Military anti-infrared electromagnetic shielding intelligent stealth fabric and preparation method thereof

Abstract

The invention discloses a military anti-infrared electromagnetic shielding intelligent stealth fabric, and relates to the technical field of intelligent fabrics, the military anti-infrared electromagnetic shielding intelligent stealth fabric comprises an aramid fiber base layer, an electromagnetic shielding layer, an anti-infrared composite layer, a functional layer and an induction adjustment integration module, the outer side of the aramid fiber base layer is provided with the electromagnetic shielding layer, and the electromagnetic shielding layer is arranged on the outer side of the functional layer; an anti-infrared composite layer is arranged on the outer side of the electromagnetic shielding layer, and an induction adjustment integrated module is arranged on the outer side of the aramid fiber base layer. The anti-infrared composite layer is arranged on the outer side of the electromagnetic shielding layer, graphene forms an isolation layer to reflect infrared rays emitted by a human body and effectively guide energy of electromagnetic waves so as to achieve electromagnetic shielding, and diethylene glycol monobutyl ether is beneficial to uniform dispersion of graphene in the water-based acrylic emulsion; the titanium oxide powder with low emissivity and the cobalt ion doping amount of 1.3% is selected for the infrared stealth layer, infrared radiation is reduced, and it is avoided that the infrared stealth layer is found by an infrared detector.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent fabrics, and in particular to a military anti-infrared electromagnetic shielding intelligent stealth fabric and a preparation method thereof. Background Art

[0002] Military anti-infrared electromagnetic shielding intelligent stealth fabric is a high-performance fabric that integrates anti-infrared, electromagnetic shielding and possible intelligent sensing functions. The fabric is designed to reduce the risk of military targets being discovered by enemy infrared detectors and electromagnetic reconnaissance equipment. It can effectively reduce the target's infrared radiation characteristics, shield electromagnetic wave interference, and achieve intelligent stealth effects while maintaining the durability and comfort of the fabric, thereby improving the concealment and safety of military targets.

[0003] The defects of the stealth fabric in the prior art are: 1. Patent document CN104990459B discloses a radar infrared stealth integrated composite stealth tarpaulin and a preparation method thereof. The material in the radar infrared stealth layer of the composite stealth tarpaulin is unevenly dispersed, which cannot ensure the stable infrared protection performance of the stealth tarpaulin when in use, and cannot match the thermal infrared emissivity of the fabric surface with the infrared radiation characteristics of the surrounding environment, resulting in poor stealth protection effect.

[0004] 2. Patent document CN116024806A discloses a graphene infrared stealth fabric, a preparation method and infrared stealth outdoor clothing. The material in the composite coating of the stealth fabric is unevenly dispersed and cannot ensure the stable infrared protection performance of the stealth outdoor clothing when used. The thermal infrared emissivity of the fabric surface cannot match the infrared radiation characteristics of the surrounding environment, and the stealth protection effect is poor.

[0005] 3. Patent document CN107554014B discloses heat-proof infrared reconnaissance stealth fabric and its manufacturing method. The stealth fabric cannot automatically adjust the temperature and humidity environmental conditions of the fabric according to the changes in the fabric environment so that the fabric can adapt to different climates and combat environments and maintain stable performance, and has poor ability to resist enemy electromagnetic interference and reconnaissance.

[0006] 4. Patent document CN204949572U discloses an infrared-proof invisible fabric for military combat uniforms. The invisible fabric cannot automatically adjust the temperature and humidity conditions of the fabric according to changes in the fabric environment so that the fabric can adapt to different climates and combat environments and maintain stable performance, and has poor ability to resist enemy electromagnetic interference and reconnaissance. Summary of the invention

[0007] The purpose of the present invention is to provide a military anti-infrared electromagnetic shielding intelligent stealth fabric and a preparation method thereof, so as to solve the problems raised in the above-mentioned background technology.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a military anti-infrared electromagnetic shielding intelligent stealth fabric, comprising an aramid fiber base layer, an electromagnetic shielding layer, an anti-infrared composite layer, a functional layer and an induction adjustment integrated module, the electromagnetic shielding layer is arranged on the outside of the aramid fiber base layer, the anti-infrared composite layer is arranged on the outside of the electromagnetic shielding layer, the functional layer is arranged on the outside of the anti-infrared composite layer, and the induction adjustment integrated module is arranged on the outside of the aramid fiber base layer.

[0009] Preferably, the electromagnetic shielding layer, the infrared protection composite layer and the functional layer are bonded together by acrylic resin.

[0010] Preferably, the infrared protection composite layer includes a graphene base layer and a MXene stabilizing layer, and the MXene stabilizing layer is arranged on the outside of the graphene base layer.

[0011] Preferably, the functional layer comprises a flame retardant layer, a hydrophobic layer and a wear-resistant layer, the hydrophobic layer is arranged on the outside of the flame retardant layer, and the wear-resistant layer is arranged on the outside of the hydrophobic layer.

[0012] Preferably, the sensing and regulating integrated module includes an integrated slot, an embedded processor, a temperature and humidity sensing sensor, a temperature control execution unit and a humidity control execution unit. The integrated slot is opened on the outside of the aramid fiber base layer, the embedded processor is installed on the inside of the integrated slot, the temperature control execution unit and the humidity control execution unit are respectively installed on the inside of the integrated slot, and a power storage module is also installed on the inside of the integrated slot.

