Anti-multimode reconnaissance equipment shielding cloth

Abstract

The invention discloses an anti-multimode reconnaissance equipment shielding cloth which is made of an electromagnetic wave impedance matching material, a heat insulation material and a sound absorption material, and the electromagnetic wave impedance matching material is formed by compounding a ferromagnetic material, an electromagnetic wave absorption material and a conductive material; the heat insulation material is formed by compounding an insulation material, ceramic fibers and heat insulation foam; the sound absorbing material is formed by compounding a porous material and sound absorbing foam. The comprehensive application of various materials can effectively reduce the reconnaissance capability of multimode reconnaissance equipment to the shielding cloth, and improve the concealment and protection performance of the cloth. By using the anti-multimode reconnaissance equipment shielding cloth, an important application value can be provided for the fields of military affairs, safety, privacy protection and the like.

Description

Technical Field

[0001] The invention relates to the field of reconnaissance technology, and in particular to a multi-mode resistant reconnaissance equipment shielding fabric. Background Art

[0002] With the continuous development of modern multi-mode reconnaissance equipment, in order to improve the concealment and anti-reconnaissance capabilities, the development of anti-multi-mode reconnaissance equipment shielding fabrics has become an important technical challenge. This kind of fabric needs to have functions such as electromagnetic wave impedance matching, heat insulation and sound absorption to reduce or shield the detection capability of multi-mode reconnaissance equipment against its radiation. Summary of the invention

[0003] The purpose of the present invention is to provide a kind of anti-multi-mode reconnaissance equipment shielding cloth.

[0004] To achieve the above object, the present invention is implemented according to the following technical solutions:

[0005] The invention is made of electromagnetic wave impedance matching material, heat insulation material and sound absorption material. The electromagnetic wave impedance matching material is composited by ferromagnetic material, electromagnetic wave absorption material and conductive material; the heat insulation material is composited by insulating material, ceramic fiber and heat insulation foam; the sound absorption material is composited by porous material and sound absorption foam.

[0006] Furthermore, the electromagnetic wave impedance matching material is composited by ferrite, carbon fiber and copper fiber; the heat insulating material is composited by polystyrene (EPS), aluminum silicate fiber and polyurethane foam; and the sound absorbing material is composited by foam plastic and polyester foam.

[0007] Preferably, by weight, the anti-multi-mode reconnaissance equipment shielding fabric contains 50 parts of the ferrite, 30 parts of carbon fiber, 20 parts of copper fiber, 7 parts of polystyrene (EPS), 30 parts of aluminum silicate fiber, 65 parts of polyurethane foam, 40 parts of foam plastic, and 40 parts of polyester foam.

[0008] The method for preparing the anti-multi-mode reconnaissance equipment shielding fabric of the present invention comprises the following steps:

[0009] S1: Put 50 parts of ferrite, 30 parts of carbon fiber, and 20 parts of copper fiber into a mixing container, use a stirrer to mix at low speed for 2 minutes, and then mix at high speed for 5 minutes to ensure uniform mixing;

[0010] S2: prepare a mold of appropriate size according to the size and shape of the required fabric, pour the electromagnetic wave impedance matching material mixed in step S1 into the mold, and use a press to apply pressure to press the material into the required shape and thickness;

[0011] S3: Put the material in the mold into an oven, set the temperature to 200°C, and continue heating for 30 minutes to solidify the material, take out the solidified material, and cool it to room temperature;

[0012] S4: 7 parts of polystyrene (EPS) and 30 parts of aluminum silicate fiber are mixed evenly, poured into a mold, and the material in the mold is placed in an oven, the temperature is set to 150°C, and pressure is applied by a press to press the material into a desired shape and thickness;

[0013] S5: 65 parts of polyurethane foam, 40 parts of foam plastic, and 40 parts of polyester foam are mixed evenly, poured into a mold, and the materials in the mold are placed in an oven, the temperature is set to 85°C, and pressure is applied by a press to press the materials into the desired shape and thickness;

[0014] S6: The material of step S3 is used as a base layer and placed at the bottom of the preparation area; the materials of step S4 and step S5 are placed on top in sequence, the overlapping materials are placed in an oven and heated to 120°C, and pressure is applied with a press until it cools down and then stops applying pressure to obtain a multi-mode reconnaissance equipment shielding fabric.

