CN113203323A - Composite bulletproof plate and coating method - Google Patents
Composite bulletproof plate and coating method Download PDFInfo
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- CN113203323A CN113203323A CN202110464391.2A CN202110464391A CN113203323A CN 113203323 A CN113203323 A CN 113203323A CN 202110464391 A CN202110464391 A CN 202110464391A CN 113203323 A CN113203323 A CN 113203323A
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- 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
- F41H5/00—Armour; Armour plates
- F41H5/02—Plate construction
- F41H5/04—Plate construction composed of more than one layer
- F41H5/0414—Layered armour containing ceramic material
- F41H5/0428—Ceramic layers in combination with additional layers made of fibres, fabrics or plastics
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
- B29C66/45—Joining of substantially the whole surface of the articles
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- 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 form; Layered products 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 form; Layered products having particular features of form characterised by features of form at particular places, e.g. in edge regions
- B32B3/04—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by at least one layer folded at the edge, e.g. over another layer ; characterised by at least one layer enveloping or enclosing a material
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- 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
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- 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
- B32B5/22—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/24—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
- B32B5/26—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
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- 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
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
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- 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
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
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- 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
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
- B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B9/047—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material made of fibres or filaments
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- 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
- B32B2262/0253—Polyolefin fibres
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- 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
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- 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
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/558—Impact strength, toughness
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- 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
- B32B2571/00—Protective equipment
- B32B2571/02—Protective equipment defensive, e.g. armour plates, anti-ballistic clothing
Abstract
The invention provides a composite bulletproof plate and a cladding method, the composite bulletproof plate comprises a first cladding layer and a ceramic plate cladded in the first cladding layer, the inner surface and the outer surface of the first cladding layer are coated with hot melt adhesive films, a composite material backboard is arranged above the ceramic plate, a transition layer is arranged between the composite material backboard and the ceramic plate, and the transition layer and the first cladding layer are integrally formed into a tubular crack arrest fabric. The tubular crack arrest fabric with the hot melt adhesive film coated on the inner surface and the outer surface of the bulletproof plate is coated with the ceramic plate, the forming process is simple, the hot melt adhesive film and the tubular crack arrest fabric can be coated at one time, and the efficiency is high.
Description
Technical Field
The invention belongs to the technical field of protective armor, and particularly relates to a composite bulletproof plate and a coating method.
Background
The ceramic composite bulletproof plate is generally made of materials such as ceramic, Polyethylene (PE) and the like, and has the bulletproof principle that: when the bullet impacts the bulletproof plate, the bullet impacts the ceramic layer firstly, the ceramic is cracked after the bullet with huge kinetic energy contacts the ceramic layer, and meanwhile, the huge impact energy generated by an impact point is transmitted to the periphery to absorb the kinetic energy of the bullet. When the bullet passes through the ceramic layer, most kinetic energy is lost, and when the bullet reaches the polyethylene layer, the polyethylene consumes the kinetic energy of the bullet through stretching and wraps the bullet head and the elastic sheet, so that the bullet cannot damage a human body, and a protection effect is achieved.
At present, through technical development and innovation, a ceramic composite bulletproof plate is generally prepared by bonding and compounding a crack-stopping layer, a ceramic layer and a back plate composite material layer, wherein the crack-stopping layer is mainly used for coating the outer surface of the ceramic layer, and avoids secondary damage caused by fragment splashing generated by the ceramic plate when suffering impact resistance; and the uneven force applied to the crack-stopping fabric during laying can cause uneven thickness of coating glue or dislocation of glue films, and cause uneven surface of the bulletproof plate product, thereby affecting the product quality. In addition, the two-dimensional crack arrest fabric adopted in the prior art can only protect the outer surface of the ceramic from causing secondary damage due to fragments generated by impact, the fragments on the side surface of the ceramic cannot be protected, meanwhile, the performance between the interlayer between the ceramic plate and the composite material back plate which are only bonded through the adhesive film is poor, and the bulletproof performance of the bulletproof plate can be reduced or the back of the back plate is large due to layering when the bulletproof plate is impacted by a bullet. The patent application with publication number 110953933a discloses a three-dimensional constraint ceramic composite bulletproof panel, wherein a tubular fabric on the surface of the bulletproof panel is orthogonally nested to form a boxed coating layer, so that three-dimensional constraint is realized, and a ceramic layer in the ceramic composite panel is bonded with a fiber reinforced composite material plate through an adhesive film or an adhesive, so that one-time coating of the tubular fabric and the adhesive film cannot be realized. In addition, because of the high toughness and low melting point of the PE composite material, in order to realize effective protection of the armor piercing bomb and give full play to the protection capability of the ceramic and the composite material, a high-strength, high-modulus and high-temperature-resistant transition layer composite material is usually introduced between the ceramic panel and the composite material back plate; the patent application with the publication number 112484575A discloses a bulletproof flashboard with a fiber slow-release layer, wherein a carbon fiber board is introduced between a ceramic bullet facing layer and the fiber slow-release layer, so that the defensive performance of the bulletproof flashboard to heavy machine gun armor-piercing combustion bullet shooting is effectively improved, but the forming process is complex and the efficiency is low.
