不同膨胀型防火涂料烟毒性对比分析研究  

Comparative Analysis of Smoke Toxicity of Different Expansion Type Fireproof Coatings

作　　者：魏成龙 蔡宇武[1] 张文喜 覃况 李龙江 吴丹 Wei Chenglong;Cai Yuwu;Zhang Wenxi;Qin Kuang;Li Longjiang;Wu Dan(Jiangsu Product Quality Testing&Inspection Institute,Nanjing 210007,China)

机构地区：[1]江苏省产品质量监督检验研究院,南京210007

出　　处：《化工时刊》2024年第1期12-15,60,共5页Chemical Industry Times

基　　金：江苏省市场监督管理局科技项目(KJ196006)。

摘　　要：为研究膨胀型防火涂料在火灾时的烟毒性特征,采用NBS烟密度实验箱对6种膨胀型防火涂料进行实验室尺度火灾模拟实验,结合傅立叶红外(FTIR)分析系统对烟气中8种气体进行采样分析,采用常规毒性指数(CIT_(G))定量评价烟气毒性。结果表明:膨胀型防火涂料受热后产生的烟气主要组分为CO_(2)、CO、NO_(x)和HCN;环氧树脂基膨胀型防火涂料的毒性较其他树脂基的涂料大很多,4 min和8 min时NO_(x)气体质量浓度分别为108.43 mg·m^(-3)和136.47 mg·m^(-3),均大于基准浓度38 mg·m^(-3),8 min时的CITG值达到0.377。FITR气体分析方法可实现在线、多组分气体快速分析,但气体含量在检出限附近时干扰和误差较大。In order to study the smoke toxicity characteristics of expandable fireproof coatings during fires,a NBS smoke density test box was used to conduct laboratory scale fire simulation tests on 6 types of expandable fireproof coatings.FTIR analysis system was used to sample and analyze 8 types of gases,and the conventional toxicity index CIT_(G) was used to quantitatively evaluate the toxicity of flue gas.The results showed that the flue gas produced by the expandable fireproof coating contained CO_(2),CO,NO_(x)and HCN gases.The toxicity of epoxy resin based expandable fireproof coatings was much greater than that of other resin based coatings.The NO_(x)gas mass concentration at 4 min and 8 min was 108.43 mg·m^(-3)and 136.47 mg·m^(-3),respectively,which were higher than the reference concentration of 38 mg·m^(-3),and the CITG value reached 0.377 at 8 min.FITR gas analysis method can achieve online,multi-component gas rapid analysis,but there is significant interference and error in gas content near the detection limit.

关 键 词：膨胀型防火涂料 烟毒性 定量评价 常规毒性指数 

分 类 号：TQ637[化学工程—精细化工]