软质聚氨酯泡沫燃烧特性及参数敏感性  

Combustion Characteristics and Parameter Sensitivity of Flexible Polyurethane Foam

作　　者：黄梦真 朱虹 刘乃安[1] 谢小冬 马超 张首蕤 HUANG Mengzhen;ZHU Hong;LIU Naian;XIE Xiaodong;MA Chao;ZHANG Shourui(State Key Laboratory of Fire Science,University of Science and Technology of China,Hefei 230026,China)

机构地区：[1]中国科学技术大学火灾科学国家重点实验室,合肥230026

出　　处：《工程热物理学报》2024年第2期588-596,共9页Journal of Engineering Thermophysics

基　　金：国家自然科学基金(No.51936011,No.41961144012);中国博士后科学基金(No.2021M703083);国家重点研发计划(No.2022YEC3003000)。

摘　　要：本研究基于火焰蔓延量热仪(FPA),在不同辐射热流及样品厚度条件下,开展软质聚氨酯泡沫(FPUF)燃烧特性实验研究。结果表明,FPUF燃烧可分为三个阶段:阶段一主要为FPUF热解与甲苯二异氰酸酯(TDI)燃烧,阶段二主要为多元醇燃烧,阶段三主要为焦炭氧化。基于Box-Behnken设计方法建立质量响应模型,方差分析结果表明,模型对单个参数敏感性为:样品底面温度>辐射热流>样品厚度;多个参数敏感性为:样品底面温度×样品厚度>样品底面温度的平方>样品厚度的平方。The flexible polyurethane foam(FPUF)combustion is studied by fire propagation ap-paratus(FPA)with different radiant heat fluxes and sample thicknesses.The results show that FPUF combustion can be divided into three stages:the first stage is mainly FPUF pyrolysis and toluene diisocyanate(TDI)combustion,the second stage mainly polyol combustion,and the third stage mainly char oxidation.A mass response model is established by the Box-Behnken design method.The results of variance analysis show that the sensitivity of the mass model to the single parameter is:sample bottom temperature>radiant heat flux>sample thickness;and the sensitivity of the mass model to the combined effects of multiple parameters is:sample bot-tom temperature×sample thickness>sample bottom temperature squared>sample thickness squared.

关 键 词：软质聚氨酯泡沫 热解 燃烧 敏感性分析 火焰蔓延量热仪 

分 类 号：X932[环境科学与工程—安全科学]