Infrared detection resistant fabric

Abstract

The present application relates to a kind of anti infrared detection fabric, including fabric main body (1), the fabric main body (1) includes skin-friendly warm layer (11), bacteriostatic layer (12) and electromagnetic wave interference layer (13);Skin-friendly warm layer (11), bacteriostatic layer (12) and electromagnetic wave interference layer (13) are connected by three-layer French rib weave;The three-layer French rib weave includes four-way loop system, wherein, first road and third road loop system are jointly woven to form skin-friendly warm layer (11);Fourth road loop system is woven to form bacteriostatic layer (12);Second road loop system is woven to form electromagnetic wave interference layer (13);The upper end of electromagnetic wave interference layer (13) is provided with shielding layer (2), and the upper end of shielding layer (2) is provided with waterproof wear-resistant layer (3);The fabric has bacteriostatic performance, warm performance, electromagnetic wave shielding performance, wear resistance and waterproof performance and far infrared shielding performance.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of textile fabrics, and particularly relates to an anti-infrared detection fabric with antibacterial performance, warm-keeping performance, electromagnetic wave shielding performance, wear-resistant and waterproof performance and far-infrared shielding performance. BACKGROUND

[0002] With the increasing maturity of thermal infrared detection technology, various thermal imaging detection equipment appears on the modern battlefield, such as a rotor unmanned aerial vehicle carrying thermal imaging, an infrared tracking missile, and the like. The stealth protection clothing for military vehicles such as armored vehicles and tanks is simply camouflaged by adopting a camouflage scheme or an environmental color form, and can only simply camouflage and hide visible light equipment, and cannot camouflage infrared detection equipment. The vehicles are easily discovered by infrared detection, especially in the process of starting, the vehicles generate a large amount of heat, and are more easily detected by infrared equipment, thereby being attacked. In addition, the heat emitted by special operation personnel during combat is easily detected by infrared sensing devices, and the signal wave emitted by radar is easily detected by general camouflage. Therefore, the fabric with infrared shielding function, infrared absorption function and radar electromagnetic wave interference function has great use value and market space. SUMMARY

[0003] The present application belongs to the technical field of textile fabrics, and particularly relates to an anti-infrared detection fabric with antibacterial performance, warm-keeping performance, electromagnetic wave shielding performance, wear-resistant and waterproof performance and far-infrared shielding performance.

[0004] The technical scheme adopted by the present application is as follows: an anti-infrared detection fabric, comprising a fabric main body, the fabric main body comprising a skin-friendly warm-keeping layer, an antibacterial layer and an electromagnetic wave interference layer; the skin-friendly warm-keeping layer, the antibacterial layer and the electromagnetic wave interference layer are connected by three-layer French rib knitting; the three-layer French rib knitting comprises a four-way loop-forming system, wherein the first loop-forming system and the third loop-forming system are jointly knitted to form the skin-friendly warm-keeping layer; the fourth loop-forming system is knitted to form the antibacterial layer; the second loop-forming system is knitted to form the electromagnetic wave interference layer; the upper end of the electromagnetic wave interference layer is provided with a shielding layer; the upper end of the shielding layer is provided with a waterproof and wear-resistant layer; the yarns knitted by the first loop-forming system and the third loop-forming system are both skin-friendly warm-keeping yarns, the skin-friendly warm-keeping yarns are of a mechanical covering structure and comprise a heating yarn core and a skin-friendly yarn skin; the heating yarn core is far-infrared heating polyester DTY; the skin-friendly yarn skin is a blended yarn spun from 50% weight ratio of deerskin, 45% weight ratio of Tencel and 5% weight ratio of mulberry silk; the yarn knitted by the fourth loop-forming system is a blended yarn spun from 5% weight ratio of silver-chelated chitosan fiber and 95% weight ratio of polyester fiber; and the yarn knitted by the second loop-forming system is an elastic composite filament composed of one SORONA filament and one silver-plated polyester filament.

[0005] Further, the shielding layer is a nanometer-sized catalyst zinc oxide coating layer with a thickness of 0.2mm-0.4mm.

