Abstract In order to identify suitable flame retardant additives for the eco-friendly polymer cellulose acetate (CA), high-melting derivatives of the known flame retardant 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) were combined with the thermoplastic CA and the combustion properties were tested. CA mixtures with bis-phosphonamidates (EDA-DOPO and PIP-DOPO) showed distinct flame retardation effects and a reduction of peak heat release rates (PHRR) by up to 18%. CA mixtures with MDOP, a melamine salt of DOPA (an oxidation product of DOPO), also showed considerable effects and a reduction of PHRR by up to 27%. While producing more smoke than pure CA and CA plus melamine, owing to its aromatic component, MDOP was superior to the CA mixtures with DOPO, EDA-DOPO and PIP-DOPO in this regard. The mixture of CA with melamine gave rise to a distinctly reduced formation of toxic CO and smoke when compared with pure CA. Thus, these additives can be considered for future applications of CA-based polymers with enhanced flame protection.

中文翻译：

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生物塑料醋酸纤维素中三聚氰胺和 DOPO 衍生阻燃剂的研究

摘要 为了确定适合环保聚合物醋酸纤维素 (CA) 的阻燃添加剂，已知阻燃剂 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) 的高熔点衍生物与热塑性 CA 相结合，并测试了燃烧性能。CA 与双膦酰胺酸酯（EDA-DOPO 和 PIP-DOPO）混合物显示出明显的阻燃效果，并且峰值热释放率 (PHRR) 降低了 18%。CA 与 MDOP（一种 DOPA 的三聚氰胺盐）（DOPO 的氧化产物）的混合物也显示出显着的效果，并将 PHRR 降低高达 27%。虽然比纯 CA 和 CA 加三聚氰胺产生更多的烟雾，但由于其芳香成分，MDOP 在这方面优于 CA 与 DOPO、EDA-DOPO 和 PIP-DOPO 的混合物。与纯 CA 相比，CA 与三聚氰胺的混合物明显减少了有毒 CO 和烟雾的形成。因此，可以考虑将这些添加剂用于具有增强阻燃性的 CA 基聚合物的未来应用。