CN115900443A - Aramid paper composite armor plate and preparation method thereof - Google Patents
Aramid paper composite armor plate and preparation method thereof Download PDFInfo
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Abstract
The invention provides an aramid paper composite armor plate which comprises an impact resistant layer, a supporting layer and a deformation energy absorption layer which are sequentially stacked, wherein the impact resistant layer is B 4 The support layer is a carbon fiber composite material layer, the deformation energy absorption layer is an aramid paper layer and a polyethylene composite layer, and the aramid paper layer is close to the support layer end. The application provides a compound armor plate of aramid fiber paper is through introducing the aramid fiber paper layer as warping the energy absorption layer to compound with other layers, mutually support between each layer, under the circumstances of guaranteeing the protective force, effectively reduced the areal density of armor plate.
Description
Technical Field
The invention relates to the technical field of bulletproof armor, in particular to an aramid fiber paper composite armor plate and a preparation method thereof.
Background
The bulletproof performance and the flight performance of the military helicopter are natural spear bodies, the flight performance of the military helicopter is influenced by the overweight bulletproof armor, the battlefield viability of the military helicopter is poor due to the lack of the armor, and the damage probability is increased. In order to solve the contradiction, the most reasonable configuration of the bulletproof armor system must be achieved, the problems of light weight and strong strength are fundamentally solved, and the adoption of the light weight high-strength protective material to reduce the power load proportion occupied by the bulletproof armor in the core protective area struck by the military helicopter is the only feasible development direction.
At present, the domestic model is generally adopted B 4 The armor plate prepared from the C ceramic and high-performance fiber composite material has the capability of preventing 12.7mm armor-piercing combustion bomb (API) and has the surface density of 45kg/m 2 Left and right, only 1 hit can be resisted. In order to further reduce weight and enhance the composite armor, lighter, stronger and tougher materials are needed to be applied to a helicopter bulletproof system so as to improve the bullet-resistant capacity of the helicopter bulletproof system, and meanwhile, the composite armor structure is optimized through structural design, so that the requirement of high viability of military helicopter drivers and passengers undertaking main combat missions is met.
Disclosure of Invention
The aramid paper composite armor plate can achieve stronger bulletproof capability under the condition of lower surface density, namely, the light weight and the bulletproof property are considered at the same time.
In view of this, the application provides an aramid paper composite armor plate, including shock resistance layer, supporting layer and the deformation energy absorption layer that stack in proper order and set up, the shock resistance layer is B 4 The support layer is a carbon fiber composite material layer, the deformation energy absorption layer is an aramid paper layer and a polyethylene composite layer, and the aramid paper layer is close to the support layer end.
Preferably, the carbon fiber composite material layer is prepared from high-modulus carbon fibers and thermosetting epoxy resin, wherein the mass percent of the high-modulus carbon fibers is 60-70%, and the mass percent of the thermosetting epoxy resin is 30-40%.
Preferably, the high modulus carbon fiber is selected from one or more of T700 carbon fiber, T800 carbon fiber, T1000 carbon fiber, T1100 carbon fiber, M40 carbon fiber and M50 carbon fiber.
Preferably, the aramid paper layer is formed by laminating a plurality of single sheets of aramid paper, and the thickness of each single sheet of aramid paper is 0.02-0.80 mm independently.
Preferably, the polyethylene composite layer is prepared from 60-80% by mass of polyethylene fibers and 20-40% by mass of thermoplastic resin.
Preferably, the polyethylene fiber is selected from high-modulus polyethylene, the weight average molecular weight of the high-modulus polyethylene is 300-700 ten thousand, the tensile modulus is larger than or equal to 100GPa, and the thermoplastic resin is selected from polyurethane.
Preferably, B is 4 The thickness of the C ceramic layer is 5-10 mm, the thickness of the carbon fiber composite material layer is 3-8 mm, the thickness of the aramid paper layer is 3-8 mm, and the thickness of the polyethylene composite layer is 5-15 mm.
The application also provides a preparation method of the aramid paper composite armor plate, which comprises the following steps:
and stacking the impact resistant layer, the supporting layer and the deformation energy absorption layer in sequence, bonding the layers, and carrying out hot pressing to obtain the aramid paper composite armor plate.
