Thermal Stability Analysis of PA66 Non-woven Fabric for Building Flame Retardancy with HCCP Addition
In order to improve the safety and quality of flame-retardant materials for construction,polyamide 66/hexachlorocyclotriphosphazene(PA66/HCCP)non-woven fabric was prepared by melt spraying process,and its flame retardant and thermal stability properties were characterized.The research results indicate that the quality loss of PA6/HCCP occurs near the temperature of 306℃,with a weight loss percentage of 80%,which slightly decreases compared to single PA6.The thermal conductivity of PA6/HCCP non-woven fabric after flame retardant treatment is 0.071 W/(m·K),which can effectively prevent heat diffusion.After adding HCCP,the fibers formed an interwoven structure with good yarn forming effect,with an average particle size of 3.2 μm.The addition of HCCP resulted in slight changes in fiber particle size,forming a denser particle size distribution.This study contributes to improving the chemical properties of polymer materials in the field of building flame retardancy and enhancing their chemical combustion stability.
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