对回收碎片板的选择性防火性能进行评估
Zuzana Vidholdová1, Martin Zachar2, Ján Iždinský1
1Department of Wood Technology, Faculty of Wood Sciences and Technology, Technical University in Zvolen, Masaryka 24, 96001 Zvolen, Slovakia.
Polymers
|April 28, 2025
概括
颗粒板的防火性能因成分而异. 回收或退化的木质颗粒板比声音松树更快地点燃,燃烧更强烈,影响耐火性.
科学领域:
- 材料科学 材料科学 材料科学
- 消防安全工程 消防安全工程
- 木材复合材料 木材复合材料
背景情况:
- 颗粒板 (PB) 是一种广泛使用的木材复合材料.
- 评估由各种材料制成的PB的防火性能对于安全至关重要.
- 了解回收和退化木材的含量如何影响消防性能至关重要.
研究的目的:
- 综合评估各种类型的碎片板的防火性能.
- 为了比较 PBs 的点火时间,燃烧速率和质量损失,这些 PBs 是由健全的杉木,退化木材和回收材料制成的.
- 调查材料组成和添加剂对PB火灾行为的影响.
主要方法:
- 实验室制造的密度为587至654公斤·米3的颗粒板进行了测试.
- 测量了包括点火时间,燃烧速度和质量损失在内的火特性.
- 碎片板组合包括健全的杉木,退化的木材 (棕色/白色腐烂) 和回收材料 (木板,托盘,热修饰木材,原料/层状木板).
主要成果:
- 来自声音杉的PBs具有最长的点火时间 (103 ± 4.89秒).
- 回收或降解的PBs点燃速度更快,并表现出更高的最大燃烧率 (高达0.214%·s-1),特别是那些含有回收原始PB或棕色腐烂降解颗粒的PBs.
- 与对照PBs (44.89%) 相比,在含有回收或降解颗粒的PBs中,质量损失更大 (47.52%51.71%).
结论:
- 材料成分显著影响碎片板的防火性能.
- 在PB中使用回收或退化的木材通常会导致阻燃性降低.
- 粘合剂和层状材料等添加剂在修改燃烧行为和火特性方面发挥着作用.
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