Bulletproof roof panel and manufacturing method

Abstract

The present invention relates to a bulletproof roof panel and its manufacturing method, which can effectively prevent artillery shells from penetrating and directly exploding on the roofs of sentry posts and barracks. The bulletproof panel is formed by coating and curing one or more layers of aramid III woven fabric with a high-strength, high-toughness, and high-hardness water-based resin powder. The high-hardness, high-toughness, and high-elasticity plate is laminated to one side of the panel. Advantages: The design of the bulletproof roof panel transforms the explosion of artillery shells penetrating the roof into a rebound explosion, thereby preventing devastating damage to sentry posts and barracks. Furthermore, the design of the bulletproof plate within the bulletproof roof panel prevents shrapnel from entering the room if the high-hardness, high-toughness, and high-elasticity plate is damaged.

Description

Technical Field

[0001] The present invention relates to a bulletproof roof plate and a manufacturing method thereof, which can effectively prevent artillery shells from penetrating a sentry post or a barracks roof and exploding directly. The bulletproof roof plate is mainly used for roofs of military border sentry posts, barracks and military material storage buildings, and belongs to the field of bulletproof roof plate manufacturing. Background Art

[0002] During visits to my country's western and northern border regions, the inventors discovered that the roofs of outposts, barracks, and military supply warehouses were all ordinary structures without bulletproofing. The problem was that in the event of war, a single shell landing on the roof would cause a blast through the interior, triggering a series of explosions involving people and ammunition, completely destroying everything inside. Summary of the Invention

[0003] Design purpose: To avoid the shortcomings of the background technology, a bulletproof roof panel and its manufacturing method are designed that can effectively prevent artillery shells from penetrating the roofs of outposts and barracks and exploding directly.

