基于锥形量热仪的几种防火布燃烧性能研究

摘要

生产企业常在电缆或者贵重高危机器处设置防火布来保护生产设备设施的消防安全,选取五种常用的防火布:石棉纤维防火布、陶瓷纤维防火布、硅胶防火布、涂胶防火布、碳素纤维防火布,通过锥形量热仪实验研究不同辐射强度对防火布燃烧性能的影响.结果表明:点燃时间的均方根倒数与辐射强度之间呈现线性关系;在 35 kW/m2辐射强度工况下,碳素纤维防火布的热释放速率最大,达到 272.59 kW/m2,有效燃烧热的峰值也最大,达到529.52 kJ/g;综合比较各样品的燃烧性能,防火能力强弱顺序为:硅胶防火布＞石棉纤维防火布＞陶瓷纤维防火布＞碳素纤维防火布＞涂胶防火布.%In this work,the influence of radiation power on the combustion performance of several kinds of fireproof fabric was studied by using cone calorimetry.Five kinds of fireproof fabric samples (asbestos fiber fireproof fabric,ceramic fiber fireproof fabric,silicone fireproof fabric,glue fire fabric and carbon fiber fireproof fabric)were used for tests.The results show that there is a linear relationship between the reciprocal of the root mean square of the ignition time with the radiation intensity. With the radiation power of 35 kW/m2,the heat release rate and peak value of the effective combustion heat of the carbon fiber fire fabric were the highest among the samples.The fire resistance ability is ordered as silicone fireproof fabric＞ asbestos fiber fireproof fabric ＞ ceramic fiber fireproof fabric ＞carbon fiber fireproof fabric＞ glue fire fabric.