At present, the awareness of building fire prevention in our country is gradually improving, but the understanding of fire-resistant glass in China is still relatively simple, and it still stays in the understanding of single-piece fire-resistant glass. In Europe, fire-resistant glass is divided into single-piece fire-retardant glass and composite-insulated fire-resistant glass. Composite insulated fire-resistant glass is superior to single-piece fire-retardant glass in fire protection and other aspects.
Monolithic fire-resistant glass is a fire-resistant glass constructed of single-layer glass. In a certain period of time to maintain the fire integrity, blocking the open fire and toxic and harmful gases, but does not have the insulation effect of insulation.
In the event of a fire, the temperature difference between the front side and the back side of the ordinary glass will instantly form a large temperature difference. Under such a temperature difference, a strong non-uniform thermal stress will be generated within 1 to 2 minutes, resulting in glass breakage even after physics The tempered glass will be completely broken after 3 and 5 minutes.
The single-piece fireproof glass undergoes a high-temperature ion exchange chemical treatment process for more than 20 hours, which makes it possess the characteristics of low thermal expansion rate. The glass softens without breaking at high temperature, can maintain the integrity, and forms a barrier to flame and toxic and harmful. Gas diffusion, spreading safety barriers.
The main market leader in Europe's monolithic integrated products is the SCHOTT company in Germany.
The composite heat-insulated fire-proof glass is composed of a multi-layer glass original sheet and a water-soluble inorganic fire-proof glue sandwich, and meets the requirements of fire-resistance integrity and fire-resistant heat insulation.
The fireproof principle of the insulated fireproof glass is that, in the event of a fire, the special transparent chemical substance in the heat-insulating composite fireproof glass largely absorbs the heat in the flame and foams and expands, and at the same time becomes opaque white, effectively preventing The heat generated by the combustion is transmitted from the front side to the back side, and at the same time, the heat radiation from the flame of the glass on the front side is prevented from being transmitted to the back side. In this process, the entire glass remains intact, forming an effective barrier that can block the spread and spread of high-temperature toxic gases generated by flames, smoke, and combustion.
The heat-insulating and heat-radiation-proof function of the composite fireproof glass can prevent the escape or rescue personnel in the area of ​​the glass from being exposed to high-temperature heat and thermal radiation during the fire, and at the same time prevent combustible materials and articles in the area. Wood products and carpets are ignited by high temperatures and heat radiation for a certain period of time.
Europe has a strict definition of composite heat-insulated fire-retardant glass. It requires that the average heating temperature of the back-fire surface within the required fire-proof time is not higher than 140°C, and the temperature rise temperature at any point is not higher than 180°C.
In Europe, fire-rated glass must be fireproofed systematically together with fireproof frames, not just fireproof glass. At present, the importance of the framework is basically ignored when talking about fireproof glass. If the frame is not a fireproof frame, when a fire occurs, The frame has been softened and deformed, and even the best fire-retardant glass has no effect. The frame must be closely associated with the glass, and the corresponding frame mounting accessories are also very important.
In Europe, fire-retardant glass usually requires a water jet test. The so-called water jet test is to use a tap to fire the fire-resistant glass that has just undergone the prescribed fire test to see if the glass breaks immediately. The reason for this experiment is that when the firefighters arrive at the scene, the firefighters will perform the fire extinguishing. Once the glass breaks directly into the water, it may cause the fire to pass from the fire surface to the back surface when the fire is not extinguished.
Europe may also require glass fire protection in addition to the following requirements: security (security), solar control and thermal control (low-e coating), noise reduction (laminated glass sandwiched noise of PVB), under pressure (wind Pressure, snow pressure, etc.), long-term stability. These are only compound fireproof glass to meet the requirements. The main market leader in European composite insulated glass products is Pilkington, UK.
Monolithic fire-resistant glass is a fire-resistant glass constructed of single-layer glass. In a certain period of time to maintain the fire integrity, blocking the open fire and toxic and harmful gases, but does not have the insulation effect of insulation.
In the event of a fire, the temperature difference between the front side and the back side of the ordinary glass will instantly form a large temperature difference. Under such a temperature difference, a strong non-uniform thermal stress will be generated within 1 to 2 minutes, resulting in glass breakage even after physics The tempered glass will be completely broken after 3 and 5 minutes.
The single-piece fireproof glass undergoes a high-temperature ion exchange chemical treatment process for more than 20 hours, which makes it possess the characteristics of low thermal expansion rate. The glass softens without breaking at high temperature, can maintain the integrity, and forms a barrier to flame and toxic and harmful. Gas diffusion, spreading safety barriers.
The main market leader in Europe's monolithic integrated products is the SCHOTT company in Germany.
The composite heat-insulated fire-proof glass is composed of a multi-layer glass original sheet and a water-soluble inorganic fire-proof glue sandwich, and meets the requirements of fire-resistance integrity and fire-resistant heat insulation.
The fireproof principle of the insulated fireproof glass is that, in the event of a fire, the special transparent chemical substance in the heat-insulating composite fireproof glass largely absorbs the heat in the flame and foams and expands, and at the same time becomes opaque white, effectively preventing The heat generated by the combustion is transmitted from the front side to the back side, and at the same time, the heat radiation from the flame of the glass on the front side is prevented from being transmitted to the back side. In this process, the entire glass remains intact, forming an effective barrier that can block the spread and spread of high-temperature toxic gases generated by flames, smoke, and combustion.
The heat-insulating and heat-radiation-proof function of the composite fireproof glass can prevent the escape or rescue personnel in the area of ​​the glass from being exposed to high-temperature heat and thermal radiation during the fire, and at the same time prevent combustible materials and articles in the area. Wood products and carpets are ignited by high temperatures and heat radiation for a certain period of time.
Europe has a strict definition of composite heat-insulated fire-retardant glass. It requires that the average heating temperature of the back-fire surface within the required fire-proof time is not higher than 140°C, and the temperature rise temperature at any point is not higher than 180°C.
In Europe, fire-rated glass must be fireproofed systematically together with fireproof frames, not just fireproof glass. At present, the importance of the framework is basically ignored when talking about fireproof glass. If the frame is not a fireproof frame, when a fire occurs, The frame has been softened and deformed, and even the best fire-retardant glass has no effect. The frame must be closely associated with the glass, and the corresponding frame mounting accessories are also very important.
In Europe, fire-retardant glass usually requires a water jet test. The so-called water jet test is to use a tap to fire the fire-resistant glass that has just undergone the prescribed fire test to see if the glass breaks immediately. The reason for this experiment is that when the firefighters arrive at the scene, the firefighters will perform the fire extinguishing. Once the glass breaks directly into the water, it may cause the fire to pass from the fire surface to the back surface when the fire is not extinguished.
Europe may also require glass fire protection in addition to the following requirements: security (security), solar control and thermal control (low-e coating), noise reduction (laminated glass sandwiched noise of PVB), under pressure (wind Pressure, snow pressure, etc.), long-term stability. These are only compound fireproof glass to meet the requirements. The main market leader in European composite insulated glass products is Pilkington, UK.
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