As a building material, wood has the characteristics of light weight, high strength, beautiful texture and good workability. Wood structure is favored by people in terms of safety, heat preservation, energy saving, environmental protection, comfort, structural flexibility and other factors. In recent years, in Beijing, Shanghai, Shenzhen and other large cities in China, the heat of wood structure housing has been raised. The complexity of building facilities, the increasing density of personnel and property, and the probability of fire are also increasing. Therefore, the fire protection function of buildings is also put forward higher requirements.
In recent years, around the fire occurred, the reason is not difficult to find, although the main body of modern building structure is not burning material, but the building is still there are a lot of flammable and combustible interior decoration materials and furniture, they are in danger of fire occurrence and spread factors, which caused a fire shocking. As early as 5000 years ago in ancient China, it has been used in fire protection method is coated outside the soil column, and later on the large wooden beams and columns, the cloth wrapped, then coated with clay, gypsum and other flammable substances of fire. In coastal areas, records of wood building lighthouses that are used for fire-resistant processing of sea water. The fire-retardant treatment of wood can be divided into 2 categories: one is the impregnation method of solvent type flame retardant, the other is the fire retardant coating of wood structure (also known as the veneer fire retardant coating).
The best way to fire and flame retardant is to paint the wood structure fire retardant coating with good performance, and the film expansion and foaming in fire form a homogeneous and compact honeycomb carbon layer. Reduce its combustion grade to nonflammable or flammable. Once a fire occurs, the fire can be prevented from spreading in a certain period of time. Wood structure fire retardant coating is made up of water as solvent, organic and inorganic composite as binder, high efficient flame retardant and auxiliary agent. The wood structure fireproofing coating is made up of environmental protection, decoration and fire protection. The coating is made of water as the dispersing medium. After drying, it has the advantages of smooth film, good fire resistance, innocuity, no pollution and convenient construction. Of course, the wood structure fire retardant coating is not perfect, water resistance and the amount of smoke need to be improved. With the rapid development of construction industry led by real estate, all kinds of high-rise buildings and entertainment establishments are developing to be more complex and high-grade. People's demand for decorative fireproof coatings is higher and higher, and their applications are also increasing.
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