[0013] Preferably, the temperature control execution unit is a heater, the humidity control execution unit includes a humidifier and a dehumidifier, the temperature and humidity sensing sensor is installed on the outside of the aramid fiber base layer, and the temperature and humidity sensing sensor is electrically connected to the embedded processor.

[0014] A method for preparing a military anti-infrared electromagnetic shielding intelligent stealth fabric is applicable to a military anti-infrared electromagnetic shielding intelligent stealth fabric. Preferably, the method comprises the following steps: 1. pretreatment of the base layer; 2. filling of the integrated module; 3. preparation and coating of the anti-infrared composite layer; 4. composite of the multi-layer structure; 5. post-processing drying and shaping.

[0015] Preferably, the base layer pretreatment steps are as follows: the aramid fiber base layer is cleaned, degreased, and desized to ensure the adhesion and uniformity of the subsequent coating.

[0016] Preferably, the integrated module filling steps are as follows: use a convex-concave grooving machine to press out multiple sets of integrated grooves on the aramid fiber base layer, place the embedded processor, the temperature control execution unit and the humidity control execution unit in the integrated grooves respectively and fix them with adhesive, and use adhesive to install the temperature and humidity sensing sensors on the outside of the aramid fiber base layer.

[0017] Preferably, the steps of preparing and coating the infrared-proof composite layer are as follows: Step (1) graphene slurry preparation: by weight, 100 parts of diethylene glycol butyl ether, 50-75 parts of graphene and 10-15 parts of aqueous acrylic emulsion are put into a mixer and uniformly mixed, and the mixture is mixed and stirred at 45°C for 10-15 minutes at a speed of 300 r / min to form a graphene slurry; Step (2) MXene slurry preparation: MXene is mixed with titanium oxide powder with a cobalt ion doping amount of 1.3% and water to form a solution, and an adhesive and a thickener are added to form a stable slurry; Step (3) slurry coating: a carbon fiber dispersion, graphene slurry and MXene slurry are sequentially coated on an aramid fiber base layer using a flat screen printing machine, and the drying temperature of the drying machine is controlled at 80-140°C for a drying time of 10-30 minutes to ensure that the coating is uniformly and firmly attached to the aramid fiber, and an electromagnetic shielding layer and an infrared-proof composite layer are formed on the outside of the aramid fiber base layer.

[0018] Preferably, the multilayer structure composite steps are as follows: a flame retardant coating and a fluorocarbon compound are further coated on the outside of the infrared protection composite layer in sequence using a flat screen printing machine to form a flame retardant layer and a hydrophobic layer, and the polyamide fiber layer is bonded to the outer surface of the hydrophobic layer by an adhesive.

[0019] Preferably, the post-processing drying and shaping steps are as follows: use a hot press to compact the coated multi-layer composite structure to ensure that the layers are tightly bonded, the pressure is controlled at 10MPa to 60MPa, and hot pressing is performed at a constant temperature of 200°C for 2min to 3min, and a curing treatment is performed to fully cure the composite coating and the adhesive and enhance adhesion.

[0020] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention provides an infrared-proof composite layer on the outer side of the electromagnetic shielding layer. Graphene radiates heat in the form of radiation and forms an isolation layer on the surface of the fabric due to its excellent conductive properties, which reflects infrared rays emitted by the human body and effectively guides the energy of electromagnetic waves to achieve electromagnetic shielding. Diethylene glycol butyl ether helps to evenly disperse graphene in the aqueous acrylic emulsion, thereby ensuring that the infrared-proof coating has uniform and stable performance. The carbon fiber dispersion is used to further block the propagation of electromagnetic waves, realize reflection and absorption of electromagnetic waves, thereby reducing the penetration ability of electromagnetic waves. Titanium oxide powder with low emissivity and a cobalt ion doping amount of 1.3% is selected for the infrared stealth layer, and the thermal infrared emissivity of the fabric surface is reduced to match the infrared radiation characteristics of the surrounding environment, thereby reducing infrared radiation and avoiding it from being detected by infrared detectors.

[0021] 2. The present invention provides an induction and adjustment integrated module on the outside of the aramid fiber base layer. The induction and adjustment integrated module monitors the state of the fabric in real time, promptly detects changes in the fabric environment and automatically adjusts to ensure that the fabric is always in the best state, which helps to extend the service life of the fabric and thus improve its durability. It automatically adjusts the temperature and humidity environmental conditions of the fabric so that the fabric can adapt to different climates and combat environments and maintain stable performance, further reduces the infrared radiation of the fabric and thus improves its stealth effect. The integration of intelligent sensing elements and the automatic adjustment mechanism help to optimize the electromagnetic shielding performance of the fabric so that it can better resist enemy electromagnetic interference and reconnaissance, reduce manual intervention, and improve the automation and intelligence level of combat, which helps to reduce combat costs and improve combat efficiency. It automatically adjusts the environmental conditions of the fabric to provide military personnel with a more comfortable working environment and reduce discomfort and fatigue caused by extreme climate conditions, thereby ensuring the health of military personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the fabric of the present invention; Figure 2 This is a schematic diagram of the internal structure of the front side of the fabric of the present invention; Figure 3 The figure is a process flow chart of the preparation of the intelligent stealth fabric of the present invention.

