Makovicka Osvaldova Linda, Janigova Ivica, Rychly Jozef
Department of Fire Engineering, Faculty of Security Engineering, University of Zilina, 01026 Zilina, Slovakia.
Polymer Institute, Slovak Academy of Sciences, 84541 Bratislava, Slovakia.
Polymers (Basel). 2021 Feb 26;13(5):708. doi: 10.3390/polym13050708.
For selected tropical woods (Cumaru, Garapa, Ipe, Kempas, Merbau), a relationship was established between non-isothermal thermogravimetry runs and the wood weight loss under flame during cone calorimetry flammability testing. A correlation was found for the rate constants for decomposition of wood in air at 250 and 300 °C found from thermogravimetry and the total time of sample burning related to the initial mass. Non-isothermal thermogravimetry runs were assumed to be composed from 3 theoretical runs such as decomposition of wood into volatiles itself, oxidation of carbon residue, and the formation of ash. A fitting equation of three processes was proposed and the resulting theoretical lines match experimental lines.
对于选定的热带木材（香豆木、加拉帕木、紫心苏木、坎帕斯木、柚木），在锥形量热法燃烧性测试中，建立了非等温热重分析与木材在火焰下失重之间的关系。通过热重分析得出木材在250℃和300℃空气中分解的速率常数与样品燃烧总时间（与初始质量相关）之间存在相关性。非等温热重分析被假定由3个理论过程组成，如木材自身分解为挥发物、碳残渣的氧化以及灰分的形成。提出了这三个过程的拟合方程，所得理论曲线与实验曲线相符。