[0015] The beneficial effects of the present invention are:

[0016] The present invention is a multi-mode reconnaissance equipment shielding fabric. Compared with the prior art, the present invention has the following technical effects:

[0017] Electromagnetic wave impedance matching materials: By using materials such as ferrite, carbon fiber and copper fiber, effective impedance matching of electromagnetic waves emitted by multi-mode reconnaissance equipment can be achieved, thereby reducing the reflection and scattering of electromagnetic waves and reducing the probability of being detected.

[0018] Thermal insulation materials: The use of materials such as polystyrene (EPS) and aluminum silicate fiber can effectively reduce the heat energy transfer between the fabric and the environment, improve the thermal insulation performance of the shielding fabric, and thus reduce the possibility of being detected by infrared radiation.

[0019] Sound-absorbing materials: Using materials such as foam plastics and polyester foam as sound-absorbing layers can reduce the reflection and propagation of sound waves and reduce the probability of being detected by sonar.

[0020] The comprehensive application of multiple materials in the present invention can effectively reduce the reconnaissance capability of multi-mode reconnaissance equipment on the shielding fabric, and improve the concealment and protection performance of the fabric. By using the shielding fabric against multi-mode reconnaissance equipment, it can provide important application value in the fields of military, security and privacy protection. DETAILED DESCRIPTION

[0021] The present invention is further described below with specific examples. The illustrative examples and descriptions of the present invention are used to explain the present invention but are not intended to limit the present invention.

[0022] The present invention is made of electromagnetic wave impedance matching material (reducing reflection and scattering of electromagnetic waves), heat insulation material (reducing thermal infrared radiation) and sound absorbing material (reducing reflection and scattering of sonar signals). The electromagnetic wave impedance matching material is composited by ferromagnetic material, electromagnetic wave absorbing material and conductive material; the heat insulation material is composited by insulating material, ceramic fiber and heat insulation foam; the sound absorbing material is composited by porous material and sound absorbing foam.

[0023] 1. Electromagnetic wave impedance matching effect: The formula of electromagnetic wave impedance matching materials can achieve electromagnetic wave impedance matching with the surrounding environment. This means that the shielding cloth can propagate electromagnetic waves on the electromagnetic wave interface between the shielding cloth and the surrounding medium without reflection. Impedance matching reduces the reflection and scattering of electromagnetic waves, making the shielding cloth present lower signal echo characteristics within the electromagnetic wave frequency band, thereby reducing the probability of being detected.

[0024] 2. Thermal insulation effect: The formula of thermal insulation materials has low thermal conductivity and can effectively prevent the transfer of heat energy. Thermal insulation materials play a role in blocking heat transfer in the shielding fabric, reducing thermal infrared radiation on the surface of the fabric. By reducing the release of heat energy on the surface of the fabric, the thermal insulation effect helps reduce the possibility of the fabric being detected by infrared radiation.

[0025] 3. Sound absorption effect: The formula of the sound-absorbing material has good acoustic sound absorption performance, which can effectively absorb the energy of sound waves and reduce the reflection and propagation of sound waves. The sound-absorbing material in the fabric can reduce the reflection of sound waves, making the sound reflection of the surface of the shielding fabric lower. This helps to reduce the probability of the fabric being detected by sonar.

[0026] By combining electromagnetic wave impedance matching, heat insulation and sound absorption effects, the formula composition in the above embodiment can reduce the probability of detection of the shielding cloth by anti-multi-mode reconnaissance equipment to a certain extent.

[0027] Furthermore, the electromagnetic wave impedance matching material is composited by ferrite, carbon fiber and copper fiber; the heat insulating material is composited by polystyrene (EPS), aluminum silicate fiber and polyurethane foam; and the sound absorbing material is composited by foam plastic and polyester foam.

[0028] Preferably, by weight, the anti-multi-mode reconnaissance equipment shielding fabric contains 50 parts of the ferrite, 30 parts of carbon fiber, 20 parts of copper fiber, 7 parts of polystyrene (EPS), 30 parts of aluminum silicate fiber, 65 parts of polyurethane foam, 40 parts of foam plastic, and 40 parts of polyester foam.