Disclosure of Invention
In view of the above, the present invention provides a composite bulletproof plate and a cladding method thereof, which aim to overcome the defects in the prior art.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
the utility model provides a composite bulletproof plate, includes first cladding and the cladding at the intraformational ceramic plate of first cladding, the interior outer surface of first cladding has all coated hot melt adhesive membrane, the top of ceramic plate is provided with the composite material backplate, be provided with the transition layer between composite material backplate and the ceramic plate, the transition layer ends the fabric with the tubulose of first cladding as integrated into one piece.
Preferably, the surface of the composite material back plate is coated with a second coating layer, and the second coating layer is a tubular crack arrest fabric and is integrally formed with the transition layer and the first coating layer.
Preferably, the tubular crack arrest fabric is one of a two-dimensional woven structure, a three-dimensional woven structure or a knitted structure.
Preferably, the tubular crack arrest fabric is made of reinforcing fibers, and the reinforcing fibers are any one or more of aramid fibers, carbon fibers, glass fibers, polyamide fibers and quartz fibers.
Preferably, the hot melt adhesive film is a plastic adhesive film or a non-woven net film, and the resin system of the hot melt adhesive film is EVA, TPU, PA or PES.
The invention also provides a coating method of the composite bulletproof plate, which comprises the following steps:
s1: cutting the crack-stopping fabric: cutting tubular crack arrest fabrics with hot melt adhesive films coated on the inner and outer surfaces according to the size of the bulletproof plate product;
s2: the ceramic plate crack arrest fabric is coated: pre-flanging the inside of the caliber of one end of the tubular crack arrest fabric, placing a ceramic plate in the pre-flanged tubular crack arrest fabric, pulling out the ceramic plate and the pre-flanging to the end, which is not flanged, of the ceramic plate, so that the ceramic plate is completely coated on the outer surface of the tubular crack arrest fabric, and reserving sections at two ends of the tubular crack arrest fabric coated with the ceramic plate to form reserved ends;
s3: and (3) coating the crack-arresting fabric of the composite material back plate: coating the reserved end of the tubular crack arrest fabric on the lower surface or four circumferential surfaces or all the outer surfaces of the composite material back plate and placing the tubular crack arrest fabric coated ceramic plate above to form a composite bulletproof plate prefabricated product;
s4: and (3) composite molding of the bulletproof plate: and (3) sealing and vacuumizing the composite bulletproof plate prefabricated product in a vacuum container, and then carrying out hot-pressing composite curing molding to finally obtain a composite bulletproof plate finished product.
Preferably, the reserved ends of the tubular crack arrest fabric in step S3 are wrapped on four circumferential surfaces of the composite backboard and placed above the ceramic board wrapped with the tubular crack arrest fabric to form a composite ballistic panel preform, which includes the following specific steps: the composite backboard is firstly placed above the ceramic plate coated with the tubular crack arrest fabric, one end of the tubular crack arrest fabric is firstly wound to the upper surface of the composite backboard and is fixed by a high-temperature adhesive tape, and then the other end of the tubular crack arrest fabric is wound to the upper surface of the composite backboard and is fixed by the high-temperature adhesive tape to form the composite bulletproof board prefabricated product.
Preferably, the reserved end of the tubular crack arrest fabric in step S3 is wrapped on the whole composite backboard and placed above the ceramic board wrapped with the tubular crack arrest fabric to form a composite bulletproof board preform, which includes the following specific steps: and respectively nesting the two reserved ends of the tubular crack arrest fabric on the surface of the composite backboard, and then placing the composite crack arrest fabric on the ceramic board coated with the tubular crack arrest fabric to form a composite bulletproof board prefabricated product.
