Paint knowledge | how long can fire retardant coatings for steel structures be used

Core tip: in the application of fire retardant coating for steel structure, the problem of cost performance is often encountered After all, it is better to use thick or ultra-thin fire retardant coating for steel structure (now most of them are not suitable for thin fire retardant coating for steel structure) At present, the national fire code does not specify the use of thick type and ultra-thin type, only specifies the fire resistance rating, which is determined by the design unit according to the code However, there are quite a few design specifications, and it is not required to use thick type and ultra-thin type, only indicating the fire resistance rating Generally speaking, the thick fire retardant coating bears heavy load, while the ultra-thin fire retardant coating bears light load Only when the coating is selected, comprehensive evaluation is needed to determine the difference between thick and thin At present, the market is about electric power Paint knowledge how about Akzo Nobel Powder Coating Recommended introduction: powder coating is a kind of coating with different form from general coating, which is in powder form It is a new type of coating, because of its own advantages and more and more known by people Let's introduce Akzo Nobel Powder coating Akzo Nobel Powder coating is a cost-effective coating solution, which can be applied to different kinds of products After the treatment of static electricity and fire baking, a tough and durable coating surface will be formed, with the least impact on the environment Since the introduction of this technology, powder coating has been able to continue to maintain the Coating home news: steel structure fireproof coating application, often encounter cost-effective problems After all, it is better to use thick or ultra-thin fire retardant coating for steel structure (now most of them are not suitable for thin fire retardant coating for steel structure) At present, the national fire code does not specify the use of thick type and ultra-thin type, only specifies the fire resistance rating, which is determined by the design unit according to the code However, there are quite a few design specifications, and it is not required to use thick type and ultra-thin type, only indicating the fire resistance rating Generally speaking, the thick fire retardant coating bears heavy load, while the ultra-thin fire retardant coating bears light load Only when the coating is selected, comprehensive evaluation is needed to determine the difference between thick and thin At present, the market is generally in electric power, petrochemical and other enterprises and stadium steel structure The common situation is that thick fire retardant coating is used for steel column, ultra-thin fire retardant coating is used for beam and outer eave structure, and thick fire retardant coating is used for frame structure of high-rise civil buildings, while ultra-thin fire retardant coating is used for outer eave decorative steel structure In the application of fire-resistant coatings for steel structures, when fire-resistant coatings are selected according to the fire-resistant performance, ultra-thin fire-resistant coatings are generally selected within 2 hours of fire-resistant performance, and thick fire-resistant coatings for steel structures are generally required by relevant fire departments for more than 2 hours There is a mistake in application In some enterprises, the test report of ultra-thin steel structure fire retardant coating is about 2 hours, and the actual engineering design requires 2.5-3 hours of steel structure fire retardant coating It is also proposed to use the ultra-thin steel structure fire retardant coating with 2 hours of fire endurance to increase the thickness to reach the requirement of 2.5-3 hours This is an incorrect technical concept, and the fire resistance performance depends on the optimal proportion of refractory materials in the fire retardant coating Generally, if the fire resistance period exceeds 2 hours, thick fire retardant coating should be used In the selection of domestic fire-retardant coating, the price of coating is determined by the thickness tested by the manufacturer Of course, if the amount of coating thickness is small, the price of coating will be low Taking the ultra-thin 2-hour fire resistance limit as an example, the thickness is about 2 mm, and the coating consumption per square meter (theoretical value) is 3-3.2 kg / square meter However, at present, in some domestic enterprises, the 2-hour thickness is 1.7 mm, and the coating consumption is about 2.8 kg / square meter, which has reached the advanced level of the same kind of products abroad Home of coatings is specialized in coatings, diatom mud, paint coating, coating technology, fire retardant coating news and coating, diatom mud, paint coating, coating technology, fire retardant coating decoration knowledge and decoration renderings,