国产乱码一区二区三区下载 _一级特黄国产高清毛片97看片_日本三级香港三级人妇电影精品_人体大胆一区二区无码视频_国产的精品视频免费观看_亚洲高清无码不卡视频_色婷婷综合缴情免费观看看_色欲AV伊人久久大香线焦影院_激情亚洲精品伊人久久综合 _国产A级免费无码播放

Category introduction of laminated fireproof glass and alarm glass

Anti riot and anti-theft alarm glass: anti riot and anti-theft glass refers to the glass that is transparent and high-strength, can not be damaged with simple tools, and can effectively prevent theft or damage. It is usually made of multi-layer high-strength organic transparent materials and glued layer materials. In order to give early warning performance, the glued layer can also be sandwiched with metal mesh, and embedded with visible light, infrared, temperature, pressure and other sensors and alarm devices. Once a thief commits a crime and touches the alarm device in the glass, or even triggers the wound weapon or dizzy gas device connected in series with it, there will be an alarm and corresponding measures, so as to catch the thief in time and protect the property from theft. Anti theft glass is mainly used in bank vaults, weapon warehouses, cultural relics warehouses, Exhibition cabinets, precious commodity counters, etc.

Fireproof glass is a new type of functional material for building, which has good light transmission performance and fire retardant performance. According to the characteristics of production process, fireproof laminated glass can be divided into composite fireproof glass and pouring fireproof glass. There are many varieties of fireproof glass, and the main varieties are as follows:

(1) laminated composite fireproof glass (FFB) laminated composite fireproof glass is a common and extremely transparent laminated composite fireproof glass in domestic and foreign markets. The utility model is composed of two or more layers of flat glass sandwiched with transparent fireproof adhesive. The strength of its fire resistance mainly depends on the performance of fire-proof adhesive. Generally, fireproof adhesives can be divided into two categories: inorganic materials (sodium silicate or also known as water glass) and organic materials (acrylamide and flame retardant, etc.). China's manufacturers of fireproof glass widely use inorganic materials as adhesives to make fireproof glass. Because of its cheap and rich source of raw materials, it can be cured at room temperature or below l00 ℃. In case of fire, the adhesive will rapidly foam and expand to form an insulated fire-resistant and heat-insulating foam layer, which can absorb a lot of heat. If it is broken in case of fire, the broken glass sheet can be bonded to maintain the integrity of the fireproof glass without hurting people.

(2) wired fireproof glass is a composite glass made by adding metal wire and mesh into the interlayer of organic film or inorganic adhesive between two layers of glass. After adding wire or mesh, it can not only improve the overall impact strength of fireproof glass, but also connect with electric heating and alarm system to play a variety of functions. The only defect of the fireproof glass is poor light transmittance.

(3) special fire-proof glass special fire-proof glass refers to the glass with special composition as the glass substrate, rather than the glass with ordinary flat glass composition. It mainly includes borosilicate fireproof glass, aluminosilicate fireproof glass, microcrystalline fireproof glass, etc. The common main characteristics are: due to different components, the softening point of glass is high, generally above 900 ℃; The coefficient of thermal expansion is low, and generally it will not crack or deform due to high temperature under strong flame; In particular, in addition to the above characteristics, microcrystalline fireproof glass also has high mechanical strength, high folding, high pressure, good chemical stability and physical and mechanical properties.

It also has the advantages of high softening temperature and low coefficient of thermal expansion. They are good products as fireproof glass.

(4) hollow fireproof glass hollow fireproof glass is a new product of today's fireproof glass. It is a new type of glass with the functions of sound insulation, noise reduction, heat insulation and fire prevention. On the basis of making hollow glass, it only needs to coat a layer of metal salt on the glass substrate on the side that may contact with fire or flame, dry it under a certain temperature and humidity, and then process it into hollow fireproof glass for hollow glass doors, windows, partitions, partition walls, fire passages, etc. with different shapes.

(5) single piece fireproof glass (DFB) single piece fireproof glass (DFB) is a single-layer transparent special glass with fire resistance integrity within a certain fire resistance time limit and can block the spread of flame and smoke. Due to its light and thin texture, good permeability and high strength, single fireproof glass is now widely used in building external curtain wall, building external window, partition wall, smoke retaining vertical wall, shared space, atrium, daylighting roof, furnace front window, etc.

Article source: fireproof glass http://www.m.hzjunyuekj.cn/