Preferably, the hot pressing temperature is 100-150 ℃, and the pressure is 1-5 MPa.
The application provides a compound armor plate of aramid fiber paper, it is including shock resistance layer, supporting layer and the deformation energy absorption layer that superposes in proper order and set up, the shock resistance layer is B 4 The support layer is a carbon fiber composite material layer, the deformation energy absorption layer is an aramid paper layer and a polyethylene composite layer, and the aramid paper layer is close to the support layer end. Aramid paper layers are introduced into the composite armor plate, and through the design of each layer, the impact resistant layer, the supporting layer and the deformation energy absorption layer which are sequentially stacked are formed, and the layers are mutually matched and can be lower than 42kg/m in areal density 2 Under the condition, 12.7mm API bullet protection is realized, and the defensive speed is more than 488m/s.
Detailed Description
For a further understanding of the invention, reference will now be made to the preferred embodiments of the invention by way of example, and it is to be understood that the description is intended to further illustrate features and advantages of the invention, and not to limit the scope of the claims.
The composite armor plate is a combination of up to four different material layers, generally, the more the layers of the composite bulletproof armor plate are, the more the interface effect is generated, the more the protection capability of the armor plate can be effectively improved, but simply increasing the multiple layers of materials inevitably increases the weight of the armor plate, and also increases the surface density of the armor plate, which is not in accordance with the design principle of light weight. On this basis, aramid paper layer has been introduced to this application to optimize each layer material, formed shock resistance layer, supporting layer and the deformation energy absorbing layer that stacks gradually, mutually support between each layer, make the composite armor board that obtains have lightweight and shellproof effect concurrently. Specifically, the aramid paper composite armor plate provided by the embodiment of the invention comprises an impact-resistant layer, a supporting layer and a deformation energy-absorbing layer which are sequentially stacked, wherein the impact-resistant layer is B 4 C, a ceramic layer, wherein the supporting layer is a carbon fiber composite material layer, and the deformation energy absorption layer isThe support layer comprises an aramid paper layer and a polyethylene composite layer, wherein the aramid paper layer is close to the end of the support layer.
In the application, the impact resistant layer has the functions of crushing and absorbing kinetic energy in the penetration process of the projectile, enabling the projectile to deform by means of high hardness, and crushing and abrading the projectile in the penetration process of the projectile to passivate the projectile. The invention uses pure B 4 The C ceramic is used as an impact resistant layer.
The supporting layer is used for supporting the impact resistant layer to be fully broken and absorbing the kinetic energy of the projectile. The carbon fiber composite material has high strength and modulus, and can further support the sufficient breakage of the impact resistant layer and enhance the protection capability of the armor plate. The carbon fiber reinforced epoxy resin composite material has high strength and modulus as a supporting layer, is low in density and excellent in shock resistance, can effectively support the shock resistant layer to be fully broken, absorbs the kinetic energy of the projectile, and does not excessively increase the surface density of the armor plate. In the application, the carbon fiber composite material layer is prepared from high-modulus carbon fibers and thermosetting epoxy resin, wherein the carbon fiber reinforced epoxy resin composite material is used, and the carbon fibers are high-strength and high-modulus grades such as T700, T800, T1000, T1100, M40 and M50; the thermosetting epoxy resin is well known to those skilled in the art and is not particularly limited in this application. The mass percent of the high modulus carbon fiber is 60-70%, and the mass percent of the high modulus carbon fiber is 60%, 61%, 62%, 63%, 64%, 65%, 66%, 67%, 68%, 69% or 70%; the thermosetting epoxy resin is 30 to 40 mass%, and for example, the thermosetting epoxy resin is 30 mass%, 31 mass%, 32 mass%, 33 mass%, 34 mass%, 35 mass%, 36 mass%, 37 mass%, 38 mass%, 39 mass%, 40 mass%. The method for preparing the carbon fiber composite layer is well known to those skilled in the art, and the present application is not particularly limited thereto.
