CN109334177B - Composite bulletproof material and preparation method thereof - Google Patents
Composite bulletproof material and preparation method thereof Download PDFInfo
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- CN109334177B CN109334177B CN201811203901.5A CN201811203901A CN109334177B CN 109334177 B CN109334177 B CN 109334177B CN 201811203901 A CN201811203901 A CN 201811203901A CN 109334177 B CN109334177 B CN 109334177B
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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
- B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
- B32B2260/02—Composition of the impregnated, bonded or embedded layer
- B32B2260/021—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
- B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
- B32B2260/04—Impregnation, embedding, or binder material
- B32B2260/046—Synthetic resin
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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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- Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
- Laminated Bodies (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
Abstract
The invention discloses a composite bulletproof material and a preparation method thereof, wherein the composite bulletproof material comprises a surface layer, a middle layer and a bottom layer, wherein the surface layer is a light metal armor sheet or a ceramic matrix composite armor sheet, the middle layer is a flexible high-performance fiber fabric layer, the fabric comprises aramid fiber or ultra-high molecular weight polyethylene fiber fabric, and the bottom layer is high-performance fiber fabric impregnated with shear thickening fluid. The soft and hard combined composite bulletproof material has good impact resistance, strong anti-bullet shearing energy, the middle layer is a flexible high-performance fiber fabric layer, the high-strength and high-toughness composite bulletproof material has the characteristics of high tensile strength and slippage performance under high-speed bullet, the bottom layer is a shearing thickening liquid impregnated high-performance fiber fabric composite material, the friction performance of yarns is improved, and more energy is absorbed. The composite bulletproof material of the invention can absorb energy up to 94.85J under the condition that the bullet speed is 500 m/s.
Description
Technical Field
The invention belongs to the technical field of bulletproof materials, and particularly relates to a composite bulletproof material and a preparation method thereof.
Background
Shear Thickening Fluid (Shear Thickening Fluid), which is a novel protective material that has been raised in Meiying in the beginning of the 21 st century and is further developed in China, contains a plurality of special particles in free suspension, and nano spherical particles which are one of the hardest non-metallic materials in nature, and has flexibility in normal times and firmness when being impacted. At present, the material is widely used in human body protection equipment as a novel material.
The shear thickening fluid (STF for short) is used for dipping the high-performance fabric, so that the flexible liquid bulletproof material can be prepared, the thickness is thinner, the protection performance is better, the protection material has good protection performance in the impact protection of low-speed bullets, and the protection performance is obviously reduced when the impact speed of the bullets reaches more than 300 m/s.
Disclosure of Invention
This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. In this section, as well as in the abstract and the title of the invention of this application, simplifications or omissions may be made to avoid obscuring the purpose of the section, the abstract and the title, and such simplifications or omissions are not intended to limit the scope of the invention.
The present invention has been made in view of the above-mentioned technical drawbacks.
Accordingly, in one aspect of the present invention, the present invention overcomes the deficiencies of the prior art by providing a composite ballistic material.
In order to solve the technical problems, the invention provides the following technical scheme: the utility model provides a composite bulletproof material, its includes, surface course, middle level, bottom, wherein, the surface course includes light metal armor piece or ceramic matrix composite hard armor piece, the middle level includes flexible high performance fiber fabric layer, the fabric includes aramid fiber or ultra high molecular weight polyethylene fiber fabric, the bottom includes the high performance fiber fabric of shear thickening fluid flooding.
As a preferred embodiment of the composite bulletproof material of the present invention: the thickness ratio of the middle layer to the bottom layer is 2: 1.
as a preferred embodiment of the composite bulletproof material of the present invention: the surface layer is an aluminum sheet.
As a preferred embodiment of the composite bulletproof material of the present invention: the surface layer is 1.5-2 mm thick and is laid in a scaly nail structure.
As a preferred embodiment of the composite bulletproof material of the present invention: the middle layer is Kevlar fabric.
