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选择具有代表性的聚甲醛丙烯酸甲脂和松木两种材料 ,采用基于耗氧原理的燃烧热释放速率测量方法 ,在不同的外加热流密度作用下利用锥型量热计系统对固体可燃物的热释放速率进行测量 ;分析了外加热流密度对固体可燃物热释放速率、燃烧产物中CO2 的浓度和烟气的温度的影响 ;发现固体可燃物的燃烧放热过程与它们本身的结构特性密切相关 ,外加热流密度对固体可燃物的热释放速率有很大的影响
Two representative materials of polyacetal, acrylic acid and pine were selected, and the combustion heat release rate was measured based on oxygen consumption principle. The pyrolysis calorimeter system was used to measure the heat of solid combustibles under different external heat fluxes. The effects of heat fluxes on the heat release rate of solid combustibles, the concentration of CO2 in the combustion products and the flue gas temperature were analyzed. It was found that the combustion and exothermic processes of solid combustibles were closely related to their own structural properties. The applied heat flux has a great effect on the heat release rate of the solid combustibles