[0004] Design scheme: To achieve the above design objectives. The present invention has the following structural design features: 1. One or more layers of aramid III woven fabric in the bulletproof roof are solidified with high-strength, high-toughness, high-hardness water-based resin powder to form a bulletproof template, which is one of the technical features of the present invention. The purpose of this design is: (1) Aramid III is a ternary copolymer para-aromatic polyamide fiber with a heterocyclic structure. It is made by the co-condensation of three monomers, namely, paraphenylenediamine, terephthaloyl chloride, and diamine containing a heterocyclic structure. Therefore, it is called aramid III, also known as heterocyclic aramid. The heterocyclic structure of aramid III gives it ultra-high strength (domestic) tensile strength of 5.0GPa to 5.5GPa and ultra-high modulus (domestic elastic modulus of 130GPa to 160GPa), and it has excellent performance in high temperature resistance, impact resistance, wear resistance, wave transmission, etc., and is also more conducive to the composite of fiber and resin, so the comprehensive anti-ballistic performance is better. In addition, aramid III overcomes the shortcomings of aramid II and PBO fibers, such as poor UV resistance. It can be said that aramid III is the best organic fiber with the best comprehensive performance in mass production in the world today. (2) The ultra-high tensile strength of aramid III is the fundamental reason for its excellent ballistic performance. The higher the breaking strength of the bulletproof fiber, the greater the fiber's breaking energy absorption rate, and the better the fiber's ballistic performance. The breaking elongation of domestic aramid III (Staramid F-358) fiber is less than 3.5%, and the tensile strength reaches 5.0GPa to 5.5GPa. Secondly, the density of aramid III is only 1.43g / cm3 to 1.45g / cm3, which is a truly lightweight and high-strength material. (3) Aramid III not only has good heat resistance, but also can maintain good mechanical properties at 200℃. It will not decompose until the temperature reaches 538℃ in a nitrogen environment or 520℃ in an air environment. It has very good thermal stability. The change in tensile strength of Aramid III after being placed at 220℃ for 800 hours. The results show that the fiber strength retention rate of Aramid III after being placed in air at 240℃ for 3 hours under high temperature conditions is 92%. More importantly, after being placed at -40℃ for 4 hours, the breaking strength of Aramid III is almost unchanged compared with that at room temperature. (4) Aramid III is irradiated with 340nm ultraviolet light without water spray for 360 hours (UV aging test standard: GB / T16585-1996). The results show that the tensile strength of Aramid III only decreases by 7%. For bulletproof chips, if they are sealed in a vacuum black, light-proof, water-proof, high-strength waterproof cloth cover, the impact of light on the bulletproof chip is greatly reduced. (5) Aramid III has excellent flame retardant properties, with a limiting oxygen index of up to 42, and it will not burn when away from the flame. In addition, Aramid III has good moisture resistance and can be used for a long time without changing its properties.Because the excellent overall performance of aramid III material is not only reflected in its superior ballistic resistance, but also in its exceptional lightweighting properties—aramid III ballistic materials possess excellent properties such as high strength, high toughness, and impact resistance—the present invention organically combines woven fabric made from aramid III filaments with a high-strength, high-toughness, and high-hardness water-based resin powder to produce a bulletproof roof panel with excellent ballistic protection. Second, the design of one or more layers of ultra-high molecular weight polyethylene (UHMWPE) woven fabric in the bulletproof roof panel is coated and cured with a high-strength, high-toughness, and high-hardness water-based resin powder to form a bulletproof template is the second technical feature of the present invention. This design is intended to ensure that the bulletproof template is designed using ultra-high molecular weight polyethylene (UHMWPE) fiber, a second technical feature of the present invention. This design is intended to ensure that ultra-high molecular weight polyethylene (UHMWPE) fiber, spun from polyethylene with a relative molecular mass between 1 million and 5 million, is the world's strongest and lightest fiber, boasting a strength 15 times greater than steel wire while being very light, 40% lighter than materials such as aramid. The present invention uses this material as a raw material for manufacturing bulletproof roof panels, achieving reliable bulletproof performance while also being lightweight. A third technical feature of the present invention is the design in which one or more layers of carbon fiber woven fabric or mesh in the bulletproof roof panel are cured with a high-strength, high-toughness, and high-hardness water-based resin powder to form the bulletproof roof panel. This design is intended to ensure that carbon fiber composite materials possess strong mechanical properties. Their specific strength and specific modulus are many times higher than those of other functionally similar alloys. This means that, given the same tensile strength and modulus, the weight of carbon fiber products is significantly lower than that of alloy products when the product meets performance requirements. Furthermore, carbon fiber is typically made from polyacrylonitrile (PAN) fibers through oxidation and then carbonization at higher temperatures. When a gun is fired at a carbon fiber panel, the dense mesh of fibers acts like a soccer goal net; regardless of where the projectile strikes the net, its impact is absorbed by the entire net. Therefore, the present invention organically combines carbon fiber woven fabric with high-strength, high-toughness, and high-hardness water-based resin powder to produce a bulletproof roof panel with excellent bulletproof performance. 4. The use of high-hardness, high-toughness, high-elasticity plates is the fifth technical feature of this invention. This design aims to prevent projectiles from penetrating the plates due to their high hardness, toughness, and excellent elasticity. While simultaneously deflecting the instantly exploding projectiles away from the roof, it also prevents direct damage to the roof. Furthermore, the bulletproof plates positioned beneath them protect against shrapnel in the event of damage to the plates, thus protecting personnel within outposts and barracks.

[0005] Technical Solution 1: A bulletproof roof panel, one or more layers of aramid III woven cloth are coated and cured with high-strength, high-toughness, and high-hardness water-based resin powder to form a bulletproof panel, and a high-hardness, high-toughness, and high-elastic panel is composited on one side of the bulletproof panel.

[0006] Technical Solution 2: A method for manufacturing a bulletproof roof top plate, comprising: 1) fixing one or more layers of aramid III loom cloth on all sides to the wall of a plate forming mold cavity and placing the one or more layers of aramid III loom cloth in a tensioned state; 2) preparing high-toughness, high-hardness water-based resin powder, water, and a curing agent in a certain proportion; 3) mixing the curing agent and water in a certain proportion to form a standby solvent A; 3) adding high-strength, high-toughness, high-hardness water-based resin powder in a certain proportion to a container, then pouring the standby solvent A into the high-strength, high-toughness, high-hardness water-based resin powder and mixing them to form a standby resin liquid B; 4) injecting the standby resin liquid B into the plate forming mold cavity, vacuuming out bubbles or exhausting bubbles and then letting it stand for several minutes before demolding to obtain a high-strength, high-toughness, high-hardness bulletproof plate; 5) laminating a high-hardness, high-toughness, high-elastic plate to one side of the bulletproof plate.

