Safety Glass

Safety glass is made of a strong plastic inner layer (PVB) the two pieces of glass at a certain temperature and pressure from paste, also known as laminated glass or laminated glass, the plastic inner layer to absorb the impact and explosion arising from the part of the energy and shock wave pressure, even if they are not scattered shattered splash. Laminated glass can be used depending on the needs of ordinary glass, tempered glass, hot glass to make enhancements can also be made of hollow glass. Safety glass has good security, impact resistance and penetration resistance, with security, bulletproof, explosion-proof features.
Residential and commercial areas for frequent theft, thieves often target those who succeed and difficult to find easy targets. Glass windows and doors are usually the target of attack, safety glass that can withstand a hammer, iron bars and bricks beat, criminals used stolen tools for glass cutting knife silent, can effectively prevent or delay the invasion of criminal theft and forced greatly improved preventive effect.
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Safety glass typically used in a number of important facilities, such as bank doors, valuables showcase, prisons and correctional doors and windows. These sites may have been holding various weapon of Qunfei continuous attacks. The high-strength safety glass can resist penetration in a period of time, for other devices to win enough time to respond. Some of the world's most famous cultural relics, such as "Mona Lisa" and "Declaration of Independence" is protected by safety glass. Bulletproof glass is a multi-layer multi-layer glass and PVB interlayers bonded processing, it can be withstood pistols, rifles and even the strong impact of the bomb blast. Terrorist bombings in the Global City, the glass fragments is the main reason for causing personal injury. Explosion, the glass fragments flying like rain, or even fly a few kilometers outside number of injuries caused by the account for 90% or more. Laminated glass is shattered if the bombing, still intact in the box, greatly reduced the glass fragments of human injury. The main varieties of safety glass: tempered glass, laminated glass, bullet-proof glass, security glass, fire glass, wired glass and protective glass.
Tempered glass
The enhanced quenching glass. Uniform heating of the glass softening temperature, high-speed air-cooling medium such as sudden cold and made of glass. The glass surface of a uniform compressive stress, which can improve the mechanical strength of glass and thermal shock resistance. Using air as a cooling medium, said steel; with oil and other liquid as the cooling medium, said liquid steel; used as a cooling medium, said molten salt bath of steel. According to their degree and the product just different shapes can be divided into complete steel, regional steel, semi-steel, flat steel and bent steel and other varieties. LCD glass - zhengcheng
Bending strength of glass than untreated glass big 3 to 5 times, up to 150 ~ 250 MPa, thermal stability increased 3 to 4 times, can withstand the temperature 200 ~ 250 ℃ rapid change, fragmentation formed when no sharp angular particles, small damage on the human body is the most widely used safety glass. In recent years, the use of new steel processes, such as roller or air cushion flat steel; the development of a new cooling medium, such as adding to air a special solid medium, high and volatile organic silicone liquid and solid media contact method, etc., greatly improve the cooling efficiency of the cooling medium can be steel of 1.7 to 3 mm thin glass and the glass further enhance the strength and reduce weight. Also developed printing, spray color glaze glazed glass. Tempered glass is mainly used in building windows, doors, windows, building envelope and used as decorative materials.
Laminated Glass
In two or more pieces of glass sandwiched between a transparent film of polyvinyl butyral or other bonding material, by heat and pressure laminated composite made of glass. When affected by shocks, as the middle layer of flexible, strong bond, can improve the impact strength, when the pieces do not fall broken, do not splash, can effectively prevent or mitigate harm to human body. You can also use heat-absorbing glass, heat reflective glass, colored glass and the conductive film glass, made of special laminated glass. Mainly for transport vehicles and buildings with special requirements of the site. Glass guard - zhengcheng
Laminated glass as a safety glass broken by the impact, due to the middle of the two pieces of ordinary glass, PVB film clip bonding effect, not like an ordinary broken glass fragments resulting from sharp injuries. Same time, it's PVB interlayers of available noise, the performance sun control and make it with energy saving, environmental protection functions of the new building materials: using laminated glass can not only cut off penetrate ordinary glass fit 1000 to 2000 Hz noise, and It can block more than 99% of ultraviolet and infrared absorption spectra of the heat. Consistent with the performance of new building materials as laminated glass safety glass is bound to play a big role in use.
Bulletproof glass and security glass
With tempered glass, the chemical reinforced glass, wired (network) of glass and high strength organic material (such as directional plexiglass, polycarbonate, etc.), and use made of composite laminated glass technology. According to different requirements, can choose different materials of different composite structure, to be able to withstand bullets fired from a distance performance and the effect of preventing theft. Generally used for a special bullet-proof or security requirements such as buildings and border observation post.
Fire-resistant glass
Refers to the cohesion between the two pieces of glass in a transparent gel when the temperature, the decomposition and absorb a large amount of heat, so the glass can be maintained temporarily broken glass and prevent the spread of fire. Generally used for buildings or fire lane fire partition board and so on. In addition, hollow glass blocks, wired (network) of glass has some fire effects.
Wired (network) of glass
Rolling molding, metal wire embedded in the glass house (network) of the glass. When the glass shattered, its debris is still hanging in the wire (network) without falling on. Short period of time to stop the flame when the fire spread, delay the expansion of the fire can be used as fire protection building windows and Smoke partitions. Generally used for building a transparent protective structures, skylights and courtyards, parks, zoos and sporting venues transparent fence.
Protective glass
That can shield the X-ray and thermal neutron, the glass against the body. The transparent, with high-energy rays can absorb lead and boron thermal neutron absorption. Stability of high-energy rays, the irradiation does not change color, no crystallization, no damage. Mainly used for research, production and application of atomic energy, isotopes of building protection requirements of the site.
Identification
1. The most important and safest way is to look at safety glass products, there is no 3C certification mark. Because, according to the provisions of safety glass must be 3C certification mark. 2. By listening, that the glass by hand percussion, and if given the crisp sound of the glass, then glass is tempered glass, on the contrary, compared with ordinary glass. 3. Using polarized light film, is a tempered glass sheet through polarized edge of the glass to see color section, and in the observation of the surface layer of glass, you can see black and white spots. Polarizing film can be found in the camera lens or glasses, and when attention to the adjustment of light source, which is more easily observed.
Using position
Architecture requires the use of safety glass safety glass cover of the bit
Location: "Building safety glass regulations" (January 1, 2004 effective) listed buildings in need of glass as a building material of the following parts must be safety glass. (A) and 7 layers 7 layers above the window outside the building. (B) larger than 1.5m2 of windows or glass bottom (glass in the frame assembly is completed, the glass of the light part of the installation material covered with glass opaque part of the boundary) is less than 500mm from the surface of the final fitting windows. (C) of the wall (except for the Glass screen). (D) tilt window assembly, various types of ceiling (including skylights, light top), the ceiling. (E) scenic elevator and outside guards. (F) interior partition, wall. (Vii) the stairs, balconies, platforms, corridors and the atrium bar board fence board. (H) for pedestrians to walk under the ground panel. (Ix) the entrances and exits of public buildings, and other parts of the hall (including 1, 2 glass doors, glass in the door at the top 3 on both sides of the glass in the door, the vertical openings near the doorway opening from the side and small doorway at 300mm). (X) are vulnerable to impact, the impact of causing harm to other parts of the body.