Nylon 66 flame-retardant anti-infrared camouflage braid and preparation method thereof

Abstract

The invention relates to the technical field of camouflage braids, in particular to a nylon 66 flame-retardant infrared-resistant camouflage braid and a preparation method thereof.The nylon 66 flame-retardant infrared-resistant camouflage braid comprises a nylon 66 camouflage braid body, a flame-retardant infrared-resistant coating and ceramic fiber paper.The nylon 66 camouflage braid body comprises flame-retardant yarn, infrared-resistant yarn and acrylic fiber yarn; the invention relates to a preparation method of a nylon 66 flame-retardant anti-infrared camouflage braid. The preparation method comprises the following steps: S1, preparing materials; s2, weaving is carried out; s3, dyeing; s4, drying and finishing; and S5, preparing the flame-retardant anti-infrared coating. According to the nylon 66 camouflage braid, infrared resistance is achieved through the anti-infrared yarn and the flame-retardant anti-infrared coating in the nylon 66 camouflage braid body, the anti-infrared effect is improved, the dyeing and printing firmness is improved through the acrylic fiber yarn in the nylon 66 camouflage braid body, flame retardance is achieved through the flame-retardant yarn and the flame-retardant anti-infrared coating in the nylon 66 camouflage braid body, and the anti-infrared effect is improved. And the safety is improved.

Description

Technical Field

[0001] The invention relates to the technical field of camouflage webbings, in particular to a nylon 66 flame-retardant and anti-infrared camouflage webbing and a preparation method thereof. Background Art

[0002] As one of the important auxiliary materials for the integration of military camouflage products, camouflage webbing is widely used in military camouflage products, such as camouflage jackets, camouflage backpacks, camouflage tactical vests, camouflage pants, camouflage caps, camouflage military shoes, etc. Camouflage webbing originated from the demand for military camouflage. With the advancement of science and technology and the changes in military strategies, camouflage webbing has experienced a development process from simple to complex, from single function to multi-function. Early camouflage webbing was mainly used for military camouflage to help soldiers better conceal themselves on the battlefield. With the advancement of materials science and textile technology, camouflage webbing has gradually developed multiple functions such as infrared protection, flame retardancy, waterproofness, and wear resistance to meet the needs of modern warfare and military activities.

[0003] However, the camouflage webbing on the market currently completely reflects infrared through the color of the fuel, and the anti-infrared effect is poor. The nylon 66 material is difficult to dye and print. The camouflage webbing after production is easy to discolor, which is not conducive to the use effect of the camouflage webbing. There is a risk of burning in a high temperature environment, which is not conducive to the durability of the camouflage webbing and affects safety. The camouflage webbing is easy to deform, which affects the flatness and aesthetics of the camouflage webbing. Therefore, those skilled in the art provide a nylon 66 flame retardant anti-infrared camouflage webbing and a preparation method thereof to solve the problems raised in the above background technology. Summary of the invention

[0004] The object of the present invention is to provide a nylon 66 flame retardant anti-infrared camouflage webbing and a preparation method thereof, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a nylon 66 flame retardant and anti-infrared camouflage webbing, comprising a nylon 66 camouflage webbing body, a flame retardant and anti-infrared coating and ceramic fiber paper, the flame retardant and anti-infrared coating being located at the outer side of the nylon 66 camouflage webbing body, the ceramic fiber paper being located at the inner side of the nylon 66 camouflage webbing body, and the nylon 66 camouflage webbing body comprising flame retardant yarn, anti-infrared yarn and acrylic fiber yarn.

[0006] As a further solution of the present invention: the diameter of the flame-retardant yarn is 0.15 mm, the diameter of the infrared-resistant yarn is 0.37 mm, and the diameter of the acrylic fiber yarn is 0.37 mm.

[0007] As a further solution of the present invention: two flame-retardant yarns are provided, one of which is composed of the flame-retardant yarn and the anti-infrared yarn as warp yarns, and the other of which is composed of the flame-retardant yarn and the acrylic fiber yarn as weft yarns.

