CN113028901A - Bulletproof composite armor and preparation method thereof - Google Patents
Bulletproof composite armor and preparation method thereof Download PDFInfo
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- CN113028901A CN113028901A CN202110301386.XA CN202110301386A CN113028901A CN 113028901 A CN113028901 A CN 113028901A CN 202110301386 A CN202110301386 A CN 202110301386A CN 113028901 A CN113028901 A CN 113028901A
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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
- F41H5/0435—Ceramic layers in combination with additional layers made of fibres, fabrics or plastics the additional layers being only fibre- or fabric-reinforced layers
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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
- B32B1/00—Layered products having a general shape other than plane
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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
- B32B25/00—Layered products comprising a layer of natural or synthetic rubber
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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
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
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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
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
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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
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/18—Handling of layers or the laminate
- B32B38/1866—Handling of layers or the laminate conforming the layers or laminate to a convex or concave profile
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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
- B32B5/02—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
- B32B5/12—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 characterised by the relative arrangement of fibres or filaments of different layers, e.g. the fibres or filaments being parallel or perpendicular to each other
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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
- B32B9/005—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising one layer of ceramic material, e.g. porcelain, ceramic tile
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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
- B32B9/043—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 of natural rubber or synthetic rubber
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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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- 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
- F41H5/007—Reactive armour; Dynamic armour
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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
A bulletproof composite armor and a preparation method thereof belong to the technical field of composite materials. The preparation method of the bulletproof composite armor comprises the following steps: s1, overlapping the multi-layer ultra-high molecular weight polyethylene UD cloth, fixing the outer edge of the overlapping material by a clamp, heating and stretching along the horizontal direction to generate prestress; and S2, vertically pressurizing and hot-pressing the bulletproof ceramic plate, the adhesive, the crack-stopping layer, the adhesive and the laminate along the Z direction under the condition of keeping the heating state and the stretching state of the laminate, and finally cooling to the room temperature to obtain the bulletproof composite armor. The bulletproof composite armor prepared by the invention is of a ceramic layer/crack arrest layer/ultra-high molecular weight polyethylene UD cloth laminated layer structure, wherein the ultra-high molecular weight polyethylene UD cloth laminated layer has certain prestress, and can reduce the sinking degree after the bulletproof composite armor is shot, thereby playing a better protection role.
Description
Technical Field
The invention relates to a technology in the field of composite materials, in particular to a bulletproof composite armor and a preparation method thereof.
Background
The traditional composite method of the bulletproof flashboard is to coat glue on the joint surface of the ceramic and PE laminated board, and bond the bulletproof ceramic and the PE laminated board together by applying external force and keeping the glue air-dried. The composite process method has the possibility that gaps or cavities are generated between the bulletproof ceramic and the PE laminated board due to slight curvature difference, and the bulletproof performance of the bulletproof inserting board which is not completely formed into a whole is reduced or even fails, so that the stability and the reliability of the product cannot be ensured. Therefore, in order to improve the stability and reliability of the composite of the bulletproof insert plate, the bulletproof ceramic, the adhesive film and the PE laminated plate are placed in a hot-pressing tank together in the prior art, the product is heated and pressurized by gas, the PE laminated plate becomes soft along with the rise of temperature, and the PE laminated plate, the adhesive film and the bulletproof ceramic are tightly attached together under the action of the gas pressure. However, in the autoclave process, the tensile strength of the PE is obviously reduced after the PE is subjected to multiple heating and cooling treatments, and the bulletproof capability of the ceramic PE composite deck is seriously affected.
The present invention has been made to solve the above-mentioned problems occurring in the prior art.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a bulletproof composite armor and a preparation method thereof, and the bulletproof composite armor is characterized in that ultra-high molecular weight polyethylene UD (unidirectional fabric) cloth is subjected to stretching treatment to form prestress, so that the impact bearing capacity of the bulletproof composite armor is improved.
