spectral reflectance testing, self-extinguishing test after flame removal, mesh density testing, tear strength and breaking strength testing, color fastness and light fastness testing, and endurance testing.

[0062] Specifically, the whiteness and spectral reflectance test includes: testing the color and spectral reflectance of the front and back sides of the processed flame retardant material. If the color of both sides of the processed flame retardant material meets the whiteness ≥90 and the spectral reflectance at 350nm ≥70%, then the processed flame retardant material meets the whiteness and spectral reflectance test requirements.

[0063] Specifically, the self-extinguishing test includes: testing the self-extinguishing performance of the processed flame-retardant material after it has been removed from the flame source. If the afterflame time of the processed flame-retardant material after it has been removed from the flame source is ≤5s, then the processed flame-retardant material meets the requirements of the self-extinguishing test.

[0064] Specifically, the mesh density test includes testing the mesh density of the processed flame-retardant material. If the mesh density of the processed flame-retardant material is ≤300g / m², the test is considered complete. 2 Then the processed flame-retardant material meets the mesh density requirements;

[0065] Specifically, the tear strength and breaking strength tests include: testing the tear strength and breaking strength of the processed flame retardant material. If the warp and weft tear strength of the processed flame retardant material is ≥90N and the breaking strength is ≥1600N, then the processed flame retardant material meets the tear strength and breaking strength test requirements.

[0066] Specifically, the color fastness and light fastness tests include: testing the color fastness and light fastness of the processed flame retardant material. If the warp and weft dry rubbing color fastness of the processed flame retardant material is ≥3, the wet rubbing color fastness is ≥3, and the light fastness is ≥4, then the processed flame retardant material meets the color fastness and light fastness test requirements.

[0067] Specifically, the tolerance test includes testing the tolerance of the processed flame retardant material. If the damp heat resistance of the processed flame retardant material is ≤2, the salt spray resistance is ≤2, and the mold resistance is ≤1, then the processed flame retardant material meets the tolerance test requirements.

[0068] Specifically, in this embodiment, if the processed flame-retardant material meets the test requirements for whiteness and spectral reflectance, self-extinguishing after flame removal, mesh density, tear strength and breaking strength, color fastness and light fastness, and endurance, then the processed flame-retardant material can be shipped to obtain the corresponding finished flame-retardant material; if the processed flame-retardant material does not meet the test requirements for whiteness and spectral reflectance, self-extinguishing after flame removal, mesh density, tear strength and breaking strength, color fastness and light fastness, etc. If any of the tests, including the durability test, are required, it is necessary to return to the initial step S120, re-formulate the spectral reflectance control agent and coating agent, and then use the re-formulated spectral reflectance control agent and coating agent to sequentially perform subsequent steps S200 and S300 until the final processed flame retardant material meets the test requirements for whiteness and spectral reflectance value, self-extinguishing test, mesh density test, tear strength and breaking strength test, color fastness and light fastness test, and durability test.

[0069] Specifically, in this embodiment, the finished flame retardant material is white, and the spectral reflectance of the spectral reflectance control agent is the spectral reflectance of snow in a simulated real environment. Example 2

[0070] This embodiment provides a fabric made from the finished flame-retardant material produced by the manufacturing method of a flame-retardant material that simulates the spectral reflectance of snow as described in Embodiment 1; the fabric has a white surface and can simulate the spectral reflectance of snow, while also having flame-retardant effect and excellent durability and camouflage performance.

[0071] Unlike existing technologies, the method and fabric for manufacturing flame-retardant materials that simulate the spectral reflectance of snow, as described in this application, can be used to manufacture high-tech camouflage materials that can simulate the spectral reflectance of snow. The camouflage materials manufactured also have extremely high cut and tear resistance, extremely high flame retardancy and wear resistance, extremely high resistance to damp heat, extremely high resistance to salt spray, and extremely high resistance to mold. They are very suitable for military applications, ultimately improving the diversity, camouflage, and anti-detection capabilities of camouflage materials, making up for the shortcomings of existing technologies, and possessing extremely high market and military value.

[0072] The embodiment numbers disclosed in the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0073] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A method of manufacturing a flame-retardant material simulating the spectral reflectance of snow, characterized in that, It comprises the following steps: Raw material preparation step: Making base cloth; Preparing spectral reflectivity control agent and coating treatment agent; The spectral reflectivity control agent comprises modified crystal magnesium fluoride; the coating treatment agent comprises polyurea resin, bromine-based flame retardant, flame retardant synergist, bridging crosslinking agent and auxiliary solvent; The polyurea resin comprises aliphatic polyurethane and aromatic polyurethane; The bromine-based flame retardant comprises decabromodiphenyl ether, decabromodiphenyl ethane, tetrabromobisacid A and methyl octabromo ether; The flame retardant synergist comprises antimony trioxide, zinc borate, zinc oxide and laminated talc powder; The bridging crosslinking agent comprises butyl etherified melamine resin, aziridine, carbodiimide, isocyanate and trimethylolpropane adduct, and isocyanate; The modified crystal magnesium fluoride comprises crystal magnesium fluoride and amorphous magnesium fluoride; The auxiliary solvent comprises toluene, xylene, ethyl acetate and xylene amide; Sequential coating step: The base cloth is sequentially coated with the spectral reflectivity control agent and the coating treatment agent to obtain a processed flame-retardant material; The sequential coating process comprises: mixing the polyurea resin, the bromine-based flame retardant, the flame retardant synergist, the bridging crosslinking agent and the auxiliary solvent according to a first ratio to form a primer; mixing the polyurea resin, the modified crystal magnesium fluoride, the bridging crosslinking agent and the auxiliary solvent according to a second ratio to form a topcoat; and performing weight gain coating treatment on the base cloth based on the primer and the topcoat to obtain the processed flame-retardant material; The weight coating treatment includes: using the base paint to perform positive and negative double-sided base coating treatment on the base cloth; the weight of the base cloth is increased by 20-50 g / m 2 after the positive and negative double-sided base coating treatment, obtaining a surface coating material; using the surface coating material to perform surface coating treatment on the surface coating material, obtaining the processed flame-retardant material; Processing step: The processed flame-retardant material is post-processed to obtain a finished flame-retardant material.

2. The manufacturing method of the flame-retardant material according to claim 1, wherein: The first ratio and the second ratio are both weight ratios; The first ratio comprises 100 parts of the polyurea resin, 10-20 parts of the bromine-based flame retardant, 2-5 parts of the flame retardant synergist, 1-5 parts of the bridging crosslinking agent and 20-80 parts of the auxiliary solvent; The second ratio comprises 100 parts of the polyurea resin, 100-150 parts of the modified crystal magnesium fluoride, 1-5 parts of the bridging crosslinking agent and 20-80 parts of the auxiliary solvent.

3. The manufacturing method of the flame-retardant material according to claim 1, wherein: The particle size of the crystal magnesium fluoride and the amorphous magnesium fluoride is not greater than 8 microns, and the purity of the crystal magnesium fluoride and the amorphous magnesium fluoride is not less than 95%.

4. The manufacturing method of the flame-retardant material according to claim 3, wherein: The post-processing comprises printing and testing; The finished flame-retardant material is white; The spectral reflectivity of the spectral reflectivity control agent is the spectral reflectivity of simulated snow.

5. The method of claim 4, wherein the method further comprises: The test process includes: whiteness and spectral reflectance test, off-fire self-extinguishing test, mesh density test, tear strength and breaking strength test, color fastness and light fastness test, and resistance test.

6. A fabric characterized in that, The fabric is made of the finished flame-retardant material manufactured by the method of any one of claims 1-5.

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