[0023] In the figure: 1. Aramid fiber base layer; 2. Electromagnetic shielding layer; 3. Anti-infrared composite layer; 4. Functional layer; 6. Graphene base layer; 7. MXene stabilization layer; 8. Flame retardant layer; 9. Hydrophobic layer; 10. Wear-resistant layer; 11. Integrated groove; 12. Embedded processor; 13. Temperature and humidity sensing sensor; 14. Temperature control execution unit; 15. Humidity control execution unit. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection or a movable connection, or a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] Embodiment 1, an embodiment provided by the present invention: a military anti-infrared electromagnetic shielding intelligent stealth fabric, comprising an aramid fiber base layer 1, an electromagnetic shielding layer 2, a graphene layer and a functional layer 4, the electromagnetic shielding layer 2 is arranged on the outer side of the aramid fiber base layer 1, the graphene layer is arranged on the outer side of the electromagnetic shielding layer 2, the functional layer 4 is arranged on the outer side of the graphene layer, and the induction adjustment integrated module is arranged on the outer side of the aramid fiber base layer 1; The electromagnetic shielding layer 2, the graphene layer and the functional layer 4 are bonded together by acrylic resin respectively. The functional layer 4 includes a flame retardant layer 8, a hydrophobic layer 9 and a wear-resistant layer 10. The hydrophobic layer 9 is arranged on the outside of the flame retardant layer 8, and the wear-resistant layer 10 is arranged on the outside of the hydrophobic layer 9.

[0028] The preparation method of the military anti-infrared electromagnetic shielding intelligent stealth fabric comprises the following steps: 1. pretreatment of the base layer; 2. coating of the graphene layer; 3. composite of the multilayer structure; 4. post-treatment drying and shaping; The steps of pretreatment of the base layer are as follows: cleaning, degreasing, and desizing the aramid fiber base layer 1 to ensure the adhesion and uniformity of the subsequent coating; The steps of coating the graphene layer are as follows: a flat screen printing machine is used to sequentially coat the carbon fiber dispersion and the graphene slurry on the aramid fiber base layer 1, the drying temperature of the drying machine is controlled at 80-140°C, and the drying time is 10-30 minutes to ensure that the coating is evenly and firmly attached to the aramid fiber, and an electromagnetic shielding layer 2 and a graphene layer are formed on the outside of the aramid fiber base layer 1; The steps of compounding the multilayer structure are as follows: using a flat screen printing machine to further coat the flame retardant coating and the fluorocarbon compound on the outer side of the graphene layer in sequence to form a flame retardant layer 8 and a hydrophobic layer 9, and bonding the polyamide fiber layer to the outer surface of the hydrophobic layer 9 by an adhesive; The post-processing drying and shaping steps are as follows: Use a hot press to compact the coated multi-layer composite structure to ensure that the layers are tightly bonded, control the pressure at 10MPa to 60MPa, and hot press for 2min to 3min at a constant temperature of 200°C to perform a curing treatment to fully cure the composite coating and the adhesive and enhance adhesion.

[0029] Embodiment 2, an embodiment provided by the present invention: a military infrared-proof electromagnetic shielding intelligent stealth fabric, comprising an aramid fiber base layer 1, an electromagnetic shielding layer 2, an infrared-proof composite layer 3 and a functional layer 4, wherein the electromagnetic shielding layer 2 is disposed on the outer side of the aramid fiber base layer 1, the infrared-proof composite layer 3 is disposed on the outer side of the electromagnetic shielding layer 2, and the infrared-proof composite layer 3 is disposed on the outer side of the functional layer 4; The electromagnetic shielding layer 2, the infrared protection composite layer 3 and the functional layer 4 are bonded together by acrylic resin respectively. The infrared protection composite layer 3 includes a graphene base layer 6 and a MXene stabilizing layer 7. The MXene stabilizing layer 7 is arranged on the outside of the graphene base layer 6. The functional layer 4 includes a flame retardant layer 8, a hydrophobic layer 9 and a wear-resistant layer 10. The hydrophobic layer 9 is arranged on the outside of the flame retardant layer 8, and the wear-resistant layer 10 is arranged on the outside of the hydrophobic layer 9.

[0030] The preparation method of the military anti-infrared electromagnetic shielding intelligent stealth fabric comprises the following steps: 1. pretreatment of the base layer; 2. preparation and coating of the anti-infrared composite layer; 3. composite of the multi-layer structure; 4. post-treatment drying and shaping; The steps of pretreatment of the base layer are as follows: cleaning, degreasing, and desizing the aramid fiber base layer 1 to ensure the adhesion and uniformity of the subsequent coating; The steps of preparing and coating the infrared-proof composite layer are as follows: 1. Preparation of graphene slurry: by weight, 50 to 75 parts of graphene and 10 to 15 parts of aqueous acrylic emulsion are put into a mixer and mixed evenly, and mixed and stirred at 45°C for 10 to 15 minutes at a speed of 300r / min to form a graphene slurry; 2. Preparation of MXene slurry: MXene is mixed with water to form a solution, and an adhesive and a thickener are added to form a stable slurry; 3. Slurry coating: a flat screen printing machine is used to sequentially coat the carbon fiber dispersion, graphene slurry and MXene slurry on the aramid fiber base layer 1, and the drying temperature of the drying machine is controlled at 80 to 140°C for 10 to 30 minutes to ensure that the coating is evenly and firmly attached to the aramid fiber, and an electromagnetic shielding layer 2 and an infrared-proof composite layer 3 are formed on the outside of the aramid fiber base layer 1; The steps of compounding the multilayer structure are as follows: using a flat screen printing machine to further coat the flame retardant coating and the fluorocarbon compound on the outer side of the infrared protection composite layer 3 in sequence to form a flame retardant layer 8 and a hydrophobic layer 9, and bonding the polyamide fiber layer to the outer surface of the hydrophobic layer 9 by an adhesive; The post-processing drying and shaping steps are as follows: Use a hot press to compact the coated multi-layer composite structure to ensure that the layers are tightly bonded, control the pressure at 10MPa to 60MPa, and hot press for 2min to 3min at a constant temperature of 200°C to perform a curing treatment to fully cure the composite coating and the adhesive and enhance adhesion.