The deformation energy absorption layer is used for absorbing kinetic energy of the projectile and finally capturing the projectile. The aramid paper layer is soft in texture, high in strength, low in density and excellent in impact resistance, and can absorb energy through large deformation to reduce the surface density of the armor plate. In the application, the aramid paper layer is formed by laminating a plurality of single aramid paper layers; the thickness of the single-layer aramid paper is 0.02-0.80 mm, preferably 0.04-0.30 mm; the thickness of each aramid paper layer in the aramid paper layer can be the same or different. The polyethylene composite material layer in the deformation energy absorption layer is prepared from a polyethylene composite material; the ultra-high molecular weight polyethylene composite material can generate larger deformation, has low density and can fully absorb the kinetic energy of the projectile. Further, in the polyethylene composite material, the mass percentage of the polyethylene fiber is 60% to 80%, illustratively, the mass percentage of the polyethylene fiber is 60%, 61%, 62%, 63%, 64%, 65%, 66%, 67%, 68%, 69%, 70%, 71%, 72%, 73%, 74%, 75%, 76%, 77%, 78%, 79%, or 60%, and the mass percentage of the thermoplastic resin is 20% to 40%, illustratively, the mass percentage of the thermoplastic resin is 20%, 21%, 22%, 23%, 24%, 25%, 26%, 27%, 28%, 29%, 30%, 31%, 32%, 33%, 34%, 35%, 36%, 37%, 38%, 39%, or 40%. The preparation of the polyethylene composite layer is prepared according to methods well known to those skilled in the art, and the application is not particularly limited.
Further, B is 4 The thickness of the C ceramic layer is any value between 7mm and 10mm, the thickness of the carbon fiber composite material layer is any value between 4mm and 8mm, the thickness of the aramid paper layer is any value between 4mm and 8mm, and the thickness of the polyethylene composite layer is any value between 5mm and 12mm.
More specifically, the B 4 The thickness of the C ceramic layer can be independently selected to be 7mm, 8mm, 9mm or 10mm; the thickness of the carbon fiber composite material layer can be independently selected to be 4mm, 5mm, 6mm, 7mm or 8mm; the thickness of the polyethylene composite layer can be independently selected to be 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm or 12mm.
The invention also provides a preparation method of the aramid paper composite armor plate, which comprises the following steps:
and stacking the impact resistant layer, the supporting layer and the deformation energy absorption layer in sequence, bonding the layers by adopting a thermoplastic adhesive film, and carrying out hot pressing to obtain the aramid paper composite armor plate.
In the preparation method, the hot pressing temperature can be 100-150 ℃, and the pressure can be 1-5 MPa; specifically, the hot pressing temperature is 100-120 ℃, and the pressure is 1-3 MPa.
For further understanding of the present invention, the following provides a detailed description of the aramid paper composite armor plate and the preparation method thereof with reference to the following examples, and the scope of the present invention is not limited by the following examples.
The examples, which are not specifically illustrated, employ drugs and equipment, all of which are conventional in the art. The experimental procedures, in which specific conditions are not indicated in the examples, were carried out according to conventional conditions, such as those described in the literature, in books, or as recommended by the manufacturer. Unless otherwise indicated, the raw materials and reagents used in the following examples are all commercially available products or can be prepared by known methods.
The following examples used the starting materials: b is 4 C, ceramic, a carbon fiber composite material, an aramid paper layer, a polyethylene composite layer and an adhesive film.
Example 1
1. Processing and producing each material layer according to the size:
impact resistance layer: the raw material is B 4 C, ceramic with the thickness of 9mm;
a support layer: the raw material is a carbon fiber composite material, wherein the carbon fiber is T700 and the same grade, the mass percent of the carbon fiber is 60%, the mass percent of the epoxy resin is 40%, and the thickness of the carbon fiber composite material is 4.5mm;
deformation energy absorption layer: the raw material is aramid paper, the aramid paper is formed by stacking 60 sheets of aramid paper with the single-layer thickness of 0.085mm, and the total thickness is 5.1mm; the weight percentage of the polyethylene fiber in the polyethylene composite layer is 80%, the weight percentage of the polyurethane resin is 20%, and the thickness of the polyethylene composite layer is 8mm;
2. sequentially stacking the impact-resistant layer, the supporting layer and the deformation energy-absorbing layer in sequence, and bonding the layers by using an EVA (ethylene vinyl acetate) adhesive film;
3. and (3) putting the materials of the layers fixed in the step (2) into an autoclave for compounding, performing hot-press molding at the temperature of 120 ℃ under the pressure of 1MPa to form an armor plate with an integrated composite structure, cooling along with a furnace, cooling to normal temperature, and taking out to obtain the composite armor plate.