Preferably, the reserved end of the tubular crack arrest fabric in step S3 is wrapped on the lower surface of the composite back plate and is placed above the ceramic plate wrapped with the tubular crack arrest fabric to form a composite ballistic panel preform, which includes the following specific steps: and S2, folding and covering both ends of the tubular crack arrest fabric above the ceramic plate, and then placing the composite material back plate above the tubular crack arrest fabric to form the composite bulletproof plate prefabricated product.
Compared with the prior art, the invention has the following advantages:
the invention creates the tubular crack arrest fabric with the hot melt adhesive film coated on the inner and outer surfaces of the composite bulletproof plate for ceramic plate coating, the molding process is simple, the hot melt adhesive film and the tubular crack arrest fabric can be coated at one time, the efficiency is high, the ceramic plate is coated by turning over the composite bulletproof plate, the hot melt film is not deviated and folded, the surface of the prepared product is smooth, and the quality is good; in addition, the adoption of the tubular fabric can not only ensure that the ceramic plate is fully coated, but also synchronously realize the three-dimensional constraint between the composite material backboard and the ceramic plate and the integrated forming of the transition layer between the ceramic plate layer and the composite material backboard layer, and the transition layer does not need to be independently added between the ceramic plate layer and the composite material backboard, so that the process steps are reduced, and the production efficiency is improved; meanwhile, the material of the transition layer can be the same as that of the tubular fabric through integral forming, the shock resistance of the crack-stopping fabric is fully exerted, and splashing after the ceramic plate layer is broken can be effectively prevented.
Drawings
Fig. 1 is a schematic view of a ceramic plate crack arrest fabric coating process according to an embodiment of the present invention;
fig. 2 is a schematic cross-sectional view of the composite ballistic panel of inventive example 1;
fig. 3 is a schematic cross-sectional view of the composite ballistic panel of inventive example 2;
fig. 4 is a schematic cross-sectional view of the composite ballistic panel of inventive example 3;
description of reference numerals:
1. a tubular crack arrest fabric; 2. a ceramic plate; 3. a composite backing sheet.
Detailed Description
Unless defined otherwise, technical terms used in the following examples have the same meanings as commonly understood by one of ordinary skill in the art to which the present invention belongs. The test reagents used in the following examples, unless otherwise specified, are all conventional biochemical reagents; the experimental methods are conventional methods unless otherwise specified.
In the following three examples, the fibers of the tubular crack arrest fabric are all aramid fibers, and the areal density of the crack arrest fabric is 340g/m2；
In the following three embodiments, the inner surface and the outer surface of the tubular crack arrest fabric are both covered with EVA hot melt adhesive films;
in the following three examples and comparative examples, the composite back plates are all ultra-high molecular weight polyethylene fiber reinforced composite plates with the same thickness, and the size is 400mm multiplied by 400 mm;
in the following three examples and comparative examples, the ceramic plates were each a boron carbide ceramic plate of the same thickness, having a size of 400mm × 400 mm;
in the following three examples and comparative examples, the autoclave process was used for the hot press compounding;
the invention will be described in detail with reference to the following examples.
Example 1
A composite bulletproof plate comprises a tubular crack arrest fabric and a ceramic plate coated in the tubular crack arrest fabric, wherein the coated ceramic plate is positioned in the middle of the tubular crack arrest fabric, and both ends of the tubular crack arrest fabric are provided with reserved ends for coating a composite material backboard; the inner surface and the outer surface of the tubular crack arrest fabric are coated with hot melt adhesive films, and a composite material back plate is arranged above the ceramic plate.
The composite material back plate is arranged above the ceramic plate and corresponds to the ceramic plate in position, and the reserved ends of the two ends of the tubular crack arrest fabric are fixed on the upper surface of the composite material back plate through high-temperature adhesive tapes. The full coating of the ceramic plate and the coating of the four circumferential surfaces of the composite backboard are formed by the tubular crack arrest fabric, and meanwhile, a layer of crack arrest fabric between the ceramic plate and the composite backboard forms a transition layer.
