Water-based super-thin steel structure fire-retardant coating

Abstract

The invention discloses a water-based super-thin steel structure fire-retardant coating. The water-based super-thin steel structure fire-retardant coating is characterized by being prepared from, by weight, 25-30% of ammonium polyphosphate, 6-10% of melamine, 8-11% of pentaerythritol, 7-9% of titanium dioxide, 5-6% of zinc borate, 2-3% of talcum powder, 20-22% of acrylic resin and the balance water. By the adoption of the water-based super-thin steel structure fire-retardant coating, the fire endurance of a steel structure can be improved, a coating film which is 2 mm thick can resist fire for 2 h, construction is convenient, and cost is low.

Description

technical field [0001] The invention relates to the field of coatings, in particular to a water-based ultra-thin fireproof coating for steel structures. Background technique [0002] With the rapid development of my country's economic construction, a large number of steel structure buildings appear in public buildings, commercial buildings and other high-rise buildings and industrial buildings. Steel has good tensile strength, but as the temperature rises, especially when the temperature reaches 400-600°C, its strength drops almost linearly, and when the temperature reaches above 600°C, the steel almost loses its bearing capacity. Therefore, it is very important to take effective protection measures for the steel structure so that it can avoid the direct burning of high-temperature flames in the event of an accident, delay the collapse time, and provide precious time for fire rescue. At present, countries around the world have adopted a variety of methods for fire protectio...

AI Technical Summary

Problems solved by technology

At present, countries around the world have adopted a variety of methods for fire protection of steel structures, mainly including pasting inorganic fireproof boards on the surface of steel structures, spraying inorganic fiberboards, pasting fiberboards, pasting flexible boards and passing water inside the structure, but the construction is often more complicated , the cost is higher, and it will affect the appearance

However, the current general-purpose fire-resistant coatings often require a coating thickness of more than 5mm to achieve a good fire-proof effect, which requires repeated spraying, which is labor-intensive and material-intensive.

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