Since the main mechanism or heat transfer between fire and firefighter is radiation, therefore produce the second degree of burn in the firefighter, Ultraviolet Visible near Infrared (UV-vis-NIR) spectrophotometer was used, toperform the thermal radiation. Basalt and Glass fabric coated with aluminum foil and uncoated were used for comparison the thermal properties.
Chemicals bonding and molecular structure that cause higher thermal stability of basalt fiber were identified using FTIR, while low thermal degradation was performed using TGA. Significant improvement in reflection was observed in the fabrics after coating with aluminum foil. The main difference was in the surface roughness of the materials, also basalt revealed to be natural resistant to electromagnetic radiation.
FTIR result showed greater Q4Si-O molecular networking and chemical bonding for basalt fiber, thus higher thermal stability, because according to TGA results only 0.58% of mass was lost at elevated temperatures.(900oC) Thermal performance and characterization of basalt fiber in this investigation suggest that basalt fiber possess excellent thermal performance and stability at elevated temperature, with great potential for application in firefighter protective clothing.
Miguel Ángel Gallegos Lazcano¹, Yu Weidong²
¹Textile Materials & Technology Laboratory, Donghua University, Shanghai, 201620, (PEOPLE’S REPUBLIC OF CHINA)
²College of Garment & Art Design, Jiaxing University,Jiaxing, Zhejiang, 314001, (PEOPLE’S REPUBLIC OF CHINA)