TWM655618U - Composite armor plate - Google Patents

Abstract

A composite armor plate is used to solve the problem that the conventional armor plate has poor bulletproof performance and cannot be repaired. The composite armor plate of this invention comprises: a fiber layer; a rubber layer; and a ceramic layer, which is formed by splicing a plurality of ceramic plate units and the rubber layer is bonded to the fiber layer; wherein the gas content in the rubber layer is less than 0.1%.

Description

Composite armor plate

This work is about a bulletproof device, especially a composite armor plate.

It is known that the composite armor plate used for bulletproof is a bulletproof fiber plate joined to a bulletproof ceramic plate. When in use, the bulletproof ceramic plate is used as a panel, and the high hardness and high compressive strength of the ceramic material are used to resist bullets; even if the bullet penetrates the bulletproof ceramic plate, the bullet can still be wrapped around the bullet by the bulletproof fiber plate with good toughness and ductility to slow down the bullet rotation speed.

However, the known composite armor plate, because its bulletproof ceramic plate is in the form of a whole piece, will immediately break after being shot by the first bullet, and the stress that causes the bulletproof ceramic plate to break will extend greatly, and the gaps between the cracks will cause the bulletproof performance of the entire bulletproof ceramic plate to drop significantly. Therefore, the known composite armor plate is difficult to withstand continuous shooting of multiple bullets.

Furthermore, even if the bulletproof ceramic plate of the known composite armor plate is only partially damaged in a small area, the one-piece bulletproof ceramic plate cannot be repaired, and the entire known composite armor plate needs to be replaced, resulting in a very high burden on defense costs and waste of resources.

In view of the shortcomings of the above-mentioned known technology, the new people feel that it is not perfect, so they have exhausted their minds to carefully study and overcome it, and have successfully developed a composite armor plate. Through the spliced ceramic layer, the composite armor plate is given the function of replacing the local damaged parts, and it is ensured that the splicing of the ceramic layer has good strength and will not form a weakness in defense; and the spliced ceramic layer can suppress the transmission of stress, effectively reduce the fragmentation area of the ceramic layer after being shot, and maintain good bulletproof performance to withstand the continuous shooting of multiple bullets, and give the composite armor plate The function of replacing the local damaged parts.

The directions or similar terms described in the entire text of this work, such as "front", "back", "left", "right", "upper (top)", "lower (bottom)", "inside", "outside", "side", etc., are mainly for reference to the directions of the attached drawings. Each direction or similar terms are only used to assist in the description and understanding of the various embodiments of this work, and are not used to limit this work.

The quantifiers "one" or "a" used in the components and parts described in this work are only for the convenience of use and to provide the general meaning of the scope of this work; in this work, they should be interpreted as including one or at least one, and the concept of a single number also includes the plural case, unless it is obvious that it means otherwise.

The similar terms such as "combination", "assembly" or "assembly" mentioned in the full text of this work mainly include the connection that can be separated without destroying the components, or the connection that makes the components inseparable, which can be selected by those with general knowledge in this field according to the materials of the components to be connected or the assembly requirements.

To achieve the above and other purposes, the present invention provides a composite armor plate, which includes: a fiber layer; a rubber layer; and a ceramic layer, which is formed by splicing a plurality of ceramic plate units and is bonded to the fiber layer by the rubber layer; wherein the gas content in the rubber layer is less than 0.1%.

This invention also provides a method for manufacturing a composite armor plate, which includes the following steps: forming a rubber layer on a fiber layer; placing a plurality of ceramic plate units on the rubber layer and splicing them into a ceramic layer to obtain a semi-finished product; and subjecting the semi-finished product to a vacuum vulcanization treatment at a temperature of 70-100°C and a pressure of 8-12MPa for 7-15 hours.

This invention also provides a method for repairing a composite armor plate, which includes the following steps: removing the broken ceramic plate unit on the ceramic layer to form at least one groove in the colloid layer; filling the groove with colloid and a replacement ceramic plate unit, so that the replacement ceramic plate unit and other ceramic plate units together form a repaired ceramic layer, and obtain a half-repaired product; and subjecting the half-repaired product to a vacuum vulcanization treatment at a temperature of 70-100°C and a pressure of 8-12MPa for 7-15 hours.

In the above-mentioned composite armor plate, the joint gap between adjacent ceramic plate units can be 0.005~0.02mm, and a part of the glue layer can be included in the joint gap.

The above-mentioned composite armor plate may further include a crack-stop layer, which is coated on the outside of the ceramic layer plate.

In the above-mentioned composite armor plate, the outer layer of the ceramic plate unit can be coated with a high-performance fiber layer.

