Radar investigation prevention concave-convex cloth, production method thereof and high-performance wide-spectrum multi-band camouflage net

Abstract

The invention belongs to the technical field of outdoor camouflage, and relates to anti-radar-investigation concave-convex cloth and a production method thereof, and a high-performance wide-spectrum multi-band camouflage net. The concave-convex cloth for preventing radar investigation is formed by warp and weft interweaving of yarn sets of a specific arrangement structure, each yarn set of the specific arrangement structure comprises a plurality of yarn units which are sequentially connected, and each yarn unit comprises a high-shrinkage yarn unit, a conductive yarn unit and a polyester yarn unit which are sequentially arranged. The camouflage net is formed by edge covering and quilting of the bottom net and the surface net, and the strength of the camouflage net can be guaranteed; wherein the surface net is made of cut-flower decorative cloth, the cut-flower decorative cloth is formed by splicing decorative cloth in various colors, it can be ensured that the multi-band camouflage net is close to the background in the visual color of the visible light band, and optical investigation is effectively resisted; and heat map camouflage can be formed under the observation of a middle and far infrared band thermal imager, so that thermal infrared camouflage is realized. The combination of the bottom net and the surface net further enhances the fluctuation of the net surface of the camouflage net, and is beneficial to enhancing the radar scattering capability.

Description

Technical Field

[0001] The invention belongs to the technical field of outdoor camouflage, and relates to a radar detection-proof concave-convex cloth and a production method thereof, and a high-performance wide-spectrum multi-band camouflage net. Background Art

[0002] Camouflage is a measure to conceal oneself or confuse the enemy by using optical, thermal, acoustic, electromagnetic and other technical means. By changing the original exposure symptoms of the target, hiding the truth and showing the false, the detectability of the target is reduced, making it difficult for the enemy to discern our true position, intentions, and actions, causing them to make mistakes in command.

[0003] Modern military camouflage methods include camouflage nets, camouflage paints, false targets, camouflage smoke, individual camouflage equipment, etc. Existing camouflage nets include bottom nets and surface nets. Usually, the bottom net is made of skeleton ropes or mesh cloth, and the surface net is made of cut flower decorative cloth with infrared protection, radar protection, and imitation background color. The camouflage net needs to be folded and gathered before and after use, which causes the cut flowers to be flattened, reduces the scattering effect, and greatly reduces the radar stealth performance. In addition, both the skeleton net and the mesh cloth have different degrees of hooking risks, which affects the performance. At the same time, with the development of science and technology, the anti-radar detection camouflage protection band has been broadened to the P band ~ millimeter wave band, and traditional camouflage nets can no longer meet the broadband stealth requirements.

[0004] In view of this, the present invention is proposed. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and provide a radar-proof convexo-concave cloth and a production method thereof, and a high-performance wide-spectrum multi-band camouflage net to solve the problem that traditional camouflage nets cannot meet the stealth requirements of wide frequency bands.

[0006] On the one hand, the present invention provides an anti-radar detection concave-convex cloth, which is formed by weft and warp interweaving of a yarn group with a specific arrangement structure, wherein the yarn group with the specific arrangement structure comprises a plurality of yarn units connected in sequence, and each of the yarn units comprises a high shrinkage yarn unit, a conductive yarn unit and a polyester yarn unit arranged in sequence;

[0007] Taking into account wavelengths of different bands and radar absorbing performance, the ratio of the number of high-shrinkage yarns in the high-shrinkage yarn unit, the number of conductive yarns in the conductive yarn unit, and the number of polyester yarns in the polyester yarn unit is (10-40): (10-40): (5-20).

[0008] Specifically, the shrinkage rate of the high shrinkage yarn in the high shrinkage yarn unit is 10% to 40%.

[0009] Specifically, the conductive fiber content of the conductive yarn in the conductive yarn unit is 20% to 40%.

[0010] Specifically, the warp density of the specific arrangement structure is set to 220-300 strands / 10 cm, and the weft density is set to 180-220 strands / 10 cm, so as to ensure the fluctuation size of the concave-convex form of the concave-convex cloth and the degree of radar scattering.

