Military bulletproof glass company - support customization What is bulletproof glass?

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Bulletproof glass is a composite material obtained by special processing of glass (or plexiglass) and high-quality engineering plastics. It is usually a transparent material, usually consisting of a polycarbonate fiber layer sandwiched between ordinary glass layers.

1、 Basic definition

Bulletproof glass is a composite material obtained by special processing of glass (or plexiglass) and high-quality engineering plastics. It is usually a transparent material, such as PVB/polycarbonate fiber thermoplastic (commonly known as Lexan resin, also known as Lexan PC RESIN). It has the appearance of ordinary glass and the ability to transmit light, providing a certain degree of protection against small arms fire.

Safety glass is made of a tough plastic inner layer (pc/PVB) that sticks two pieces of glass under a certain temperature and pressure. The thickness of the laminated pc is generally 0.5mm-5mm. Also known as laminated glass or laminated glass, its plastic inner layer can absorb some of the energy and shock wave pressure generated during the impact and explosion process, and even if it is shattered, it will not scatter and splash. Laminated glass can be made of ordinary glass, tempered glass, heat strengthened glass, or hollow glass according to different needs. Safety glass has good safety, impact resistance and penetration resistance, and has anti-theft, bulletproof, and explosion-proof functions.

2、 Function analysis

The bulletproof glass produced by different manufacturers varies. But basically, a layer of polycarbonate material is sandwiched between ordinary glass layers, a process called lamination. In this process, a substance similar to but thicker than ordinary glass is formed. Polycarbonate is a rigid transparent plastic with a thickness of bulletproof glass ranging from 7 millimeters to 75 millimeters. Bullets fired on bulletproof glass can break through the outer glass, but the polycarbonate glass material layer can absorb the energy of the bullet, preventing it from penetrating the inner glass layer. These large pieces of bulletproof glass have been used for public purposes during the Second World War, usually as thick as 10.0 to 12.0 centimeters, and are extremely heavy.

3、 Structural composition

Bulletproof glass is actually made by bonding multiple pieces of glass or high-strength organic panels together using a transparent adhesive material. Generally, it has the following three-layer structure:

① Load bearing layer: This layer first undergoes impact and breaks, typically using thick, high-strength glass that can damage or change the shape of the warhead, making it unable to continue moving forward.

② Transition layer: Generally made of organic adhesive material, with strong adhesion and good light resistance, it can absorb some impact energy and change the direction of the bullet. A very strong and transparent chemical film is sandwiched in the laminated glass. This not only effectively prevents bullets from firing, but also has the performance of resisting surge impact, explosion resistance, shock resistance, and no cracks after impact.

③ Safety protection layer: This layer uses high-strength glass or high-strength transparent organic material, which has good elasticity and toughness, can absorb most of the impact energy, and ensure that bullets cannot pass through this layer

The most important performance index of bulletproof glass is its bulletproof ability. The indicators of bulletproof ability are measured from two aspects, one is the safety protection ability, and the other is the lethal ability of the guns being protected.

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