As a preferred embodiment of the composite bulletproof material of the present invention: the linear density of the fibers of the fabric is 93TEX, the density is 10.5 multiplied by 10.5 roots/cm, and the gram weight of the fabric is 201g/m2。
As a preferred embodiment of the composite bulletproof material of the present invention: the bottom layer is an STF impregnated Kevlar fabric.
As a preferred embodiment of the composite bulletproof material of the present invention: the STF is prepared by dispersing nano silicon dioxide in polyethylene glycol, wherein the mass fraction of the silicon dioxide is 30%, the thickened viscosity is 1000Pa.s, and the increase of the STF is 20-50%.
As another aspect of the present invention, the present invention overcomes the disadvantages of the prior art and provides a method for preparing the composite bulletproof material.
In order to solve the technical problems, the invention provides the following technical scheme: the preparation method of the composite bulletproof material comprises the following steps,
laying the STF/Kevlar fabric composite fabric in a laminated manner to serve as a bottom layer of the composite structure;
laying a pure Kevlar fabric as a middle layer on the bottom layer, and layering the fiber in the fabric according to the angle requirement; wherein the thickness ratio of the middle layer to the bottom layer material is 2: 1;
laying round aluminum sheet squama as a surface layer in a superposed manner, and sewing and fixing by adopting yarns;
and (3) preparing an aluminum sheet/Kevlar fabric/STF impregnated Kevlar fabric composite bulletproof structure, putting the bulletproof structure into an impermeable fabric bag, and sealing and packaging.
As a preferred embodiment of the preparation method of the composite bulletproof material of the present invention: also comprises the following steps of (1) preparing,
preparation of STF: gradually adding nano silicon dioxide into polyethylene glycol in a mechanical dispersion mode, simultaneously oscillating by ultrasonic waves to fully disperse, and vacuumizing to remove bubbles when the mass fraction of the silicon dioxide reaches 30%; diluting STF by ethanol at a dilution ratio of 1: 1, soaking the fabric into ethanol diluent of STF, removing redundant solution by adopting a rolling mode, taking out and drying the fabric, and removing ethanol to prepare the composite fabric for later use.
The invention has the beneficial effects that: the soft and hard combined composite bulletproof material has good impact resistance, strong anti-bullet shearing energy and high-performance fiber fabric layer as the middle layer, has the characteristics of high strength and high toughness, has high tensile strength and slippage performance under high-speed bullet, the high-performance fiber fabric composite material is impregnated by the shear thickening liquid as the bottom layer, the shear thickening liquid can be sheared and thickened in the impact process and is converted from a liquid state to a solid state, the slippage of fibers is greatly limited, the friction performance of yarns is increased, and more energy is absorbed. The composite bulletproof material of the invention can absorb energy up to 94.85J under the condition that the bullet speed is 500 m/s. The composite panel has the advantages that the surface layer, the middle layer and the bottom layer are combined, compared with the existing structure, the composite panel has obvious advantages, the composite panel has high shear resistance, meanwhile, the flexibility of the composite material is kept, and the composite panel has good bending performance.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise. Wherein:
fig. 1 is a schematic structural view of a composite ballistic material prepared in accordance with the present invention, wherein: 1 is hard armor plate, 2 is pure Kevlar fabric surface layer, and 3 is STF/Kevlar fabric.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with examples are described in detail below.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
Furthermore, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
Example 1:
the invention relates to an aluminum sheet/Kevlar fabric/STF impregnated Kevlar fabricThe composite bulletproof material has surface layer of aluminum sheet of 1.5mm thickness and laid in a armor structure, middle layer of fabric of 4 layers of Kevlar fabric, linear fiber density of 93TEX, density of 10.5X 10.5 pieces/cm, and gram weight of 201g/m2The bottom layer was 2 layers of STF impregnated Kevlar fabric. The STF (shear thickening liquid) is prepared by dispersing nano silicon dioxide in polyethylene glycol, wherein the mass fraction of the silicon dioxide is 30%, the viscosity after thickening reaches 1000Pa.s, and the increase of the STF is 50%.