[0011] On the other hand, the present invention also provides a production method based on anti-radar detection concave-convex cloth, firstly, the yarn group with a specific arrangement structure is interwoven in warp and weft to form a plain cloth, and then the anti-radar detection concave-convex cloth is obtained after printing, dyeing, baking and shaping.

[0012] Specifically, the baking temperature for baking and setting is 80° C. to 120° C. to meet the shrinkage temperature requirement of high shrinkage yarn and the setting temperature requirement after coating.

[0013] In addition, the present invention also provides a high-performance wide-spectrum multi-band camouflage net, which is made of a bottom net and a surface net through edging and quilting; the bottom net adopts the anti-radar detection convex and concave cloth as described in part or all of the above, or the anti-radar detection convex and concave cloth obtained by the production method described in part or all of the above.

[0014] Specifically, the surface net is made of cut flower decorative cloth, and the cut flower decorative cloth is made by splicing decorative cloths of various colors.

[0015] Specifically, the anti-radar detection concave-convex cloth is a plain plaid cloth, and the camouflage pattern formed by the plain plaid cloth is the same as the camouflage pattern type on any side of the cut flower decorative cloth. Optionally, the type of the camouflage pattern includes a woodland type pattern, a desert type pattern or a snow type pattern.

[0016] Specifically, the distance between adjacent quiltings is 30 cm to 50 cm.

[0017] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0018] 1) The anti-radar detection concave-convex cloth provided by the present invention is formed by weft and warp interweaving of a yarn group with a specific arrangement structure, and the yarn group with the specific arrangement structure includes a plurality of yarn units connected in sequence, and each of the yarn units includes a high shrinkage yarn unit, a conductive yarn unit and a polyester yarn unit arranged in sequence. The present invention limits the amount of different types of yarns according to different band wavelengths and radar loss performance, and arranges the radial and weft densities specifically to achieve the concave-convex morphological structure, thereby improving the radar scattering intensity; and the yarn selected by the present invention: the polyester yarn has high modulus, high strength, good wear resistance, high elasticity, good shape retention and heat resistance, and good acid and alkali resistance, and is very suitable for use in the field environment; the conductive yarn is blended by polyester fiber and stainless steel conductive fiber, which gives the yarn conductive properties while ensuring strength, which is conducive to the realization of the anti-radar performance of the concave-convex cloth; the high shrinkage yarn is formed by modifying the polyester fiber to form a yarn with a shrinkage function, which can produce a shrinkage effect at a certain temperature and give the fabric a wrinkled shape.

[0019] 2) The camouflage net formed by the above-mentioned anti-radar detection concave-convex cloth is made of a bottom net (anti-radar detection concave-convex cloth) and a surface net through hemming and quilting, which can ensure the strength of the camouflage net; wherein, the surface net adopts a cut flower decorative cloth, which is made of decorative cloths of various colors (different emissivity), which can ensure that the multi-band camouflage net is close to the background in visual color in the visible light band, effectively resisting optical detection; under the observation of a mid- and far-infrared band thermal imager, a thermal map camouflage can be formed to achieve thermal infrared camouflage. The bottom net, i.e., the anti-radar detection concave-convex cloth, not only contains conductive fibers inside, but also has concave-convex shapes of different sizes, uneven surface wrinkles, and is not easy to flatten in three dimensions, which can effectively increase radar loss. The combination of the bottom net and the surface net further strengthens the ups and downs of the camouflage net surface, which is conducive to enhancing the radar scattering capability.

[0020] 3) The hemming sewing structure adopted by the present invention effectively solves the problem that the cut flowers are flattened and the scattering effect is reduced when the camouflage net is folded and gathered before and after use, thereby damaging the radar stealth performance; eliminates the risk of hooking on the skeleton net and the mesh cloth, and avoids the adverse effects on the performance due to hooking; at the same time, it can also broaden the stealth protection band and improve the broadband stealth performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are incorporated in and constitute a part of this specification and, together with the description, serve to explain the principles of the present invention.