[0008] A method for preparing nylon 66 flame retardant anti-infrared camouflage webbing, the steps are as follows:

[0009] S1. Material preparation: prepare ceramic fiber paper of corresponding width according to the width of the nylon 66 camouflage webbing body, prepare the required number of flame retardant yarn, anti-infrared yarn and acrylic fiber yarn according to the size of the nylon 66 camouflage webbing body, and prepare the required number of flame retardant and anti-infrared coatings;

[0010] S2, weaving: a flame retardant yarn and an infrared resistant yarn are twisted to make a warp yarn, and another flame retardant yarn is twisted with an acrylic fiber yarn to make a weft yarn. The warp yarn and the weft yarn are woven onto the outside of the ceramic fiber paper in a plain weave method;

[0011] S3. Staining: The staining steps are as follows:

[0012] S031: Pretreatment: Clean the nylon 66 camouflage webbing body after production to remove surface oil, impurities and water, and heat the webbing for pre-shrinkage treatment;

[0013] S032: Prepare dye solution: Mix the dye in water, add dyeing aids, prepare dye solution, adjust the pH value of the dye solution by hydrochloric acid dyeing acid, the pH value is between 4 and 7,

[0014] S033: Coloring operation: raise the temperature of the dyeing solution to 60-100°C, maintain it at the above temperature for 30-120 minutes, and print the dyeing solution onto the outside of the main body of the nylon 66 camouflage webbing;

[0015] S034: Steaming: Transfer the dyed nylon 66 camouflage webbing body to the steaming device at a temperature of 90-100°C for 15-30 minutes to remove the dyes and auxiliaries that are not firmly adsorbed;

[0016] S035: Post-treatment: Cool the steam-washed ribbon at room temperature, rinse it with clean water to remove residual dyes and chemical additives, and spray the ribbon with a color fixing agent;

[0017] S4, drying and finishing: the cleaned webbing is dried using hot air drying equipment, and the dried nylon 66 camouflage webbing body is subjected to hot pressing and shaping treatment;

[0018] S5. Prepare flame retardant and anti-infrared coating: spray the mixture of flame retardant and anti-infrared coating onto the outer side of the main body of nylon 66 camouflage webbing, with a spraying thickness of 0.3 mm.

[0019] As a further scheme of the present invention: the flame retardant yarn in S1 is composed of the following parts by weight: 85 parts of nylon 66 resin, 0.8 parts of red phosphorus, 0.3 parts of melamine polyphosphate, 0.5 parts of phenolic antioxidant, and 3 parts of silicone oil. The preparation steps of the flame retardant yarn are as follows: 85 parts of nylon 66 resin are placed in a vacuum drying oven, the vacuum drying temperature is 80-100°C, and the vacuum drying time is 12-24h, 0.8 parts of red phosphorus, 0.3 parts of melamine polyphosphate, 0.5 parts of phenolic antioxidant, and 3 parts of silicone oil are ground and refined, and then uniformly dispersed in the nylon 66 resin by a high-speed stirring method to obtain a first mixture, the first mixture is added to a screw extruder for melting, the molten first mixture is extruded through a spinneret to form fiber filaments, the fiber filaments are stretched, and the stretched yarn is shaped at a setting temperature of 180-220°C and a setting time of 30-60s.

[0020] As a further scheme of the present invention: the infrared-resistant yarn in S1 is composed of the following parts by weight: 85 parts of nylon 66 resin, 0.8 parts of titanium dioxide, 0.3 parts of polyaniline, 2 parts of dispersant, and 0.5 parts of phenolic antioxidant. The preparation steps of the infrared-resistant yarn are as follows: 85 parts of nylon 66 resin are placed in a vacuum drying oven, the vacuum drying temperature is 80-100°C, and the vacuum drying time is 12-24 hours; 0.8 parts of titanium dioxide, 0.3 parts of polyaniline, 2 parts of dispersant, and 0.5 parts of phenolic antioxidant are ground and sieved, and mixed into the nylon 66 resin to obtain a second mixture; the second mixture is added to a screw extruder for melting, the melted first mixture is extruded through a spinneret to form fiber filaments, the fiber filaments are stretched, and the stretched yarn is shaped at a setting temperature of 180-220°C and a setting time of 30-60 seconds.