[0031] Embodiment 3, an embodiment provided by the present invention: a military infrared-proof electromagnetic shielding intelligent stealth fabric, comprising an aramid fiber base layer 1, an electromagnetic shielding layer 2, an infrared-proof composite layer 3 and a functional layer 4, wherein the electromagnetic shielding layer 2 is disposed on the outer side of the aramid fiber base layer 1, the infrared-proof composite layer 3 is disposed on the outer side of the electromagnetic shielding layer 2, and the infrared-proof composite layer 3 is disposed on the outer side of the functional layer 4; The electromagnetic shielding layer 2, the infrared protection composite layer 3 and the functional layer 4 are bonded together by acrylic resin respectively. The infrared protection composite layer 3 includes a graphene base layer 6 and a MXene stabilizing layer 7. The MXene stabilizing layer 7 is arranged on the outside of the graphene base layer 6. The functional layer 4 includes a flame retardant layer 8, a hydrophobic layer 9 and a wear-resistant layer 10. The hydrophobic layer 9 is arranged on the outside of the flame retardant layer 8, and the wear-resistant layer 10 is arranged on the outside of the hydrophobic layer 9.

[0032] The preparation method of the military anti-infrared electromagnetic shielding intelligent stealth fabric comprises the following steps: 1. pretreatment of the base layer; 2. preparation and coating of the anti-infrared composite layer; 3. composite of the multi-layer structure; 4. post-treatment drying and shaping; The steps of pretreatment of the base layer are as follows: cleaning, degreasing, and desizing the aramid fiber base layer 1 to ensure the adhesion and uniformity of the subsequent coating; The preparation and coating steps of the infrared-proof composite layer are as follows: 1. Preparation of graphene slurry: by weight, 100 parts of diethylene glycol butyl ether, 50-75 parts of graphene and 10-15 parts of aqueous acrylic emulsion are put into a mixer and mixed evenly, mixed and stirred at 45°C for 10-15 minutes, and the speed is 300r / min to form a graphene slurry; 2. Preparation of MXene slurry: MXene is mixed with titanium oxide powder with a cobalt ion doping amount of 1.3% and water to form a solution, and an adhesive and a thickener are added to form a stable slurry; 3. Slurry coating: a flat screen printing machine is used to sequentially coat the carbon fiber dispersion, graphene slurry and MXene slurry on the aramid fiber base layer 1, and the drying temperature of the drying machine is controlled at 80-140°C, and the drying time is 10-30 minutes to ensure that the coating is evenly and firmly attached to the aramid fiber, and an electromagnetic shielding layer 2 and an infrared-proof composite layer 3 are formed on the outside of the aramid fiber base layer 1; The steps of compounding the multilayer structure are as follows: using a flat screen printing machine to further coat the flame retardant coating and the fluorocarbon compound on the outer side of the infrared protection composite layer 3 in sequence to form a flame retardant layer 8 and a hydrophobic layer 9, and bonding the polyamide fiber layer to the outer surface of the hydrophobic layer 9 by an adhesive; The post-processing drying and shaping steps are as follows: Use a hot press to compact the coated multi-layer composite structure to ensure that the layers are tightly bonded, control the pressure at 10MPa to 60MPa, and hot press for 2min to 3min at a constant temperature of 200°C to perform a curing treatment to fully cure the composite coating and the adhesive and enhance adhesion.

[0033] Embodiment 4, an embodiment provided by the present invention: a military anti-infrared electromagnetic shielding intelligent stealth fabric, comprising an aramid fiber base layer 1, an electromagnetic shielding layer 2, an anti-infrared composite layer 3, a functional layer 4 and an induction adjustment integrated module, the electromagnetic shielding layer 2 is arranged on the outer side of the aramid fiber base layer 1, the anti-infrared composite layer 3 is arranged on the outer side of the electromagnetic shielding layer 2, the functional layer 4 is arranged on the outer side of the anti-infrared composite layer 3, and the induction adjustment integrated module is arranged on the outer side of the aramid fiber base layer 1; The electromagnetic shielding layer 2, the infrared-proof composite layer 3 and the functional layer 4 are bonded by acrylic resin respectively. The infrared-proof composite layer 3 includes a graphene base layer 6 and a MXene stabilizing layer 7. The MXene stabilizing layer 7 is arranged on the outside of the graphene base layer 6. The functional layer 4 includes a flame retardant layer 8, a hydrophobic layer 9 and a wear-resistant layer 10. The hydrophobic layer 9 is arranged on the outside of the flame retardant layer 8, and the wear-resistant layer 10 is arranged on the outside of the hydrophobic layer 9. The sensing and regulating integrated module includes an integrated slot 11, a embedded processor 12, a temperature and humidity sensing sensor 13, and a temperature control execution unit 1 4 and a humidity control execution unit 15, the integrated tank 11 is arranged on the outside of the aramid fiber base layer 1, the embedded processor 12 is installed on the inside of the integrated tank 11, the temperature control execution unit 14 and the humidity control execution unit 15 are respectively installed on the inside of the integrated tank 11, a power storage module is also installed on the inside of the integrated tank 11, the temperature control execution unit 14 is a heater, the humidity control execution unit 15 includes a humidifier and a dehumidifier, the temperature and humidity sensing sensor 13 is installed on the outside of the aramid fiber base layer 1, and the temperature and humidity sensing sensor 13 is electrically connected to the embedded processor 12.

