Composite bulletproof plate and coating method

Abstract

The invention provides a composite bulletproof plate and a coating method, the composite bulletproof plate comprises a first coating layer and a ceramic plate coated in the first coating layer, the inner surface and the outer surface of the first coating layer are both coated with hot melt adhesive films, a composite material back plate is arranged above the ceramic plate, and a transition layer is arranged between the composite material back plate and the ceramic plate. The transition layer and the first coating layer are integrally formed tubular crack arrest fabric. According to the bulletproof plate, the ceramic plate is coated with the tubular crack arrest fabric with the inner surface and the outer surface coated with the hot melt adhesive films, the forming process is simple, one-time coating of the hot melt adhesive films and the tubular crack arrest fabric can be achieved, and efficiency is high.

Description

technical field [0001] The invention belongs to the technical field of protective armor, and in particular relates to a composite bulletproof plate and a cladding method. Background technique [0002] Ceramic composite bulletproof boards are generally made of materials such as ceramics and polyethylene PE. The bulletproof principle is: when a bullet hits a bulletproof board, the bullet hits the ceramic layer first, and the bullet with huge kinetic energy hits the ceramic layer and the ceramics shatter. At the same time, the huge impact energy generated by the impact point will be transmitted to the surroundings to absorb the kinetic energy of the bullet. When the bullet passes through the ceramic layer, it has lost most of its kinetic energy. When the bullet reaches the polyethylene layer, the polyethylene consumes the kinetic energy of the bullet through stretching, and wraps the bullet and the shrapnel, so that the bullet will not damage the human body, thereby playing a r...

AI Technical Summary

Problems solved by technology

[0003]At present, through the development and innovation of technology, the ceramic composite bulletproof plate is generally prepared by bonding and compounding the crack arrest layer, the ceramic layer and the back plate composite material layer. The anti-crack layer is mainly used to cover the outer surface of the ceramic layer to avoid secondary damage caused by the splash of fragments generated by the ceramic sheet when it is subjected to impact resistance. At present, the coating of the anti-crack layer is generally to cut high-performance fiber two-dimensional woven fabric into pieces After brushing glue or laying an adhesive film on the surface of the composite material of the ceramic plate and the back plate, and then aligning and placing the anti-crack layer, ceramic layer, adhesive film and the composite material of the back plate in sequence, it is formed by manual laying and pressing, so that not only The production efficiency is low; and the uneven laying force of the anti-crack fabric will cause uneven thickness of the coating glue or dislocation of the glue film, resulting in uneven surface of the ballistic plate product, which will affect the product quality

In addition, the two-dimensional anti-crack fabric used in the existing technology can only protect the outer surface of the ceramic from the impact of the fragments from causing secondary damage, while the fragments on the side of the ceramic cannot be protected. At the same time, the ceramic plate and the The interlayer performance of the composite material backboard is poor, and the bulletproof performance of the bulletproof board will decrease or the backboard will have a large back convex due to layering when it is impacted by bullets

The patent application with the publication number 110953933A discloses a three-dimensional constrained ceramic composite bulletproof panel. The tubular fabric on the surface of the bulletproof panel is orthogonally nested to form a boxed cladding layer, thereby realizing three-dimensional constraint. In the ceramic composite panel The ceramic layer and the fiber-reinforced composite material plate are bonded by adhesive film or adhesive, and the one-time covering of tubular fabric and adhesive film cannot be realized.

In addition, due to the high toughness and low melting point of PE composite materials, in order to achieve effective protection against armor-piercing incendiary bombs and give full play to the protection capabilities of ceramics and composite materials, high-strength, high-strength mold and high-temperature-resistant transition layer composite materials; the patent application publication number 112484575A discloses a bullet-proof insert with a fiber slow-release layer, which introduces a carbon fiber plate between the ceramic bullet-resisting layer and the fiber slow-release layer, It effectively improves its defense performance against heavy machine gun armor-piercing incendiary bombs, but its molding process is complicated and the efficiency is low

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