[0029] The method for preparing the anti-multi-mode reconnaissance equipment shielding fabric of the present invention comprises the following steps:

[0030] S1: Put 50 parts of ferrite, 30 parts of carbon fiber, and 20 parts of copper fiber into a mixing container, use a stirrer to mix at low speed for 2 minutes, and then mix at high speed for 5 minutes to ensure uniform mixing;

[0031] S2: prepare a mold of appropriate size according to the size and shape of the required fabric, pour the electromagnetic wave impedance matching material mixed in step S1 into the mold, and use a press to apply pressure to press the material into the required shape and thickness;

[0032] S3: Put the material in the mold into an oven, set the temperature to 200°C, and continue heating for 30 minutes to solidify the material, take out the solidified material, and cool it to room temperature;

[0033] S4: 7 parts of polystyrene (EPS) and 30 parts of aluminum silicate fiber are mixed evenly, poured into a mold, and the material in the mold is placed in an oven, the temperature is set to 150°C, and pressure is applied by a press to press the material into a desired shape and thickness;

[0034] S5: 65 parts of polyurethane foam, 40 parts of foam plastic, and 40 parts of polyester foam are mixed evenly, poured into a mold, and the materials in the mold are placed in an oven, the temperature is set to 85°C, and pressure is applied by a press to press the materials into the desired shape and thickness;

[0035] S6: The material of step S3 is used as a base layer and placed at the bottom of the preparation area; the materials of step S4 and step S5 are placed on top in sequence, the overlapping materials are placed in an oven and heated to 120°C, and pressure is applied with a press until it cools down and then stops applying pressure to obtain a multi-mode reconnaissance equipment shielding fabric.

[0036] Example:

[0037] 1. Material selection:

[0038] -Electromagnetic wave impedance matching materials: ferrite, carbon fiber, copper fiber.

[0039] -Thermal insulation materials: polystyrene (EPS), aluminum silicate fiber.

[0040] -Sound absorbing materials: Foam plastic, polyester foam.

[0041] 2.Material formula and ratio:

[0042] -Electromagnetic wave impedance matching material formula: 50% ferrite + 30% carbon fiber + 20% copper fiber.

[0043] -Thermal insulation material formula: 70% polystyrene + 30% aluminum silicate fiber.

[0044] -Sound absorbing material formula: 60% foam plastic + 40% polyester foam.

[0045] 3. Production process steps:

[0046] 1 Material mixing: Accurately weigh 50 grams of ferrite, 30 grams of carbon fiber, and 20 grams of copper fiber. Put these materials into a mixing container and use a stirrer to mix at low speed for 2 minutes, then at high speed for 5 minutes to ensure uniform mixing.

[0047] 2. Material preparation: Prepare a mold of appropriate size and adjust it according to the size and shape of the cloth. Pour the mixed electromagnetic wave impedance matching material into the mold and use a press to apply appropriate pressure to press the material into the required shape and thickness.

[0048] 3. Material curing: Put the material in the mold into an oven, set the temperature to 200°C, and continue heating for 30 minutes to solidify the material. Take out the solidified material and cool it to room temperature.

[0049] 4 Finished product processing: Use cutting tools to trim the finished product and remove excess edges or irregular parts.

[0050] 5. Mix 70g of polystyrene and 30g of aluminum silicate fiber evenly, pour into a mold, put the material in the mold into an oven, set the temperature to 150°C, and use a press to apply pressure to press the material into the desired shape and thickness;

[0051] 6. Mix 40g of foam plastic and 40g of polyester foam evenly, pour into the mold, put the materials in the mold into an oven, set the temperature to 85°C, and use a press to apply pressure to press the materials into the required shape and thickness;

[0052] 7. Place the electromagnetic wave impedance matching material as the base layer at the bottom of the preparation area; place the heat insulation material and the sound-absorbing material on top in sequence, put the overlapping materials into an oven and heat them to 120°C, apply pressure with a press until it cools down and then stop applying pressure, to obtain the anti-multi-mode reconnaissance equipment shielding fabric.

[0053] experiment:

[0054] Prepare 3 fabric samples, of which sample 1 contains 50% ferrite + 30% carbon fiber + 20% copper fiber; sample 2 contains 40% ferrite + 40% carbon fiber + 20% copper fiber; sample 3 contains 60% ferrite + 20% carbon fiber + 20% copper fiber; all are tested according to the following method:

[0055] Conduct electromagnetic wave impedance test:

[0056] a. Place the fabric sample and the reference fabric sample in the electromagnetic wave testing device respectively.

[0057] b. Test the input power and output power of the electromagnetic wave and calculate the electromagnetic wave impedance (dB).

[0058] c. Record the test results.

