软木的热解特性和热动力学研究

软木是一种天然多孔性绿色材料,具有吸音减震、隔热保温、滞火阻燃、耐酸碱、不易老化、富有弹性、无毒无味等一系列优良特性。由于它所独具的各种特性,特别是软木的热学性能,使其在工业生产与人民日常生活中都有广泛的应用。本文通过热重分析仪来研究软木的热学性能,在实验温度从303~873K的范围内,对产自湖北和云南的2种软木的热解过程进行了分析。结果表明:软木热解过程分为4个阶段,热解过程与化学成分的热解过程相一致,513~693 K是试样热解的主要阶段。根据热分解速率方程,获得了软木的动力学参数——频率因子A和活化能E,最后得到软木的热解动力学方程。

Study on pyrogenation characteristics and thermodynamics of cork

Cork is a natural cellular material with various of excellent characteristics,such as the sound-absorbing and shock-absorption,the heat-insulation and heat-preservation,the fire-retardant,the acid and alkali resistance,the ageing resistance,the high resilience,the nonpoisonous and tasteless,and so on.Cork is widely used in the industrial production and people's daily life due to these excellent characteristics,especially its thermodynamics property.This paper uses the thermo-gravimetric analysis(TGA) to stu...