In the above-mentioned manufacturing method of the composite armor plate, before the semi-finished product is subjected to vacuum vulcanization, the semi-finished product can be first cold-pressed to form the adhesive layer so that the adhesive layer is initially cured.

In the above-mentioned manufacturing method of the composite armor plate, after the semi-finished product is subjected to vacuum vulcanization treatment, a crack arrest layer can be coated on the outside of the ceramic layer plate.

In the above-mentioned composite armor plate repair method, the composite armor plate may have a crack-stop layer coated on the outside of the ceramic plate. Before removing the broken ceramic plate unit, the crack-stop layer may be cut and removed locally at the shot location to expose the broken ceramic plate unit on the ceramic plate.

In the above-mentioned composite armor plate repair method, after the semi-repaired product is vacuum vulcanized, a new crack-stop layer can be coated on the repaired ceramic plate and the original crack-stop layer that is partially cut.

Accordingly, the composite armor plate and its manufacturing method of the invention can ensure that the joints of the ceramic plates also have good compressive strength through the glue layer with zero gas content (or close to zero gas content), without forming a weakness in defense, and has the effect of greatly improving the bulletproof performance of the entire ceramic plate. In addition, the spliced ceramic plates can effectively reduce the total fragmentation area of the ceramic plates after being shot, making the composite armor plate suitable for resisting continuous shooting of multiple bullets. In addition, the spliced ceramic layers can also give the composite armor plate the function of replacing local damaged parts. Therefore, the composite armor plate repair method of this invention can use most of the components of the damaged composite armor plate and repair the damaged composite armor plate into an armor plate repair product, thereby reducing defense costs and reducing resource waste.

1: Fiber laminate

2: Adhesive layer

2’: Update the adhesive layer

21: Groove

3: Ceramic laminate

3’: Repair ceramic laminates

31: Ceramic plate unit

31’: Replace the ceramic plate unit

32: High-performance fiber layer

4: Crack arrest layer

4’: New crack arrest layer

G: Seam gap

S: Semi-finished product

S’: Semi-repaired product

S11: Gluing step

S12: Splicing step

S13: Vacuum vulcanization step

S14: Coating step

S21: Removal step

S22: Replacement step

S23: Vacuum vulcanization step

S24: Coating step

[Figure 1] is a flow chart of this creative manufacturing method.

[Figure 2] is a schematic diagram of the semi-finished cross-section structure of this creation.

[Figure 3] is a schematic diagram of the planar structure of the composite armor plate of this creation.

[Figure 4] is a schematic diagram of the coating step in this creative manufacturing method.

[Figure 5] is a flow chart of this creative restoration method.

[Figure 6] is a schematic diagram of the restoration method of this work.

[Figure 7] is a schematic diagram of the wrapping step in this creative restoration method.

[Figure 8] is a schematic diagram of the planar structure of the ceramic plate unit of an embodiment of the composite armor plate of the present invention.

In order to fully understand the purpose, features and effects of this creation, this creation is described in detail through the following specific implementation examples and the attached diagrams. The description is as follows:

Please refer to Figures 1 and 2. This invention provides a method for manufacturing a composite armor plate. In a preferred embodiment, it includes the following steps: a gluing step S11: forming a glue layer 2 on a fiber layer 1; a splicing step S12: placing a plurality of ceramic plate units 31 on the glue layer 2 and splicing them into a ceramic layer 3 to obtain a semi-finished product S; and a vacuum vulcanization step S13: subjecting the semi-finished product S (the fiber layer 1 with the glue layer 2 and the ceramic layer 3) to a vacuum vulcanization treatment at a temperature of 70-100°C and a pressure of 8-12MPa for 7-15 hours.

In more detail, the material of the fiber layer 1 can be at least one of high-performance fibers such as carbon fiber, aramid fiber, PBO fiber (abbreviation for poly(1,4-phenylene-cis-benzobisoxazole) fiber), basalt fiber or ultra high molecular weight polyethylene fiber (UHMWPEF). The manufacturing process of the fiber layer 1 may include: drawing to make a non-weaving cloth, also known as a unidirectional cloth or UD cloth (Uni-Directional Cloth); stacking and compounding several non-weaving cloth layers, and the yarn directions of two adjacent non-weaving cloths are preferably non-parallel to enhance the strength of the product in various directions; vulcanizing the several compounded non-weaving cloths for 3 to 5 minutes to obtain the fiber layer 1.

In the gluing step S11, the method of forming the glue layer 2 on the fiber layer 1 can be, for example but not limited to, applying a liquid glue to the fiber layer 1 by coating or spraying. In the splicing step S12, the plurality of ceramic plate units 31 can be placed on the glue layer 2 one by one, or first spliced into the ceramic layer 3 on a jig, and then transferred to the glue layer 2 at once, and this invention does not limit this.

