Wool fabric was treated with silica sol and phosphorus doped silica sol by
sol-gel method in order to improve its thermal properties and flame
retardance. The thermal stability, combustion behavior, and smoke suppression
of the control and finished wool fabric were analyzed using thermogravimetric
analysis, limited oxygen index, micro combustion calorimeter, and smoke
chamber. The results showed that wool fabric treated by phosphorus doped
silica sol had excellent thermal properties and flame retardance with higher
final char residue and LOI value. Furthermore, heat release rate and smoke
density results indicated the safety performance of the treated wool fabric
on fire.
Synthesis, Characterization, Thermal Properties and Flame Retardance of Aromatic Polyimides Containing Halogen and Phosphorus Components