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Composite fireproof glass (or fireproof laminated glass) is made by bonding and compounding two or more single-layer flat glass with swelling flame retardant cement; In the meantime, the pouring type fireproof glass is made of two or more single-layer flat glass, which is first sealed with a frame strip, and then filled with fireproof liquid through the pouring port, cemented and sealed; At room temperature and in the early stage of fire, composite fireproof glass has the same light transmission function and decorative function as ordinary flat glass; After a fire, with the extension and expansion of the fire, the fire temperature increases, and the composite fireproof glass fireproof interlayer expands and foams after heating, forming a very thick fireproof and thermal insulation layer, which plays the role of fireproof and thermal insulation and fireproof separation. However, the composite fireproof glass usually has fine bubbles, cold resistance and poor light transmittance, which affect its application.

Thin coated fireproof glass is sprayed with fireproof transparent liquid on the surface of single-layer or multi-layer flat glass substrate, and then made into fireproof glass after drying and curing. When the thin coated fireproof glass is exposed to fire, the fireproof maintenance layer is heated and expanded to form a fine fireproof maintenance layer to maintain the base plate glass and curb the extension of fire.

According to the structure, fireproof wired glass is divided into wired glass and fireproof wired laminated glass. Wire glass is a kind of glass produced by calendering. When the liquid glass is formed between the calendering rollers, the preheated metal wire or metal mesh is pressed into the glass plate to make the wired glass. Fireproof wire sandwich glass is made by placing metal mesh in the sandwich in the production process of composite fireproof glass. When the wire glass is subjected to external force or split in the fire, the glass fragments can still be fixed on the wire or net without falling off, which can prevent the penetration of flame and inhibit the extension of fire. The big defect of wire glass is that the heat insulation function is very poor. The temperature of the back fire surface is as high as 400 ~ 500 ℃ after a fire for more than ten minutes. Fireproof laminated glass has the advantages of both laminated glass and fireproof laminated glass, and some have the prospect of popularization and application. However, the filament glass produced in China is not transparent and can not play the role of light transmission and decoration of glass, which affects its popularization and application.

Single piece fireproof glass is to select physical and chemical methods to treat the common glass, modify its appearance, improve the thermal stress function of the glass, and then ensure that it will not split under the impact of flame or high temperature, so as to prevent the flame from penetrating the fireproof glass and convey the intention of fire. Because of its light weight, light transmittance and decoration, single fireproof glass is used in the construction of continuous addition. However, single piece of fireproof glass can not suppress the thermal radiation of flame, and can only be viewed through class C fireproof glass. This must be considered when it is used as fireproof separation.

Article source: fireproof glass http://hanzhicheng.cn/