Nylon 6 anti-infrared camouflage braid and preparation method thereof

Abstract

The invention relates to the technical field of camouflage fabrics, and discloses a nylon 6 anti-infrared camouflage braid which is formed by weaving high-strength flame-retardant nylon 6 fibers into a braid and then dyeing and printing the braid. Wherein the high-strength flame-retardant nylon 6 fiber is prepared by blending and extruding nylon 6 particles, polyphenyl ether, a flame retardant, a compatibilizer and organic modified montmorillonite, and carrying out wire drawing and spinning; the invention further discloses a preparation method of the nylon 6 anti-infrared camouflage braid. The preparation method comprises the following steps: S1, braid weaving; s2, braid dyeing; s3, fixing the color of the braid; s4, printing the braid; s5, performing high-temperature ageing; s6, waterproof shaping. The nylon 6 anti-infrared camouflage braid prepared by the invention has the characteristics of better dye uptake, fixation rate, leveling property and shear stiffness, difficulty in decoloring and high strength and stiffness, and has excellent anti-infrared capability.

Description

Technical Field

[0001] The invention relates to the technical field of camouflage fabrics, in particular to a nylon 6 infrared-proof camouflage webbing and a preparation method thereof. Background Art

[0002] Colorful printed fabrics are mainly used for military camouflage clothing and tents. In order to facilitate camouflage and concealment, the camouflage color should be similar and close to the surrounding environment. However, with the advancement of science and technology, high-tech reconnaissance methods are increasingly used in the military, and this ordinary camouflage color designed according to the surrounding environment can no longer achieve good camouflage. Among them, the use of infrared reconnaissance can break the general camouflage effect. Therefore, anti-infrared camouflage printing has been developed for anti-infrared reconnaissance. Long 6 filaments and fabrics have many excellent properties such as high tensile strength, light weight, wear resistance, and comfortable wearing, so they are used in the camouflage field.

[0003] A Chinese patent discloses an infrared-proof camouflage webbing and its processing technology (authorization announcement number CN113338056B). The patented technology uses printing paste and infrared-proof dye as printing paste, and uses colorants instead of ink. Through printing, coloring, color fixing and other processes, the coloring is performed after dyeing to achieve a one-time formation of camouflage patterns, which greatly simplifies the production process of camouflage webbing, fills the gap in narrow-width printing technology, reduces production costs, and is suitable for large-scale application and production. At the same time, in the steps of dyeing the base color and printing, by adjusting the composition and proportion of the infrared-proof functional dye, the camouflage webbing obtained has good infrared-proof function, good camouflage effect under invisible light, and plays a good hiding and confusing role, but its quality performance is not good, and the infrared-proof performance is not excellent enough. Summary of the invention

[0004] The object of the present invention is to provide a nylon 6 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 object, the present invention provides the following technical solutions:

[0006] A nylon 6 infrared-proof camouflage webbing is formed by weaving high-strength flame-retardant nylon 6 fibers into a webbing, then dyeing and printing, to form the nylon 6 infrared-proof camouflage webbing; wherein the high-strength flame-retardant nylon 6 fibers are extruded by blending nylon 6 particles, polyphenylene ether, flame retardant, compatibilizer and organic modified montmorillonite, and then drawn and woven;

[0007] The mass ratio of the nylon 6 particles, polyphenylene ether, flame retardant, compatibilizer and organic modified montmorillonite is (75-85): (6-10): (3-5): (2-4): (2-4).

[0008] As a further solution of the present invention: the flame retardant is one or more of melamine cyanurate, brominated styrene polymer, decabromodiphenyl ether, decabromodiphenoxyethane, and ammonium polyphosphate; and the compatibilizer is styrene-maleic anhydride copolymer.