The coating method of the composite bulletproof plate comprises the following steps:
s1: cutting the crack-stopping fabric: cutting tubular crack arrest fabrics with hot melt adhesive films coated on the inner and outer surfaces according to the size of the bulletproof plate product;
s2: the ceramic plate crack arrest fabric is coated: as shown in fig. 1, pre-flanging the inside of the caliber of one end of the tubular crack arrest fabric, placing a ceramic plate in the pre-flanged tubular crack arrest fabric, pulling out the ceramic plate and the pre-flanged edge to the non-flanged end of the ceramic plate, so that the ceramic plate is completely coated on the outer surface of the tubular crack arrest fabric, and reserving a section at each of two ends of the tubular crack arrest fabric coated with the ceramic plate to form a reserved end;
s3: and (3) coating the crack-arresting fabric of the composite material back plate: firstly, placing a composite backboard above a ceramic plate coated with a tubular crack arrest fabric, winding one end of the tubular crack arrest fabric to the upper surface of the composite backboard and fixing the end by a high-temperature adhesive tape, and then winding the other end of the tubular crack arrest fabric to the upper surface of the composite backboard and fixing the other end by the high-temperature adhesive tape to form a composite bulletproof plate prefabricated product;
s4: and (3) composite molding of the bulletproof plate: and (3) sealing and vacuumizing the composite bulletproof plate prefabricated product in a vacuum container, and then carrying out hot-pressing composite curing molding to finally obtain a composite bulletproof plate finished product.
The final weight of the composite bulletproof plate prepared by the embodiment is 5902g, 3-shot 53-shot 7.62mm armor-piercing combustion bullets can be effectively protected through a target test, and the average back convex value is below 27 mm.
Example 2
A composite bulletproof plate comprises a tubular crack arrest fabric and a ceramic plate coated in the tubular crack arrest fabric, wherein the coated ceramic plate is positioned in the middle of the tubular crack arrest fabric, and both ends of the tubular crack arrest fabric are provided with reserved ends for coating a composite material backboard; the inner surface and the outer surface of the tubular crack arrest fabric are coated with hot melt adhesive films, and a composite material back plate is arranged above the ceramic plate.
The composite material back plate is arranged above the ceramic plate and corresponds to the ceramic plate in position, and the reserved ends at the two ends of the tubular crack arrest fabric are sequentially nested on the surface of the composite material back plate. The full-face coating of the ceramic plate and the full-face coating of the composite material back plate are formed through the tubular crack-stopping fabric, and meanwhile, the three layers of crack-stopping fabric between the ceramic plate and the composite material back plate form a transition layer.
The coating method of the composite bulletproof plate comprises the following steps:
s1: cutting the crack-stopping fabric: cutting tubular crack arrest fabrics with hot melt adhesive films coated on the inner and outer surfaces according to the size of the bulletproof plate product;
s2: the ceramic plate crack arrest fabric is coated: as shown in fig. 1, pre-flanging the inside of the caliber of one end of the tubular crack arrest fabric, placing a ceramic plate in the pre-flanged tubular crack arrest fabric, pulling out the ceramic plate and the pre-flanged edge to the non-flanged end of the ceramic plate, so that the ceramic plate is completely coated on the outer surface of the tubular crack arrest fabric, and reserving a section at each of two ends of the tubular crack arrest fabric coated with the ceramic plate to form a reserved end;
s3: and (3) coating the crack-arresting fabric of the composite material back plate: respectively nesting two reserved ends of the tubular crack arrest fabric on the surface of a composite material backboard and then placing the composite material backboard above a ceramic plate coated with the tubular crack arrest fabric to form a composite bulletproof plate prefabricated product;
s4: and (3) composite molding of the bulletproof plate: and (3) sealing and vacuumizing the composite bulletproof plate prefabricated product in a vacuum container, and then carrying out hot-pressing composite curing molding to finally obtain a composite bulletproof plate finished product.
The final weight of the composite bulletproof plate prepared by the embodiment is 5900g, 3-shot 53-shot 7.62mm armor-piercing combustion bullets can be effectively protected through a target test, and the average back convex value is below 25 mm.