It is worth noting that in the splicing step S12, the uncured colloid will infiltrate the splicing gap G between the adjacent ceramic plate units 31 (as shown in the enlarged view of area A in FIG2 ). Specifically, the splicing gap G between the adjacent ceramic plate units 31 can be 0.005-0.02 mm, preferably about 0.01 mm, so that the colloid can more easily and evenly infiltrate the splicing gap G.

In the splicing step S12, each ceramic plate unit 31 can be pressed into a flat plate or a plate with a predetermined curvature through a mold, and then the expected outer edge contour can be cut by laser. After the burrs are trimmed, it is bonded to the fiber layer 1 through the adhesive layer 2. In addition, before the vacuum vulcanization step S13, it is preferred to first cold-press the semi-finished product S at a pressure of, for example, 10 bar, so that the colloid of the adhesive layer 2 is initially solidified, so that the semi-finished product S can be fed into the vacuum vulcanizer.

In the vacuum vulcanization step S13, since the colloid of the rubber layer 2 will melt due to heat, the rubber layer 2 can discharge the gas (such as air) trapped inside at the aforementioned temperature, pressure and operation time. Then, as long as the rubber layer 2 is cooled and solidified, a composite armor plate can be produced (as shown in Figure 3, but the present invention does not limit the appearance of the composite armor plate to the form shown in Figure 3), and the gas content in the rubber layer 2 of the composite armor plate is less than 0.1%, or even zero gas content. In addition, after the vacuum vulcanization step S13, the joint gap G between adjacent ceramic plate units 31 can also become tighter, which helps to improve the bulletproof performance of the overall ceramic layer plate 3.

Please refer to FIG. 1 and FIG. 4. In addition to the above-mentioned embodiments, in one embodiment of the present invention, the manufacturing method of the composite armor plate may further include a coating step S14: after the semi-finished product S is subjected to vacuum vulcanization treatment (after the vacuum vulcanization step S13), a crack-stop layer 4 may be coated on the outside of the ceramic layer 3. The material of the crack-stop layer 4 may also be at least one of the high-performance fibers mentioned above, and after the vacuum vulcanization step S13 is completed, before or after the adhesive layer 2 is cooled and solidified, the crack-stop layer 4 may be bonded to at least cover the surface of the ceramic layer 3. In this way, in addition to improving the bulletproof performance of the overall composite armor plate by the material properties of the crack-stop layer 4, the crack-stop layer 4 can also assist the plurality of ceramic plate units 31 in maintaining their positions, so as to further enhance the structural strength of the ceramic layer 3. In addition, in addition to the aforementioned covering type, in other embodiments, the crack-stop layer 4 can also completely cover the product after vacuum vulcanization treatment, or only not cover part of the back side of the fiber layer 1, or make the back side of the fiber layer 1 completely exposed, etc., and the present invention is not limited to this.

In summary, the composite armor plate produced by the manufacturing method of the composite armor plate of the present invention can ensure that the joints of the ceramic layer 3 also have good compressive strength through the adhesive layer 2 with zero gas content (or close to zero gas content) without forming weaknesses in defense, which has the effect of greatly improving the bulletproof performance of the entire ceramic layer 3. In addition, the spliced ceramic layer plate 3 can significantly reduce the stress transmitted from the impact point to the surroundings when it is transmitted to the edge of the ceramic plate unit 31 that is shot. In addition, the portion of the adhesive layer 2 located in the splicing gap G (marked in Figure 2) can assist in suppressing the transmission of stress, so that only the ceramic plate unit 31 that is shot will be broken, or at most the ceramic plate unit 31 adjacent to the ceramic plate unit 31 that is shot will be affected, so the total broken area of the ceramic layer plate 3 after being shot can be effectively reduced. Therefore, even after being shot, the composite armor plate can still maintain good bulletproof performance to withstand continuous shooting of multiple bullets.

To verify the above effects, the newcomer has sent a composite armor plate made by the present invention and having the fiber layer 1, the rubber layer 2, the ceramic layer 3 and the crack arrest layer 4 for testing according to the NIJ IV level standard (NIJ-STD-0101.04 IV level), and obtained a qualified result that none of the three bullets penetrated. In addition, the same test was conducted on a composite armor plate that was different only in that it was not vacuum-cured in the vacuum-curing step S13, and obtained an unqualified result that one of the three bullets penetrated. This proves the importance of the vacuum-curing treatment in the vacuum-curing step S13, and it does help to improve the bulletproof performance of the composite armor plate.