The invention relates to a preparation method of an aluminum sheet/Kevlar fabric/STF impregnated Kevlar fabric composite bulletproof material, which comprises the following steps:
preparation of STF: gradually adding nano silicon dioxide into polyethylene glycol in a mechanical dispersion mode, simultaneously oscillating by ultrasonic waves to fully disperse, and vacuumizing to remove bubbles when the mass fraction of the silicon dioxide reaches 30%;
diluting STF by ethanol at a dilution ratio of 1: 1, soaking the fabric into ethanol diluent of STF, removing redundant solution by adopting a rolling mode, taking out and drying the fabric, and removing ethanol to prepare a composite fabric for later use;
laying 2 layers of STF/Kevlar fabric composite fabrics in a laminated manner to serve as a bottom layer of a composite structure;
laying 4 layers of pure Kevlar fabric as a middle layer on the bottom layer, and laying the fiber in the fabric according to the angle requirement;
laying round aluminum sheet squama as a surface layer in a superposed manner, and sewing and fixing by adopting yarns;
and (3) preparing an aluminum sheet/Kevlar fabric/STF impregnated Kevlar fabric composite bulletproof structure, putting the bulletproof structure into an impermeable fabric bag, and sealing and packaging.
Fig. 1 is a schematic structural view of a composite ballistic material prepared in accordance with the present invention, wherein: 1 is hard armor plate, 2 is pure Kevlar fabric surface layer, and 3 is STF/Kevlar fabric.
Example 2:
the STF-impregnated 2 layers of Kevlar fabric used as the bottom layer in example 1 were replaced with 2 layers of pure Kevlar fabric, and the top layer was not laid with aluminum sheets, i.e., only 6 layers of pure Kevlar fabric were used to make Kevlar fabric composite bulletproof material, which was put into an impermeable fabric bag for hermetic packaging.
Example 3:
the 4 layers of pure Kevlar fabric used as the middle layer in example 1 were replaced with 4 layers of STF-impregnated Kevlar fabric, and the top layer was not laid with aluminum sheet, i.e., only 6 layers of STF-impregnated Kevlar fabric, STF-impregnated Kevlar fabric composite bulletproof material were used, put into an impermeable fabric bag, and hermetically packaged.
Example 4:
replacing the STF-impregnated 2-layer Kevlar fabric used as the bottom layer in the example 1 with 2-layer pure Kevlar fabric, and adopting the same preparation method as the example 1, namely, using 6-layer pure Kevlar fabric, overlaying and paving round aluminum sheet squama armor as a surface layer, sewing and fixing by adopting yarns, preparing the aluminum sheet/Kevlar fabric composite bulletproof material, putting the aluminum sheet/Kevlar fabric composite bulletproof material into an anti-seepage fabric bag, and sealing and packaging.
Example 5:
the pure Kevlar fabric of 4 layers serving as the middle layer in example 1 was replaced with the STF-impregnated Kevlar fabric of 4 layers, and the other preparation methods were the same as in example 1, that is, 6 layers of STF-impregnated Kevlar fabric were used, and circular aluminum sheet scaleforms were overlaid and laid as the face layer, and sewing and fixing were performed with yarns to prepare an aluminum sheet/STF-impregnated Kevlar fabric composite bulletproof material, which was placed in an impermeable fabric bag and hermetically packaged.
Example 6:
the aluminum sheet/Kevlar fabric/STF impregnated Kevlar fabric composite bulletproof material provided by the invention has the advantages that the surface layer adopts an aluminum sheet, the thickness is 1.5mm, the surface layer is paved by adopting a armor structure, the middle layer fabric is 3 layers of Kevlar fabric, the fiber linear density of the fabric is 93TEX, the density is 10.5 multiplied by 10.5 threads/cm, and the gram weight of the fabric is 201g/m2The bottom layer was 3 layers of STF impregnated Kevlar fabric. The STF (shear thickening liquid) is prepared by dispersing nano silicon dioxide in polyethylene glycol, wherein the mass fraction of the silicon dioxide is 30%, the viscosity after thickening reaches 1000Pa.s, and the increase of the STF is 50%.
