Fireproof glass is a new type of building material, which has excellent light transmission function and fire retardant function It has the common characteristics of high heat resistance, light specific gravity, high light transmittance, no yellowing, no bubbles and so on The fire-proof glass with good function still has outstanding fire resistance and flame retardancy under the high temperature above 1000 ℃

Functions and features of fireproof glass:

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; The pouring type fireproof glass is made of two or more pieces of single-layer flat glass, which are sealed with frame strips, and then filled with fireproof liquid through the pouring port, cemented and sealed; At room temperature and in the early stage of fire attack, composite fireproof glass has the same light transmission function and decorative function as general flat glass; After a fire, with the extension and expansion of the fire, the fire temperature rises, and the composite fireproof glass fireproof interlayer expands and foams when heated to form a very thick fireproof and thermal insulation layer, which has the effect of fireproof and thermal insulation and fireproof separation However, the composite fire-proof glass generally has some problems, such as tiny bubbles, poor cold resistance and poor light transmittance, which affect its application effect

Thin coated fireproof glass is made by spraying fireproof transparent liquid on the surface of single-layer or multi-layer flat glass substrate and drying and curing When the thin coated fireproof glass is exposed to fire, the fireproof protective layer is heated and expanded to form a dense fireproof protective layer to protect the substrate glass and prevent the extension of fire

(1) judging from the glass function of the window, the glass of the fire window shall be tempered; The glass of general windows is not necessarily tempered glass

(2) the glass of fire windows shall generally have fire signs, while the general glass does not Fireproof glass can be filled with fireproof liquid, which does not affect the fire resistance function of fireproof window, and the products passing the test can be selected The light transmittance of glass shall not be less than 75% of that of ordinary flat glass with the same number of layers

(3) according to the data, the general fire windows are made of steel, and the general common ones are plastic steel, aluminum alloy and wood According to national regulations, fire windows can be divided into class A, B and C. different fire grades have different fire resistance times No less than 1.5 hours for window C and no less than 1.5 hours for window B According to the specification GB16809-2008, the sealing data between the fireproof window, structure and fireproof glass shall be flame retardant data, which can achieve the effect of fire prevention and smoke separation in case of fire Because of the fast heat conduction function of general windows, there is no fire resistance time, so they can't have a good fire prevention effect

(4) in terms of price, the price of steel fireproof window for construction is higher than that of general aluminum alloy window

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