[0034] The preparation method of the military anti-infrared electromagnetic shielding intelligent stealth fabric includes the following steps: 1. pretreatment of the base layer; 2. filling of the integrated module; 3. preparation and coating of the anti-infrared composite layer; 4. composite of the multi-layer structure; 5. post-treatment drying and shaping; The steps of pretreatment of the base layer are as follows: cleaning, degreasing, and desizing the aramid fiber base layer 1 to ensure the adhesion and uniformity of the subsequent coating; The steps of filling the integrated module are as follows: a plurality of integrated grooves 11 are pressed on the aramid fiber base layer 1 using a groove pressing machine, and the embedded processor 12, the temperature control execution unit 14 and the humidity control execution unit 15 are respectively placed in the integrated grooves 11 and fixed by adhesive, and the temperature and humidity sensing sensor 13 is installed on the outside of the aramid fiber base layer 1 using adhesive; The preparation and coating steps of the infrared-proof composite layer are as follows: 1. Preparation of graphene slurry: by weight, 100 parts of diethylene glycol butyl ether, 50-75 parts of graphene and 10-15 parts of aqueous acrylic emulsion are put into a mixer and mixed evenly, mixed and stirred at 45°C for 10-15 minutes, and the speed is 300r / min to form a graphene slurry; 2. Preparation of MXene slurry: MXene is mixed with titanium oxide powder with a cobalt ion doping amount of 1.3% and water to form a solution, and an adhesive and a thickener are added to form a stable slurry; 3. Slurry coating: a flat screen printing machine is used to sequentially coat the carbon fiber dispersion, graphene slurry and MXene slurry on the aramid fiber base layer 1, and the drying temperature of the drying machine is controlled at 80-140°C, and the drying time is 10-30 minutes to ensure that the coating is evenly and firmly attached to the aramid fiber, and an electromagnetic shielding layer 2 and an infrared-proof composite layer 3 are formed on the outside of the aramid fiber base layer 1; The steps of compounding the multilayer structure are as follows: using a flat screen printing machine to further coat the flame retardant coating and the fluorocarbon compound on the outer side of the infrared protection composite layer 3 in sequence to form a flame retardant layer 8 and a hydrophobic layer 9, and bonding the polyamide fiber layer to the outer surface of the hydrophobic layer 9 by an adhesive; The post-treatment drying and shaping steps are as follows: use a hot press to compact the coated multi-layer composite structure to ensure that each layer is tightly bonded, the pressure is controlled at 10MPa to 60MPa, and hot press at a constant temperature of 200°C for 2min to 3min to perform a curing treatment to fully cure the composite coating and the adhesive and enhance the adhesion; When the fabric is used in an environment of 25°C, the sensing and adjustment integrated module works, and the embedded processor receives signals from the temperature and humidity sensing sensors, and performs decoding, filtering and amplification on the signals to obtain accurate monitoring data; the monitored data is compared with the preset threshold value or standard to determine whether the fabric state is within the normal range; based on the comparison results, the embedded processor formulates an adjustment strategy to determine the environmental conditions that need to be adjusted and the target values ​​for adjustment; the appropriate temperature adjustment execution unit or humidity adjustment execution unit is selected according to the adjustment requirements, and the embedded processor sends a control signal to the execution unit, and the execution unit performs heating, humidification or dehumidification operations according to the control signal to adjust the environmental conditions of the fabric; the temperature and humidity sensing sensors continue to monitor the fabric state and feed back new data to the embedded processor, and the adjustment strategy is adjusted and optimized according to the new monitoring data to ensure that the fabric state always remains within the optimal range.

[0035] Embodiment 5, an embodiment provided by the present invention: a military infrared-proof electromagnetic shielding intelligent stealth fabric, comprising an aramid fiber base layer 1, an electromagnetic shielding layer 2, an infrared-proof composite layer 3 and a functional layer 4, wherein the electromagnetic shielding layer 2 is disposed on the outer side of the aramid fiber base layer 1, the infrared-proof composite layer 3 is disposed on the outer side of the electromagnetic shielding layer 2, and the infrared-proof composite layer 3 is disposed on the outer side of the functional layer 4; The electromagnetic shielding layer 2, the infrared protection composite layer 3 and the functional layer 4 are bonded together by acrylic resin respectively. The infrared protection composite layer 3 includes a graphene base layer 6 and a MXene stabilizing layer 7. The MXene stabilizing layer 7 is arranged on the outside of the graphene base layer 6. The functional layer 4 includes a flame retardant layer 8, a hydrophobic layer 9 and a wear-resistant layer 10. The hydrophobic layer 9 is arranged on the outside of the flame retardant layer 8, and the wear-resistant layer 10 is arranged on the outside of the hydrophobic layer 9.

