CN113619693B - Stealth bulletproof composite material, forming method thereof and vehicle cockpit - Google Patents

Stealth bulletproof composite material, forming method thereof and vehicle cockpit Download PDF

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Publication number
CN113619693B
CN113619693B CN202111072508.9A CN202111072508A CN113619693B CN 113619693 B CN113619693 B CN 113619693B CN 202111072508 A CN202111072508 A CN 202111072508A CN 113619693 B CN113619693 B CN 113619693B
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layer
bulletproof
electromagnetic shielding
main body
framework
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CN113619693A (en
Inventor
吕明云
蒋祎
武永梅
胡冰蕊
欧阳思玥
王传志
王泽平
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Hubei Kuanpu Aviation Technology Co ltd
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Beihang University
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D29/00—Superstructures, understructures, or sub-units thereof, characterised by the material thereof
    • B62D29/04—Superstructures, understructures, or sub-units thereof, characterised by the material thereof predominantly of synthetic material
    • B62D29/043—Superstructures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/02—Layer formed of wires, e.g. mesh
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/046—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of foam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B32B15/088—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyamides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/14—Layered products comprising a layer of metal next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
    • B32B3/08—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
    • B32B3/12—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by a layer of regularly- arranged cells, e.g. a honeycomb structure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/28—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer comprising a deformed thin sheet, i.e. the layer having its entire thickness deformed out of the plane, e.g. corrugated, crumpled
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H7/00—Armoured or armed vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0261—Polyamide fibres
    • B32B2262/0269—Aromatic polyamide fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/101—Glass fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/103—Metal fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
    • B32B2307/212—Electromagnetic interference shielding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/718—Weight, e.g. weight per square meter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2605/00—Vehicles
    • B32B2605/08—Cars

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)

Abstract

The application discloses stealth bulletproof composite material and a forming method thereof, and a vehicle cockpit.A cockpit main body and a vehicle door main body of the vehicle cockpit are both made of composite materials, each composite material comprises a framework, a bulletproof layer, a wave absorbing layer and a wave transmitting layer which are sequentially arranged on one side of the framework from inside to outside, and an inner skin arranged on the other side of the framework, and the composite material further comprises an electromagnetic shielding layer which is positioned between the framework and the bulletproof layer. The automobile body weight is reduced, the strength of the automobile body is improved, and meanwhile various performance requirements of stealth, bulletproof and the like of a special vehicle can be met.

Description

Stealth bulletproof composite material, forming method thereof and vehicle cockpit
Technical Field
The application belongs to the technical field of vehicle design, and particularly relates to a stealth bulletproof composite material for a special vehicle cab, a forming method of the stealth bulletproof composite material, and the vehicle cab made of the composite material.
Background
With the development of the modern automobile industry, in order to meet the requirements of people on high comfortable driving, automobiles are rapidly developed towards light weight, high performance and safety. For special vehicles, the load conditions under different task conditions are different, and the working environment and the driving road are complex and diverse, so that the special vehicles have higher technical requirements.
The cockpit is an important component of a special vehicle, the traditional cockpit of the special vehicle is mainly made of metal, but a metal steel plate has heavy weight and is easy to corrode, and deformation is easy to cause due to welding influence in the forming process. In addition, in order to meet various requirements of stealth bulletproof, electromagnetic shielding and the like of a cockpit, stealth coatings, bulletproof materials, shielding materials and the like need to be added on a metal vehicle body, so that the technical difficulty of the metal vehicle body is greatly increased.
In recent years, composite materials have been widely used in various fields. Compared with metal materials, the composite material has the characteristics of light weight, high strength, good impact resistance, shock absorption, noise reduction and the like, and meanwhile, the manufacturing process of the composite material can realize the integrated forming of structural materials and functional materials. Compared with the traditional metal vehicle body, the composite cockpit has the advantages of reducing the weight of the vehicle body, reducing the energy consumption and improving the structural strength of the vehicle body.