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0023] Figure 1 A schematic diagram of the weaving structure of the anti-radar detection concave-convex cloth provided by the present invention;

[0024] Figure 2 A side cross-sectional view of the overall structure of a high-performance wide-spectrum multi-band camouflage net provided by the present invention;

[0025] Figure 3 A structural diagram of the high-performance wide-spectrum multi-band camouflage net provided by the present invention.

[0026] Among them: 1. high shrinkage yarn unit; 2. conductive yarn unit; 3. polyester yarn unit; 4. bottom mesh; 5. surface mesh; 6. hemming; 7. quilting thread. DETAILED DESCRIPTION

[0027] Here, exemplary embodiments will be described in detail, and examples thereof are shown in the accompanying drawings. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Instead, they are only examples consistent with some aspects of the present invention as detailed in the appended claims.

[0028] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0029] Example 1

[0030] See also Figure 1 As shown, this embodiment provides an anti-radar detection concave-convex cloth, which is formed by the warp and weft interweaving of a yarn group with a specific arrangement structure, and the yarn group with the specific arrangement structure includes a plurality of yarn units connected in sequence, and each of the yarn units includes a high shrinkage yarn unit 1, a conductive yarn unit 2 and a polyester yarn unit 3 arranged in sequence.

[0031] Furthermore, the shrinkage rate of the high shrinkage yarn in the high shrinkage yarn unit 1 is 10%; the conductive fiber content of the conductive yarn in the conductive yarn unit 2 is 20%; the warp density of the specific arrangement structure is 300 strands / 10cm, and the weft density is 220 strands / 10cm.

[0032] Furthermore, in this embodiment, the anti-radar detection concave-convex fabric is formed by weft and warp interweaving of yarn groups with a specific arrangement structure, wherein:

[0033] The first yarn group includes 10 high shrinkage yarns + (10 conductive yarns + 5 polyester yarns); the second yarn group includes 10 high shrinkage yarns + (10 conductive yarns + 5 polyester yarns)*2; the third yarn group includes 10 high shrinkage yarns + (10 conductive yarns + 5 polyester yarns)*3.

[0034] The production method of the above-mentioned anti-radar detection concave-convex cloth is to form a plain cloth by weaving the yarn groups with a specific arrangement structure in warp and weft, and then print and dye, bake and shape to obtain the anti-radar detection concave-convex cloth. Preferably, the baking temperature of the baking and shaping is 80°C.

[0035] Based on the above-mentioned anti-radar detection concave-convex cloth, this embodiment also provides a high-performance wide-spectrum multi-band camouflage net, the bottom net 4 (anti-radar detection concave-convex cloth) and the surface net 5 are reinforced by the hemming 6, and the whole is fixed by the quilting line 7, and the distance between adjacent quilting is 30cm. The bottom net 4 and the surface net 5 are camouflage patterns of the same color system, and the type of the camouflage pattern is a woodland type pattern.

[0036] The camouflage net provided in this embodiment has the camouflage effect of visible light, infrared and radar multi-bands at the same time. The bottom net 4, i.e. the anti-radar detection concave-convex cloth, not only contains conductive fibers inside, but also has concave-convex shapes of different sizes, uneven surface wrinkles, and is not easy to flatten in three dimensions, which can effectively improve radar loss. The combination of the bottom net 4 and the surface net 5 further strengthens the ups and downs of the net surface, enhances the radar scattering ability, and improves the broadband stealth performance, which can cover the P band to the millimeter wave band, especially the Ku band to the Ka band. The performance is the best.

[0037] Example 2

[0038] See also Figure 1 As shown, this embodiment provides an anti-radar detection concave-convex cloth, which is formed by the warp and weft interweaving of a yarn group with a specific arrangement structure, and the yarn group with the specific arrangement structure includes a plurality of yarn units connected in sequence, and each of the yarn units includes a high shrinkage yarn unit 1, a conductive yarn unit 2 and a polyester yarn unit 3 arranged in sequence.

[0039] Furthermore, the shrinkage rate of the high shrinkage yarn in the high shrinkage yarn unit 1 is 40%; the conductive fiber content of the conductive yarn in the conductive yarn unit 2 is 40%; the warp density of the specific arrangement structure is 220 strands / 10cm, and the weft density is 180 strands / 10cm.

