摘要： 用锥形量热仪的方法研究了不同阻燃剂含量的饰面型防火涂料点燃时间、热释放速率、有效释放热及总烟气释放量等项目,结果表明:随着阻燃剂含量的增加,热释放速率、有效释放热等参数随之降低;此外,在市面上选取3种饰面型防火涂料,用大板法和锥形量热仪法进行了研究,结果表明:随着耐火极限的延长,有效释放热、热释放速率等参数数值明显减小,同理论分析一致。

关键词: 饰面型防火涂料, 锥形量热仪, 耐火极限

Abstract: Various, finishing fire retardant coatings with different content of flame retardant agent were examined with cone calorimeter according to the standard of ISO 5660: 1-2002. The results indicated that the flame retardant agent could play an important role in delaying TTI and TSP, the items such as HRR THR, EHC also decreased with the increase of the content of flame retardant agent. In addition, three kinds of finishing fire retardant coatings with obvious difference in duration of fire resistance were tested by cone calorimeter and big panel method according to GB 12441-2005. The results showed that the thickness and density of carbon layer increased with the increase of duration of fire resistance, but the parameters such as HRR, EHC decreased with the increase of duration of fire resistance, which agreed well with the theoretical analysis.

Key words: finishing fire retardant coating, cone calorimeter, duration of fire resistance