The invention provides a preparation method of a bulletproof composite armor, which comprises the following steps:
s1, taking a plurality of ultra-high molecular weight polyethylene UD cloth (prepreg sheets with fibers arranged in a unidirectional parallel mode), laying the UD cloth in a crossed and overlapped mode according to the axial direction of 0 degree/90 degrees to obtain a laminated body, and fixing the outer edge of the laminated body by using a clamp; heating the laminated object by using a hot-pressing pressure head, and stretching the laminated object along the X direction and the Y direction while heating to generate prestress;
and S2, vertically pressurizing and hot-pressing the bulletproof ceramic plate, the adhesive, the crack-stopping layer, the adhesive and the laminate along the Z direction under the condition of keeping the heating state and the stretching state of the laminate, and finally cooling to the room temperature to obtain the bulletproof composite armor.
Preferably, in step S1, the hot-pressing head temperature is 100 to 150 ℃.
Preferably, in step S1, the laminate is stretched in the X direction to 1.5 to 2 times the original length of the laminate.
Preferably, in step S1, the laminate is stretched in the Y direction to 1.5 to 2 times the original length of the laminate.
Preferably, in step S2, the pressure is 10 to 25Mpa during the hot-press compounding, and the pressure is maintained for 10 to 60 min.
Preferably, the areal density of the ultra-high molecular weight polyethylene UD cloth is 16-20 kg/m2And the thickness is 5-20 mm.
Preferably, the crack-stopping layer is made of aramid fabric, the thickness of the aramid fabric is 0.5-1 mm, and the aramid fabric is twill; the surface of the aramid cloth is coated with epoxy resin.
The invention provides a bulletproof composite armor, which comprises a ceramic layer/crack arrest layer/UD cloth laminated layer which are arranged in a laminated mode, and the layers are bonded through an adhesive.
Technical effects
Compared with the prior art, the invention has the following technical effects:
1) on the basis of ensuring the stretching technology of the ultra-high molecular weight polyethylene UD cloth superposed material, the thermal compounding between the ultra-high molecular weight polyethylene UD cloth and the thermal compounding between the bulletproof ceramic plate and the ultra-high molecular weight polyethylene UD cloth superposed material are continuously finished at one time;
2) the thermal compounding between the bulletproof ceramic plate and the ultra-high molecular weight polyethylene UD cloth lamination is carried out after the ultra-high molecular weight polyethylene UD cloth lamination is heated, pressed and softened, so that the bulletproof ceramic plate and the ultra-high molecular weight polyethylene UD cloth lamination are tightly attached, and the bulletproof ceramic plate and the ultra-high molecular weight polyethylene UD cloth lamination are not easy to separate after the bulletproof composite armor is subjected to medium bullets;
3) the ultra-high molecular weight polyethylene UD cloth laminated body with the ultra-high tension has certain prestress, reduces the sinking degree of the ultra-high molecular weight polyethylene UD cloth laminated body after the bullet in the bulletproof composite armor, and improves the impact bearing capacity of the bulletproof composite armor, thereby playing a better protection role.
Drawings
FIG. 1 is a schematic drawing of an ultra-high molecular weight polyethylene UD cloth laminate;
FIG. 2 is a schematic view of hot-press stretching in example 1;
FIG. 3 is a schematic view of hot-press compounding in example 1;
FIG. 4 is a schematic view of hot-press stretching in example 2;
FIG. 5 is a schematic view of hot-press compounding in example 2;
FIG. 6 is a schematic view of hot-press compounding in example 3;
in the figure: the device comprises an upper hot pressing head 1, a lower hot pressing head 2, a pressure-resistant rubber pad 3, a laminate 4, an adhesive 5, aramid fabric 6 and a bulletproof ceramic plate 7.
Detailed Description
The invention is described in detail below with reference to the drawings and the detailed description. The experimental procedures, in which specific conditions are not specified in the examples, were carried out according to the conventional methods and conditions.