The invention relates to a preparation method of an aluminum sheet/Kevlar fabric/STF impregnated Kevlar fabric composite bulletproof material, which comprises the following steps:
preparation of STF: gradually adding nano silicon dioxide into polyethylene glycol in a mechanical dispersion mode, simultaneously oscillating by ultrasonic waves to fully disperse, and vacuumizing to remove bubbles when the mass fraction of the silicon dioxide reaches 30%;
diluting STF by ethanol at a dilution ratio of 1: 1, soaking the fabric into ethanol diluent of STF, removing redundant solution by adopting a rolling mode, taking out and drying the fabric, and removing ethanol to prepare a composite fabric for later use;
laying 3 layers of STF/Kevlar fabric composite fabrics in a laminated manner to serve as a bottom layer of a composite structure;
3 layers of pure Kevlar fabric are laid on the bottom layer to serve as a middle layer, and the direction of fibers in the fabric is laid according to the angle requirement;
laying round aluminum sheet squama as a surface layer in a superposed manner, and sewing and fixing by adopting yarns;
and (3) preparing an aluminum sheet/Kevlar fabric/STF impregnated Kevlar fabric composite bulletproof structure, putting the bulletproof structure into an impermeable fabric bag, and sealing and packaging.
Example 7:
the aluminum sheet/Kevlar fabric/STF impregnated Kevlar fabric composite bulletproof material provided by the invention has the advantages that the surface layer adopts an aluminum sheet, the thickness is 1.5mm, the surface layer is paved by adopting a armor structure, the middle layer fabric is 2 layers of Kevlar fabric, the fiber linear density of the fabric is 93TEX, the density is 10.5 multiplied by 10.5 threads/cm, and the gram weight of the fabric is 201g/m2The bottom layer was 4 layers of STF impregnated Kevlar fabric. The STF (shear thickening liquid) is prepared by dispersing nano silicon dioxide in polyethylene glycol, wherein the mass fraction of the silicon dioxide is 30%, the viscosity after thickening reaches 1000Pa.s, and the increase of the STF is 50%.
The invention relates to a preparation method of an aluminum sheet/Kevlar fabric/STF impregnated Kevlar fabric composite bulletproof material, which comprises the following steps:
preparation of STF: gradually adding nano silicon dioxide into polyethylene glycol in a mechanical dispersion mode, simultaneously oscillating by ultrasonic waves to fully disperse, and vacuumizing to remove bubbles when the mass fraction of the silicon dioxide reaches 30%;
diluting STF by ethanol at a dilution ratio of 1: 1, soaking the fabric into ethanol diluent of STF, removing redundant solution by adopting a rolling mode, taking out and drying the fabric, and removing ethanol to prepare a composite fabric for later use;
laying 4 layers of STF/Kevlar fabric composite fabrics in a laminated manner to serve as a bottom layer of a composite structure;
laying 2 layers of pure Kevlar fabric as a middle layer on the bottom layer, and laying the fiber in the fabric according to the angle requirement;
laying round aluminum sheet squama as a surface layer in a superposed manner, and sewing and fixing by adopting yarns;
and (3) preparing an aluminum sheet/Kevlar fabric/STF impregnated Kevlar fabric composite bulletproof structure, putting the bulletproof structure into an impermeable fabric bag, and sealing and packaging.