At present, automobile manufacturers at home and abroad can apply the composite material in the development of parts and finished automobiles. For example, glass fiber reinforced SMCs have been widely used in bumpers, pedals, brackets, body panels, roofs, and the like of trucks.
Disclosure of Invention
The application aims to provide the stealth bulletproof composite material, the forming method thereof and the vehicle cockpit adopting the stealth bulletproof composite material, so that the vehicle weight is reduced, the vehicle strength is improved, and various performance requirements of stealth bulletproof of special vehicles and the like can be met.
According to the 1 st aspect of this application, disclose a shellproof stealthy combined material, this combined material includes the skeleton, by interior to exterior sets gradually shellproof layer, absorbing layer and the wave-transparent layer in skeleton one side to and set up the interior covering at the skeleton opposite side, combined material still includes the electromagnetic shield layer, this electromagnetic shield layer be located the skeleton with between the shellproof layer.
In some examples, the inner skin, the skeleton, the filling layer and the electromagnetic shielding layer are arranged from inside to outside and are integrated by means of heat bonding.
According to the 2 nd aspect of the present application, a molding process for manufacturing the above bulletproof stealth composite material is disclosed, which comprises the steps of:
step 201, skeleton molding treatment;
vacuumizing the autoclave, and adopting a carbon fiber composite material to complete the integral curing molding of the framework for 1-2 hours at the temperature of 135-180 ℃ and the pressure of 0.5-1.0 MPa;
step 202, filling layer treatment and inner skin bonding;
cutting the filling material and the inner skin material which are selected according to needs into a preset shape, bonding and pressing for 0.5-1 h, and forming the filling material and the inner skin material into a whole with the framework;
step 203, bonding an electromagnetic shielding layer;
Cutting the electromagnetic shielding material into a preset shape, adhering the electromagnetic shielding material to the framework, and heating and curing at 135-145 ℃ for 0.5-1.5 h to obtain a first intermediate forming body;
step 204, forming the bulletproof layer;
vacuumizing the autoclave, and integrally curing and molding the bulletproof material and the first intermediate molded body for 1-2 h at the temperature of 180-200 ℃ and the pressure of 2.0-2.5 MPa to obtain a second intermediate molded body;
step 205, bonding a wave absorbing layer and a wave transmitting layer;
and selecting a wave-absorbing material and a wave-transmitting material according to the requirement, determining the thicknesses of the wave-absorbing material and the wave-transmitting material, and sequentially bonding the wave-absorbing material and the wave-transmitting material to the surface of the bulletproof layer of the second intermediate forming body at the temperature of between 50 and 90 ℃.
According to the 3 rd aspect of the application, a bulletproof stealth vehicle cab is disclosed, which comprises a cab main body and a vehicle door arranged on the cab main body, wherein the cab main body and the vehicle door main body are both made of the composite material;
a connecting part of the inner side surface of the cab main body and the end surface of the cab extends for a preset distance in the direction of the door to form an overlapping part, and the overlapping part covers a part of the inner side surface of the door main body in the state that the door is closed;
An inner corner part is formed between the overlapping part and the end surface of the cab, an outer corner part is formed between the inner side surface of the door body and the end surface of the door, and the inner corner part and the outer corner part are opposite to each other and are separated by a preset gap in a closed state of the door;
an inner angle electromagnetic shielding layer is arranged in the overlapping part along the extending direction of the overlapping part and is connected with an electromagnetic shielding layer in the cockpit main body; the vehicle door main body is provided with an outer corner electromagnetic shielding layer corresponding to the inner corner electromagnetic shielding layer, and the outer corner electromagnetic shielding layer is connected with the electromagnetic shielding layer in the vehicle door main body;
the interior corner portion is provided with a conductive rubber strip, and the interior corner electromagnetic shielding layer and the exterior corner electromagnetic shielding layer are in conductive connection through the conductive rubber strip in a state that the vehicle door is closed.
In some examples, the inner corner electromagnetic shield layer extends from a predetermined position of the cockpit end face and covers at least a portion of the surface of the inner corner portion, and the outer corner electromagnetic shield layer extends from a predetermined position of the door end face and covers at least a portion of the surface of the outer corner portion.