Example 1
The embodiment relates to a preparation method of a bulletproof composite armor, which comprises the following steps:
s1, getting pieces of ultra-high molecularPolyethylene UD cloth (surface density 16 kg/m)2) The laminated materials are alternately laminated and laid according to the axial direction of 0 degree/90 degrees to obtain a laminated material 4, the thickness of the laminated material 4 is 10mm, and the outer edge of the laminated material is fixed by a clamp;
a pressure-resistant rubber pad 3 and a bulletproof ceramic plate (0.08 m)2Individual chest insert plate) 7 and aramid cloth 6 with double-sided adhesive 5 coated thereon are aligned and stacked and then placed on the lower hot-pressing head 2 as shown in fig. 2; heating the lower hot-pressing head 2, and keeping the temperature at 150 ℃; heating the upper hot pressing head 1 to 150 ℃, then pressing the laminated object 4 downwards along the direction of the lower hot pressing head 2, wherein the pressing pressure is 5Mpa, so that the laminated object 4 is deformed, the lengths of the laminated object 4 in the X direction and the Y direction are respectively stretched to 1.5 times of the original lengths, as shown in figure 1, until the laminated object is completely attached to the upper hot pressing head 1, and prestress is generated;
s2, pressing the upper hot pressing head 1 to 25Mpa under the condition of keeping the heating state of 150 ℃ and the stretching state of the laminate, vertically pressing and hot-pressing the laminate 4, the adhesive 5, the aramid cloth 6, the adhesive 5 and the bulletproof ceramic plate 7 along the Z direction for compounding, and keeping the pressure for 60min, as shown in figure 3; in the hot pressing process, the pressure-resistant rubber pad 3 is adopted to perform pressure buffering on the bulletproof ceramic plate 7 with the curved surface structure, so that the bulletproof ceramic plate 7 is prevented from cracking; and finally cooling to room temperature, and removing the redundant laminates with the outer edges exceeding the bulletproof ceramic plate 7 to obtain the bulletproof composite armor.
Through tests, the prepared bulletproof composite armor is shot by 6M 80 type 7.62x51mm armor piercing bullets, the bullet speed is 850M/s, no perforation exists, the maximum deformation (recess) of a back plate formed by the laminate 4 is less than 10mm, and the requirements of defending 7.62mm armor piercing bullets are met.
Example 2
The embodiment relates to a preparation method of a bulletproof composite armor, which comprises the following steps:
s1, taking several ultra-high molecular weight polyethylene UD cloth (surface density 16 kg/m)2) The laminated materials are alternately laminated and laid according to the axial direction of 0 degree/90 degrees to obtain a laminated material 4, the thickness of the laminated material 4 is 10mm, and the outer edge of the laminated material is fixed by a clamp;
as shown in FIG. 4, aramid cloth 6 coated with adhesive 5 on both sides and a bulletproof ceramic plate (0.08 m) were combined2Individual chest insert) 7, aligned again on the laminate 4 and then stacked over the bulletproof ceramic plates 7Placing a pressure-resistant rubber pad 3, then placing the pressure-resistant rubber pad on the lower hot pressing head 2 in an aligned manner, moving the upper hot pressing head 1 towards the lower hot pressing head 2, and attaching the upper hot pressing head 1 to the pressure-resistant rubber pad 3; heating the lower hot pressing head 2 to 150 ℃, then pressurizing the laminated object 4 in the direction of the upper hot pressing head 1, wherein the pressurizing pressure is 5Mpa, so that the laminated object 4 is deformed, and the lengths of the laminated object 4 in the X direction and the Y direction are respectively stretched to 2 times of the original lengths until the laminated object is completely attached to the lower hot pressing head 2, so that prestress is generated;
s2, under the condition that the heating temperature is kept at 150 ℃ and the laminated body is in a stretching state, the lower hot pressing head 2 pressurizes the pressure to 25Mpa, the laminated body 4, the adhesive 5, the aramid cloth 6, the adhesive 5 and the bulletproof ceramic plate 7 are vertically pressurized and hot-pressed and compounded along the Z direction, and the pressure is kept for 60min, as shown in figure 5; and finally cooling to room temperature, and removing the redundant laminates with the outer edges exceeding the bulletproof ceramic plate 7 to obtain the bulletproof composite armor.
Through tests, the prepared bulletproof composite armor is shot by 6M 80 type 7.62x51mm armor piercing bullets, the bullet speed is 850M/s, no perforation exists, the maximum deformation (recess) of a back plate formed by the laminate 4 is less than 10mm, and the requirements of defending 7.62mm armor piercing bullets are met.
