The pursuit of highly efficient phosphorous flame retardants for polymer-matrix composites is of great sense in industrial and academic community. In the contribution, a phosphorous-phosphorous (P-P) synergy between structurally well-defined phosphonium sulfonates (PhS) and triphenyl phosphate (TPP) or bisphenol A bis (diphenyl phosphate) (BDP) was specifically revealed in PC/ABS alloy. Compared with TPP and BDP loadings of respective 14 wt% and 12 wt% to pass UL-94 V-0, the mere 8 wt% FRs was required via an exceptional synergy of 2% allyl-substituted PhS and 6 wt% TPP (or BDP). In parallel, the studied P-P synergy reduced heat release rate and total heat release significantly. Deep mechanism analysis by solid NMR and Py/GC-MS unveiled a concurrent optimization of condensed-phase and vapor-phase effect. Additionally, the multifunctional reinforcement of tensile property, thermal resistance and hydrolytic resistance was sysmatically investigated. In perspective, the P-P synergy between structurally tailored PhSs and phosphates exploits a pathway for highly efficiently fire-safe polymers.

在工业和学术界，追求用于聚合物基复合材料的高效磷阻燃剂具有重要意义。在贡献中，在PC / ABS合金中特别揭示了结构明确的磺酸phospho（PhS）和磷酸三苯酯（TPP）或双酚A双（磷酸二苯酯）（BDP）之间的磷-磷（PP）协同作用。与要通过UL-94 V-0的TPP和BDP负载分别为14 wt％和12 wt％相比，通过2％烯丙基取代的PhS和6 wt％TPP的特殊协同作用，仅需要8 wt％FRs BDP）。同时，研究的PP协同作用显着降低了放热速率和总放热。通过固体NMR和Py / GC-MS进行的深入机理分析揭示了冷凝相和气相效应的同时优化。另外，系统地研究了多功能复合材料的拉伸性能，耐热性和耐水解性。从角度看，结构定制的PhS和磷酸盐之间的PP协同作用为高效防火聚合物提供了一种途径。