阻燃剂
极限氧指数
可燃性
聚酰胺
亚乙基亚胺
材料科学
热稳定性
高分子化学
玻璃化转变
量热法
复合材料
热解
聚合物
化学
有机化学
烧焦
物理
热力学
作者
Mina Helmy,Jason Ullmann,David Adner,Tobias Otto,Anke Schadewald
摘要
Abstract A macromolecular halogen‐free flame retardant, poly(N‐[3‐oxopropylmethylphosphinate]ethyleneimine) (PN) has been developed. This material contains both phosphorus and nitrogen. A simple and scalable process for chemical synthesis on commercial scale is described. FTIR, 1 H and 31 P NMR spectroscopy were utilized for characterization. The compound has a glass transition temperature of 82°C and is thermally stable up to 330°C. Samples of polyamide 6 containing 1 to 10 wt% of PN were prepared in a kneader. The flammability of polyamide 6/PN blends was investigated using the UL 94 vertical fire test, limiting oxygen index measurements, cone calorimetry, and the glow wire test. Samples containing loadings of 1 wt% and 10 wt% PN have V‐2 and V‐0 ratings, respectively. Specimen containing polyamide 12/PN blends were prepared by extrusion and injection molding for mechanical characterization.
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