[0006] The nanometer-sized zinc oxide stealth material has a "stealth" effect on infrared and electromagnetic waves, which mainly depends on the characteristics of the nanoparticles in its internal structure: on the one hand, the size of the nanoparticles is much smaller than the wavelength of infrared and radar waves, so the nanometer-sized stealth material has much higher transmittance to such waves than conventional materials, which makes the reflected signal received by infrared detectors and radars extremely small; on the other hand, the surface area of the nanoparticles is 3-4 orders of magnitude smaller than that of conventional coarse powder, so the nanometer-sized stealth material has much higher absorption rate to infrared and electromagnetic waves than conventional materials, which greatly reduces the intensity of the reflected signal received by infrared detectors and radars, thus achieving a "stealth" effect.

[0007] Further, the waterproof layer is a plain weave fabric with both warp and weft yarns being water-repellent ultrahigh molecular weight polyethylene filaments.

[0008] The ultrahigh molecular weight polyethylene has the characteristics of wear resistance, corrosion resistance, high strength, etc., and the plain weave fabric produced by using the water-repellent ultrahigh molecular weight polyethylene filaments as the waterproof layer not only has the function of waterproofing the fabric, but also has the functions of wear resistance, etc.

[0009] Further, the weight ratio of polytetrafluoroethylene in the water-repellent ultrahigh molecular weight polyethylene filaments is 2-3%. The polytetrafluoroethylene has good water-repellent and oil-repellent ability, and the addition of (2-3)% of polytetrafluoroethylene can not only achieve good water-repellent effect, but also not affect the physical property indexes and spinning efficiency of the ultrahigh molecular weight polyethylene.

[0010] Further, the shielding layer is adhesively connected with the electromagnetic wave interference layer, and the waterproof wear-resistant layer is adhesively connected with the shielding layer.

[0011] When the shielding layer and the electromagnetic wave interference layer and the waterproof wear-resistant layer are adhesively connected, a mixed adhesive formed by blending water-based polyurethane resin and water-based acrylic resin is used, wherein the mass ratio of the water-based polyurethane resin to the water-based acrylic resin is 1:1, and the mixed adhesive can effectively ensure that the shielding layer and the electromagnetic wave interference layer are adhesively connected together.

[0012] Further, after the fabric main body, the shielding layer and the waterproof wear-resistant layer are adhesively connected by using an adhesive, they are tightly extruded together by a rolling machine at 70-80℃.

[0013] Further, the fineness of the heating yarn core is 75D.

[0014] Further, the fineness of the skin-friendly yarn skin is 60S.

[0015] Further, the fineness of the SOROAN filament is 50D.

[0016] Further, the silver-plated polyester filament has a fineness of 120D.

[0017] Further, the silver-plated polyester filament is prepared by the following method:

[0018] ①Plasma treatment of the polyester filament: the polyester filament is passed between the plates of a normal-pressure plasma dielectric barrier discharge, a voltage is applied to ensure that the air between the plates emits power of 30W; the air medium between the plates of the low-temperature plasma discharge is argon, and the polyester filament is treated between the plates for 2min.

[0019] When the plasma modifies the surface of the textile substrate, it will produce an etching effect on the surface of the textile substrate. This includes sputter etching caused by the impact of electrons, ions and other charged particles on the material surface, as well as chemical etching of the material surface by the chemical active substances in the plasma. Etching causes changes in the morphological structure of the fiber surface. The surface of the etched polyester filament presents more, deeper and denser pits and small holes, making the silver particle filament have better binding firmness.

[0020] ②Vacuum sputter silver plating: the polyester filament treated in step ① is subjected to vacuum sputter silver plating treatment:

[0021] Target material: silver

[0022] Excitation gas: argon

[0023] Time: 8-10min

[0024] Working vacuum / Pa: 0.05

[0025] Vacuum sputter coating is a technology that uses high-energy particles to impact metal targets for energy exchange, and the target atoms or molecules sputtered from the target surface are deposited on the textile substrate to form a metal film that shields electromagnetic waves. This technology uses argon ions to excite atoms on the surface of the metal target and deposit them in layers. Since the sputter coating target does not undergo phase change, the compound composition is not easy to change, and the alloy is not easy to fractionate, so it has good plating effect; however, the compactness of vacuum sputter coating is poor, and the surface will form many unevenly distributed metal film layers or micropores, causing the vacuum sputter coated fiber to be not resistant to better use in high-demand shielding products.