Example 8:
the aluminum sheet/Kevlar fabric/STF impregnated Kevlar fabric composite bulletproof material provided by the invention has the advantages that the surface layer adopts an aluminum sheet, the thickness is 1.5mm, the surface layer is paved by adopting a armor structure, the middle layer fabric is 5 layers of Kevlar fabric, the fiber linear density of the fabric is 93TEX, the density is 10.5 multiplied by 10.5 threads/cm, and the gram weight of the fabric is 201g/m2The bottom layer was 1 STF impregnated Kevlar fabric. The STF (shear thickening liquid) is prepared by dispersing nano silicon dioxide in polyethylene glycol, wherein the mass fraction of the silicon dioxide is 30%, the viscosity after thickening reaches 1000Pa.s, and the increase of the STF is 50%.
The invention relates to a preparation method of an aluminum sheet/Kevlar fabric/STF impregnated Kevlar fabric composite bulletproof material, which comprises the following steps:
preparation of STF: gradually adding nano silicon dioxide into polyethylene glycol in a mechanical dispersion mode, simultaneously oscillating by ultrasonic waves to fully disperse, and vacuumizing to remove bubbles when the mass fraction of the silicon dioxide reaches 30%;
diluting STF by ethanol at a dilution ratio of 1: 1, soaking the fabric into ethanol diluent of STF, removing redundant solution by adopting a rolling mode, taking out and drying the fabric, and removing ethanol to prepare a composite fabric for later use;
1 layer of STF/Kevlar fabric composite fabric is laid in a laminated manner to be used as a bottom layer of a composite structure;
laying 5 layers of pure Kevlar fabric as a middle layer on the bottom layer, and laying the fiber in the fabric according to the angle requirement;
laying round aluminum sheet squama as a surface layer in a superposed manner, and sewing and fixing by adopting yarns;
and (3) preparing an aluminum sheet/Kevlar fabric/STF impregnated Kevlar fabric composite bulletproof structure, putting the bulletproof structure into an impermeable fabric bag, and sealing and packaging.
Example 9:
the aluminum sheet/Kevlar fabric/STF impregnated Kevlar fabric composite bulletproof material provided by the invention has the advantages that the surface layer adopts an aluminum sheet, the thickness is 1.5mm, the surface layer is paved by adopting a armor structure, the middle layer fabric is 1 layer of Kevlar fabric, the fiber linear density of the fabric is 93TEX, the density is 10.5 multiplied by 10.5 threads/cm, and the gram weight of the fabric is 201g/m2The bottom layer was 5 layers of STF impregnated Kevlar fabric. The STF (shear thickening liquid) is prepared by dispersing nano silicon dioxide in polyethylene glycol, wherein the mass fraction of the silicon dioxide is 30%, the viscosity after thickening reaches 1000Pa.s, and the increase of the STF is 50%.
The invention relates to a preparation method of an aluminum sheet/Kevlar fabric/STF impregnated Kevlar fabric composite bulletproof material, which comprises the following steps:
preparation of STF: gradually adding nano silicon dioxide into polyethylene glycol in a mechanical dispersion mode, simultaneously oscillating by ultrasonic waves to fully disperse, and vacuumizing to remove bubbles when the mass fraction of the silicon dioxide reaches 30%;
diluting STF by ethanol at a dilution ratio of 1: 1, soaking the fabric into ethanol diluent of STF, removing redundant solution by adopting a rolling mode, taking out and drying the fabric, and removing ethanol to prepare a composite fabric for later use;
laying 5 layers of STF/Kevlar fabric composite fabrics in a laminated manner to serve as a bottom layer of a composite structure;
1 layer of pure Kevlar fabric is laid on the bottom layer to serve as a middle layer, and the direction of fibers in the fabric is laid according to the angle requirement;
laying round aluminum sheet squama as a surface layer in a superposed manner, and sewing and fixing by adopting yarns;
and (3) preparing an aluminum sheet/Kevlar fabric/STF impregnated Kevlar fabric composite bulletproof structure, putting the bulletproof structure into an impermeable fabric bag, and sealing and packaging.
