Fireproof glass structure and characteristics commonly used in buildings

Composite fireproof glass (or fireproof laminated glass) is made by bonding together two or more single-layer flat glass sheets with an intumescent flame-retardant binder, wherein the fire-proof glass is in two pieces or Two or more pieces of single-layer flat glass are firstly sealed with a frame strip, and then the fireproof liquid is poured into the filling port and is made by cementing and sealing. At room temperature and early stage of fire, the composite fire-resistant glass is the same as ordinary flat glass. With the light transmission performance and decorative performance; after a fire, with the spread of the fire to expand, the fire temperature rises, the composite fire-resistant glass fire insulation interlayer thermal expansion foam, forming a thick layer of fire insulation, fire insulation and fire prevention Separation. However, the composite fireproof glass generally has tiny air bubbles and problems such as poor cold resistance and poor light transmission, affecting its use effect.

Thin-coated fireproof glass is fire-proof transparent liquid sprayed on the surface of a single-layer or multi-layer flat glass substrate, and is made into fire-proof glass after being dried and solidified. When a thin-coated fire-resistant glass meets fire, the fire protection layer is thermally expanded to form a dense fire protection layer to protect the glass of the substrate and prevent the spread of fire.

The fire-resistant wire glass is divided into wire-bonded glass and fire-resistant wire-bonded laminated glass. Wire glass is a safety glass produced by calendering. When the molten glass is formed between the calendering rolls, the preheated wire or metal mesh is pressed into the glass plate to form the wired glass. Fire-retardant laminated glass is made by placing a metal mesh in a sandwich during the production of a composite fireproof glass. When the wire glass is broken by an external force or in a fire, the glass fragments can still be fixed on the wire or the wire without falling off, which can prevent the flame from penetrating and play a role in preventing the spread of the fire. The biggest disadvantage of wire-bonded glass is its poor thermal insulation performance. The temperature of back fire surface is as high as 400-500°C for more than ten minutes. Fire-resistant laminated glass has the advantages of wire-bonded glass and fire-resistant laminated glass, and has a certain promotion and application prospects. However, the wire glass produced in China is not transparent and does not achieve the light transmission and decoration of the glass, which affects its popularization and application.

Single-piece fireproof glass is used to treat ordinary glass by physical and chemical methods to modify its surface and improve the thermal stress resistance of the glass so as to ensure that the flame does not break under the impact of flame or high temperature, so as to prevent the flame from penetrating the fireproof glass and Spread the purpose of the fire. Due to their light weight, transparency and decorative properties are the same as those of ordinary glass, and they are used in more and more buildings. However, a single piece of fire-resistant glass cannot block the thermal radiation of the flame and can only be detected by a Class C fire-resistant glass. This must be taken into account when it is used for fire separation.