In some examples, the conductive rubber strip is in the form of a hollow tube structure.
According to the 4 th aspect of the application, another bulletproof stealth vehicle cab is disclosed, which comprises a cab main body and a vehicle door arranged on the cab main body, wherein the cab main body and the vehicle door main body are both made of the composite material;
The cockpit main body or the door main body is provided with a fixing frame for mounting glass, the fixing frame is provided with a step part along the thickness direction, a pressing plate mounted on the fixing frame is used for clamping the edge part of the glass on the step part, so that the inner side surface of the edge part of the glass is opposite to one side surface of the step part, and the outer side surface of the edge part is opposite to the inner side surface of the pressing plate;
a window electromagnetic shielding layer is arranged in the side face of the step part and is connected with an electromagnetic shielding layer in the cockpit main body or the vehicle door main body; a conductive copper foil is arranged in the edge part of the glass; the side surface of the step part is provided with a conductive rubber layer, and when the edge part of the glass is positioned in a clamping space formed by the pressing plate and the side surface of the step part, the shielding layer conductive net and the conductive copper foil are in conductive connection through the conductive rubber layer.
In some examples, the window electromagnetic shielding layer penetrates out of the side surface of the step part at a preset position, and a shielding layer conductive net is formed on at least one part of the surface of the side surface of the step part in a covering mode; the conductive copper foil penetrates out of the outer edge of the glass and covers at least part of the surface of the inner side face of the edge part of the glass.
In some examples, the bottom surface of the step part is provided with a rubber cushion block, and when the glass is installed in place or the window is lifted in place, the outer edge of the glass abuts against the rubber cushion block.
In some examples, a conductive rubber layer is also provided between the outer side surface of the glass edge portion and the pressure plate.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are examples of the present application and that other drawings may be derived by those of ordinary skill in the art without inventive exercise.
FIG. 1 is a schematic cross-sectional structural view of a composite material according to an embodiment of the present application;
FIG. 2 is a schematic flow chart of a composite material forming method according to an embodiment of the present application;
FIG. 3 is a schematic view of a vehicle cockpit window connection structure according to an embodiment of the present application;
FIG. 4 is a schematic view of a vehicle cockpit door connection structure according to an embodiment of the present application.
In the figure:
1-a bulletproof layer, 2-an electromagnetic shielding layer, 3-a filling layer, 4-an inner skin, 5-a framework, 6-a wave-transparent layer and 7-a wave-absorbing layer;
301-cockpit main body, 302-vehicle door, 303-overlapping part, 304-inner angle electromagnetic shielding layer, 305-outer angle electromagnetic shielding layer, 306-conductive rubber strip;
412-window frame, 413-pressing plate, 414-rubber cushion block, 415-glass, 416-conductive copper foil, 417-conductive rubber layer, 418-window electromagnetic shielding layer and 419-electromagnetic shielding layer;
Detailed Description
Exemplary embodiments of the present application are described below with reference to the accompanying drawings, in which various details of the embodiments of the present application are included to assist understanding, and which are to be considered as merely exemplary. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the present application. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.
Example 1:
according to the embodiment of the application, a composite material with a bulletproof stealth function is disclosed, and a product made of the composite material, such as a vehicle cab, has the bulletproof and stealth functions. The vehicle can be a common automobile with special requirements, and can also be a military or police combat vehicle, a armored vehicle and the like.
As shown in fig. 1, the composite material comprises a framework 5, a bulletproof layer 1, a wave-absorbing layer 7 and a wave-transmitting layer 6 which are sequentially arranged on one side of the framework, and an inner skin 4 arranged on the other side of the framework 5.
The framework 5 comprises a plurality of beams with rectangular sections and/or beams with circular sections, the beams are parallel, staggered or arranged into a grid shape, and filling materials 3 are arranged in gaps between adjacent beams.