[0040] Furthermore, in this embodiment, the anti-radar detection concave-convex fabric is formed by weft and warp interweaving of yarn groups with a specific arrangement structure, wherein:

[0041] The first yarn group includes 40 high shrinkage yarns + (40 conductive yarns + 20 polyester yarns); the second yarn group includes 40 high shrinkage yarns + (40 conductive yarns + 20 polyester yarns)*2; the third yarn group includes 40 high shrinkage yarns + (40 conductive yarns + 20 polyester yarns)*3.

[0042] The production method of the above-mentioned anti-radar detection concave-convex cloth is to form a plain cloth by weaving the yarn groups of a specific arrangement structure in warp and weft, and then print and dye, bake and shape to obtain the anti-radar detection concave-convex cloth. Preferably, the baking temperature of the baking and shaping is 120°C.

[0043] Based on the above-mentioned anti-radar detection concave-convex cloth, this embodiment also provides a high-performance wide-spectrum multi-band camouflage net, the bottom net 4 (anti-radar detection concave-convex cloth) and the surface net 5 are reinforced by the hemming 6, and the whole is fixed by the quilting line 7, and the distance between adjacent quilting is 50cm. The bottom net 4 and the surface net 5 are camouflage patterns of the same color system, and the type of the camouflage pattern is a desert type pattern.

[0044] The camouflage net provided in this embodiment has the camouflage effect of visible light, infrared and radar multi-bands. The bottom net 4, i.e. the anti-radar detection concave-convex cloth, not only contains conductive fibers inside, but also has concave-convex shapes of different sizes, uneven surface wrinkles, and is not easy to flatten in three dimensions, which can effectively improve radar loss. The combination of the bottom net 4 and the surface net 5 further strengthens the ups and downs of the net surface, enhances the radar scattering ability, and improves the broadband stealth performance, which can cover the P band to millimeter wave band, especially the S band to X band. The performance is the best.

[0045] Example 3

[0046] See also Figure 1 As shown, this embodiment provides an anti-radar detection concave-convex cloth, which is formed by the warp and weft interweaving of a yarn group with a specific arrangement structure, and the yarn group with the specific arrangement structure includes a plurality of yarn units connected in sequence, and each of the yarn units includes a high shrinkage yarn unit 1, a conductive yarn unit 2 and a polyester yarn unit 3 arranged in sequence.

[0047] Furthermore, the shrinkage rate of the high shrinkage yarn in the high shrinkage yarn unit 1 is 40%; the conductive fiber content of the conductive yarn in the conductive yarn unit 2 is 40%; the warp density of the specific arrangement structure is 280 strands / 10cm, and the weft density is 200 strands / 10cm.

[0048] Furthermore, in this embodiment, the anti-radar detection concave-convex fabric is formed by weft and warp interweaving of yarn groups with a specific arrangement structure, wherein:

[0049] The first yarn group includes 30 high shrinkage yarns + (20 conductive yarns + 10 polyester yarns); the second yarn group includes 30 high shrinkage yarns + (30 conductive yarns + 10 polyester yarns)*2; the third yarn group includes 30 high shrinkage yarns + (40 conductive yarns + 20 polyester yarns)*3.

[0050] The production method of the above-mentioned anti-radar detection concave-convex cloth is to form a plain cloth by weaving the yarn groups with a specific arrangement structure in warp and weft, and then print and dye, bake and shape to obtain the anti-radar detection concave-convex cloth. Preferably, the baking temperature of the baking and shaping is 110°C.

[0051] Based on the above anti-radar detection concave-convex cloth, this embodiment also provides a high-performance wide-spectrum multi-band camouflage net, see Figures 2-3 The bottom net 4 (anti-radar detection concave-convex cloth) and the surface net 5 are reinforced by the hemming 6, and the whole is fixed by the quilting line 7, and the distance between adjacent quilting is 40cm. Among them, the bottom net 4 and the surface net 5 are camouflage patterns of the same color system, and the surface net camouflage decorative cloth is spliced ​​with multiple colors (3 or more colors), and the pattern style is not limited, as long as it meets the requirements of GJB 4004 or GJB 7929, and the bottom net 4 is a corresponding desert pattern, woodland pattern or snow pattern color system monochrome.