The test of the composite armor plate is carried out according to the class III 2A grade specified by MIL-PRF-46103E, 12.7mm API bullets can be successfully protected, and V is more than or equal to 488m/s.
Example 2
1. Processing and producing each material layer according to the size:
impact resistance layer: the raw material is B 4 C, ceramic with the thickness of 9mm;
a support layer: the raw material is a carbon fiber composite material, the components are the same as those of the embodiment 1, and the thickness is 4.5mm;
deformation energy absorption layer: the raw material is aramid paper, the aramid paper is formed by stacking 60 sheets of aramid paper with the single-layer thickness of 0.085mm, and the total thickness is 5.1mm; a polyethylene composite layer having the same composition as in example 1 and a thickness of 7mm;
2. sequentially stacking the impact-resistant layer, the supporting layer and the deformation energy-absorbing layer in sequence, and bonding the layers by using an EVA (ethylene vinyl acetate) adhesive film;
3. and (3) putting the materials of the layers fixed in the step (2) into an autoclave for compounding, carrying out hot-press molding at the temperature of 120 ℃ under the pressure of 1MPa to form an armor plate with an integrated composite structure, cooling along with a furnace, cooling to normal temperature, and taking out to obtain the composite armor plate.
The test of the composite armor plate is carried out according to the class III 2A grade specified by MIL-PRF-46103E, 12.7mm API bullets can be successfully protected, and V is more than or equal to 488m/s.
Example 3
1. Processing and producing each material layer according to the size:
impact resistance layer: the raw material is B 4 C, ceramic with the thickness of 8mm;
a support layer: the raw material is a carbon fiber composite material, the components are the same as those of the embodiment 1, and the thickness is 5.5mm;
deformation energy absorption layer: the raw material is aramid paper, the aramid paper is formed by stacking 120 pieces of aramid paper with single-layer thickness of 0.047mm, and the total thickness is 5.64mm; a polyethylene composite layer having the same composition as in example 1 and a thickness of 8mm;
2. sequentially stacking the impact-resistant layer, the supporting layer and the deformation energy-absorbing layer in sequence, and bonding the layers by using a PVB adhesive film;
3. and (3) putting the materials of the layers fixed in the step (2) into an autoclave for compounding, carrying out hot-press molding at the temperature of 120 ℃ under the pressure of 1MPa to form an armor plate with an integrated composite structure, cooling along with a furnace, cooling to normal temperature, and taking out to obtain the composite armor plate.
The test of the composite armor plate is carried out according to the class III 2A grade specified by MIL-PRF-46103E, 12.7mm API bullets can be successfully protected, and V is more than or equal to 488m/s.
Example 4
1. Processing and producing each material layer according to the size:
and (3) impact resistant layer: the raw material is B 4 C ceramic with the thickness of 8mm.
A support layer: the raw material is a carbon fiber composite material, the components are the same as those of the embodiment 1, and the thickness is 5.5mm;
deformation energy absorption layer: the raw material is aramid paper, single-layer aramid paper with the thickness of 0.18mm is used, and the aramid paper is formed by laminating 30 pieces of aramid paper, and the total thickness is 5.4mm; the polyethylene composite layer has the same components as the polyethylene composite layer in the embodiment 1 and the thickness of 8mm;
2. sequentially stacking the impact-resistant layer, the supporting layer and the deformation energy-absorbing layer in sequence, and bonding the layers by using a PVB adhesive film;
3. and (3) putting the materials of the layers fixed in the step (2) into an autoclave for compounding, carrying out hot-press molding at the temperature of 120 ℃ under the pressure of 1MPa to form an armor plate with an integrated composite structure, cooling along with a furnace, cooling to normal temperature, and taking out to obtain the composite armor plate.