[0026] ③Chemical silver plating: the polyester filament treated in step ② is subjected to chemical silver plating treatment:

[0027] Chemical plating solution composition: 10g / L silver nitrate, 6g / L potassium hydroxide, 60ml / L ammonia salt base, 20ml / L ethylenediamine, 70ml / L sodium thiosulfate

[0028] Plating solution pH value: 12-13

[0029] Temperature of plating solution / ℃: 30-40

[0030] Immersion plating time / min: 15-60

[0031] After the polyester filament is vacuum sputtered with metal, the polyester filament has spontaneous catalysis, so the polyester filament can directly enter a chemical plating bath, and the two processes of catalysis and activation before chemical plating are saved, the time of chemical plating is shortened, and the cost of activation accelerant is saved; in addition, the combination of chemical silver plating and sputtering silver plating also makes up for the defect of insufficient compactness of sputtering silver plating, so that the silver-plated polyester filament has higher practical value.

[0032] 4. Post-treatment: the polyester filament after the treatment of step 3 is subjected to post-treatment such as water washing, application of a protective layer and drying.

[0033] Further, the Al2O3 content in the far-infrared heating polyester DTY is (2000-3000) PPM.

[0034] The Al2O3 powder has very strong absorption and reflection capabilities for far-infrared rays, the absorbed far-infrared rays promote the movement of polyester molecules to form heat energy, and the reflected infrared rays emitted by the human body can act on the human body again to achieve the effect of keeping warm.

[0035] Compared with the prior art, the present application has the following advantages:

[0036] The anti-detection fabric has the following advantages:

[0037] (1) The fabric of the present application is knitted by adopting three-layer French rib structure as the main structure of the fabric, so that the fabric has multiple functions; the main structure of the fabric is combined with a coating layer having electromagnetic wave shielding function and a fabric having waterproof performance, so that the fabric has better functionality.

[0038] (2) The layers of the fabric of the present application not only have their own functions, but also promote each other, so that the functionality of the fabric is more prominent; for example, the shielding layer and the electromagnetic wave interference layer can both have electromagnetic interference and shielding effects; the skin-friendly warm-keeping layer and the shielding layer can both absorb far-infrared rays, and together shield far-infrared imaging.

[0039] (3) The silver-plated polyester filament of the present application adopts the combination of low-temperature plasma treatment, sputtering silver plating and chemical silver plating, which can not only improve the silver plating quality of the silver-plated polyester filament, but also reduce the production cost of the silver-plated polyester filament.

[0040] (4) The fabric body of the present application adopts a knitted structure, which makes the fabric structure more soft, and increases the comfort and skin-friendly feeling of the fabric; the skin-friendly yarn of the skin-friendly and warm layer can adopt blended yarn of cashmere, silk and Tencel, which is more warm and skin-friendly. BRIEF DESCRIPTION OF DRAWINGS

[0041] Figure 1 Fig. 1 is a structural schematic diagram of the fabric of the present application.

[0042] Figure 2 Fig. 2 is a knitting diagram of the fabric body in embodiment 1 of the present application.

[0043] Figure 3 Fig. 3 is a structural schematic diagram of the skin-friendly and warm yarn in embodiment 1 of the present application.

[0044] In the figure, 1 is the fabric body; 2 is the shielding layer; 3 is the waterproof and wear-resistant layer; 4 is the skin-friendly and warm yarn; 11 is the skin-friendly and warm layer; 12 is the antibacterial layer; 13 is the electromagnetic wave interference layer; 41 is the heating yarn core; 42 is the skin-friendly yarn skin; DETAILED DESCRIPTION

[0045] The present application will be further described in detail below with reference to the accompanying drawings, and the embodiments are exemplary and are intended to explain the present application, and should not be understood as a limitation to the present application. The textual description in the present embodiment is corresponding to the drawings, and the description of the orientation is also based on the description of the drawings, and should not be understood as a limitation to the protection scope of the present application.