Example 3
The embodiment relates to a preparation method of a bulletproof composite armor, which comprises the following steps:
s1, taking several ultra-high molecular weight polyethylene UD cloth (surface density 16 kg/m)2) The outer edges of the laminates are fixed by a clamp, and the laminates are crossly stacked and laid according to the axial direction of 0 degree/90 degrees to obtain the laminates 4, wherein the thickness of each laminate 4 is 15 mm;
the bulletproof ceramic plate (0.5 m)2An instrument bulletproof flat plate) 7 and aramid cloth 6 with adhesive 5 coated on both sides are aligned and stacked and then placed on the lower hot-pressing head 2, and the lower hot-pressing head 2 is heated and kept at the temperature of 150 ℃; heating the upper hot pressing head 1 to 150 ℃, then pressing the laminated object 4 downwards along the direction of the lower hot pressing head 2, wherein the pressing pressure is 5Mpa, so that the laminated object 4 is deformed, and the lengths of the laminated object 4 in the X direction and the Y direction are respectively stretched to 2 times of the original lengths, so as to generate prestress;
s2, pressing the upper hot pressing head 1 to 25Mpa under the condition of keeping the heating state of 150 ℃ and the stretching state of the laminate, vertically pressing and hot-pressing the laminate 4, the adhesive 5, the aramid cloth 6, the adhesive 5 and the bulletproof ceramic plate 7 along the Z direction for compounding, and keeping the pressure for 60min, as shown in figure 6; finally, cooling to room temperature, and removing the redundant laminates with the outer edges exceeding the bulletproof ceramic plate 7 to obtain the bulletproof composite armor;
the test shows that the prepared bulletproof composite armor is shot by 3 pieces of 12.7mm armor-piercing combustion bullets, the bullet speed is 870m/s, no perforation exists, the maximum deformation (recess) of a back plate formed by the superposed material 4 is less than 10mm, and the requirement of armor-piercing combustion bullets is met.
It is to be emphasized that: the above embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and all simple modifications, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.
Claims (9)
1. A method of making a ballistic resistant composite armor comprising the steps of:
s1, taking a plurality of ultra-high molecular weight polyethylene UD fabrics, laying the UD fabrics in a cross-stacking manner according to the axial direction of 0 degree/90 degrees to obtain a lamination, and fixing the outer edge of the lamination by using a clamp; heating the laminated object by using a hot-pressing pressure head, and stretching the laminated object along the X direction and the Y direction while heating to generate prestress;
and S2, vertically pressurizing and hot-pressing the bulletproof ceramic plate, the adhesive, the crack-stopping layer, the adhesive and the laminate along the Z direction under the condition of keeping the heating state and the stretching state of the laminate, and finally cooling to the room temperature to obtain the bulletproof composite armor.
2. The method for producing a bulletproof composite armor according to claim 1, wherein in step S1, the hot-pressing head temperature is 100 to 150 ℃.
3. The method of claim 1, wherein in step S1, the laminate is stretched in the X direction to 1.5 to 2 times the original length of the laminate.
4. The method of claim 1, wherein in step S1, the laminate is stretched in the Y direction to 1.5 to 2 times the original length of the laminate.
5. The method for preparing the bulletproof composite armor according to claim 1, wherein in step S2, the pressure is 10 to 25Mpa during hot-press compounding, and the pressure is maintained for 10 to 60 min.
6. The method of making ballistic resistant composite armor of claim 1 wherein said number of hot press completions is one.
7. The method for preparing the bulletproof composite armor according to claim 1, wherein the areal density of the ultra-high molecular weight polyethylene UD cloth is 16-20 kg/m2And the thickness is 5-20 mm.
8. The method for preparing the bulletproof composite armor according to claim 1, wherein the crack-stopping layer is made of aramid fabric, the thickness of the aramid fabric is 0.5-1 mm, and twill; the surface of the aramid cloth is coated with epoxy resin.
9. A ballistic resistant composite armor, made by the method of any one of claims 1 to 8, comprising a stack of ceramic/crack stop/ultra high molecular weight polyethylene UD cloth layers arranged one on top of the other, bonded together by means of an adhesive.
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| CN202110301386.XA CN113028901A (en) | 2021-03-22 | 2021-03-22 | Bulletproof composite armor and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114909953A (en) * | 2022-05-20 | 2022-08-16 | 江南大学 | Core layer composite material for protecting flying stones |
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