Question:
Foam sandwich board in line with the fire building requirements?
Foam sandwich board in line with the fire building requirements? There is no regulatory requirements in this area? I was in Jiangsu !! Thank you
Answer:
The common application of new composite sheet.
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The new composite sheet is mainly used in the exterior wall of the steel structure plant, the roof, the gymnasium's light roof, the clean room interior cut, the clean area roof, the cold storage box or the partition plate, the construction site office and the construction workers collective dormitory, Relief temporary resettlement housing, some units will also be used for composite materials workshop, office, rooms and even operating room partition. Now the implementation of building energy efficiency standards, the foam composite sheet is also widely used in building exterior insulation layer. The use of new composite materials in the building is very wide, the use of a lot, its combustion performance and fire resistance to the building's fire safety situation greatly affected.
The new composite sheet is a new type of building material developed rapidly from five to ten years. These new building materials can meet the technical indexes of building structure, insulation and other related aspects, and have low cost, low investment, light weight, convenient construction, reusable Characteristics, has been the construction of the administrative departments of the strong recommendation, so in the construction has been widely used to form a social habit. As part of the composite plate refractory grade low and sandwich material is a macromolecule material with flammability, high smoke physical and chemical properties, once the fire, will distribute a large number of toxic flue gas and easy to collapse, fire fighting difficulties, easily lead to casualties. There have been a lot of such as the main building blocks as building blocks of building fires, and there are many major casualties of fire accidents, this year in Jiangsu Province, fire hazard investigation and management program as one of the key elements of investigation. Jiangsu Province Fire Brigade also issued a special notice to effectively strengthen the composite sheet in the construction of the application of fire supervision and management. This paper mainly discusses the use of composite plate, comprehensive performance comparison and the disaster situation in the fire, the application of the composite plate in the fire to explore the issue to help design units and owners of scientific selection, from the source to eliminate fire hazards.
Suggestions on Optimum Selection of Composite Materials in Fire Scene and Their Use in Construction.
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Metal surface polystyrene foam sandwich panels in the application of the most widely used, usually with the roof panels, partition panels, ceiling panels, polystyrene foam in the fire and high temperature melting, so the first case of the performance of the bubble Melt shrinkage for the plastic melt adhesion on the metal surface, the plate lost support and integrity, followed by the performance of combustion and smoke, used as a partition board and ceiling panels will quickly collapse, thus affecting the evacuation, resulting in personnel Casualties, used as a roof will be hanging on the steel beam and other roof load bearing components, as long as the overall steel roof trusses because of fire deformation and loss of support, will not collapse. Metal surface polyurethane sandwich panels in the case of fire mainly in the sandwich layer of smoldering and smoke, unburned parts will not be due to the rapid loss of high temperature support. Polystyrene foam composites coated with non-combustible materials such as concrete mortar will be lost in the case of fire. The support force collapses, flips, accelerates the spread of fire along the facade.
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Composite materials in the construction of the actual selection should take into account all aspects of the requirements, according to the actual needs of the scientific selection.
Comparison of Common Composites and Their Comprehensive Performance.
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The new composite plate common metal surface sandwich panels, mortar surface steel sandwich panels, steel mesh sandwich panels, composite lightweight sandwich partition board, composite hollow prefabricated partition board, polystyrene foam mortar powder layer The The metal surface sandwich panel includes metal surface polystyrene sandwich panel, metal surface rigid polyurethane sandwich panel, metal surface rock wool (slag cotton) sandwich panel, single layer color steel rock wool sandwich aluminum thin composite board, Metal gypsum sandwich panels, metal gypsum rock wool sandwich panels. The author through the daily supervision of the relevant situation on the performance of the relevant metal surface composite sheet were a comprehensive comparison, see the following table:
Through the above comparison can be seen: metal surface composite fire hazard mainly flammable, easy to melt dripping, high smoke, easy to lose the integrity of the metal surface rock wool (slag cotton) sandwich board fire resistance and combustion Performance can be, the insulation performance is acceptable, but the normal use of the firmness is not enough, the impact on the environment; metal gypsum sandwich panel is both fire and solid, but the insulation performance is poor, the price is more expensive; non-combustible hard Polyurethane metal sandwich panels are expensive.
There are many partitions, certainly not meet the requirements of the fire partition is the partition of the building can be used.