The test of the composite armor plate is carried out according to the class III 2A grade specified by MIL-PRF-46103E, 12.7mm API bullets can be successfully protected, and V is more than or equal to 488m/s.
Example 5
1. Processing and producing each material layer according to the size:
impact resistance layer: the raw material is B 4 C, ceramic with the thickness of 9mm;
a support layer: the raw material is a carbon fiber composite material, the components are the same as those of the embodiment 1, and the thickness is 4.5mm;
deformation energy absorption layer: the raw material is aramid paper, the aramid paper is formed by stacking 8 sheets of aramid paper with the single-layer thickness of 0.755mm, and the total thickness is 6.04mm; the polyethylene composite layer has the same components as the polyethylene composite layer in the embodiment 1 and the thickness of 7mm;
2. sequentially stacking the impact-resistant layer, the supporting layer and the deformation energy-absorbing layer in sequence, and bonding the layers by using an EVA (ethylene vinyl acetate) adhesive film;
3. putting the materials fixed in the step 2 into an autoclave for compounding, performing hot-press molding at the temperature of 120 ℃ and under the pressure of 1MPa to form an armor plate with an integrated composite structure, cooling along with a furnace, cooling to normal temperature, and taking out to obtain a composite armor plate;
the test of the composite armor plate is carried out according to the class III 2A grade specified by MIL-PRF-46103E, 12.7mm API bullets can be successfully protected, and V is more than or equal to 488m/s.
Example 6
1. Processing and producing each material layer according to the size:
impact resistance layer: the raw material is B 4 C, ceramic with the thickness of 9mm;
a support layer: the raw material is a carbon fiber composite material, wherein the carbon fiber is T800 and the same grade, the mass percent of the carbon fiber is 64 percent, the mass percent of the epoxy resin is 36 percent, and the thickness of the carbon fiber composite material is 4.5mm;
deformation energy absorption layer: the raw material is aramid paper, the aramid paper is formed by stacking 60 sheets of aramid paper with the single-layer thickness of 0.085mm, and the total thickness is 5.1mm; the weight percentage of the polyethylene fibers in the polyethylene composite layer is 76%, the weight percentage of the polyurethane resin is 24%, and the thickness of the polyethylene composite layer is 8mm;
2. sequentially stacking the impact-resistant layer, the supporting layer and the deformation energy-absorbing layer in sequence, and bonding the layers by using an EVA (ethylene vinyl acetate) adhesive film;
3. and (3) putting the materials of the layers fixed in the step (2) into an autoclave for compounding, carrying out hot-press molding at the temperature of 120 ℃ under the pressure of 1MPa to form an armor plate with an integrated composite structure, cooling along with a furnace, cooling to normal temperature, and taking out to obtain the composite armor plate.
The composite armor plate is tested according to class III class 2A level specified by MIL-PRF-46103E, 12.7mm API bombs can be successfully protected, and V is more than or equal to 488m/s.
Example 7
1. Processing and producing each material layer according to the size:
impact resistance layer: the raw material is B 4 C, ceramic with the thickness of 9mm;
a support layer: the raw material is a carbon fiber composite material, wherein the carbon fiber is T1000 and the same grade, the mass percent of the carbon fiber is 67%, the mass percent of the epoxy resin is 33%, and the thickness of the carbon fiber composite material is 4.5mm;
deformation energy absorption layer: the raw material is aramid paper, the aramid paper is formed by stacking 60 sheets of aramid paper with the single-layer thickness of 0.085mm, and the total thickness is 5.1mm; the weight percentage of the polyethylene fiber in the polyethylene composite layer is 70%, the weight percentage of the polyurethane resin is 30%, and the thickness of the polyethylene composite layer is 8mm;
2. sequentially stacking the impact-resistant layer, the supporting layer and the deformation energy-absorbing layer in sequence, and bonding the layers by using an EVA (ethylene vinyl acetate) adhesive film;
3. and (3) putting the materials of the layers fixed in the step (2) into an autoclave for compounding, carrying out hot-press molding at the temperature of 120 ℃ under the pressure of 1MPa to form an armor plate with an integrated composite structure, cooling along with a furnace, cooling to normal temperature, and taking out to obtain the composite armor plate.