[0009] A method for preparing nylon 6 infrared-proof camouflage webbing comprises the following steps:

[0010] S1. Weaving of webbing: nylon 6 particles, polyphenylene ether, flame retardant, compatibilizer and organic modified montmorillonite are blended and extruded according to the mass ratio of (75-85): (6-10): (3-5): (2-4): (2-4), and then drawn to form high-strength flame-retardant nylon 6 fibers, which are then spun into high-strength flame-retardant nylon 6 yarns, and then woven into webbing; the linear density of the high-strength flame-retardant nylon 6 yarn is set according to design requirements, such as the linear density of 10D, 15D, 20D, and 30D; the warp density and weft density of the webbing are set according to design requirements, such as the warp yarn linear density of the webbing is 20D, the weft yarn linear density is 20D, the warp density is / 210 strands / 10cm, and the weft density is 160 strands / 10cm;

[0011] S2, ribbon dyeing: after the dyeing solution is heated to 55-60°C, the ribbon is put into the solution at a bath ratio of 1:(12-15); then the temperature is raised to 120°C at a rate of 2-3°C / min, and the temperature is kept for 30-50min; after the temperature is cooled to room temperature, the ribbon is taken out, washed and dried;

[0012] S3, ribbon color fixing: After heating the color fixing solution to 65-70℃, put the ribbon in again according to the bath ratio of 1:(12-15), and keep it warm for 25-30min; after cooling down to room temperature, take out the ribbon, wash and dry it;

[0013] S4, ribbon printing: use a printing machine to print printing dyes on the ribbon to form camouflage colors, such as woodland camouflage, raindrop camouflage, desert camouflage, tiger camouflage, composite camouflage; and dry at 120-125℃;

[0014] S5. High temperature steaming: Steam the printed ribbon in saturated steam at a pressure of 0.5-0.6 MPa and a temperature of 185-190°C for 8-10 minutes; then clean and dry it;

[0015] S6. Waterproof setting: Immerse the webbing in a waterproof setting liquid, and perform immersion rolling at 190-200°C, and then wash and dry to obtain the nylon 6 infrared-proof camouflage webbing.

[0016] As a further solution of the present invention: in the step S2, the dyeing solution includes an acid dye, a non-ionic penetrant, an acid leveling agent, glacial acetic acid, and deionized water, wherein the mass ratio of the acid dye, the non-ionic penetrant, the acid leveling agent, and the deionized water is (2.5-3.5): (3-5): (8-10): 100, and the pH value of the dyeing solution is adjusted to 3-6 with glacial acetic acid.

[0017] As a further scheme of the present invention: in the step S4, the printing dye includes paste, shilin dye, disperse dye, anti-infrared agent, citric acid, carbon black, adhesive and deionized water, wherein the mass ratio of the printing dye including paste, shilin dye, disperse dye, anti-infrared agent, carbon black, adhesive and deionized water is (20-30): (10-15): (2-3): (3-5): (1-2): (2-4): 100; and citric acid is used to adjust the pH value of the printing dye to 4-5.

[0018] As a further solution of the present invention: the paste is composed of starch and sodium alginate in a mass ratio of (2-3):100; the Shihlin dye can be Shihlin brown, Shihlin black, Shihlin green, Shihlin yellow, and the disperse dye can be disperse black, disperse blue, disperse yellow brown, disperse gray.

[0019] As a further solution of the present invention: in the step S6, the waterproof setting liquid includes a waterproof finishing agent, a washable resin, a catalyst and deionized water, and the mass ratio thereof is (3-4): (1-1.5): (0.5-1): 100; wherein the catalyst is one of dibutyl stannate and zinc stearic acid; the waterproof finishing agent is one of an alkane long-chain waterproof finishing agent, a silicone waterproof finishing agent, a fluorocarbon waterproof finishing agent, and a fluorine-free waterproofing agent.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The invention weaves high-strength flame-retardant nylon 6 fibers into a webbing, and then dyes and prints the webbing to form a nylon 6 infrared-proof camouflage webbing. The prepared nylon 6 infrared-proof camouflage webbing has good dyeing rate, color fixation rate, level dyeing and shear stiffness, is not easy to decolorize, has high strength and stiffness, and has excellent infrared-proof capability. DETAILED DESCRIPTION

