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Hello everyone, I'm Xiaobian. Today, I will introduce bulletproof glass to you. The following content is organized by Xiaobian for reference.
bullet-proof glass
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 thermoplastic (usually lexan resin). Also called LEXAN PC RESIN). It has the appearance of ordinary glass and the behavior of transmitting light, providing some protection against small arms firing.
Bulletproof glass is actually made of multiple pieces of glass or high-strength organic sheets bonded together by a transparent glued material. Generally have the following three-layer structure:
① Bearing layer: This layer first withstands the impact and ruptures. Generally, glass with large thickness and high strength is used, which can destroy the warhead or change the shape of the warhead, so that it loses the ability to continue to move forward.
②Transition layer: Generally, an organic adhesive material is used, which has strong adhesion and good light resistance, and can absorb part of the impact energy and change the direction of the bullet. A very strong and transparent chemical film is sandwiched in laminated glass. This not only can effectively prevent bullets from firing, but also has the properties of anti-surge shock, anti-explosion, anti-vibration and no cracks after impact.
③Safety protection layer: This layer is made of 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 indicator of bulletproof glass is bulletproof ability. The indicator of bulletproof ability is measured from two aspects, one is the safety protection ability, and the other is the killing ability of the protected guns.
According to the degree of human protection, bulletproof glass can be divided into two types, one is safety type and the other is life safety type. After the safety bulletproof glass is shot, there is no splash on the non-bullet surface, which will not cause any harm to the human body; after the life safety bulletproof glass is shot, the non-bullet surface splashes, but the bullet cannot penetrate the glass. May cause secondary damage to the human body. Bulletproof glass has different requirements for its bulletproof ability according to different gun types. Bulletproof glass is divided into three series, the first is aviation bulletproof glass, the second is bulletproof glass for vehicles and ships, and the third is bulletproof glass for banks. The thickness is between 18mm and 40mm.
Bulletproof glass is a kind of high-security special glass that can remain intact or non-penetrating damage under a certain amount of bomb explosion attack, the glass does not break away from the frame.
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