[0036] The preparation method of the military anti-infrared electromagnetic shielding intelligent stealth fabric comprises the following steps: 1. pretreatment of the base layer; 2. preparation and coating of the anti-infrared composite layer; 3. composite of the multi-layer structure; 4. post-treatment drying and shaping; The steps of pretreatment of the base layer are as follows: cleaning, degreasing, and desizing the aramid fiber base layer 1 to ensure the adhesion and uniformity of the subsequent coating; The preparation and coating steps of the infrared-proof composite layer are as follows: 1. Preparation of graphene slurry: by weight, 100 parts of diethylene glycol butyl ether, 50-75 parts of graphene and 10-15 parts of aqueous acrylic emulsion are put into a mixer and mixed evenly, mixed and stirred at 45°C for 10-15 minutes, and the speed is 300r / min to form a graphene slurry; 2. Preparation of MXene slurry: MXene is mixed with titanium oxide powder with a cobalt ion doping amount of 1.3% and water to form a solution, and an adhesive and a thickener are added to form a stable slurry; 3. Slurry coating: a flat screen printing machine is used to sequentially coat the carbon fiber dispersion, graphene slurry and MXene slurry on the aramid fiber base layer 1, and the drying temperature of the drying machine is controlled at 80-140°C, and the drying time is 10-30 minutes to ensure that the coating is evenly and firmly attached to the aramid fiber, and an electromagnetic shielding layer 2 and an infrared-proof composite layer 3 are formed on the outside of the aramid fiber base layer 1; The steps of compounding the multilayer structure are as follows: using a flat screen printing machine to further coat the flame retardant coating and the fluorocarbon compound on the outer side of the infrared protection composite layer 3 in sequence to form a flame retardant layer 8 and a hydrophobic layer 9, and bonding the polyamide fiber layer to the outer surface of the hydrophobic layer 9 by an adhesive; The post-processing drying and shaping steps are as follows: Use a hot press to compact the coated multi-layer composite structure to ensure that the layers are tightly bonded, control the pressure at 10MPa to 60MPa, and hot press for 2min to 3min at a constant temperature of 200°C to perform a curing treatment to fully cure the composite coating and the adhesive and enhance adhesion.

[0037] Embodiment 6, an embodiment provided by the present invention: a military anti-infrared electromagnetic shielding intelligent stealth fabric, comprising an aramid fiber base layer 1, an electromagnetic shielding layer 2, an anti-infrared composite layer 3, a functional layer 4 and an induction adjustment integrated module, the electromagnetic shielding layer 2 is arranged on the outer side of the aramid fiber base layer 1, the anti-infrared composite layer 3 is arranged on the outer side of the electromagnetic shielding layer 2, the functional layer 4 is arranged on the outer side of the anti-infrared composite layer 3, and the induction adjustment integrated module is arranged on the outer side of the aramid fiber base layer 1; The electromagnetic shielding layer 2, the infrared-proof composite layer 3 and the functional layer 4 are bonded by acrylic resin respectively. The infrared-proof composite layer 3 includes a graphene base layer 6 and a MXene stabilizing layer 7. The MXene stabilizing layer 7 is arranged on the outside of the graphene base layer 6. The functional layer 4 includes a flame retardant layer 8, a hydrophobic layer 9 and a wear-resistant layer 10. The hydrophobic layer 9 is arranged on the outside of the flame retardant layer 8, and the wear-resistant layer 10 is arranged on the outside of the hydrophobic layer 9. The sensing and regulating integrated module includes an integrated slot 11, a embedded processor 12, a temperature and humidity sensing sensor 13, and a temperature control execution unit 1 4 and a humidity control execution unit 15, the integrated tank 11 is arranged on the outside of the aramid fiber base layer 1, the embedded processor 12 is installed on the inside of the integrated tank 11, the temperature control execution unit 14 and the humidity control execution unit 15 are respectively installed on the inside of the integrated tank 11, a power storage module is also installed on the inside of the integrated tank 11, the temperature control execution unit 14 is a heater, the humidity control execution unit 15 includes a humidifier and a dehumidifier, the temperature and humidity sensing sensor 13 is installed on the outside of the aramid fiber base layer 1, and the temperature and humidity sensing sensor 13 is electrically connected to the embedded processor 12.