[0022] Example 1

[0023] In an embodiment of the present invention, a nylon 6 infrared-proof camouflage webbing is formed by weaving high-strength flame-retardant nylon 6 fibers into a webbing, and then dyeing and printing to form the nylon 6 infrared-proof camouflage webbing; wherein the high-strength flame-retardant nylon 6 fibers are extruded by blending nylon 6 particles, polyphenylene ether, melamine cyanurate, styrene-maleic anhydride copolymer and organically modified montmorillonite, and are drawn and woven; the mass ratio of nylon 6 particles, polyphenylene ether, flame retardant, compatibilizer and organically modified montmorillonite is 75:6:3:2:4.

[0024] A method for preparing nylon 6 infrared-proof camouflage webbing comprises the following steps:

[0025] S1. Ribbon weaving: nylon 6 particles, polyphenylene ether, melamine cyanurate, styrene-maleic anhydride copolymer and organic modified montmorillonite are blended and extruded in a mass ratio of 75:6:3:2:4, and drawn to form high-strength flame-retardant nylon 6 fibers, which are then woven into high-strength flame-retardant nylon 6 yarns, and then woven into ribbons;

[0026] S2, ribbon dyeing: after the dyeing solution is heated to 55°C, the ribbon is added according to the bath ratio of 1:12; then the temperature is raised to 120°C at a rate of 2°C / min and kept warm for 30 minutes; after the ribbon is cooled to room temperature, the ribbon is taken out, washed and dried; wherein the mass ratio of the acid dye, non-ionic penetrant, acid leveling agent and deionized water in the dyeing solution is 2.5:3:8:100, and the pH value of the dyeing solution is adjusted to 3 with glacial acetic acid;

[0027] S3, ribbon color fixing: After heating the color fixing solution to 65°C, put the ribbon in again according to the bath ratio of 1:12 and keep it warm for 25 minutes; after cooling it down to room temperature, take out the ribbon, wash it and dry it;

[0028] S4, ribbon printing: using a printing machine to print printing dyes on the ribbons to form camouflage colors, and drying at 120°C; wherein the mass ratio of starch, sodium alginate, Shilin dyes, disperse dyes, anti-infrared agents, carbon black, adhesives and deionized water in the printing dyes is 19.5:0.5:10:2:3:1:2:100; and citric acid is used to adjust the pH value of the printing dyes to 4;

[0029] S5. High temperature steaming: Steam the printed ribbon in saturated steam at a pressure of 0.5MPa and a temperature of 185℃ for 10min; then clean it and dry it;

[0030] S6. Waterproof setting: immerse the webbing into the waterproof setting liquid, and perform immersion rolling at 190°C, wash and dry to obtain the nylon 6 infrared-proof camouflage webbing; wherein the mass ratio of the alkane long-chain waterproof finishing agent, washable resin, dibutyl stannate and deionized water in the waterproof setting liquid is 3:1:0.5:100.

[0031] Example 2

[0032] In an embodiment of the present invention, a nylon 6 infrared-proof camouflage webbing is formed by weaving high-strength flame-retardant nylon 6 fibers into a webbing, and then dyeing and printing them to form the nylon 6 infrared-proof camouflage webbing; wherein the high-strength flame-retardant nylon 6 fibers are extruded by blending nylon 6 particles, polyphenylene ether, brominated styrene polymer, styrene-maleic anhydride copolymer and organically modified montmorillonite, and are drawn and woven; the mass ratio of nylon 6 particles, polyphenylene ether, flame retardant, compatibilizer and organically modified montmorillonite is 80:8:4:3:3.

