Concave-convex cloth for preventing radar investigation

Abstract

The utility model belongs to the technical field of camouflage, and relates to concave-convex cloth for preventing radar investigation. Comprising a plurality of first units which are connected with one another, each first unit comprises a plurality of mixed yarn sets in the longitude direction and the latitude direction, first conductive yarn sets and high-shrinkage yarn sets are arranged on the two sides of each mixed yarn set from near to far, and the high-shrinkage yarn sets are arranged at the ends of the outermost sides of the first units in each direction; the mixed yarn set comprises a second conductive yarn set, and common polyester yarn sets are arranged on the two sides of the second conductive yarn set. The undulation degree of the wrinkles of the cloth cover can be adjusted by controlling the arrangement distance of the high-shrinkage yarns, the larger the undulation degree of the wrinkles is, the better the anisotropy of the wrinkles is, the better the radar scattering effect is, and the better the anti-radar effect is. Compared with the prior art that a compact metal layer is coated on the surface of the camouflage cloth, the camouflage cloth is lighter and better in radar wave attenuation effect.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of camouflage technology relates to a kind of for radar reconnaissance concave-convex cloth. BACKGROUND

[0002] At present, the conventional camouflage cloth for preventing radar electromagnetic wave is coated with a dense metal layer on the surface, which is used to reflect electromagnetic waves, so that the opponent cannot detect the device arranged below the camouflage cloth. However, such camouflage cloth is heavy and its use is severely limited.

[0003] Therefore, there is an urgent need for a lightweight camouflage cloth with good camouflage performance. SUMMARY

[0004] The utility model aims at overcoming the shortcomings of the prior art and providing a concave-convex cloth for radar reconnaissance.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0006] The utility model provides a kind of concave-convex cloth for radar reconnaissance, including a plurality of first units connected with each other, each first unit includes hybrid yarn unit in longitude direction and latitude direction, the hybrid yarn unit includes a plurality of hybrid yarn groups, the two sides of the hybrid yarn unit are provided with first conductive yarn group, high shrinkage yarn group from near to far;

[0007] The hybrid yarn group includes second conductive yarn group, and the two sides of the second conductive yarn group are provided with ordinary polyester yarn group.

[0008] Further, the high shrinkage yarn group contains 16-18 high shrinkage yarns.

[0009] Further, the shrinkage rate of the high shrinkage yarn is 30%.

[0010] Further, the ordinary polyester yarn group contains 16-18 polyester yarns.

[0011] Further, the first conductive yarn group contains 10-15 conductive yarns.

[0012] Further, the second conductive yarn group contains 6-8 conductive yarns.

[0013] Further, the conductive yarn is made of polyester fiber and conductive fiber.

[0014] Further, the content of conductive fiber in the conductive yarn is 30%.

[0015] Further, the number of hybrid yarn groups is 3.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] 1. In the utility model, the conductive yarn is periodically arranged and woven, which forms a conductive network on the cloth surface, and the electromagnetic wave received at any point on the cloth surface is the superposition of multiple reflection signals, each reflection signal has a different phase, phase cancellation is generated, radar wave attenuation effect is achieved, compared with the dense metal layer coated on the surface of the camouflage cloth in the prior art, the utility model is more portable and has better radar wave attenuation effect.

[0018] 2. In the utility model, when the high shrinkage yarn shrinks, the ordinary yarn and the conductive yarn remain in the original state, at this time, the cloth surface will form uneven wrinkles. The uneven wrinkle cloth surface will scatter electromagnetic waves in different directions to achieve radar prevention performance. The arrangement interval of the high shrinkage yarn can be controlled to adjust the fluctuation degree of the cloth wrinkle, the greater the wrinkle fluctuation degree, the better the direction difference, the more excellent the radar scattering effect, and the better the radar prevention effect.

[0019] 3. In the utility model, through the arrangement of the high shrinkage yarn, the shrinkage square size is designed, the fluctuation degree of the cloth wrinkle is changed, and then the scattering effect of the radar wave of the radar detection concave-convex cloth is controlled; through the arrangement of the conductive yarn, the conductive network structure is designed, the phase of the electromagnetic wave reflection signal is changed, and then the absorption effect of the radar wave of the radar detection concave-convex cloth is controlled; through the arrangement of the polyester yarn, the interval of the conductive yarn is designed, the effect of different wavelength electromagnetic waves is controlled, and the radar camouflage performance of different wave bands is realized. BRIEF DESCRIPTION OF DRAWINGS

[0020] The drawings incorporated into the description and forming part of the description are used together with the description to explain the principles of the utility model.

[0021] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below, and obviously, other drawings can be obtained by the drawings without creative labor for the ordinary skilled in the art.