Preferably, the framework 5 is integrally molded from a carbon fiber material, for example, by an integral molding process combining autoclave molding and vacuum-assisted molding. Specifically, the beam structure may be formed by a rectangular-section beam or a circular-section beam, or by a combination of a rectangular-section beam and a circular-section beam, as the case may be. Wherein, the wall thickness of the rectangular section beam is 5 mm-15 mm, and the wall thickness of the circular section beam is 5 mm-10 mm.
The filling layer is made of light materials, such as PMI foam, and is used for keeping the flatness and the strength of the whole cockpit.
The wave-transmitting layer is made of wave-transmitting materials including but not limited to quartz fibers, glass fibers and aramid fibers, so that more than 95% of electromagnetic waves can penetrate through the wave-transmitting layer and be absorbed by the wave-absorbing materials.
Further, the composite material further comprises an electromagnetic shielding layer, and the electromagnetic shielding layer is positioned between the framework 5 and the bulletproof layer.
The electromagnetic shielding layer is made of a self-conductive material, for example, a copper mesh cloth, and is bonded to one side of the framework 5.
Preferably, the inner skin 4, the framework 5, the filling layer 3 and the electromagnetic shielding layer 2 are arranged from inside to outside and are integrally prepared by heating and bonding.
The bulletproof layer 1 is made of Kevlar materials through integrated molding, for example, integrated molding through combination of autoclave molding and vacuum-assisted molding. The thickness of the bulletproof layer is adjusted according to bulletproof requirements.
The wave-transmitting layer 6 is made of at least one wave-transmitting material of quartz fiber, glass fiber and aramid fiber, and ensures that more than 95% of electromagnetic waves can penetrate through the wave-transmitting layer and be absorbed by the internal wave-absorbing layer material. The wave-absorbing layer is of a corrugated plate structure or a honeycomb structure formed by flocculent, foam-shaped, spherical or fibrous materials. The material thickness is not less than 20mm, preferably at least 30 mm.
The composite material disclosed by the application has good bulletproof performance, the thickness of the bulletproof layer can be adjusted according to bulletproof requirements, and designability is good. Meanwhile, the composite material adopts the foam material as the filling material to fill part of gaps, and has the effects of increasing structural rigidity and preserving heat.
Example 2:
according to embodiments of the present application, a molding process for manufacturing the ballistic resistant stealth composite of the above embodiments is disclosed, as shown in fig. 2, comprising the steps of:
step 201, skeleton molding treatment;
and (3) vacuumizing the autoclave, and adopting a carbon fiber composite material to finish the integrated curing molding of the framework for 1-2 h under the conditions that the temperature is 135-180 ℃ and the pressure is 0.5-1.0 MPa.
Step 202, filling layer treatment and inner skin bonding;
the filling material and the inner skin material which are selected according to needs are cut into a preset shape, and are bonded and pressed for 0.5-1 h to be integrated with the framework.
Step 203, bonding an electromagnetic shielding layer;
cutting an electromagnetic shielding material, such as copper mesh cloth, into a predetermined shape, bonding the electromagnetic shielding material to the framework, and heating and curing at 135-145 ℃ for 0.5-1.5 h to obtain a first intermediate forming body.
Step 204, forming a bulletproof layer;
and (3) vacuumizing the autoclave, and integrally curing and molding a bulletproof material, such as a Kevlar material, with the first intermediate molding body for 1-2 h at the temperature of 180-200 ℃ and the pressure of 2.0-2.5 MPa to obtain a second intermediate molding body.
Step 205, bonding a wave absorbing layer and a wave transmitting layer;
and selecting a wave-absorbing material and a wave-transmitting material according to the requirements, determining the thicknesses of the wave-absorbing material and the wave-transmitting material, and sequentially adhering the wave-absorbing material and the wave-transmitting material to the surface of the bulletproof layer of the second intermediate forming body at the temperature of between 50 and 90 ℃.