[0033] A method for preparing nylon 6 infrared-proof camouflage webbing comprises the following steps:

[0034] S1. Ribbon weaving: nylon 6 particles, polyphenylene ether, brominated styrene polymer, styrene-maleic anhydride copolymer and organic modified montmorillonite are blended and extruded in a mass ratio of 80:8:4:3:3, and drawn to form high-strength flame-retardant nylon 6 fibers, which are then woven into high-strength flame-retardant nylon 6 yarns, and then woven into ribbons;

[0035] S2, ribbon dyeing: after the dyeing solution is heated to 58°C, the ribbon is put into the solution at a bath ratio of 1:14; then the temperature is raised to 120°C at a rate of 2.5°C / min and kept at this temperature for 40 minutes; after the ribbon is cooled to room temperature, the ribbon is taken out, washed and dried; wherein the mass ratio of the acid dye, non-ionic penetrant, acid leveling agent and deionized water in the dyeing solution is 3:4:9:100, and the pH value of the dyeing solution is adjusted to 4 with glacial acetic acid;

[0036] S3, ribbon color fixing: After heating the color fixing solution to 70℃, put the ribbon in again according to the bath ratio of 1:14 and keep it warm for 28 minutes; after cooling down to room temperature, take out the ribbon, wash and dry it;

[0037] S4, ribbon printing: using a printing machine to print printing dyes on the ribbons to form camouflage colors; and drying at 122°C; wherein the mass ratio of starch, sodium alginate, Shilin dyes, disperse dyes, anti-infrared agents, carbon black, adhesives and deionized water in the printing dyes is 24:0.5:12:2.5:4:1.5:3:100; and citric acid is used to adjust the pH value of the printing dyes to 4;

[0038] S5. High temperature steaming: Steam the printed ribbon in saturated steam at a pressure of 0.55 MPa and a temperature of 188°C for 9 minutes; then clean it and dry it;

[0039] S6. Waterproof setting: immerse the webbing into the waterproof setting liquid, and perform immersion rolling at 195°C, wash and dry it to obtain the nylon 6 infrared-proof camouflage webbing; wherein the mass ratio of the silicone waterproof finishing agent, washable resin, zinc stearic acid and deionized water in the waterproof setting liquid is 3.5:1.2:0.8:100.

[0040] Example 3

[0041] In an embodiment of the present invention, a nylon 6 infrared-proof camouflage webbing is formed by weaving high-strength flame-retardant nylon 6 fibers into a webbing, and then dyeing and printing them to form the nylon 6 infrared-proof camouflage webbing; wherein the high-strength flame-retardant nylon 6 fibers are extruded by blending nylon 6 particles, polyphenylene ether, decabromodiphenyl ether, styrene-maleic anhydride copolymer and organically modified montmorillonite, and are drawn and woven; the mass ratio of nylon 6 particles, polyphenylene ether, flame retardant, compatibilizer and organically modified montmorillonite is 85:10:5:4:4.

[0042] A method for preparing nylon 6 infrared-proof camouflage webbing comprises the following steps:

[0043] S1. Ribbon weaving: nylon 6 particles, polyphenylene ether, decabromodiphenyl ether, styrene-maleic anhydride copolymer and organic modified montmorillonite are blended and extruded in a mass ratio of 85:10:5:4:4, and drawn to form high-strength flame-retardant nylon 6 fibers, which are then woven into high-strength flame-retardant nylon 6 yarns, and then woven into ribbons;

[0044] S2, ribbon dyeing: after the dyeing solution is heated to 60°C, the ribbon is put into the dyeing solution according to the bath ratio of 1:15; then the temperature is raised to 120°C at a rate of 3°C / min and kept warm for 50 minutes; after the ribbon is cooled to room temperature, the ribbon is taken out, washed and dried; wherein the mass ratio of the acid dye, non-ionic penetrant, acid leveling agent and deionized water in the dyeing solution is 3.5:5:10:100, and the pH value of the dyeing solution is adjusted to 5 with glacial acetic acid;

