高温对PIR核心屋顶三明治板连接完整性的影响
Anita Pawlak-Jakubowska1, Paweł Krause1, Artur Miros2
1Faculty of Civil Engineering, Silesian University of Technology, 44-100 Gliwice, Poland.
Materials (Basel, Switzerland)
|January 10, 2026
概括
带有PIR泡芯的屋顶三明治板保持了绝热和耐火性,即使有轻微的关节解密. 短期的高温会造成最小的损坏,确保正确安装时的屋顶完整性.
科学领域:
- 建筑材料科学 建筑材料科学
- 热工程是指热工程的工程.
- 消防安全工程 消防安全工程
背景情况:
- 屋顶三明治板与聚酸酸 (PIR) 泡芯被广泛使用,因为它们的绝缘性能.
- 了解热应力下的关节行为对于保持建筑外性能至关重要.
- 高温可以损害面板接头的完整性和隔热.
研究的目的:
- 为了评估PIR泡核心屋顶三明治板在短期高温下关节的行为.
- 分析面板接头内的温度分布,并评估轻微解密对隔热的影响.
- 为了确定关节间隙对表面温度分布和整体热性能的影响.
主要方法:
- 使用热图进行实验分析,以捕捉表面温度分布.
- 使用有限元法 (FEM) 进行数值分析,以建模具有不同间隙大小的关节.
- 通过测量热传导率和热流密度来评估热性能.
主要成果:
- 轻微解除关节的密封 (大约. 3毫米) 对隔热的影响最小,温度差异低于1°C.
- 连接的FEM模型的间隙高达6.81毫米显示了0.187-0.196W/{m2·K}之间的热传导值.
- 短期暴露于100°C导致PIR泡融度微不足道 (~1毫米),接头符合绝缘和耐火性要求.
结论:
- 在PIR泡核心屋顶三明治板中的关节表现出对短期高温和轻微分离的弹性.
- 按照制造商的指导方针进行正确的安装是确保屋顶系统长期密封和耐热性的关键.
- 该研究证实了这些面板适用于在高温条件下需要隔热和耐火性能的应用.
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