[0021] As a further scheme of the present invention: the flame retardant and anti-infrared coating in S1 is composed of the following parts by weight: 71 parts of acrylic resin, 15 parts of nano oxide, 0.5 parts of titanium dioxide, 0.5 parts of polyaniline, 2 parts of dispersant, 0.8 parts of phenolic antioxidant, 0.5 parts of red phosphorus, 0.5 parts of melamine polyphosphate, and 32 parts of propylene glycol. The preparation steps of the flame retardant and anti-infrared coating are as follows: 71 parts of acrylic resin, 15 parts of nano oxide, 0.5 parts of titanium dioxide, 0.5 parts of polyaniline, 2 parts of dispersant, 0.8 parts of phenolic antioxidant, 0.5 parts of red phosphorus, 0.5 parts of melamine polyphosphate, and 32 parts of propylene glycol are put into a stirring tank and mixed to obtain a flame retardant and anti-infrared coating after mixing. The flame retardant and anti-infrared coating is applied to the outer side of the nylon 66 camouflage webbing body. After the coating is dried, the outer side of the flame retardant and anti-infrared coating is polished.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The flame-retardant and anti-infrared camouflage webbing of nylon 66 of the present invention is anti-infrared through the anti-infrared yarn and the flame-retardant and anti-infrared coating in the main body of the nylon 66 camouflage webbing, thereby improving the anti-infrared effect;

[0024] 2. Through the acrylic fiber yarn in the main body of nylon 66 camouflage webbing, the problem of difficult color printing and poor fastness of the main body of nylon 66 camouflage webbing is solved, the fastness of dyeing and printing is improved, which is beneficial to the use effect of camouflage webbing and reduces the problem of discoloration;

[0025] 3. The flame retardant yarn and flame retardant anti-infrared coating in the main body of nylon 66 camouflage webbing are used to prevent the camouflage webbing from burning and being damaged in a high temperature environment, which is beneficial to the durability of the camouflage webbing and improves safety;

[0026] 4. The ceramic fiber paper is used to support the main body of the nylon 66 camouflage webbing, thereby reducing the deformation problem of the main body of the nylon 66 camouflage webbing and ensuring the flatness and aesthetics of the camouflage webbing. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the structure of a nylon 66 flame retardant and anti-infrared camouflage webbing;

[0028] Figure 2 This is a cross-sectional view of a nylon 66 flame-retardant and anti-infrared camouflage webbing.

[0029] In the picture: 1. Nylon 66 camouflage webbing body; 2. Flame retardant and anti-infrared coating; 3. Ceramic fiber paper. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figures 1-2 In an embodiment of the present invention, a nylon 66 flame retardant and anti-infrared camouflage webbing includes a nylon 66 camouflage webbing body 1, a flame retardant and anti-infrared coating 2 and a ceramic fiber paper 3. The flame retardant and anti-infrared coating 2 is located at the outer side of the nylon 66 camouflage webbing body 1, and the ceramic fiber paper 3 is located at the inner side of the nylon 66 camouflage webbing body 1. The nylon 66 camouflage webbing body 1 includes flame retardant yarn, anti-infrared yarn and acrylic fiber yarn. The diameter of the flame retardant yarn is 0.15 mm, the diameter of the anti-infrared yarn is 0.37 mm, and the diameter of the acrylic fiber yarn is 0.37 mm. Two flame retardant yarns are provided, one flame retardant yarn and the anti-infrared yarn are used as warp yarns, and the other flame retardant yarn and the acrylic fiber yarn are used as weft yarns.

[0032] A method for preparing nylon 66 flame retardant anti-infrared camouflage webbing, the steps are as follows:

[0033] S1. Material preparation: prepare ceramic fiber paper 3 of corresponding width according to the width of nylon 66 camouflage webbing body 1; prepare required number of flame retardant yarn, anti-infrared yarn and acrylic fiber yarn according to the size of nylon 66 camouflage webbing body 1; prepare required number of flame retardant anti-infrared coating 2; the flame retardant yarn is composed of the following parts by weight: 85 parts of nylon 66 resin, 0.8 parts of red phosphorus, 0.3 parts of melamine polyphosphate, 0.5 parts of phenolic antioxidant, and 3 parts of silicone oil. The preparation steps of flame retardant yarn are as follows: place 85 parts of nylon 66 resin in a vacuum drying oven at a vacuum drying temperature of 80-100°C and a vacuum drying time of 12-24h; add 0.8 parts of red phosphorus, 0.3 parts of melamine polyphosphate, 0.5 parts of phenolic antioxidant, and 3 parts of silicone oil. Melamine polyphosphate, 0.5 parts of phenolic antioxidant, and 3 parts of silicone oil are ground and refined, and then uniformly dispersed in nylon 66 resin by high-speed stirring to obtain a first mixture, the first mixture is added into a screw extruder for melting, the melted first mixture is extruded through a spinneret to form fiber filaments, the fiber filaments are stretched, and the stretched yarn is subjected to a shaping treatment, the shaping temperature is 180-220° C., and the shaping time is 30-60 seconds. The infrared-resistant yarn is composed of the following parts by weight: 85 parts of nylon 66 resin, 0.8 parts of titanium dioxide, 0.3 parts of polyaniline, 2 parts of dispersant, and 0.5 parts of phenolic antioxidant. The preparation steps of the infrared-resistant yarn are as follows: 85 parts of nylon 66 resin, 0.8 parts of titanium dioxide, 0.3 parts of polyaniline, 2 parts of dispersant, and 0.5 parts of phenolic antioxidant. The invention discloses a flame retardant and anti-infrared coating 2, wherein the flame retardant and anti-infrared coating 2 is composed of the following parts by weight: 71 parts of acrylic resin, 15 parts of nano-oxide, and 15 parts of nano-oxide. , 0.5 parts of titanium dioxide, 0.5 parts of polyaniline, 2 parts of dispersant, 0.8 parts of phenolic antioxidant, 0.5 parts of red phosphorus, 0.5 parts of melamine polyphosphate, 32 parts of propylene glycol, the preparation steps of the flame retardant anti-infrared coating 2 are as follows: 71 parts of acrylic resin, 15 parts of nano oxides, 0.5 parts of titanium dioxide, 0.5 parts of polyaniline, 2 parts of dispersant, 0.8 parts of phenolic antioxidant, 0.5 parts of red phosphorus, 0.5 parts of melamine polyphosphate, and 32 parts of propylene glycol are put into a stirring tank and mixed to obtain a flame retardant anti-infrared coating after mixing, and the flame retardant anti-infrared coating is applied to the outer side of the nylon 66 camouflage webbing body 1. After the coating is dried, the outer side of the flame retardant anti-infrared coating 2 is polished;

[0034] S2, weaving: a flame retardant yarn and an infrared resistant yarn are twisted to make a warp yarn, and another flame retardant yarn is twisted with an acrylic fiber yarn to make a weft yarn. The warp yarn and the weft yarn are woven onto the outside of the ceramic fiber paper 3 using a plain weave method;

[0035] S3. Staining: The staining steps are as follows:

[0036] S031: Pretreatment: Clean the nylon 66 camouflage webbing body 1 to remove surface oil, impurities and water, and heat the webbing for pre-shrinkage treatment;

[0037] S032: Prepare dye solution: Mix the dye in water, add dyeing aids, prepare dye solution, adjust the pH value of the dye solution by hydrochloric acid dyeing acid, the pH value is between 4 and 7,

[0038] S033: Coloring operation: raising the temperature of the dyeing solution to 60-100°C, maintaining the temperature for 30-120 minutes, and printing the dyeing solution onto the outer side of the nylon 66 camouflage webbing body 1;

[0039] S034: Steaming: the dyed nylon 66 camouflage webbing body 1 is transferred to a steaming device at a steaming temperature of 90 to 100° C. for 15 to 30 minutes to remove the dyes and auxiliaries that are not firmly adsorbed;

[0040] S035: Post-treatment: Cool the steam-washed ribbon at room temperature, rinse it with clean water to remove residual dyes and chemical additives, and spray the ribbon with a color fixing agent;

[0041] S4, drying and finishing: drying the cleaned webbing with a hot air drying device, and performing hot pressing and shaping treatment on the dried nylon 66 camouflage webbing body 1;

[0042] S5. Prepare the flame retardant and anti-infrared coating 2: spray the mixture of the flame retardant and anti-infrared coating 2 onto the outer side of the nylon 66 camouflage webbing body 1, with a spraying thickness of 0.3 mm.