On the other hand, please refer to FIG. 5 and FIG. 6 , the aforementioned spliced ceramic layer plate 3 can also give the composite armor plate the function of being able to replace the local damaged parts. Specifically, the invention provides a method for repairing a composite armor plate, which in a preferred embodiment includes the following steps: a removal step S21: removing the broken ceramic plate unit 31 on the ceramic layer 3, so that the adhesive layer 2 forms at least one groove 21; a replacement step S22: filling the groove 21 with a colloid and a replacement ceramic plate unit 31', so that the replacement ceramic plate unit 31' can form a repaired ceramic layer 3' together with other ceramic plate units 31, and obtain a half-repaired product S'; and a vacuum vulcanization step S23: subjecting the half-repaired product S' to a vacuum vulcanization treatment at a temperature of 70-100°C and a pressure of 8-12MPa for 7-15 hours.

Please refer to Figures 6 and 7. During the vacuum vulcanization treatment of the semi-repaired product S', the original rubber layer 2 will be heated and melted, and can be fused with the rubber filled in the groove 21, and the excess rubber will flow away, so a renewed rubber layer 2' can be formed on the fiber layer 1. Moreover, under the aforementioned temperature, pressure and operation time, the renewed rubber layer 2' can discharge the gas trapped inside, and then the renewed rubber layer 2' can be cooled and solidified to obtain an armor plate repair product, and the gas content in the renewed rubber layer 2' of the armor plate repair product is less than 0.1%, or even zero gas content.

Accordingly, when the damaged area of the ceramic layer 3 of the composite armor plate is not large, the aforementioned composite armor plate repair method can be used to repair the damaged composite armor plate into an armor plate repair product, and the armor plate repair product can have equivalent bulletproof performance to the undamaged composite armor plate, so most of the components of the damaged composite armor plate can still be used. Compared with replacing the entire composite armor plate, the cost of repair can be relatively much lower, thereby effectively reducing defense costs and reducing resource waste.

It is worth mentioning that, referring to Figures 5 and 7, if the damaged composite armor plate has the crack-stop layer 4, then in the removal step S21, the crack-stop layer 4 can be cut and removed locally at the shot location to expose the broken ceramic plate unit 31 on the ceramic layer 3 so as to remove the broken ceramic plate unit 31. In addition, the repair method of the composite armor plate can also include a coating step S24: after vacuum vulcanization treatment of the semi-repaired product S' (after the vacuum vulcanization step S23), a new crack-stop layer 4' can be coated on the repaired ceramic layer 3' and the original crack-stop layer 4. The coating type of the new crack-stop layer 4' is also not limited to that shown in the figure.

Please refer to Figure 8. In addition to the above-mentioned embodiments, in one embodiment of the present invention, the outer layer of each ceramic plate unit 31 can also be coated with a high-performance fiber layer 32. In this way, in addition to improving the bulletproof performance of the entire ceramic layer 3 by the material properties of the high-performance fiber layer 32, since the high-performance fiber layer 32 and the fiber layer 1 are made of the same material, it is easier to be stably connected to the fiber layer 1.

It is worth noting that Figures 2, 3, 4, 6, 7 and 8 of this work are schematic diagrams, and the shapes or size ratios between the fiber layer 1, rubber layer 2, ceramic layer 3 and crack arrest layer 4 are not necessarily consistent with the actual product, so this does not limit this work.

This creation has been disclosed in the above text with a preferred embodiment, but those familiar with this technology should understand that the embodiment is only used to describe this creation and should not be interpreted as limiting the scope of this creation. It should be noted that all changes and substitutions equivalent to the embodiment should be included in the scope of this creation. Therefore, the scope of protection of this creation should be based on the scope defined by the patent application, and the scope of the attached claims should be interpreted in the broadest sense to include all modifications, similar arrangements and processes, etc.

1: Fiber laminate

2: Adhesive layer

3: Ceramic laminate

31: Ceramic plate unit

G: Seam gap

S: Semi-finished product

Claims (4)

A composite armor plate, comprising: a fiber layer; a rubber layer; and a ceramic layer, which is formed by splicing a plurality of ceramic plate units, and the rubber layer is bonded to the fiber layer; wherein the gas content in the rubber layer is less than 0.1%. The composite armor plate as described in claim 1, wherein the joint gap between adjacent ceramic plate units is 0.005-0.02 mm, and a portion of the adhesive layer is contained in the joint gap. The composite armor plate as described in claim 1 further comprises a crack arresting layer, which is coated on the outside of the ceramic layer. A composite armor plate as described in claim 1, wherein the outer layer of the ceramic plate unit is coated with a high-performance fiber layer.

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