Steel structure is the main form of modern architecture, but the poor fire resistance of steel structure buildings is also very obvious. When the temperature exceeds 300 ℃, the yield point and ultimate strength of steel significantly decrease, and when the temperature reaches 600 ℃, the yield point and ultimate strength are almost zero. Therefore, fire prevention measures must be taken for steel structures and painting construction must be carried out. Next, I would like to introduce the key points of steel structure fireproof coating construction:

After the construction of Jiangxi Youlinsheng fireproof coating manufacturer is completed, the maintenance and upkeep of the fireproof coating should be done well. Newly sprayed coatings should avoid direct sunlight and rainwater. The coating will cure within 48-96 hours at room temperature. The storage temperature for coatings is between 4 and 40 degrees Celsius and should not be stored outdoors or in direct sunlight. The shelf life of fire-resistant coatings is generally six months. The steel structure fireproof coating exhibits a decrease in strength and creep under high temperature conditions. For construction steel, the strength remains unchanged below 260 ° C and begins to decrease between 260 ° C and 280 ° C; At 400 ° C, the yield disappears and the intensity significantly decreases; The intensity decreases between 450 ° C and 500 ° C. The internal recrystallization of steel rapidly reduces its strength, and as the temperature further increases, the load-bearing capacity of the steel structure will be lost. Creep can also occur at lower temperatures, but the higher the temperature, the more pronounced the creep. In recent years, steel structures that have not taken effective fire prevention measures have collapsed on a large scale in fires, causing accidents that result in casualties among building personnel and firefighting and rescue personnel. The lessons learned from these fire accidents indicate that if effective fire prevention measures are not taken, the fire performance of steel structures is poor. Therefore, when revising the regulations, provisions related to steel structural components (such as steel structures) can be removed from fire prevention measures.

The construction of fire-resistant coatings for steel structures generally adopts spraying, which is mostly applied to indoor steel structures with a fire resistance limit requirement of more than 2 hours. However, these products have relatively poor decorative appearance due to the thick coating. Steel structure fireproof coating does not expand during a fire, relying on the non flammability, low thermal conductivity, or heat absorption of the material in the coating to delay the heating of the steel and protect the steel components.

There are many types of fireproof coating manufacturers in Jiangxi Youlinsheng, and steel structure fireproof coating is one of them. Steel structure fireproof coating refers to coatings with a thickness of 8-50mm, and the fire resistance limit of this type of fireproof coating can reach 0.5-3h.

This type of fireproof coating uses suitable binders, combined with inorganic lightweight materials and reinforcing materials. Compared with other types of steel structure fireproof coatings, in addition to some advantages of water-soluble fireproof coatings, it is low-cost due to the fact that most additives are inorganic from the base material.

The fire protection technology for steel structures is a comprehensive technology that involves many aspects such as the production of chemical building materials, building fire design, and engineering construction applications. With the rapid development of steel structure buildings, the issue of fire protection technology has become increasingly prominent. According to the understanding of fireproof coating manufacturers, the traditional methods in the past were pouring concrete on the surface of steel structures, applying cement mortar, or wrapping with non combustible boards. Since the 1970s, foreign countries have adopted fireproof coating spraying to protect steel structures, replacing traditional measures and making significant technological advances.

With the development of the steel structure construction industry, tunnel fireproof coatings have been widely applied in engineering, achieving significant results in implementing relevant building design fire prevention regulations, improving the fire resistance limit of steel structures, and reducing fire losses. Jiangxi Youlinsheng Fireproof Coating Manufacturer