Fire protection principle and composition of fire retardant coating for steel structure
The steel structure has the characteristics of high strength and lightweight, improved power and speed, is widely used in the construction industry, has excellent ductility and seismic resistance, construction time is short, and is increasingly used in building construction. However, the high-temperature resistance of the steel structure is not very good. In the case of fire, it takes only a quarter of an hour for the temperature of the steel structure will rise to more than 540 degrees. The high-temperature steel structure is easy to deform, thus causing trouble. Ultra-thin or thin steel structure fire retardant coating fire insulation principle is fire retardant coating layer in the fire swell foaming, forming foam, foam layer not only isolated oxygen, and because of its loose texture and excellent heat insulation function, can delay the speed of heat transfer to be protected substrate. According to the physical and chemical principle of analysis, the process of foam layer coating s...