[0043] In order to better illustrate the technical effect of the present invention, the following experiments are used to illustrate:

[0044] The nylon 66 flame-retardant anti-infrared camouflage webbing prepared by the present invention is used as an example, and a camouflage webbing prepared by a coated anti-infrared camouflage webbing disclosed in the patent website (publication date: 2022-08-09, publication number: CN113389044B) is used as a comparative example;

[0045] Take out 4 camouflage ribbons prepared in the embodiment and 4 camouflage ribbons prepared in the comparative example, and divide the above camouflage ribbons into four groups, and adopt dry friction test: rub the outer side of the camouflage ribbon with white gauze, make a comparison according to the dyeing degree of the white gauze, and score it. The higher the score, the lower the decolorization rate, and the score is 1 to 10 points; anti-infrared test: irradiate the camouflage ribbon with an infrared lamp, and score it according to the transmittance. The higher the score, the better the anti-infrared effect, and the score is 1 to 10 points; flame retardant test: use a flamethrower to burn the camouflage ribbon, and score it according to the degree of damage of the camouflage ribbon. The higher the score, the better the flame retardant effect, and the score is 1 to 10 points; deformation test: rub the camouflage ribbon, unfold the camouflage ribbon after rubbing, and score it according to the flatness of the camouflage ribbon. The higher the score, the smaller the deformation, and the score is 1 to 10 points; the results are recorded in the following Table 1.

[0046] Table 1. Rating table

[0047]

[0048]

[0049] It can be seen from Table 1 that: the dry friction test score in the embodiment is higher than that in the comparison example, which shows that the decolorization rate of the camouflage webbing prepared by the present invention is lower than that of the comparison example; the anti-infrared test score in the embodiment is higher than that in the comparison example, which shows that the anti-infrared effect of the camouflage webbing prepared by the present invention is better than that of the comparison example; the flame retardant test score in the embodiment is higher than that in the comparison example, which shows that the flame retardant effect of the camouflage webbing prepared by the present invention is better than that of the comparison example; the deformation test score in the embodiment is higher than that in the comparison example, which shows that the deformation degree of the camouflage webbing prepared by the present invention is less than that of the comparison example.

[0050] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0051] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A nylon 66 flame retardant and anti-infrared camouflage webbing, comprising a nylon 66 camouflage webbing body (1), a flame retardant and anti-infrared coating (2) and ceramic fiber paper (3), characterized in that: The flame retardant and anti-infrared coating (2) is located at the outer side of the nylon 66 camouflage webbing body (1), and the ceramic fiber paper (3) is located at the inner side of the nylon 66 camouflage webbing body (1). The nylon 66 camouflage webbing body (1) includes flame retardant yarn, anti-infrared yarn and acrylic fiber yarn.

2. The nylon 66 flame retardant and anti-infrared camouflage webbing according to claim 1, characterized in that: The diameter of the flame-retardant yarn is 0.15 mm, the diameter of the infrared-resistant yarn is 0.37 mm, and the diameter of the acrylic fiber yarn is 0.37 mm.

3. The nylon 66 flame retardant and anti-infrared camouflage webbing according to claim 1, characterized in that: Two flame-retardant yarns are provided, one of which is composed of the flame-retardant yarn and the anti-infrared yarn as warp yarns, and the other of which is composed of the flame-retardant yarn and the acrylic fiber yarn as weft yarns.

4. A method for preparing the nylon 66 flame retardant and anti-infrared camouflage webbing as claimed in any one of claims 1 to 3, characterized in that: Here are the steps: S1. Material preparation: according to the width of the nylon 66 camouflage webbing body (1), prepare ceramic fiber paper (3) of corresponding width, according to the size of the nylon 66 camouflage webbing body (1), prepare the required number of flame retardant yarn, anti-infrared yarn and acrylic fiber yarn, and prepare the required number of flame retardant anti-infrared coatings (2); S2, weaving: a flame retardant yarn and an infrared resistant yarn are twisted to form a warp yarn, another flame retardant yarn and an acrylic fiber yarn are twisted to form a weft yarn, and the warp yarn and the weft yarn are woven onto the outer side of the ceramic fiber paper (3) using a plain weave method; S3. Staining: The staining steps are as follows: S031: Pretreatment: cleaning the nylon 66 camouflage webbing body (1) to remove surface oil, impurities and water, and heating the webbing to perform pre-shrinkage treatment; S032: Prepare dye solution: Mix the dye in water, add dyeing aids, prepare dye solution, adjust the pH value of the dye solution by hydrochloric acid dyeing acid, the pH value is between 4 and 7, S033: Coloring operation: raising the temperature of the dyeing solution to 60-100°C, maintaining the temperature for 30-120 minutes, and printing the dyeing solution onto the outer side of the nylon 66 camouflage webbing body (1); S034: Steaming: transferring the dyed nylon 66 camouflage webbing body (1) to a steaming device at a steaming temperature of 90 to 100° C. for 15 to 30 minutes to remove the dye and auxiliaries that are not firmly adsorbed; S035: Post-treatment: Cool the steam-washed ribbon at room temperature, rinse it with clean water to remove residual dyes and chemical additives, and spray the ribbon with a color fixing agent; S4, drying and finishing: drying the cleaned webbing with a hot air drying device, and performing hot pressing and shaping treatment on the dried nylon 66 camouflage webbing body (1); S5. Prepare a flame retardant and anti-infrared coating (2): spray the mixture of the flame retardant and anti-infrared coating (2) onto the outer side of the nylon 66 camouflage webbing body (1) with a spraying thickness of 0.3 mm.