Example 3
A composite bulletproof plate comprises a tubular crack arrest fabric and a ceramic plate coated in the tubular crack arrest fabric, wherein the coated ceramic plate is positioned in the middle of the tubular crack arrest fabric, and both ends of the tubular crack arrest fabric are provided with reserved ends for coating a composite material backboard; the inner surface and the outer surface of the tubular crack arrest fabric are coated with hot melt adhesive films, and a composite material back plate is arranged above the ceramic plate.
The composite material back plate is placed above the ceramic plate and corresponds to the ceramic plate in position, the reserved ends at the two ends of the tubular crack arrest fabric are folded and coated above the ceramic plate, and then the composite material back plate is placed above the tubular crack arrest fabric. The tubular crack arrest fabric is used for forming a complete coating for the ceramic plate, and meanwhile, the five layers of crack arrest fabric between the ceramic plate and the composite backboard form a transition layer.
The coating method of the composite bulletproof plate comprises the following steps:
s1: cutting the crack-stopping fabric: cutting tubular crack arrest fabrics with hot melt adhesive films coated on the inner and outer surfaces according to the size of the bulletproof plate product;
s2: the ceramic plate crack arrest fabric is coated: as shown in fig. 1, pre-flanging the inside of the caliber of one end of the tubular crack arrest fabric, placing a ceramic plate in the pre-flanged tubular crack arrest fabric, pulling out the ceramic plate and the pre-flanged edge to the non-flanged end of the ceramic plate, so that the ceramic plate is completely coated on the outer surface of the tubular crack arrest fabric, and reserving a section at each of two ends of the tubular crack arrest fabric coated with the ceramic plate to form a reserved end;
s3: and (3) coating the crack-arresting fabric of the composite material back plate: folding and covering both ends of the tubular crack arrest fabric above the ceramic plate, and then placing the composite material back plate above the tubular crack arrest fabric to form a composite bulletproof plate prefabricated product;
s4: and (3) composite molding of the bulletproof plate: and (3) sealing and vacuumizing the composite bulletproof plate prefabricated product in a vacuum container, and then carrying out hot-pressing composite curing molding to finally obtain a composite bulletproof plate finished product.
The final weight of the composite bulletproof plate prepared by the embodiment is 5903g, 3-shot 53-shot 7.62mm armor-piercing combustion bullets can be effectively protected through a target test, and the average back convex value is below 29 mm.
Comparative example
The method comprises the following steps of (1) paving an aramid crack arrest fabric which is of a common two-dimensional woven structure and is not compounded with a hot melt adhesive film according to an ultrahigh molecular weight polyethylene fiber reinforced composite material back plate layer, an EVA hot melt adhesive film layer, an aramid crack arrest fabric layer, an EVA hot melt adhesive film layer, a boron carbide ceramic plate layer, an EVA hot melt adhesive film layer and an aramid crack arrest fabric layer structure, sealing and vacuumizing a vacuum bag, and then compounding and curing in an autoclave to prepare the multilayer structure compounded bulletproof plate; the surface density of the aramid fiber crack-arresting fabric is 175g/m2And the aramid fiber crack arrest fabric coated outside the boron carbide ceramic is 1 layer, the aramid fiber crack arrest fabric sandwiched between the ultrahigh molecular weight polyethylene fiber reinforced composite material back plate and the boron carbide ceramic plate is 5 layers, and the weight of the final composite bulletproof plate is 5905 g.
The composite armor prepared by the comparative example can effectively protect 3-shot 53-type 7.62mm armor-piercing combustion bombs through a targeting test, but the average back convex value is 31 mm; and although the 3 rd bomb is not penetrated, the target plate is finally integrally layered, and the whole target plate completely loses the protection capability.
It can be seen from the average back convex values of the examples 1 to 3 and the comparative example that the tubular crack arrest fabric is used for respectively coating the ceramic plate and the composite material back plate in three dimensions, so that the multi-bullet hitting resistance of the armor plate can be effectively improved, the integrity of the armor plate is improved, and the armor plate has a smaller average back convex value after multi-bullet hitting resistance.
In conclusion, the composite bulletproof plate disclosed by the invention is simple in preparation process, high in production efficiency and low in cost, and has the advantages of multiple bullet striking resistance, small average back convex value, strong integrity and better bulletproof effect compared with a composite bulletproof plate prepared by adopting a common two-dimensional crack-arresting fabric.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the invention, so that any modifications, equivalents, improvements and the like, which are within the spirit and principle of the present invention, should be included in the scope of the present invention.
