Deep Processing Glass - Introduction to Laminated Glass

Laminated glass is a safety glass made of two or more pieces of glass bonded together with a synthetic resin. The original piece of laminated glass can be ordinary glass, tempered glass, semi-tempered glass, coated glass, heat-absorbing glass, hot-bent glass, etc.; the most common organic material in the middle layer is PVB (polyvinyl butyral). There are also methyl methacrylate, silicones, polyurethanes, and the like. When the outer glass is cracked by an impact, the chips are glued and only radial cracks are formed, resulting in no personal injury or death due to fragmentation. There are two methods for producing laminated glass: the film method (dry method) and the grouting method (wet method), but the current dry method production is the mainstream.

Bulletproof glass is a scientific combination of multiple sheets of transparent flat glass of various thicknesses and multiple sheets of PVB film. Since glass and PVB film are strongly bonded and almost unity, and because PVB film has good toughness because of its high hardness, when the bullets come into contact with glass, their impact energy can be weakened. The degree is as low as zero, so it cannot be penetrated. Bulletproof glass can be used as military defenses, guard glass for bank counters, display cabinets for valuables such as gold and silver jewelry, and other specific workplaces.
Anti-theft anti-theft alarm Glass anti-riot anti-theft glass is transparent and high-strength glass that cannot be destroyed with simple tools and can effectively prevent theft or destruction of incidents. It is usually a glass made of multiple layers of high-strength organic transparent material and a glue layer material. In order to give early warning performance, a metal mesh may be sandwiched in the glue layer, and visible light, infrared rays, temperature, pressure, etc. are embedded. Sensors and alarm devices. Once a thief commits a crime, touches an alarm device in the glass, and even triggers a series of wounded weapons or stunning gas devices, etc., an alarm will occur and corresponding measures will be taken so that the thieves can be taken in time to protect the property from theft. Anti-theft glass is mainly used for bank vaults, weapons warehouses, cultural relics warehouses and exhibition cabinets, and valuable commodity counters.

Fireproof glass fireproof glass is a new functional material for construction, with good light transmission performance and fire retardant performance. Fire-resistant laminated glass can be divided into composite fireproof glass and perfusion fireproof glass according to the production process characteristics. There are many varieties of fire-resistant glass. The main varieties are as follows:
(1) Sandwich fire-retardant glass (FFB) is a common and extremely popular transparent laminated fireproof glass in domestic and foreign markets. It consists of two or more layers of flat glass sandwiched by a transparent fireproof adhesive. The strength of its fire resistance depends mainly on the performance of the fire-retardant adhesive. Fireproof adhesives can be generally classified into two major categories: inorganic materials (sodium silicate or water glass) and organic materials (acrylamide and flame retardant). China's manufacturers of fire-proof glass widely use inorganic materials as adhesives to make fire-proof glass. Because raw materials are cheap and abundant, they can be cured at room temperature or below 100°C. When the fireproof glass is exposed to fire, the adhesive will quickly expand and expand to form a heat-insulating, fire-retardant foam layer, which can absorb a large amount of heat. In the event of a fire break, broken glass pieces can be bonded to maintain the integrity of the fireproof glass without injuring others.

(2) Wire-bonded fire-retardant glass It is a composite glass body made by adding metal wires and nets to the sandwich of organic film or inorganic adhesive between two glass layers. The addition of wire or mesh not only improves the overall impact strength of the fire-rated glass, but also serves as a versatile function in connection with electrical heating and security alarm systems. The only defect of this fireproof glass is poor light transmission.
(3) Special fire-resistant glass refers to the glass that is used as a special component glass instead of the ordinary flat glass component. It mainly includes borosilicate fireproof glass, aluminosilicate fireproof glass, and microcrystalline fireproof glass. Its common main features are: due to the different composition, the softening point of the glass is high, generally above 900°C; the coefficient of thermal expansion is low, and generally it will not be burst or deformed due to high temperature under strong flames; especially microcrystalline fireproof glass, In addition to the above characteristics, it also has high mechanical strength, flexural strength, high compressive strength and good chemical stability and physical and mechanical properties. It also has the advantages of high softening temperature and small coefficient of thermal expansion. They are used as fireproof glass and are all of the highest quality.

(4) Hollow fireproof glass is the new product of today's fireproof glass. It is a new type of glass that combines noise reduction, noise insulation, heat insulation and fire protection. It is based on the production of insulating glass. It only needs to coat a layer of metal salt on a glass substrate that may come into contact with fire or flame. After drying at a certain temperature and humidity, it can be processed into hollow glass doors with different shapes. Hollow fireproof glass used in windows, partitions, partitions, and fire protection roads.
(5) Single-piece fire-retardant glass (DFB) is a single-layer transparent special glass that has fire-resistant integrity within a certain fire-resistance limit and can effectively block the spread of flame and smoke. Due to its light weight, good permeability, and high strength, the single-piece fireproof glass is now widely used in exterior curtain walls, exterior windows, partition walls, smoke screens, shared spaces, atriums, lighting roofs, and front-window windows.

Antenna glass is a type of conductor in the glass (usually 0. 1 ~ 0. 2mm copper wire welded to the middle film), and then sandwiched between the two glass, can play a role in the receiving antenna . The antenna, which is sandwiched in glass, is not susceptible to corrosion, can accept all waveband radio waves, and can eliminate the wind noise generated by the whip antenna.
PVB film laminated glass refers to a laminated glass made by sandwiching a PVB interlayer film between two or more glass sheets. The main component of PVB film is polyvinyl butyral, which is the condensation product of polyvinyl alcohol and butyraldehyde. PVB interlayer can reduce the amount of noise that penetrates the glass, reduce noise decibels, and achieve sound insulation. The laminated glass made of PVB plastic interlayer can effectively block the common noise from 1000 to 2000Hz.

EN Membrane Laminated Glass is a vacuum one-step method (without an autoclave) for sandwich glass with an EN film as the intermediate layer. The EN film is an intermediate used in the production of special glass products such as safety flat laminated glass, curved laminated glass, process laminated glass, bullet-proof glass, and solar battery (the chemical composition of the EN film is ethylene vinyl acetate fiber polymer). It can be used to sandwich silk, cloth, paper products and various functional films, composite sandwiched glass and synthetic resin plates, etc. It is safe, energy-saving, aesthetic, etc., and the material utilization rate is extremely high. Diaphragms can be used for splicing, and the glass surface is not Leave traces.
The air-conditioned glass is made of double-glazed glass. It sends heat to the double-glazed sandwich, which is then vented into the room instead of the radiator. This not only saves energy, but also is convenient, soundproof and dustproof. In the summer, it can be replaced by air conditioning.

Laminated glass is a laminated glass that integrates film, decoration, and glass. According to the different decorations, it presents different decorative effects and practical functions, such as paper, brocade, various color films, screens, and metal plates. The decorative laminated glass can not only achieve elegant and refined abstract effect, but also can play a role in security, security and electrostatic shielding.
Unbreakable glass is a multi-layered glass sandwiched by crumbs bonded to a transparent plastic film. This polyester-based plastic film has a viscous semi-liquid consistency, and when someone tries to break it, the impacted polyurethane film will slowly gather and recover its own unique integrity. This glass can be used for airplanes, cars, etc.