HCCP添加下建筑阻燃用PA66无纺布热稳定性分析

Thermal Stability Analysis of PA66 Non-woven Fabric for Building Flame Retardancy with HCCP Addition

为了提高建筑用阻燃材料的安全质量,选择熔喷工艺制备聚酰胺66/六氯环三磷腈(PA66/HCCP)无纺布,并对其阻燃和热稳定性性能进行了表征。研究结果表明:PA6/HCCP质量损失出现于306℃温度附近,质量损失百分比为80%,与单一PA6相比发生了略微下降。经阻燃处理后的PA6/HCCP非织造织物导热系数为0.071 W/(m·K),能有效地阻止热量扩散。加入HCCP后,纤维形成了交织缠绕结构,具备较好成纱效果,平均粒径为3.2μm,HCCP加入导致纤维粒径微小变化,形成了更加密集的粒径分布结果。该研究有助于提高对建筑阻燃领域高分子材料的化学性能,有助于提高化学燃烧稳定性。

In order to improve the safety and quality of flame-retardant materials for construction,polyamide66/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.