[0046] Embodiment 1:

[0047] The application discloses an anti-infrared detection fabric, which comprises a fabric body 1, wherein the fabric body 1 comprises a skin-friendly warm layer 11, a bacterium-inhibiting layer 12 and an electromagnetic wave interference layer 13; the skin-friendly warm layer 11, the bacterium-inhibiting layer 12 and the electromagnetic wave interference layer 13 are connected by three-layer French rib knitting; the three-layer French rib knitting comprises a four-way loop-forming system, wherein the first loop-forming system and the third loop-forming system are jointly knitted to form the skin-friendly warm layer 11; the fourth loop-forming system is knitted to form the bacterium-inhibiting layer 12; and the second loop-forming system is knitted to form the electromagnetic wave interference layer 13; an upper end of the electromagnetic wave interference layer 13 is provided with a shielding layer 2; an upper end of the shielding layer 2 is provided with a waterproof and wear-resistant layer 3; the knitted yarns of the first loop-forming system and the third loop-forming system are skin-friendly warm yarns 4; the skin-friendly warm yarns 4 are in a mechanical covering structure and comprise a heating yarn core 41 and a skin-friendly yarn skin 42; the heating yarn core 41 is far-infrared heating polyester DTY with an Al2O3 content of 2000PPM and a filament fineness of 75D; the skin-friendly yarn skin 42 is blended yarn with a fineness of 60S, which is prepared by blending and spinning 50% of deerskin, 45% of Tencel and 5% of mulberry silk; the knitted yarn of the fourth loop-forming system is blended yarn with a fineness of 40S, which is prepared by blending and spinning 5% of silver-chelated chitosan fiber and 95% of polyester fiber; and the knitted yarn of the second loop-forming system is elastic composite yarn which is formed by doubling one SORONA filament with a fineness of 50D and one silver-plated polyester filament with a fineness of 120D.

[0048] The shielding layer 2 of the anti-infrared detection fabric is a nanometer catalyst zinc oxide coating layer with a thickness of 0.2mm-0.4mm; and the waterproof layer 3 is a woven plain fabric with water-repellent ultrahigh molecular weight polyethylene filaments as warp yarns and weft yarns, and the weight ratio of polytetrafluoroethylene in the water-repellent ultrahigh molecular weight polyethylene filaments is 2.5%. The shielding layer 2 and the electromagnetic wave interference layer 13 of the anti-infrared detection fabric are adhesively connected, and the waterproof and wear-resistant layer 3 and the shielding layer 2 are adhesively connected; when adhesion is performed, a mixed adhesive which is prepared by blending water-based polyurethane resin and water-based acrylic resin is used, and the mass ratio of the water-based polyurethane resin to the water-based acrylic resin is 1:1, so that the mixed adhesive can effectively ensure that the shielding layer and the electromagnetic wave interference layer are adhesively connected together.

[0049] After the fabric body 1, the shielding layer 2 and the waterproof and wear-resistant layer 3 of the anti-infrared detection fabric are adhesively connected by using the adhesive, the fabric body 1, the shielding layer 2 and the waterproof and wear-resistant layer 3 are tightly extruded together by a roller press at 70-80 DEG C.

[0050] The preparation method of the silver-plated polyester filament of the elastic composite yarn in the anti-infrared detection fabric is as follows:

[0051] ①Plasma treatment of polyester filament: the polyester filament is threaded between the electrode plates of the atmospheric pressure plasma dielectric barrier discharge, a voltage is applied to ensure that the gas emission power between the electrode plates is 30W; the air medium between the low-temperature plasma discharge electrode plates is argon, and the treatment time of the polyester filament between the discharge electrode plates is 2min.

[0052] ②Vacuum sputtering silver plating: the polyester filament treated in step ① is subjected to vacuum sputtering silver plating treatment:

[0053] Target material: silver

[0054] Excitation gas: argon

[0055] Time: 8min

[0056] Working vacuum / Pa: 0.05

[0057] ③Chemical silver plating: the polyester filament treated in step ② is subjected to chemical silver plating treatment:

[0058] Chemical plating solution composition: 10g / L silver nitrate, 6g / L potassium hydroxide, 60ml / L ammonia salt base, 20ml / L ethylenediamine, 70ml / L sodium thiosulfate

[0059] Plating solution pH: 12-13

[0060] Plating solution temperature / ℃: 30

[0061] Immersion plating time / min: 30

[0062] ④Post-treatment: the polyester filament treated in step ③ is subjected to post-treatment such as water washing, protective layer application and drying.

