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After entering the 21st century , with the rapid development of economic construction , steel structures is also more and more , however, steel structures appear in the application process , a lot of hidden dangers , such as fire , corrosion , strength and other issues . Steel low fire resistance and ease of erodibility are two main problems causing casualties and property losses . With people constantly enhance the awareness of fire safety of steel structure buildings , the use of fireproof coatings performance requirements are increasing and urgent need to use both a meet environmental requirements , decorative performance , convenient construction is ultra-thin a new type of fire-resistant coating . Currently , the production of fire-resistant coating has a certain scale , but in many fireproof paint manufacturers , fire retardant coating products also widespread problem , such as the lack of fire performance , prone to fall off, the poor as well as the quality of the decorative unstable , making it application subject to certain restrictions . In this paper, the ultra-thin fireproof coatings research and analysis, self-developed a new ultra-thin fireproof coatings , environmental protection and good decorative properties . Fire safety mechanism , a large number of test studies to determine the matrix resin, acrylic emulsion and chlorine partial emulsion consisting of ammonium polyphosphate , melamine and pentaerythritol intumescent flame retardant and flame retardant synergist for flame retardant system , and adding an appropriate amount of pigments and fillers , leveling agents , plasticizers, curing agents , additives mixed with water as the solvent prepared from . Investigated the fire resistance of fire-resistant coating the carbonized layer quality and the expansion ratio , and the ratio between the various components optimized by orthogonal design test . The results show that : the flame retardant effect of ammonium polyphosphate, pentaerythritol and melamine percentage of 5:2:3 were mixed , and the resulting aqueous slim type fireproof coatings , when the coating thickness is less than 2mm , the refractory time of up to 90min, significantly greater than 60min standard higher than the national standard . Also drawn to the flame retardant system, the most significant of the fire resistance of paint .
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