[0022] Figure 1 It is a structural schematic view of the utility model;

[0023] Figure 2 It is a structural schematic view of the latitude direction of the first unit in the utility model;

[0024] Figure 3 It is a structural schematic view of the longitude direction of the first unit in the utility model;

[0025] Figure 4 The arrangement distribution diagram of the mixed yarn group in the utility model.

[0026] Among them: 1 is the first unit; 11 is the high shrinkage yarn group; 12 is the first conductive yarn group; 13 is the mixed yarn group; 131 is the ordinary polyester yarn group; 132 is the second conductive yarn group. DETAILED DESCRIPTION

[0027] The exemplary embodiments will be described in detail herein, and the embodiments described in the following exemplary embodiments do not represent all the embodiments consistent with the utility model. Instead, they are only examples consistent with some aspects of the utility model as detailed in the appended claims. EMBODIMENT

[0028] As Figures 1-4 shown, a concave-convex cloth for anti-radar investigation, comprising a plurality of first units 1 connected with each other, each first unit 1 comprises a mixed yarn unit in the longitude direction and the latitude direction, the mixed yarn unit comprises a plurality of mixed yarn groups 13, the two sides of the mixed yarn unit are provided with a first conductive yarn group 12 and a high shrinkage yarn group 11 from near to far.

[0029] The mixed yarn group 13 comprises a second conductive yarn group 132, and the two sides of the second conductive yarn group 132 are provided with an ordinary polyester yarn group 131.

[0030] In the embodiment, the concave-convex cloth for anti-radar investigation comprises P×Q first units 1 connected with each other, wherein P is a positive integer greater than or equal to 1, Q is a positive integer greater than or equal to 1, P and Q can be equal or not equal, and can be selected according to actual conditions; preferably, in the longitude direction of the first unit 1, a high shrinkage yarn group 11, a first conductive yarn group 12, M mixed yarn groups 13, a first conductive yarn group 12 and a high shrinkage yarn group 11 are arranged in sequence, wherein M is a positive integer greater than or equal to 1; in the latitude direction of the first unit, a high shrinkage yarn group 11, a first conductive yarn group 12, N mixed yarn groups 13, a first conductive yarn group 12 and a high shrinkage yarn group 11 are arranged in sequence, wherein N is a positive integer greater than or equal to 1, and in the embodiment, as Figure 2 , Figure 3 shown, M=N=3; as Figure 4 shown, the mixed yarn group 13 comprises an ordinary polyester yarn group 131, a second conductive yarn group 132 and an ordinary polyester yarn group 131 arranged in sequence.

[0031] The conductive yarn is arranged periodically, and a conductive network is formed on the fabric surface, and the electromagnetic wave received at any point on the fabric surface is the superposition of multiple reflection signals, each reflection signal has different phase, phase cancellation is generated, and the radar wave attenuation effect is achieved.

[0032] Further, the high-shrinkage yarn group 11 contains 16-18 high-shrinkage yarns.

[0033] In the embodiment, the high-shrinkage yarn group 11 can contain 16, 17 or 18 high-shrinkage yarns, which can be selected according to actual needs, preferably, the high-shrinkage yarn group 11 contains 17 high-shrinkage yarns, the shrinkage rate of the high-shrinkage yarn is 20%-50%, preferably, the high-shrinkage yarn is selected from yarns with a shrinkage rate of 30% at 120 DEG C; the high-shrinkage yarn is a chemical fiber high-shrinkage yarn or a natural fiber high-shrinkage yarn, and the high-shrinkage yarn can be selected from various specifications such as 20S / 2, 32S / 2, 40S / 2 and 60S / 2, which can be selected according to actual needs, preferably, the high-shrinkage yarn is selected from yarns with a specification of 20S / 2; the brand of the high-shrinkage yarn can be selected from Weiqiao, TEXHONG, Huafu color spinning and the like. The high-shrinkage yarn is a yarn with shrinkage function formed by modifying polyester fiber, which produces shrinkage effect at a certain temperature and gives the fabric a wrinkled shape.

[0034] Further, the ordinary polyester yarn group 131 contains 16-18 polyester yarns.

[0035] In the embodiment, the ordinary polyester yarn group 131 can contain 16, 17 or 18 polyester yarns, which can be selected according to actual needs, preferably, the ordinary polyester yarn group 131 contains 17 polyester yarns; the polyester yarn can be selected from various specifications such as 20S / 2, 21S / 2, 32S / 2, 40S / 2, 45S / 2, 50S / 2 and 60S / 2, which can be selected according to actual needs, preferably, the polyester yarn is selected from yarns with a specification of 20S / 2; the brand of the polyester yarn can be selected from TONGKUN, Hengyi, Xin Fengming and the like. 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 outdoor environment.

