1. What is the protection principle of bulletproof glass?
Bulletproof glass usually consists of polycarbonate fiber layers sandwiched between ordinary glass layers. The bullet can easily penetrate the outer glass, but the strong polycarbonate fiber layer will prevent the bullet from moving before it may penetrate the inner glass. Bulletproof glass is usually 70 mm to 75 mm thick.
Historically, bullet-proof glass was made of glass plates bonded together by liquid rubber. These large pieces of bulletproof glass were used for public purposes during World War II. They are usually as thick as 100 mm to 120 mm, but they are very heavy.
Bulletproof glass is a kind of safety glass with bulletproof and explosion-proof properties, which is produced by improving the manufacturing process of laminated glass. Just like its name, according to its thickness, manufacturing technology and interlayer, it can defend against attacks from BB bombs to grenades and even more powerful weapons.
Simply put, bulletproof glass is usually divided into three layers: load-bearing layer, transition layer and protective layer. Among them, the bearing layer is cannon fodder, which is used to deform or destroy the warhead when it is hit, greatly slowing down the speed of the warhead. This layer is mostly made of high-strength tempered glass or plexiglass. The transition layer is mostly polycarbonate fiber, and the toughness of the transition layer absorbs part of the kinetic energy of the warhead to ensure that the front and rear interlayers can still stick together after being broken. Like the load-bearing layer, the protective layer is usually made of high-strength tempered glass or plexiglass, which requires high strength, impact resistance, vibration resistance and certain toughness to ensure that it is not penetrated by bullets or shrapnel, thus playing the role of indoor safety protection.
With the increasing awareness of safety protection, one-way bullet-proof glass has been developed, which can protect the shooting from the outside, while the defender will fight back from the inside, and the bullet will hit the attacker on the outside through the glass. In fact, the principle of this one-way bulletproof glass is that the outer layer is brittle material and the inner layer is tough material, which is similar to ordinary bulletproof glass. In this way, the bullets flying from the outside hit the brittle layer first, and the kinetic energy is absorbed and intercepted by the ductile layer; But the bullet from the inside will penetrate the ductile layer first, because its energy is concentrated at a small point, and when the ductile layer expands outward, the brittle layer will break outward, which will not affect the bullet's continued progress. Bulletproof glass used in banks has also been wired, that is, a metal wire is sandwiched inside the glass. When it is impacted or damaged, the metal wire is pulled off, and the disturbance of current triggers the alarm device.
Generally speaking, the protective effect of bulletproof glass is directly proportional to the total thickness of glass and interlayer thickness, and the protective effect of tempered glass in the original glass sheet is better than that of ordinary flat glass.
2. What are the bullet-proof glass brands?
1, Taibo (founded in 1964, one of the largest glass industry companies in the world, a world-renowned brand and a leading enterprise in china glass, Taibo Changjiang Glass Co., Ltd.)
2. Fuyao (1987, a well-known trademark in China, one of the largest glass production suppliers in China, Fuyao Glass Industry Group Co., Ltd.).
3. Jinjing (established in 1904, China famous brand product, China famous trademark, one of the largest calendered glass bases in Asia, high-tech enterprise, Jinjing (Group) Co., Ltd.).
4. Luobo (1956, the largest comprehensive glass base in the central and western regions, a well-known trademark in China and a famous trademark in China, Luoyang Float Glass Group Co., Ltd. in China).
5. Hua Yao (1922, China well-known trademark, China well-known trademark, Hebei large-scale pillar enterprise group, * class enterprise technology center, China Hua Yao glass group company).
What is the principle of bulletproof glass protection? Bullet-proof glass can bring safer protection to indoor people. If you are worried about your life, you can also buy bulletproof glass. What are the bulletproof glass brands? There are not many brands that produce bullet-proof glass, and the price is relatively expensive, and it often needs to be customized.