[0045] S3, ribbon color fixing: After heating the color fixing solution to 70℃, put the ribbon in again according to the bath ratio of 1:15 and keep it warm for 25 minutes; after cooling down to room temperature, take out the ribbon, wash and dry it;

[0046] S4, ribbon printing: using a printing machine to print printing dyes on the ribbon to form camouflage colors, and drying at 125°C; wherein the mass ratio of starch, sodium alginate, Shilin dyes, disperse dyes, anti-infrared agents, carbon black, adhesives and deionized water in the printing dyes is 29.4:0.6:15:3:5:2:4:100;

[0047] S5. High temperature steaming: Steam the printed ribbon in saturated steam at a pressure of 0.6MPa and a temperature of 190℃ for 8min; then clean it and dry it;

[0048] S6. Waterproof setting: immerse the webbing into the waterproof setting liquid, and perform immersion rolling at 200°C, wash and dry to obtain the nylon 6 infrared-proof camouflage webbing; wherein the mass ratio of the fluorocarbon waterproof finishing agent, washable resin, zinc stearic acid and deionized water in the waterproof setting liquid is 4:1.5:1:100.

[0049] In order to better illustrate the technical effects of the present invention, the following embodiments are described:

[0050] The embodiment 1 of the Chinese patent on an ultra-high molecular weight polyethylene flame-retardant braid and its preparation method (CN103290703B) was used to prepare a braid without infrared protection; the embodiment 1 of the present invention was used to prepare a braid with infrared protection;

[0051] The regular parameters of the webbing without infrared protection and the webbing with infrared protection are the same, which are: warp yarn density: 20D, weft yarn density: 20D, warp density: 210 strands / 10cm, weft density: 160 strands / 10cm;

[0052] 1. The dyeing rate, color fixation rate, level dyeing, color fastness, friction coefficient and shear stiffness of the webbing without infrared protection and the webbing with infrared protection were tested respectively, and recorded in the following Table 1.

[0053] Table 1 Ribbon quality performance analysis table

[0054]

[0055] It can be concluded from Table 1 above that the dyeing rate, color fixation rate, level dyeing property and shear stiffness of the webbing with infrared protection are better than those without infrared protection. Furthermore, it can be concluded that the webbing prepared by the present invention has good dyeing rate, color fixation rate, level dyeing property and shear stiffness, is not easy to decolorize, and has high strength and stiffness.

[0056] 2. Since the infrared detector has a certain detectable range value for the infrared reflectivity, that is, there is a determinable upper limit and a determinable lower limit; when the reflectivity of the camouflage fabric exceeds the lower limit that the infrared detector can determine or is lower than the determinable upper limit, it will be detected, and the camouflage of the camouflage fabric will lose its effect; therefore, the reflectivity of the fabric without and with infrared protection tapes in different bands is tested respectively, and the colors of the fabric without and with infrared protection tapes are black, brown, dark green, white, light brown, olive green and light green respectively; and the reflection results are recorded in the following Tables 2 to 4.

[0057] Table 2 Reflectivity test table of black, brown and dark green ribbons

[0058]

[0059]

[0060] Table 3 Reflectivity test table of white and light brown ribbons

[0061]

[0062]

[0063] Table 4 Reflectivity test table of olive green and light green ribbons

[0064]

[0065] From Tables 2 to 4 above, it can be concluded that the reflectivity of the webbing with infrared protection is within the upper and lower limits; while the reflectivity of the part without infrared protection is outside the upper and lower limits. It can be further concluded that the webbing prepared by the present invention has excellent infrared protection capability.

[0066] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A nylon 6 infrared-proof camouflage webbing, characterized in that: The high-strength flame-retardant nylon 6 fiber is woven into a webbing, and then dyed and printed to form a nylon 6 infrared-proof camouflage webbing; wherein the high-strength flame-retardant nylon 6 fiber is extruded by blending nylon 6 particles, polyphenylene ether, flame retardant, compatibilizer and organic modified montmorillonite, and then drawn and woven; The mass ratio of the nylon 6 particles, polyphenylene ether, flame retardant, compatibilizer and organic modified montmorillonite is (75-85): (6-10): (3-5): (2-4): (2-4).