The test of the composite armor plate is carried out according to the class III 2A grade specified by MIL-PRF-46103E, 12.7mm API bullets can be successfully protected, and V is more than or equal to 488m/s.
Example 8
1. Processing and producing each material layer according to the size:
impact resistance layer: the raw material is B 4 C, ceramic with the thickness of 9mm;
a support layer: the raw material is a carbon fiber composite material, wherein the carbon fiber is M40 and the same grade, the mass percent of the carbon fiber is 70%, the mass percent of the epoxy resin is 30%, and the thickness of the carbon fiber composite material is 4.5mm;
deformation energy absorption layer: the raw material is aramid paper, the aramid paper is formed by stacking 60 sheets of aramid paper with the single-layer thickness of 0.085mm, and the total thickness is 5.1mm; the weight percentage of the polyethylene fibers in the polyethylene composite layer is 73 percent, the weight percentage of the polyurethane resin is 27 percent, and the thickness of the polyethylene composite layer is 8mm;
2. sequentially stacking the impact-resistant layer, the supporting layer and the deformation energy-absorbing layer in sequence, and bonding the layers by using an EVA (ethylene vinyl acetate) adhesive film;
3. and (3) putting the materials of the layers fixed in the step (2) into an autoclave for compounding, carrying out hot-press molding at the temperature of 120 ℃ under the pressure of 1MPa to form an armor plate with an integrated composite structure, cooling along with a furnace, cooling to normal temperature, and taking out to obtain the composite armor plate.
The test of the composite armor plate is carried out according to the class III 2A grade specified by MIL-PRF-46103E, 12.7mm API bullets can be successfully protected, and V is more than or equal to 488m/s.
Comparative examples 1, 2 and 3 were prepared in the same manner as in examples except for the difference in constituent parts as shown in table 1; the measured data of aramid paper composite armor examples 1-8 and comparative examples 1-3 are shown in table 1:
table 1 data of layers and performance data table of composite armor plate for examples 1 to 5 and comparative examples 1 to 3
As shown in the above table, comparative example 1, using a 9mm thick B 4 The C ceramic, the carbon fiber composite material with the thickness of 7mm and the polyethylene composite material with the thickness of 10mm are laminated to prepare the composite armor, and the areal density is 43.7kg/m 2 The test is carried out according to class III 2A level specified by US army standard MIL-PRF-46103E, 12.7mmAPI bullet is protected, V is more than or equal to 488m/s, the protection is successful, and the breakdown is not caused.
Comparative example 2, the thickness of the carbon fiber composite material in the comparative example 1 is reduced from 7mm to 6mm, and the rest is unchanged, so that the surface density of the obtained composite armor is 42.1kg/m 2 The test is carried out according to class III 2A level specified by US army standard MIL-PRF-46103E, 12.7mmAPI bullets are protected, V is larger than or equal to 488m/s, the protection is not successful, and the armor is broken down.
Comparative example 3, in comparative example 1, polyethyleneThe thickness of the alkene composite material is reduced from 10mm to 8mm, and the rest is unchanged, so that the surface density of the obtained composite armor is 41.7kg/m 2 The test is carried out according to class III class 2A level specified by US army standard MIL-PRF-46103E, 12.7mm API bombs are protected, V is more than or equal to 488m/s, the armor is not successfully protected, and the armor is broken down.
Three comparative examples show that comparative example 1 composite armor areal density of 43.7kg/m 2 The armor can be successfully protected, after the thickness of the carbon fiber or polyethylene composite material is reduced, the surface density is reduced, the protection effect is reduced, and the armor is punctured and is not successfully protected.
Example 1, on the basis of comparative example 3, B 4 The thickness of the C ceramic and polyethylene composite material is not changed, the thickness of the carbon fiber composite material is reduced to 4.5mm, the aramid fiber paper layer with the thickness of 5.1mm is added, and the areal density of the composite armor is 41.72kg/m 2 And the test is carried out according to class III 2A grade specified by US army standard MIL-PRF-46103E, the protection is carried out by 12.7mmAPI bullet, V is more than or equal to 488m/s, the protection is successful, and the breakdown is not caused.