Example 10:
the aluminum sheet/STF impregnated Kevlar fabric/Kevlar fabric composite bulletproof material has a surface layer made of aluminum sheets with the thickness of 1.5mm and laid by adopting a armor structure, a bottom layer made of 4 layers of Kevlar fabric, the fiber linear density of the fabric being 93TEX and the density being 10.5 multiplied by 10.5 threads/cm, and the gram weight of the fabric being 201g/m2The middle layer was 2 layers of STF impregnated Kevlar fabric. The STF (shear thickening liquid) is prepared by dispersing nano silicon dioxide in polyethylene glycol, wherein the mass fraction of the silicon dioxide is 30%, the viscosity after thickening reaches 1000Pa.s, and the increase of the STF is 50%.
The invention relates to a preparation method of an aluminum sheet/STF impregnated Kevlar fabric/Kevlar fabric composite bulletproof material, which comprises the following steps:
preparation of STF: gradually adding nano silicon dioxide into polyethylene glycol in a mechanical dispersion mode, simultaneously oscillating by ultrasonic waves to fully disperse, and vacuumizing to remove bubbles when the mass fraction of the silicon dioxide reaches 30%;
diluting STF by ethanol at a dilution ratio of 1: 1, soaking the fabric into ethanol diluent of STF, removing redundant solution by adopting a rolling mode, taking out and drying the fabric, and removing ethanol to prepare a composite fabric for later use;
2 layers of STF/Kevlar fabric composite fabrics are laminated and paved to be used as an intermediate layer of the composite structure;
laying 4 layers of pure Kevlar fabric as a bottom layer;
laying round aluminum sheet squama as a surface layer in a superposed manner, and sewing and fixing by adopting yarns;
and (3) preparing an aluminum sheet/STF (woven fabric) impregnated Kevlar/Kevlar composite bulletproof structure, putting the structure into an anti-seepage fabric bag, and sealing and packaging.
Example 11:
the ballistic fabric produced was subjected to ballistic performance tests with a bullet velocity of 500m/s and the results are given in the following table:
| fabric structure | Energy absorption |
| Example 1 | 94.85J |
| Example 2 | 60.5J |
| Example 3 | 40.6J |
| Example 4 | 80.55J |
| Example 5 | 67.6J |
| Example 6 | 83.7J |
| Example 7 | 72.3J |
| Example 8 | 81.2J |
| Example 9 | 70.5J |
| Example 10 | 73.8J |
The soft and hard combined composite bulletproof material has good impact resistance and strong anti-bullet shearing capability, the middle layer is a flexible high-performance fiber fabric layer, the high-strength and high-toughness characteristics are realized, the tensile strength and the sliding performance are high under high-speed bullet, the high-performance fiber fabric composite material is impregnated by the shear thickening liquid at the bottom layer, the shear thickening liquid can be subjected to shear thickening in the impact process and is converted from a liquid state to a solid state, the slippage of fibers is greatly limited, the friction performance of yarns is increased, and more energy is absorbed. The composite bulletproof material of the invention can absorb energy up to 94.85J under the condition that the bullet speed is 500 m/s. The composite panel has the advantages that the surface layer, the middle layer and the bottom layer are combined, compared with the existing structure, the composite panel has obvious advantages, the composite panel has high shear resistance, meanwhile, the flexibility of the composite material is kept, and the composite panel has good bending performance.
It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (5)
1. A composite ballistic resistant material characterized by: the composite material comprises a surface layer, a middle layer and a bottom layer, wherein the surface layer comprises a light metal armor plate or a ceramic matrix composite hard armor plate, the middle layer is a Kevlar fabric, and the bottom layer is an STF (super twisted fabric) impregnated Kevlar fabric;
the thickness ratio of the middle layer to the bottom layer is 2: 1;
the linear density of the fibers of the middle layer fabric is 93TEX, the density is 10.5 multiplied by 10.5 roots/cm, and the gram weight of the fabric is 201g/m2；
The STF is prepared by dispersing nano silicon dioxide in polyethylene glycol, wherein the mass fraction of the silicon dioxide is 30%, the thickened viscosity is 1000Pa.s, and the increase of the STF is 20-50%.
