Reduce The Fire Start From The Building's Exterior Wall Material - Construction, Insulation

At present, the building's exterior wall materials used primarily for polystyrene

, polyurethane and other organic materials, as well as rock wool, Glass Cotton inorganic materials. The organic material has poor heat resistance, aging resistance and deteriorating combustion and release large amounts of heat when burned, produce toxic smoke, speed up the fire spread, and many other shortcomings. The inorganic materials (such as fiber insulation materials with dust and small fiber) not only pollute the air and easily breed bacteria easily cause harm to human health. To ensure the building with both insulation, fire protection, but also on human health-friendly exterior wall materials from a variety of experiments show that phenolic foam can reach such a request.

Phenolic foam (PhenolicFoams, referred to as PF) as the "heat of the King", with capacity of light, good insulation, rigidity, dimensional stability and good features, and it has a similar coefficient of expansion of aluminum, are difficult to burning material, combustion produces only a small amount of poisonous gas carbon monoxide, smoke is low, will not melt, drip, its production cost is low. 1942, phenolic foam Plastic Has been made in the laboratory. Beginning of World War II, Germany will phenolic foam used in the aviation industry, as a light wood substitutes. Over the same period, the United Kingdom rubber foam Glue Company also developed a phenolic foam, mainly for floating side. In 1945, the United States, Union Carbide (UCC) companies to begin low-density phenolic resin foam and its production technology research. Phenolic foam production methods are two kinds of wet and dry. Wet is a phenolic resin, based on the resin system can be made into liquid, Europe and the United States often use this method manufactured phenolic foam. Wet production of phenolic foams, and most representative is the Nobel Explosives Company, the Joint Carbide (UCC) and Aisiqimu (Icechim) and other manufactured foam, the foam material synthesis and preparation process much the same, only way to control foam density differ. Dry foam is a thermoplastic phenolic resin-based, which can be made of resin systems for the solid state, which is the former Soviet Union first developed by another production line, the late 20th century, and mass 50, the current application and less volume.

20 century 80s, foreign scientists through the study of phenolic resin and its products and found that they have outstanding flame retardant, low smoke, low toxicity characteristics and excellent heat resistance. Since the 90s of the 20th century, including the phenolic foam, including phenolic Composite materials Been great progress, first by the United Kingdom, the United States and other countries military importance, be used in aerospace, defense and military fields, then be applied to civilian aircraft, ships, stations, oil wells and other fire safety-critical areas, and gradually push to high-rise buildings, hospitals, sports facilities and so on. In 1961, China's Ordnance Industry No. 53 Research Institute of dry phenolic foam has been studied and successfully applied in military industry. 80 years of the 20th century, China Phenolic foam of the wet to start, and the initial 90 in the 20th century industrialization of production, are more representative of the unit (except military research institutes outside) of Jinan University (formerly Shandong Building Materials University), Beijing University of Chemical Technology, Shandong Shengquan Chemical Corporation, Xiamen Outdo Materials, Shandong Sinar Mas Group, Shandong China Sea Corporation. Phenolic foam used in missiles and rockets early head insulation is. In recent years, due to high-rise buildings, transportation, ship, aviation and space technology such as synthetic foam on the thermal stability and flame resistance make strict demands are made of phenolic foam attention and rapid development. Now, the phenolic foam as a new multi-purpose foam material, its heat-resistant, flame retardant, self-extinguishing, flame penetration resistant, fire-free drip and to prevent the spread of the fire resistance of fire etc., has aroused highly valued. A new awareness of use of its flame resistance produced insulation material in high-rise buildings, high-temperature insulation, ultra-cold temperature protection has important practical value.

On the survival of humanity in all types of buildings, security is always out in the first place. Phenolic foam is a superior performance, fire, heat, noise, light Energy Products, its low thermal conductivity, density and the lowest is only 30 ~ 40kg/m3, and the level of phenolic flame retardant foam is widely used in the construction industry, polystyrene, polyurethane foam are far worse than the other; 25 mm thick phenolic foam Flat withstand the flames of 1700 for 10 minutes after injection, only slight charring the surface, but not burn, neither fire nor will distribute smoke and poisonous gas. Building Science and Technology Center in France had conducted a comprehensive inspection of phenolic foam, anti-flame to prove that it is good, as much as emitted from the welding torch's flame at 3000 foam board, not two minutes later recorded a significant heat flu spread to the back plate, no high temperature thermal decomposition and smoke.

by: gaga

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