Zhaoguan Glass
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Fire-rated glass
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Detailed Introduction
• Definition: Fire-rated glass is a special type of glass that maintains its integrity and insulation properties during a specified fire resistance test.
• Classification: According to structure, it can be divided into composite fire-rated glass and single-pane fire-rated glass. Composite fire-rated glass is made of two or more layers of glass sandwiched between fire-resistant adhesive layers; single-pane fire-rated glass is made of a single layer of glass that has undergone special chemical treatment or physical processing. According to fire resistance performance, it can be divided into heat-insulating fire-rated glass (Class A) and non-heat-insulating fire-rated glass (Class C). Class A fire-rated glass maintains both integrity and insulation during a fire, while Class C fire-rated glass only maintains integrity.
• Characteristics: It has good fire-resistant properties, capable of preventing the spread of flames and heat transfer within a certain period; it also has the light transmission and transparency of ordinary glass, meeting lighting and visual requirements.
Fire Prevention Principle
1 Composite Fire-Rated Glass
• Heat Insulation Principle: When exposed to high temperatures, the intermediate fire-resistant adhesive layer will rapidly expand, forming a thick insulating layer to prevent heat transfer. At the same time, the flame retardants in the fire-resistant adhesive layer will decompose, absorbing heat and releasing incombustible gases to reduce oxygen concentration and suppress combustion.
• Maintaining Integrity Principle: There is good adhesion between the glass and the fire-resistant adhesive layer. In a fire, even if the glass breaks, the fire-resistant adhesive layer can hold the fragments together, maintaining the overall structure of the glass and preventing flames and smoke from passing through.
2 Single-Pane Fire-Rated Glass
• Heat Insulation Principle: Through special chemical treatment or physical processing of the glass, a high-heat-resistant coating is formed on the glass surface, or the internal structure of the glass is changed, so that it can effectively block heat conduction at high temperatures.
• Maintaining Integrity Principle: Special processing techniques improve the glass's high-temperature resistance and mechanical strength, making it less prone to breakage under high-temperature fire conditions, or even if it breaks, it can maintain a certain shape and structure, preventing flames and heat from passing through.
Applications
• Building Doors and Windows: Used in building fire doors and fire windows, ensuring both lighting and visibility for personnel evacuation while effectively preventing the spread of fire.
• Building Curtain Walls: As a main material for fire-rated curtain walls in some large public buildings and high-rise buildings, improving the overall fire safety performance of the building.
• Interior Partitions: Fire-rated partitions in places such as shopping malls, office buildings, and hotels, separating spaces and preventing fires from spreading rapidly between different areas.
• Fire Fighting Facilities: Glass in areas such as the front rooms of fire elevators and stairwells requires fire-resistant properties to ensure the safety of fire escape routes.
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Fire-rated glass is a special type of glass that maintains its integrity and insulation properties during a specified fire resistance test.
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