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为快速评定钢结构防火涂料耐火性能,本文采用防火涂料背温(即背火面温度,以下同)检测装置,对多个厂家涂料进行检测。文章介绍了检测方法,得出相关结论。结果表明,较厚涂层生成的膨胀炭层质量较好,能抵御较长时间火焰的冲击,但受到自重的影响在测试火焰的持续冲击下,炭层的附着力逐渐变弱,最终使得炭层的传质传热变差;在10min背温到达300℃以内,曲线能进入升温平台区的钢结构涂料产品均能通过耐火时间的测试。
In order to quickly evaluate the fire resistance of steel structure fire-retardant coating, this paper uses the back-fire temperature of the fire-retardant coating (that is, the back-fire surface temperature, the same below) detection device to test the paint of multiple manufacturers. The article introduced the test method, draw the related conclusion. The results show that the thicker carbon layer produced by the thicker coating has better quality and can resist the impact of the flame for a long time, but is affected by self-weight. Under the continuous impact of the test flame, the adhesion of the carbon layer becomes weaker and finally the carbon Layer of mass and heat transfer worse; in 10min back temperature reached 300 ℃, the curve can enter the heating platform area steel coating products can pass the fire resistance test.