Example 2 based on example 1, the thickness of the polyethylene composite material is further reduced to 7mm, and the areal density of the composite armor is 40.72kg/m 2 The protection can still be successfully carried out without breakdown.
Example 3, based on example 1, B 4 The thickness of the C ceramic is reduced from 9mm to 8mm, an aramid paper layer with the thickness of 5.64mm is used, and the areal density of the composite armor is 41kg/m 2 The protection can be successfully carried out without breakdown.
Example 4 the aramid paper layer with the thickness of 5.4mm is changed on the basis of the example 3, and the surface density of the composite armor is 41.96kg/m 2 The protection can be successfully carried out without breakdown.
Example 5 the aramid paper layer of 6.04mm thickness was changed to example 2, and the areal density of the composite armor was 42.1kg/m 2 The protection can be successfully carried out without breakdown.
Examples 6 to 8 were carried out by changing the components of the carbon fiber composite material including the fiber number, the fiber content and the resin content in addition to example 1; the components of the polyethylene composite layer are changed, including the fiber and resin contents; according to the data, the total areal density of the composite armor is only slightly changed, and the composite armor can be successfully protected and is not broken down.
The above description of the embodiments is only intended to facilitate the understanding of the method of the invention and its core idea. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. The aramid paper composite armor plate comprises an impact resistant layer, a supporting layer and a deformation energy absorption layer which are sequentially stacked, and is characterized in that the impact resistant layer is B 4 The support layer is a carbon fiber composite material layer, the deformation energy absorption layer is an aramid paper layer and a polyethylene composite layer, and the aramid paper layer is close to the support layer end.
2. The aramid paper composite armor plate according to claim 1, wherein the carbon fiber composite material layer is prepared from high-modulus carbon fiber and thermosetting epoxy resin, the mass percent of the high-modulus carbon fiber is 60-70%, and the mass percent of the thermosetting epoxy resin is 30-40%.
3. The aramid paper composite armor plate of claim 2, wherein the high modulus carbon fiber is selected from one or more of T700 carbon fiber, T800 carbon fiber, T1000 carbon fiber, T1100 carbon fiber, M40 carbon fiber, and M50 carbon fiber.
4. The aramid paper composite armor plate of claim 1, wherein the aramid paper layer is composed of a plurality of single aramid paper laminates, and the thickness of each single aramid paper laminate is 0.02-0.80 mm independently.
5. The aramid paper composite armor plate according to claim 1, wherein the polyethylene composite layer is prepared from 60-80% by mass of polyethylene fibers and 20-40% by mass of thermoplastic resin.
6. The aramid paper composite armor plate of claim 5, wherein the polyethylene fiber is selected from high modulus polyethylene, the high modulus polyethylene has a weight average molecular weight of 300-700 ten thousand, a tensile modulus of 100GPa or more, and the thermoplastic resin is selected from polyurethane.
7. The aramid paper composite armor plate of claim 1, wherein B is 4 The thickness of the C ceramic layer is 5-10 mm, the thickness of the carbon fiber composite material layer is 3-8 mm, the thickness of the aramid paper layer is 3-8 mm, and the thickness of the polyethylene composite layer is 5-15 mm.
8. The preparation method of the aramid paper composite armor plate of claim 1, comprising the steps of:
and stacking the impact resistant layer, the supporting layer and the deformation energy absorption layer in sequence, bonding the layers, and carrying out hot pressing to obtain the aramid paper composite armor plate.
9. The method according to claim 8, wherein the hot pressing is performed at a temperature of 100 to 150 ℃ and a pressure of 1 to 5MPa.
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| CN115823952A (en) * | 2023-02-06 | 2023-03-21 | 中国航发北京航空材料研究院 | Light bulletproof composite armor plate and preparation method thereof |
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2023
- 2023-02-06 CN CN202310068213.7A patent/CN115900443A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115823952A (en) * | 2023-02-06 | 2023-03-21 | 中国航发北京航空材料研究院 | Light bulletproof composite armor plate and preparation method thereof |
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