This application adopts flocculence, foaminess, globular or fibrous structure to design the layer of absorbing for corrugated plate structure or honeycomb, and thickness is not less than 20mm, all has good absorption effect to L, S, C, X, Ku, Ka wave band to guaranteed to adopt the product that this combined material made, for example vehicle cockpit has good stealthy performance. In addition, the thickness of the wave absorbing layer can be changed, so that the vehicle cab meets stealth requirements of different levels, and the designability is good.
In the process of adopting the process to carry out the composite material cockpit, the composite material integrated forming process is adopted under the conditions of meeting the overall mechanical property and ensuring the appearance of the vehicle body, so that the assembly process of parts is greatly simplified, and the precision requirement of vehicle assembly is reduced.
Example 3:
according to an embodiment of the present application, a vehicle cabin with a bulletproof stealth function is disclosed, and as shown in fig. 3, the vehicle cabin comprises a cabin main body 301 and a vehicle door 302 mounted on the cabin main body, for example, one side of the vehicle door 302 is mounted on the cabin main body 301 through a hinge. The cockpit main body 301 and the door 302 main body are both made of the composite material of embodiment 1 or the composite material formed by the method of embodiment 2.
The cockpit body 301 includes an outer side surface, an inner side surface, and a cockpit end surface connecting the inner side surface and the outer side surface. The door 302 body includes an outer side, an inner side, and a door end face connecting the inner side and the outer side. The cabin end face is opposed to the door end face with a predetermined gap therebetween in a state where the door 301 is closed.
A connecting portion between the inner surface of the cabin body 301 and the cabin end surface extends a predetermined distance in the door direction to form an overlapping portion 303, and the overlapping portion 303 covers a part of the inner surface of the body of the door 302 in a state where the door 301 is closed.
An inner corner portion is formed between the overlapping portion and the cabin end face, and an outer corner portion is formed between the door main body inner side face and the door end face, the inner corner portion and the outer corner portion being opposed to each other with a predetermined gap therebetween in a state where the door 301 is closed.
An inner angle electromagnetic shielding layer 304 is arranged in the overlapping part along the extending direction of the overlapping part, is connected with the electromagnetic shielding layer in the cab main body, penetrates out from the predetermined position of the end face of the cab and covers at least one part of the surface of the inner angle part. The door body is provided with an outer corner electromagnetic shield layer 305 corresponding to the inner corner electromagnetic shield layer, which is connected to the electromagnetic shield layer in the door body and penetrates from a predetermined position of the end face of the door to cover at least a part of the surface of the outer corner portion.
The inner corner portion is further provided with a conductive rubber strip 306, which is fixed to the inner corner portion, for example, by an adhesive or a snap-fit structure. When the vehicle door 301 is closed, the inner corner electromagnetic shielding layer and the outer corner electromagnetic shielding layer are conductively connected through the conductive rubber strip.
In this embodiment, the conductive rubber strip is of a hollow tube structure.
This application has improved the whole stealthy effect in vehicle cockpit through set up electromagnetic shield structure in cockpit door department.
Example 4:
on the basis of embodiment 3, this embodiment is intended to further improve the stealth performance of the vehicle cabin. Since a windshield or a window is usually required to be disposed on a vehicle cabin and a vehicle door, a connection part structure between the glass and the cabin or the vehicle door has a great influence on the stealth performance of the vehicle.
As shown in fig. 4, the cabin body or the door body is provided with a fixing frame 412 for attaching a glass 415 (a windshield glass or a window glass), and the fixing frame 412 is provided with a stepped portion in a thickness direction. The edge portion of the glass 415 is held on the stepped portion by a pressing plate 413 attached to the fixing frame 412, i.e., the inner surface of the edge portion of the glass 415 is opposed to one surface of the stepped portion, and the outer surface of the edge portion is opposed to the inner surface of the pressing plate. Alternatively, the pressure plate 413 is adhered to or mounted on the fixing frame 412 by a connector, such as a screw.