2. The composite ballistic resistant material of claim 1 wherein: the surface layer is an aluminum sheet.
3. The composite ballistic resistant material of claim 2 wherein: the surface layer is 1.5 mm-2 mm in thickness and is laid by a squama manicure structure.
4. A process for the preparation of the composite ballistic material of claim 1 characterized in that: the method comprises the steps of laying the STF/Kevlar fabric composite fabric in a laminated manner to serve as a bottom layer of a composite structure;
laying a pure Kevlar fabric as a middle layer on the bottom layer, and layering the fiber in the fabric according to the angle requirement; wherein the thickness ratio of the middle layer to the bottom layer material is 2: 1;
laying round aluminum sheet squama as a surface layer in a superposed manner, and sewing and fixing by adopting yarns;
and (3) preparing an aluminum sheet/Kevlar fabric/STF impregnated Kevlar fabric composite bulletproof structure, putting the bulletproof structure into an impermeable fabric bag, and sealing and packaging.
5. A process for the preparation of a composite ballistic resistant material according to claim 4 characterized in that: also comprises the following steps of (1) preparing,
preparation of STF: gradually adding nano silicon dioxide into polyethylene glycol in a mechanical dispersion mode, simultaneously oscillating by ultrasonic waves to fully disperse, and vacuumizing to remove bubbles when the mass fraction of the silicon dioxide reaches 30%; diluting STF by ethanol at a dilution ratio of 1: 1, soaking the fabric into ethanol diluent of STF, removing redundant solution by adopting a rolling mode, taking out and drying the fabric, and removing ethanol to prepare the composite fabric for later use.
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| CN111910436B (en) * | 2020-07-16 | 2021-11-12 | 北京理工大学 | Shear thickening protective liquid and application thereof |
| CN112659583B (en) * | 2020-12-17 | 2023-03-24 | 江苏集萃复合材料装备研究所有限公司 | Novel bulletproof structure and manufacturing process |
| CN113122959B (en) * | 2021-04-09 | 2021-12-10 | 天津工业大学 | Bulletproof composite fiber material and preparation method thereof |
| CN113883964B (en) * | 2021-09-26 | 2022-07-01 | 军事科学院系统工程研究院军需工程技术研究所 | Scale composite armor body |
| CN114228283A (en) * | 2021-12-02 | 2022-03-25 | 南京航空航天大学 | Multi-level flexible protection structure imitating Chinese sturgeon back bone scales and fish skin |
| CN114318858B (en) * | 2022-01-13 | 2023-02-28 | 西安交通大学 | Preparation method of silicon dioxide/ultrahigh molecular weight polyethylene laid fabric |
| CN114750487B (en) * | 2022-05-25 | 2023-05-02 | 江南大学 | Radiation-proof multi-gradient antiknock composite material and preparation method thereof |
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| AU2488499A (en) * | 1998-02-02 | 1999-08-16 | E.I. Du Pont De Nemours And Company | Stab and bullet protection material |
| CN101140151A (en) * | 2007-09-20 | 2008-03-12 | 高轶夫 | Bulletproof stabbed prevention dress with liquid stage material |
| CN101871748A (en) * | 2010-04-20 | 2010-10-27 | 深圳航天科技创新研究院 | Soft stab-proof/bulletproof material |
| CN104807377A (en) * | 2015-04-17 | 2015-07-29 | 广州卫富科技开发有限公司 | Individual protecting component |
| CN206648524U (en) * | 2017-01-16 | 2017-11-17 | 江苏安卡新材料科技有限公司 | A kind of bulletproof composite stab-resistant material |
| CN107212485A (en) * | 2017-05-09 | 2017-09-29 | 东华大学 | A kind of flexible puncture-proof fabric |
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