2. The nylon 6 infrared-proof camouflage webbing according to claim 1, characterized in that: The flame retardant is one or more of melamine cyanurate, brominated styrene polymer, decabromodiphenyl ether, decabromodiphenoxyethane, and ammonium polyphosphate; and the compatibilizer is styrene-maleic anhydride copolymer.

3. A method for preparing the nylon 6 infrared-proof camouflage webbing according to claim 1, characterized in that: The following steps are involved: S1, weaving of ribbon: nylon 6 particles, polyphenylene ether, flame retardant, compatibilizer and organic modified montmorillonite are blended and extruded according to the mass ratio of (75-85): (6-10): (3-5): (2-4): (2-4), and drawn to form high-strength flame-retardant nylon 6 fibers, which are then woven into high-strength flame-retardant nylon 6 yarns, and then woven into ribbons; S2, ribbon dyeing: after the dyeing solution is heated to 55-60°C, the ribbon is put into the solution at a bath ratio of 1:(12-15); then the temperature is raised to 120°C at a rate of 2-3°C / min, and the temperature is kept for 30-50min; after the temperature is cooled to room temperature, the ribbon is taken out, washed and dried; S3, ribbon color fixing: After heating the color fixing solution to 65-70℃, put the ribbon in again according to the bath ratio of 1:(12-15), and keep it warm for 25-30min; after cooling down to room temperature, take out the ribbon, wash and dry it; S4, ribbon printing: use a printing machine to print printing dyes on the ribbon to form camouflage colors; And drying at 120-125℃; S5. High temperature steaming: Steam the printed ribbon in saturated steam at a pressure of 0.5-0.6 MPa and a temperature of 185-190°C for 8-10 minutes; then clean and dry it; S6. Waterproof setting: Immerse the webbing in a waterproof setting liquid, and perform padding at 190-200°C. After cleaning, dry the webbing to obtain the nylon 6 infrared-proof camouflage webbing.

4. The method for preparing a nylon 6 infrared-proof camouflage webbing according to claim 3, characterized in that: In the step S2, the dyeing solution includes an acid dye, a non-ionic penetrant, an acid leveling agent, glacial acetic acid, and deionized water, wherein the mass ratio of the acid dye, the non-ionic penetrant, the acid leveling agent, and the deionized water is (2.5-3.5):(3-5):(8-10):100, and the pH value of the dyeing solution is adjusted to 3-6 with glacial acetic acid.

5. The method for preparing the nylon 6 infrared-proof camouflage webbing according to claim 3, characterized in that: In the step S4, the printing dye includes a paste, a shilin dye, a disperse dye, an anti-infrared agent, citric acid, carbon black, a binder and deionized water, wherein the mass ratio of the printing dye to the paste, the shilin dye, the disperse dye, the anti-infrared agent, the carbon black, the binder and the deionized water is (20-30): (10-15): (2-3): (3-5): (1-2): (2-4): 100; and the pH value of the printing dye is adjusted to 4-5 with citric acid.

6. The method for preparing the nylon 6 infrared-proof camouflage webbing according to claim 5, characterized in that: The paste is composed of starch and sodium alginate, and the mass ratio thereof is (2-3):

100.

7. The method for preparing the nylon 6 infrared-proof camouflage webbing according to claim 3, characterized in that: In the step S6, the waterproof setting liquid includes a waterproof finishing agent, a washable resin, a catalyst and deionized water, and the mass ratio thereof is (3-4): (1-1.5): (0.5-1): 100; wherein the catalyst is one of dibutyl stannate and zinc stearic acid; and the waterproof finishing agent is one of an alkane long-chain waterproof finishing agent, a silicone waterproof finishing agent, a fluorocarbon waterproof finishing agent and a fluorine-free waterproofing agent.

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