[0038] The preparation method of the military anti-infrared electromagnetic shielding intelligent stealth fabric comprises the following steps: 1. pretreatment of the base layer; 2. filling of the integrated module; 3. preparation and coating of the anti-infrared composite layer; 4. composite of the multi-layer structure; 5. post-treatment drying and shaping; The steps of pretreatment of the base layer are as follows: cleaning, degreasing, and desizing the aramid fiber base layer 1 to ensure the adhesion and uniformity of the subsequent coating; The steps of filling the integrated module are as follows: a plurality of integrated grooves 11 are pressed on the aramid fiber base layer 1 using a groove pressing machine, and the embedded processor 12, the temperature control execution unit 14 and the humidity control execution unit 15 are respectively placed in the integrated grooves 11 and fixed by adhesive, and the temperature and humidity sensing sensor 13 is installed on the outside of the aramid fiber base layer 1 using adhesive; The preparation and coating steps of the infrared-proof composite layer are as follows: 1. Preparation of graphene slurry: by weight, 100 parts of diethylene glycol butyl ether, 50-75 parts of graphene and 10-15 parts of aqueous acrylic emulsion are put into a mixer and mixed evenly, mixed and stirred at 45°C for 10-15 minutes, and the speed is 300r / min to form a graphene slurry; 2. Preparation of MXene slurry: MXene is mixed with titanium oxide powder with a cobalt ion doping amount of 1.3% and water to form a solution, and an adhesive and a thickener are added to form a stable slurry; 3. Slurry coating: a flat screen printing machine is used to sequentially coat the carbon fiber dispersion, graphene slurry and MXene slurry on the aramid fiber base layer 1, and the drying temperature of the drying machine is controlled at 80-140°C, and the drying time is 10-30 minutes to ensure that the coating is evenly and firmly attached to the aramid fiber, and an electromagnetic shielding layer 2 and an infrared-proof composite layer 3 are formed on the outside of the aramid fiber base layer 1; The steps of compounding the multilayer structure are as follows: using a flat screen printing machine to further coat the flame retardant coating and the fluorocarbon compound on the outer side of the infrared protection composite layer 3 in sequence to form a flame retardant layer 8 and a hydrophobic layer 9, and bonding the polyamide fiber layer to the outer surface of the hydrophobic layer 9 by an adhesive; The post-treatment drying and shaping steps are as follows: use a hot press to compact the coated multi-layer composite structure to ensure that each layer is tightly bonded, the pressure is controlled at 10MPa to 60MPa, and hot press at a constant temperature of 200°C for 2min to 3min to perform a curing treatment to fully cure the composite coating and the adhesive and enhance the adhesion; When the fabric is used in an environment of 5°C, the sensing and adjustment integrated module works, and the embedded processor receives signals from the temperature and humidity sensing sensors, and performs decoding, filtering and amplification on the signals to obtain accurate monitoring data; the monitored data is compared with the preset threshold value or standard to determine whether the fabric state is within the normal range; based on the comparison results, the embedded processor formulates an adjustment strategy to determine the environmental conditions that need to be adjusted and the target values ​​for adjustment; the appropriate temperature adjustment execution unit or humidity adjustment execution unit is selected according to the adjustment requirements, and the embedded processor sends a control signal to the execution unit, and the execution unit performs heating, humidification or dehumidification operations according to the control signal to adjust the environmental conditions of the fabric; the temperature and humidity sensing sensors continue to monitor the fabric state and feed back new data to the embedded processor, and the adjustment strategy is adjusted and optimized according to the new monitoring data to ensure that the fabric state always remains within the optimal range.

[0039] Performance Testing: 1. Infrared emissivity: Use the photothermal radiation method to place the fabric close to a flat plate with a temperature measuring device. There is an insulation device on the other side of the flat plate. Use two photothermal radiation sources with reflective covers to irradiate the fabric at a certain angle. At the same time, use an infrared thermal imager placed on the central vertical line of the flat plate. The photothermal radiation source continues to irradiate the fabric until the reading of the temperature measuring device is stable. The infrared emissivity of the fabric is calculated using a specific formula. 2. Electromagnetic shielding transmittance and shielding effectiveness: Set the transmittance tester parameters according to the test requirements to measure the transmittance of the fabric, and use the coaxial transmission line method to calculate the shielding effectiveness by measuring the ratio of the electromagnetic field intensity before and after shielding.

[0040] The test data of each embodiment under the same test conditions are shown in Table 1

[0041] Table 1 It can be seen from the experimental data in Table 1 that the infrared-proof composite layer prepared by mixing graphene slurry prepared by diethylene glycol butyl ether, graphene and aqueous acrylic emulsion with MXene and titanium oxide powder doped with 1.3% cobalt ions and water to form a solution and adding adhesives and thickeners to form MXene slurry can effectively guide the energy of electromagnetic waves to achieve electromagnetic shielding, ensure that the infrared-proof coating has uniform and stable performance, further reduce the penetration ability of electromagnetic waves, and the sensing and regulating integrated module in a low temperature environment monitors the state of the fabric in real time and automatically adjusts the temperature and humidity environmental conditions of the fabric so that the fabric can adapt to different climates and combat environments and maintain stable performance, further reducing the infrared radiation of the fabric and improving its stealth effect.

[0042] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A military infrared-proof electromagnetic shielding intelligent stealth fabric, comprising an aramid fiber base layer (1), an electromagnetic shielding layer (2), an infrared-proof composite layer (3), a functional layer (4) and an induction adjustment integrated module, characterized in that: An electromagnetic shielding layer (2) is arranged on the outer side of the aramid fiber base layer (1), an infrared protection composite layer (3) is arranged on the outer side of the electromagnetic shielding layer (2), a functional layer (4) is arranged on the outer side of the infrared protection composite layer (3), and an induction adjustment integrated module is arranged on the outer side of the aramid fiber base layer (1).