[0059] Conduct thermal infrared radiation testing:

[0060] a. Expose the fabric sample and the reference fabric sample to the environment before and after the heat source to ensure the same heat source and environmental conditions.

[0061] b. Use an infrared thermal imager to measure the surface temperature of the fabric sample and the reference fabric sample, and calculate the temperature difference (°C).

[0062] c. Record the test results.

[0063] To perform a sonar reflection test:

[0064] a. Using the sonar testing equipment, send sound wave signals to the fabric sample and the reference fabric sample.

[0065] b. Measure the intensity of the reflected sound wave signal and calculate the reflection coefficient.

[0066] c. Record the test results.

[0067] The test data is as follows:

[0068]

[0069] The electromagnetic wave impedance test result should be the electromagnetic wave impedance value obtained by experimental measurement (in decibels dB). The thermal infrared radiation test result should be the temperature difference between the measured fabric sample and the reference sample (in degrees Celsius °C). The sonar reflection test result should be the sonar reflection coefficient of the measured fabric sample.

[0070] In this process, the electromagnetic wave impedance matching material provides impedance matching performance of the shielding cloth, the heat insulation material provides heat insulation performance, and the sound absorbing material provides sound absorption performance. By stacking and fixing these materials together, a multi-functional anti-multi-mode reconnaissance equipment shielding cloth is formed.

[0071] The technical solution of the present invention is not limited to the above-mentioned specific embodiments. All technical variations made according to the technical solution of the present invention fall within the protection scope of the present invention.

Claims

1. A multi-mode reconnaissance equipment shielding fabric, characterized in that: It is made of electromagnetic wave impedance matching material, heat insulation material and sound absorption material. The electromagnetic wave impedance matching material is composited by ferromagnetic material, electromagnetic wave absorption material and conductive material; the heat insulation material is composited by insulating material, ceramic fiber and heat insulation foam; the sound absorption material is composited by porous material and sound absorption foam.

2. The anti-multi-mode reconnaissance equipment shielding fabric according to claim 1, characterized in that: The electromagnetic wave impedance matching material is composited by ferrite, carbon fiber and copper fiber; the heat insulating material is composited by polystyrene (EPS), aluminum silicate fiber and polyurethane foam; and the sound absorbing material is composited by foam plastic and polyester foam.

3. The anti-multi-mode reconnaissance equipment shielding fabric according to claim 2, characterized in that: In parts by weight, the anti-multi-mode reconnaissance equipment shielding fabric contains 50 parts of ferrite, 30 parts of carbon fiber, 20 parts of copper fiber, 7 parts of polystyrene (EPS), 30 parts of aluminum silicate fiber, 65 parts of polyurethane foam, 40 parts of foam plastic, and 40 parts of polyester foam.

4. The anti-multi-mode reconnaissance equipment shielding fabric according to claim 2 or 3, characterized in that: The method for preparing the anti-multi-mode reconnaissance equipment shielding fabric comprises the following steps: S1: Put 50 parts of ferrite, 30 parts of carbon fiber, and 20 parts of copper fiber into a mixing container, use a stirrer to mix at low speed for 2 minutes, and then mix at high speed for 5 minutes to ensure uniform mixing; S2: prepare a mold of appropriate size according to the size and shape of the required fabric, pour the electromagnetic wave impedance matching material mixed in step S1 into the mold, and use a press to apply pressure to press the material into the required shape and thickness; S3: Put the material in the mold into an oven, set the temperature to 200°C, and continue heating for 30 minutes to solidify the material, take out the solidified material, and cool it to room temperature; S4: 7 parts of polystyrene (EPS) and 30 parts of aluminum silicate fiber are mixed evenly, poured into a mold, and the material in the mold is placed in an oven, the temperature is set to 150°C, and pressure is applied by a press to press the material into a desired shape and thickness; S5: 65 parts of polyurethane foam, 40 parts of foam plastic, and 40 parts of polyester foam are mixed evenly, poured into a mold, and the materials in the mold are placed in an oven, the temperature is set to 85°C, and pressure is applied by a press to press the materials into the desired shape and thickness; S6: The material of step S3 is used as a base layer and placed at the bottom of the preparation area; the materials of step S4 and step S5 are placed on top in sequence, the overlapping materials are placed in an oven and heated to 120°C, and pressure is applied with a press until it cools down and then stops applying pressure to obtain a multi-mode reconnaissance equipment shielding fabric.

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