[0036] Further, the first conductive yarn group 12 contains 10-15 conductive yarns.

[0037] In the embodiment, the first conductive yarn group 12 can contain 10, 11, 12, 13, 14 or 15 polyester yarns, which can be selected according to actual needs, preferably, the first conductive yarn group 12 contains 12 conductive yarns; the conductive yarns can be selected from polyester conductive yarns, pure cotton conductive yarns, acrylic conductive yarns, Thunderon conductive yarns, silver-plated conductive yarns and the like, and the conductive yarns can be selected from various specifications such as 20S / 2, 21S / 2, 32S / 2 and 40S / 2 according to actual needs. The conductive yarns are composed of polyester fibers and stainless steel conductive fibers, which can ensure the strength and impart the conductive property to the yarns, and is conducive to the realization of the radar performance of the concave-convex fabric.

[0038] Further, the second conductive yarn group 132 contains 6-8 conductive yarns.

[0039] In the embodiment, the second conductive yarn group 132 can contain 6, 7 or 8 conductive yarns, which can be selected according to actual needs, preferably, the second conductive yarn group 132 contains 7 conductive yarns. The conductive yarns can be selected from polyester conductive yarns, pure cotton conductive yarns, acrylic conductive yarns, Thunderon conductive yarns, silver-plated conductive yarns and the like, and the conductive yarns can be selected from various specifications such as 20S / 2, 21S / 2, 32S / 2 and 40S / 2 according to actual needs.

[0040] Further, the conductive yarns are composed of polyester fibers and conductive fibers.

[0041] In the embodiment, the conductive yarns are composed of polyester fibers and stainless steel conductive fibers, which can ensure the strength and impart the conductive property to the yarns, and is conducive to the realization of the radar performance of the concave-convex fabric.

[0042] Further, the content of the conductive fibers in the conductive yarns is 30%.

[0043] In the embodiment, when the content of the conductive fibers reaches 30%, the conductive yarns can effectively conduct current, and the conductive yarns have a long service life.

[0044] Further, the number of the mixed yarn groups 13 is 3 groups.

[0045] In the embodiment, the number of the mixed yarn groups 13 can be multiple groups, preferably, the number of the mixed yarn groups 13 is 3 groups.

[0046] After the high-shrinkage yarns, the conductive yarns and the ordinary polyester yarns are sequentially treated by doubling and twisting, warping, healding, reeding, weaving and post-treatment, a concave-convex fabric for preventing radar detection is obtained.

[0047] The radar performance test is carried out on the concave-convex cloth, and the radar detection resistance concave-convex cloth meets the index requirements through the diffuse reflection, scattering and phase cancellation of the surface of the concave-convex cloth.

[0048] Table 1: Index implementation situation summary of radar detection resistance concave-convex cloth

[0049]

[0050] The above description is merely a specific implementation of the present application, which enables those skilled in the art to understand or implement the present application. 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 application.

[0051] It should be understood that the present application is not limited to the above-described content, and various modifications and changes can be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A concave-convex cloth for radar detection avoidance, characterized by, It comprises a plurality of first units (1) connected with each other, each of the first units (1) comprises a mixed yarn unit in the longitude direction and the latitude direction, the mixed yarn unit comprises a plurality of mixed yarn groups (13), and two sides of the mixed yarn unit are provided with a first conductive yarn group (12) and a high shrinkage yarn group (11) from near to far. The mixed yarn group (13) comprises a second conductive yarn group (132), and two sides of the second conductive yarn group (132) are provided with a common polyester yarn group (131).

2. The concave-convex cloth for radar detection according to claim 1, wherein The high shrinkage yarn group (11) contains 16-18 high shrinkage yarns.

3. The concave-convex cloth for radar detection according to claim 2, wherein The shrinkage rate of the high shrinkage yarn is 30%.

4. The concave-convex cloth for radar detection according to claim 1, wherein The common polyester yarn group (131) contains 16-18 polyester yarns.

5. The concave-convex cloth for radar investigation according to claim 1, wherein The first conductive yarn group (12) contains 10-15 conductive yarns.

6. The concave-convex cloth for radar investigation according to claim 1, wherein The second conductive yarn group (132) contains 6-8 conductive yarns.

7. The concave-convex cloth for radar elusion according to claim 5 or 6, wherein The conductive yarn is composed of polyester fiber and conductive fiber.

8. The concave-convex cloth for radar investigation according to claim 7, wherein The content of the conductive fiber in the conductive yarn is 30%.

9. The concave-convex cloth for radar investigation according to claim 1, wherein The number of the mixed yarn group (13) is 3 groups.

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