[0063] In addition to the above embodiments, the present application also includes other embodiments, and any technical solutions formed by equivalent transformation or equivalent replacement shall fall within the protection scope of the claims of the present application.

Claims

1. An infrared detection-resistant fabric, characterized in that, The fabric body (1) includes a skin-friendly and warm layer (11), an antibacterial layer (12), and an electromagnetic interference layer (13). The skin-friendly and warm layer (11), the antibacterial layer (12), and the electromagnetic interference layer (13) are woven together by three layers of French rib knitting. The three layers of French rib knitting include a four-way loop system, wherein the first and third loop systems are woven together to form the skin-friendly and warm layer (11); the fourth loop system is woven to form the antibacterial layer (12); and the second loop system is woven to form the electromagnetic interference layer (13). A shielding layer (2) is provided at the upper end of the electromagnetic interference layer (13); and a waterproof and wear-resistant layer (3) is provided at the upper end of the shielding layer (2). The yarn used for weaving the third loop system is a skin-friendly and warm yarn (4). The skin-friendly and warm yarn (4) has a mechanical covering structure, including a heating yarn core (41) and a skin-friendly yarn skin (42). The heating yarn core (41) is far-infrared heating polyester DTY. The skin-friendly yarn skin (42) is a blended yarn made of 50% by weight of Derong, 45% by weight of Tencel and 5% by weight of mulberry silk. The yarn used for weaving the fourth loop system is a blended yarn made of 5% by weight of silver chelated chitosan fiber and 95% by weight of polyester fiber. The yarn used for weaving the second loop system is an elastic composite yarn made by plying a SORONA filament and a silver-plated polyester filament. The method for preparing the silver-plated polyester filament is as follows: ① Plasma treatment of polyester filament: The polyester filament is passed through the atmospheric pressure plasma medium blocking discharge plate, and a voltage is applied to ensure that the gas emission power between the plates is 30W; the air medium between the low temperature plasma discharge plates is argon, and the treatment time of the polyester filament between the discharge plates is 2min. ② Vacuum sputtering silver plating: The polyester filament treated in step ① is subjected to vacuum sputtering silver plating. Target material: silver Excitation gas: Argon Time: 8-10 min Operating vacuum level (Pa): 0.05 ③ Chemical silver plating: The polyester filament treated in step ② is subjected to chemical silver plating. Plating solution composition: 10 g / L silver nitrate, 6 g / L potassium hydroxide, 60 ml / L ammonium salt, 20 ml / L ethylenediamine, 70 ml / L sodium thiosulfate pH value of plating solution: 12~13 Plating bath temperature / °C: 30~40 Immersion time / min: 15~60 ④ Post-treatment: The polyester filaments treated in step ③ are washed, a protective layer is applied, and they are dried.

2. The infrared detection protection fabric according to claim 1, characterized in that, The shielding layer (2) is a nano-catalytic zinc oxide coating with a thickness of 0.2 mm to 0.4 mm.

3. The infrared detection protection fabric according to claim 1, characterized in that, The waterproof and wear-resistant layer (3) is a plain weave fabric with both warp and weft yarns being water-repellent ultra-high molecular weight polyethylene filaments, one on top of the other.

4. The infrared detection protection fabric according to claim 3, characterized in that, The weight ratio of polytetrafluoroethylene in the water-repellent ultra-high molecular weight polyethylene filament is 2-3%.

5. The infrared detection protection fabric according to claim 1, characterized in that, The shielding layer (2) is bonded to the electromagnetic interference layer (13), and the waterproof and wear-resistant layer (3) is bonded to the shielding layer (2).

6. The infrared detection protection fabric according to claim 1, characterized in that, The main body of the fabric (1), the shielding layer (2) and the waterproof and wear-resistant layer (3) are bonded together with an adhesive and then tightly squeezed together at 70-80°C by a roller press.

7. The infrared detection protection fabric according to claim 1, characterized in that, The far-infrared heating polyester DTY contains 2000-3000 PPM of Al2O3.

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