5. The method for preparing a nylon 66 flame retardant and anti-infrared camouflage webbing according to claim 4, characterized in that: The flame retardant yarn in S1 is composed of the following parts by weight: 85 parts of nylon 66 resin, 0.8 parts of red phosphorus, 0.3 parts of melamine polyphosphate, 0.5 parts of phenolic antioxidant, and 3 parts of silicone oil. The preparation steps of the flame retardant yarn are as follows: 85 parts of nylon 66 resin are placed in a vacuum drying oven, the vacuum drying temperature is 80-100°C, and the vacuum drying time is 12-24 hours; 0.8 parts of red phosphorus, 0.3 parts of melamine polyphosphate, 0.5 parts of phenolic antioxidant, and 3 parts of silicone oil are ground and refined, and then uniformly dispersed in the nylon 66 resin by a high-speed stirring method to obtain a first mixture; the first mixture is added to a screw extruder for melting; the molten first mixture is extruded through a spinneret to form fiber filaments; the fiber filaments are stretched, and the stretched yarn is shaped at a setting temperature of 180-220°C and a setting time of 30-60 seconds.

6. The method for preparing a nylon 66 flame retardant and anti-infrared camouflage webbing according to claim 4, characterized in that: The infrared-resistant yarn in S1 is composed of the following parts by weight: 85 parts of nylon 66 resin, 0.8 parts of titanium dioxide, 0.3 parts of polyaniline, 2 parts of dispersant, and 0.5 parts of phenolic antioxidant. The preparation steps of the infrared-resistant yarn are as follows: 85 parts of nylon 66 resin are placed in a vacuum drying oven, the vacuum drying temperature is 80-100°C, and the vacuum drying time is 12-24 hours; 0.8 parts of titanium dioxide, 0.3 parts of polyaniline, 2 parts of dispersant, and 0.5 parts of phenolic antioxidant are ground and sieved, and mixed into the nylon 66 resin to obtain a second mixture; the second mixture is added to a screw extruder for melting; the melted first mixture is extruded through a spinneret to form fiber filaments; the fiber filaments are stretched, and the stretched yarn is shaped at a setting temperature of 180-220°C and a setting time of 30-60 seconds.

7. The method for preparing a nylon 66 flame retardant and anti-infrared camouflage webbing according to claim 4, characterized in that: The flame retardant and anti-infrared coating (2) in S1 is composed of the following parts by weight: 71 parts of acrylic resin, 15 parts of nano oxide, 0.5 parts of titanium dioxide, 0.5 parts of polyaniline, 2 parts of dispersant, 0.8 parts of phenolic antioxidant, 0.5 parts of red phosphorus, 0.5 parts of melamine polyphosphate, and 32 parts of propylene glycol. The preparation steps of the flame retardant and anti-infrared coating (2) are as follows: 71 parts of acrylic resin, 15 parts of nano oxide, 0.5 parts of titanium dioxide, 0.5 parts of polyaniline, 2 parts of dispersant, 0.8 parts of phenolic antioxidant, 0.5 parts of red phosphorus, 0.5 parts of melamine polyphosphate, and 32 parts of propylene glycol are put into a stirring tank and mixed to obtain a flame retardant and anti-infrared coating after mixing. The flame retardant and anti-infrared coating is applied to the outer side of the nylon 66 camouflage webbing body (1). After the coating is dried, the outer side of the flame retardant and anti-infrared coating (2) is polished.

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