[0052] The camouflage net provided in this embodiment has the camouflage effect of visible light, infrared and radar multi-bands. The bottom net 4, i.e. the anti-radar detection concave-convex cloth, not only contains conductive fibers inside, but also has concave-convex shapes of different sizes, uneven surface wrinkles, and is not easy to flatten in three dimensions, which can effectively improve radar loss. The combination of the bottom net 4 and the surface net 5 further strengthens the ups and downs of the net surface, enhances the radar scattering ability, and improves the broadband stealth performance, which can cover the P band to millimeter wave band, especially the C band to X band. The performance is the best.

[0053] In order to further verify the effectiveness of the technical solution provided by the present invention, the radar performance test of the anti-radar detection concave-convex cloth prepared in the above embodiments 1 to 3 is carried out, and the relevant indicators are shown in the following Table 1:

[0054] Table 1 Achievement of indicators of anti-radar detection concave-convex cloth obtained in Examples 1 to 3

[0055]

[0056]

[0057] It can be seen from Table 1 above that the relevant indicators of the anti-radar detection concave-convex cloth prepared by the present invention in different bands all meet the requirements.

[0058] The above description is only a specific embodiment of the present invention, so that those skilled in the art can understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention.

[0059] It should be understood that the present invention is not limited to what has been described above and that various modifications and changes may be made without departing from its scope. The scope of the present invention is limited only by the appended claims.

Claims

1. A radar detection convexo-concave cloth, which is formed by weft and warp interweaving of yarn groups with a specific arrangement structure, characterized in that: The yarn group of the specific arrangement structure comprises a plurality of yarn units connected in sequence, each of the yarn units comprising a high shrinkage yarn unit (1), a conductive yarn unit (2) and a polyester yarn unit (3) arranged in sequence; The ratio of the number of high shrinkage yarns in the high shrinkage yarn unit (1), the number of conductive yarns in the conductive yarn unit (2), and the number of polyester yarns in the polyester yarn unit (3) is (10-40): (10-40): (5-20).

2. The anti-radar detection concave-convex cloth according to claim 1, characterized in that: The shrinkage rate of the high shrinkage yarn in the high shrinkage yarn unit (1) is 10% to 40%.

3. The anti-radar detection concave-convex fabric according to claim 1, characterized in that: The conductive fiber content of the conductive yarn in the conductive yarn unit (2) is 20% to 40%.

4. The anti-radar detection concave-convex cloth according to claim 1, characterized in that: The specific arrangement structure has a warp density of 220 to 300 strands / 10 cm, and a weft density of 180 to 220 strands / 10 cm.

5. The method for producing the radar-proof convexo-concave fabric according to any one of claims 1 to 4, characterized in that: First, the yarn groups with a specific arrangement structure are interwoven into a plain cloth, and then the anti-radar detection concave-convex cloth is obtained after printing, dyeing, baking and shaping.

6. The method for producing the radar-proof convexo-concave fabric according to claim 5, characterized in that: The baking temperature for the baking and shaping is 80°C to 120°C.

7. A high-performance wide-spectrum multi-band camouflage net, characterized in that: The invention is made of a bottom net (4) and a surface net (5) through hemming (6) and quilting; the bottom net (4) is made of the anti-radar detection concave-convex cloth as claimed in any one of claims 1 to 4 or the anti-radar detection concave-convex cloth obtained by the production method as claimed in any one of claims 5 to 6.

8. The high-performance wide-spectrum multi-band camouflage net according to claim 7, characterized in that: The surface net (5) is made of cut flower decorative cloth, and the cut flower decorative cloth is formed by splicing decorative cloths of various colors.

9. The high-performance wide-spectrum multi-band camouflage net according to claim 8, characterized in that: The anti-radar detection concave-convex cloth is a plain plaid cloth, and the camouflage pattern formed by the plain plaid cloth is the same as the camouflage pattern type on any one side of the cut flower decorative cloth.

10. The high-performance wide-spectrum multi-band camouflage net according to claim 7, characterized in that: The distance between adjacent quiltings is 30cm to 50cm.

Images