[0007] Compared with the background technology, the design of the bulletproof roof top plate of the present invention changes the explosion caused by the shell penetrating the roof into a rebound explosion, thereby preventing the sentry posts and barracks from being devastated. The design of the bulletproof plate in the bulletproof roof top plate prevents the occurrence of shrapnel entering the room after the high-hardness, high-toughness and high-elasticity plate is damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 This is a schematic diagram of the bulletproof roof top. DETAILED DESCRIPTION

[0009] Example 1: Refer to the attached Figure 1 A bulletproof roof top plate, one or more layers of aramid III loom cloth 1 are coated and cured with high-strength, high-toughness, high-hardness water-based resin powder 4 to form a bulletproof plate, and a high-hardness, high-toughness, high-elastic plate 3 is compounded on one side of the bulletproof plate.

[0010] Example 2: Based on Example 1, a high-hardness, high-toughness, high-elasticity plate has a plurality of high-elasticity columns 3 on one side. The high-elasticity columns 3 are polymer elastic columns or high-elasticity springs.

[0011] Example 3: Based on Example 1 or Examples 1 and 2, the aramid III loom cloth can be replaced by an ultra-high molecular weight polyethylene fiber loom cloth.

[0012] Example 4: Based on Example 1 or Examples 1 and 2, the aramid III woven cloth can be replaced by carbon fiber woven cloth.

[0013] Embodiment 2: Based on embodiment 1 or embodiments 1 and 2, a method for manufacturing a bulletproof roof top plate is characterized by: 1) fixing one or more layers of aramid III loom cloth on all sides to the wall of a plate forming mold cavity and making the one or more layers of aramid III loom cloth in a tensioned state; 2) high-toughness and high-hardness water-based resin powder: water: curing agent are prepared in proportion (the detailed process of their proportioning is existing technology and is not described here); 3) the curing agent and water are stirred in proportion to form a standby solvent A; 3) high-strength, high-toughness and high-hardness water-based resin powder is added to a container in proportion, and then the standby solvent A is poured into the high-strength, high-toughness and high-hardness water-based resin powder and mixed to form a standby resin liquid B; 4) the standby resin liquid B is injected into the plate forming mold cavity, and the bubbles are vacuumed out or discharged and then left to stand for several minutes before demoulding to obtain a high-strength, high-toughness and high-hardness bulletproof plate; 5) the high-hardness, high-toughness and high-elastic plate is compounded on one side of the bulletproof plate.

[0014] Aramid III loom cloth can be replaced by ultra-high molecular weight polyethylene fiber loom cloth, or aramid III loom cloth can be replaced by carbon fiber loom cloth.

[0015] It should be understood that although the above embodiments provide a relatively detailed textual description of the design ideas of the present invention, these textual descriptions are only simple textual descriptions of the design ideas of the present invention, rather than limitations on the design ideas of the present invention. Any combination, addition or modification that does not exceed the design ideas of the present invention shall fall within the scope of protection of the present invention.

Claims

1. A method for manufacturing a bulletproof roof plate, characterized by: 1) One or more layers of aramid III loom cloth are fixed on the wall of a plate forming mold cavity and the one or more layers of aramid III loom cloth are in a tensioned state; 2) High-toughness and high-hardness water-based resin powder, water, and curing agent are prepared in proportion; 3) The curing agent and water are mixed in proportion to form a standby solvent A; 3) High-strength, high-toughness, high-hardness water-based resin powder is added to a container in proportion, and then the standby solvent A is poured into the high-strength, high-toughness, high-hardness water-based resin powder and mixed to form a standby resin liquid B; 4) The standby resin liquid B is injected into the plate forming mold cavity, and bubbles are extracted by vacuum or discharged, and then the bubble is allowed to stand for several minutes before demolding to obtain a high-strength, high-toughness, high-hardness bulletproof plate; 5) The high-hardness, high-toughness, high-elastic plate is laminated on one side of the bulletproof plate.

2. The method for manufacturing a bulletproof roof according to claim 1, wherein: Aramid III loom cloth can be replaced by ultra-high molecular weight polyethylene fiber loom cloth.

3. The method for manufacturing a bulletproof roof according to claim 1, wherein: Aramid III woven cloth can be replaced by carbon fiber woven cloth.

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