2. The military anti-infrared electromagnetic shielding intelligent stealth fabric according to claim 1, characterized in that: The electromagnetic shielding layer (2), the infrared protection composite layer (3) and the functional layer (4) are respectively bonded together by acrylic resin.

3. The military anti-infrared electromagnetic shielding intelligent stealth fabric according to claim 1, characterized in that: The infrared protection composite layer (3) comprises a graphene base layer (6) and a MXene stabilizing layer (7), wherein the MXene stabilizing layer (7) is arranged on the outside of the graphene base layer (6).

4. The military anti-infrared electromagnetic shielding intelligent stealth fabric according to claim 1, characterized in that: The functional layer (4) comprises a flame retardant layer (8), a hydrophobic layer (9) and a wear-resistant layer (10); the hydrophobic layer (9) is arranged on the outside of the flame retardant layer (8), and the wear-resistant layer (10) is arranged on the outside of the hydrophobic layer (9).

5. The military anti-infrared electromagnetic shielding intelligent stealth fabric according to claim 1, characterized in that: The sensing and regulating integrated module comprises an integrated slot (11), an embedded processor (12), a temperature and humidity sensing sensor (13), a temperature regulating execution unit (14) and a humidity regulating execution unit (15); the integrated slot (11) is arranged on the outside of the aramid fiber base layer (1); the embedded processor (12) is installed on the inside of the integrated slot (11); the temperature regulating execution unit (14) and the humidity regulating execution unit (15) are respectively installed on the inside of the integrated slot (11); and a power storage module is also installed on the inside of the integrated slot (11).

6. The military anti-infrared electromagnetic shielding intelligent stealth fabric according to claim 5, characterized in that: The temperature control execution unit (14) is a heater, the humidity control execution unit (15) comprises a humidifier and a dehumidifier, the temperature and humidity sensing sensor (13) is installed on the outside of the aramid fiber base layer (1), and the temperature and humidity sensing sensor (13) is electrically connected to the embedded processor (12).

7. A method for preparing a military anti-infrared electromagnetic shielding intelligent stealth fabric, applicable to a military anti-infrared electromagnetic shielding intelligent stealth fabric as claimed in any one of claims 1 to 6, characterized in that: The method comprises the following steps:

1. pretreatment of the base layer; 2. filling of the integrated module; 3. preparation and coating of the infrared-proof composite layer; 4. composite of the multi-layer structure; 5. post-processing, drying and shaping.

8. The method for preparing a military anti-infrared electromagnetic shielding intelligent stealth fabric according to claim 7, characterized in that: The base pretreatment steps are as follows: the aramid fiber base (1) is cleaned, degreased, and desized to ensure the adhesion and uniformity of the subsequent coating.

9. The method for preparing a military anti-infrared electromagnetic shielding intelligent stealth fabric according to claim 8, characterized in that: The steps of filling the integrated module are as follows: using a groove pressing machine to press out a plurality of integrated grooves (11) on the aramid fiber base layer (1), placing the embedded processor (12), the temperature control execution unit (14) and the humidity control execution unit (15) in the integrated grooves (11) respectively and fixing them with adhesive, and using adhesive to install the temperature and humidity sensing sensor (13) on the outside of the aramid fiber base layer (1).

10. The method for preparing a military anti-infrared electromagnetic shielding intelligent stealth fabric according to claim 9, characterized in that: The preparation and coating steps of the infrared protection composite layer are as follows: Step (1) Preparation of graphene slurry: by weight, 100 parts of diethylene glycol butyl ether, 50-75 parts of graphene and 10-15 parts of aqueous acrylic emulsion are put into a mixer and uniformly mixed, and the mixture is stirred at 45° C. for 10-15 minutes at a speed of 300 r / min to form graphene slurry; Step (2) Preparation of MXene slurry: MXene and titanium oxide powder with a cobalt ion doping amount of 1.3% are mixed. The powder and water are mixed to form a solution, and a binder and a thickener are added to form a stable slurry; step (3) slurry coating: the carbon fiber dispersion, graphene slurry and MXene slurry are coated on the aramid fiber base (1) in sequence using a flat screen printing machine, the drying temperature of the drying machine is controlled at 80 to 140° C., and the drying time is 10 to 30 minutes, so as to ensure that the coating is evenly and firmly attached to the aramid fiber, and an electromagnetic shielding layer (2) and an infrared protection composite layer (3) are formed on the outside of the aramid fiber base (1).

11. The method for preparing a military anti-infrared electromagnetic shielding intelligent stealth fabric according to claim 10, characterized in that: The multi-layer structure composite steps are as follows: using a flat screen printing machine to further coat the flame retardant coating and the fluorocarbon compound on the outer side of the infrared protection composite layer (3) in sequence to form a flame retardant layer (8) and a hydrophobic layer (9), and bonding the polyamide fiber layer to the outer surface of the hydrophobic layer (9) by means of an adhesive.

12. The method for preparing a military anti-infrared electromagnetic shielding intelligent stealth fabric according to claim 11, characterized in that: The post-treatment drying and shaping steps are as follows: use a hot press to compact the coated multi-layer composite structure to ensure that the layers are tightly bonded, the pressure is controlled at 10MPa to 60MPa, hot press for 2min to 3min at a constant temperature of 200°C, and perform curing treatment to fully cure the composite coating and the adhesive and enhance adhesion.

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