A window electromagnetic shielding layer 418 is arranged in the side face of the step portion, and the window electromagnetic shielding layer is connected with an electromagnetic shielding layer 419 in the cockpit main body or the vehicle door main body. The window electromagnetic shielding layer penetrates out of the preset position of the side face of the step part, and at least one part of the surface of the side face of the step part is covered with a shielding layer conductive net.
The edge part of the glass 415 is internally provided with a conductive copper foil 416, and the conductive copper foil 416 penetrates out of the outer edge of the glass and covers at least part of the surface of the inner side surface of the edge part of the glass.
The side surface of the step part is provided with a conductive rubber layer 417, and when the glass edge part is in a clamping space formed by the pressing plate and the side surface of the step part (corresponding to fixedly mounted glass, such as a front windshield, the state is a glass fixed mounting state, and for glass capable of being opened and closed, such as a window glass, the state is a window closing state), the shielding layer conductive net and the conductive copper foil are in conductive connection through the conductive rubber layer 17.
Furthermore, a rubber pad 414 is arranged on the bottom surface of the step part, and when the glass 415 is installed in place or used for lifting the window, the outer edge of the glass abuts against the rubber pad 414.
Furthermore, a conductive rubber layer is also arranged between the outer side surface of the glass edge part and the pressing plate.
This application sets up electromagnetic shield structure through the glass installation department at cockpit and door window, has further improved the whole stealthy effect in vehicle cockpit.
The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same. Although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the technical solutions described in the foregoing embodiments may be modified or equivalent replaced by some or all of the technical features, and the modifications or the substitutions may not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the foregoing embodiments.

Claims (8)

1. A forming method for manufacturing a bulletproof stealth composite material, the composite material comprises a framework, a bulletproof layer, a wave absorbing layer and a wave transmitting layer which are sequentially arranged on one side of the framework from inside to outside, and an inner skin arranged on the other side of the framework, the composite material further comprises an electromagnetic shielding layer, and the electromagnetic shielding layer is positioned between the framework and the bulletproof layer, and the forming method is characterized by comprising the following steps:
Step 201, skeleton molding treatment;
vacuumizing the autoclave, and adopting a carbon fiber composite material to complete the integral curing molding of the framework for 1-2 hours at the temperature of 135-180 ℃ and the pressure of 0.5-1.0 MPa;
step 202, filling layer treatment and inner skin bonding;
cutting the filling material and the inner skin material which are selected according to needs into a preset shape, bonding and pressing for 0.5-1 h, and forming the filling material and the inner skin material into a whole with the framework;
step 203, bonding an electromagnetic shielding layer;
cutting the electromagnetic shielding material into a preset shape, adhering the electromagnetic shielding material to the framework, and heating and curing the electromagnetic shielding material at 135-145 ℃ for 0.5-1.5 h to obtain a first intermediate forming body;
step 204, forming a bulletproof layer;
vacuumizing the autoclave, and integrally curing and molding the bulletproof material and the first intermediate molding body for 1-2 hours at the temperature of 180-200 ℃ and the pressure of 2.0-2.5 MPa to obtain a second intermediate molding body;
step 205, bonding a wave absorbing layer and a wave transmitting layer;
and selecting a wave-absorbing material and a wave-transmitting material according to the requirements, determining the thicknesses of the wave-absorbing material and the wave-transmitting material, and sequentially adhering the wave-absorbing material and the wave-transmitting material to the surface of the bulletproof layer of the second intermediate forming body at the temperature of between 50 and 90 ℃.