Claims (9)
1. The utility model provides a compound bulletproof plate which characterized in that: including first cladding and the cladding at the intraformational ceramic plate of first cladding, the interior outer surface of first cladding has all coated hot melt adhesive membrane, the top of ceramic plate is provided with the composite material backplate, be provided with the transition layer between composite material backplate and the ceramic plate, the transition layer stops the crack fabric with first cladding is integrated into one piece's tubulose.
2. The composite ballistic panel of claim 1, wherein: the surface of the composite material back plate is coated with a second coating layer, and the second coating layer is a tubular crack arrest fabric and is integrally formed with the transition layer and the first coating layer.
3. The composite ballistic panel of claim 1, wherein: the tubular crack arrest fabric is one of a two-dimensional woven structure, a three-dimensional woven structure or a knitted structure.
4. The composite ballistic panel of claim 1, wherein: the reinforcing fiber of the tubular crack arrest fabric is one or more of aramid fiber, carbon fiber, glass fiber, polyamide fiber and quartz fiber.
5. The composite ballistic panel of claim 1 wherein: the hot melt adhesive film is a plastic adhesive film or a non-woven net film, and the resin system of the hot melt adhesive film is EVA, TPU, PA or PES.
6. The method of cladding a composite ballistic panel of any one of claims 1-5, wherein: the method comprises the following steps:
s1: cutting the crack-stopping fabric: cutting tubular crack arrest fabrics with hot melt adhesive films coated on the inner and outer surfaces according to the size of the composite bulletproof plate product;
s2: the ceramic plate crack arrest fabric is coated: pre-flanging the inside of the caliber of one end of the tubular crack arrest fabric, placing a ceramic plate in the pre-flanged tubular crack arrest fabric, pulling out the ceramic plate and the pre-flanging to the end, which is not flanged, of the ceramic plate, so that the ceramic plate is completely coated on the outer surface of the tubular crack arrest fabric, and reserving sections at two ends of the tubular crack arrest fabric coated with the ceramic plate to form reserved ends;
s3: and (3) coating the crack-arresting fabric of the composite material back plate: coating the reserved end of the tubular crack arrest fabric on the lower surface or four circumferential surfaces or all the outer surfaces of the composite material back plate and placing the tubular crack arrest fabric coated ceramic plate above to form a bulletproof plate prefabricated product;
s4: and (3) composite molding of the bulletproof plate: and (3) putting the bulletproof plate prefabricated product into a vacuum bag, sealing and vacuumizing, and then carrying out hot-pressing composite curing molding to finally obtain a composite bulletproof plate finished product.
7. The coating process of claim 6, wherein: the reserved ends of the tubular crack arrest fabric in the step S3 are coated on four circumferential surfaces of the composite material backboard and are arranged above the ceramic plate coated with the tubular crack arrest fabric to form a composite bulletproof plate preform, and the method specifically comprises the following steps: the composite backboard is firstly placed above the ceramic plate coated with the tubular crack arrest fabric, one end of the tubular crack arrest fabric is firstly wound to the upper surface of the composite backboard and is fixed by a high-temperature adhesive tape, and then the other end of the tubular crack arrest fabric is wound to the upper surface of the composite backboard and is fixed by the high-temperature adhesive tape to form the composite bulletproof board prefabricated product.
8. The cladding method according to claim 6, characterized in that: the reserved end of the tubular crack arrest fabric in the step S3 is covered on the whole of the composite material back plate and is arranged above the ceramic plate covered with the tubular crack arrest fabric to form a composite bulletproof plate preform, and the method specifically comprises the following steps: and respectively nesting the two reserved ends of the tubular crack arrest fabric on the surface of the composite backboard, and then placing the composite crack arrest fabric on the ceramic board coated with the tubular crack arrest fabric to form a composite bulletproof board prefabricated product.
9. The cladding method according to claim 6, characterized in that: the reserved end of the tubular crack arrest fabric in the step S3 is coated on the lower surface of the composite material back plate and is arranged above the ceramic plate coated with the tubular crack arrest fabric to form a composite bulletproof plate preform, and the method specifically comprises the following steps: and S2, folding and covering both ends of the tubular crack arrest fabric above the ceramic plate, and then placing the composite material back plate above the tubular crack arrest fabric to form the composite bulletproof plate prefabricated product.
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