2. A bulletproof stealth vehicle cockpit comprises a cockpit main body and a vehicle door arranged on the cockpit main body, and is characterized in that the cockpit main body and the vehicle door main body are both made of bulletproof stealth composite materials, each composite material comprises a framework, a bulletproof layer, a wave absorbing layer and a wave transmitting layer which are sequentially arranged on one side of the framework from inside to outside, and an inner skin arranged on the other side of the framework, and the composite material further comprises an electromagnetic shielding layer which is arranged between the framework and the bulletproof layer;
a connecting part of the inner side surface of the cab main body and the end surface of the cab extends for a preset distance in the direction of the door to form an overlapping part, and the overlapping part covers a part of the inner side surface of the door main body in the state that the door is closed;
an inner corner part is formed between the overlapping part and the end surface of the cab, an outer corner part is formed between the inner side surface of the door body and the end surface of the door, and the inner corner part and the outer corner part are opposite to each other and are separated by a preset gap in a closed state of the door;
an inner angle electromagnetic shielding layer is arranged in the overlapping part along the extending direction of the overlapping part and is connected with an electromagnetic shielding layer in the cockpit main body; the vehicle door main body is provided with an outer corner electromagnetic shielding layer corresponding to the inner corner electromagnetic shielding layer, and the outer corner electromagnetic shielding layer is connected with the electromagnetic shielding layer in the vehicle door main body;
The interior corner portion is provided with a conductive rubber strip, and the interior corner electromagnetic shielding layer and the exterior corner electromagnetic shielding layer are in conductive connection through the conductive rubber strip in a state that the vehicle door is closed.
3. The bulletproof stealth vehicle cockpit of claim 2 wherein said inner corner electromagnetic shield layer extends from a predetermined cockpit end position over at least a portion of a surface of said inner corner portion and said outer corner electromagnetic shield layer extends from a predetermined door end position over at least a portion of a surface of said outer corner portion.
4. The bulletproof stealth vehicle cockpit of claim 2 wherein said conductive rubber strip is of a hollow tube construction.
5. A bulletproof stealth vehicle cockpit comprises a cockpit main body and a vehicle door arranged on the cockpit main body, and is characterized in that the cockpit main body and the vehicle door main body are both made of bulletproof stealth composite materials, each composite material comprises a framework, a bulletproof layer, a wave absorbing layer and a wave transmitting layer which are sequentially arranged on one side of the framework from inside to outside, and an inner skin arranged on the other side of the framework, and the composite material further comprises an electromagnetic shielding layer which is arranged between the framework and the bulletproof layer;
The cockpit main body or the door main body is provided with a fixing frame for mounting glass, the fixing frame is provided with a step part along the thickness direction, a pressing plate mounted on the fixing frame is used for clamping the edge part of the glass on the step part, so that the inner side surface of the edge part of the glass is opposite to one side surface of the step part, and the outer side surface of the edge part is opposite to the inner side surface of the pressing plate;
a window electromagnetic shielding layer is arranged in the side face of the step part and is connected with an electromagnetic shielding layer in the cockpit main body or the vehicle door main body; the window electromagnetic shielding layer penetrates out of the preset position of the side face of the step part, and at least one part of the surface of the side face of the step part is covered with a shielding layer conductive net; a conductive copper foil is arranged in the edge part of the glass; the side surface of the step part is provided with a conductive rubber layer, and when the edge part of the glass is positioned in a clamping space formed by the pressing plate and the side surface of the step part, the shielding layer conductive net and the conductive copper foil are in conductive connection through the conductive rubber layer.
6. Bulletproof stealth vehicle cockpit according to claim 5 characterized in that said electrically conductive copper foil extends through the outer edge of the glass and covers at least a part of the surface of the inner side of the edge portion of the glass.
7. The bulletproof stealth vehicle cab according to claim 5, wherein a rubber pad is provided on a bottom surface of the step portion, and when the glass is mounted in place or the window is raised in place, the outer edge of the glass abuts against the rubber pad.
8. Bulletproof stealth vehicle cockpit according to claim 5, characterized in that an electrically conductive rubber layer is also provided between the outer side of the glass edge section and said pressure plate.
CN202111072508.9A 2021-09-14 2021-09-14 Stealth bulletproof composite material, forming method thereof and vehicle cockpit Active CN113619693B (en)

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US20120090452A1 (en) * 2010-10-15 2012-04-19 Ashok Em Sudhakar Ballistic panel with configurable shielding
CN103644773A (en) * 2013-11-25 2014-03-19 衡阳泰豪通信车辆有限公司 Shelter wallboard with radar stealth function and capable of preventing fragment penetration
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