Cyclotriphosphazene (CP) based porous organic polymers (POPs) have been designed and prepared. The introduction of CP into the porous skeleton endowed special thermal stability and outstanding flame retardancy to prepared polymers. The nonflammable level of PNK‐CMP fabricated via the condensation of 2,2′‐(1,4‐phenylene)diacetonitrile (DAN) and hexakis(4‐acetylphenoxy)cyclotriphosphazene (HACTP) through Knoevenagel reaction, in vertical burning tests reached V‐2 class (UL‐94) and the limiting oxygen index (LOI) reached 20.8 %. When used as additive, PNK‐CMP could suppress the dissolving out of PEPA effectively, reducing environment pollution and improving the flame retardant efficiency. The POP and PEPA co‐added PU (m_POP%: m_PEPA%=5.0 %: 5.0 %) could not be ignited under simulated real‐scale fire conditions. The nonflammable level of POP/PEPA/PU in vertical burning tests (UL‐94) reached V‐0 class with a LOI as high as 23.2 %. The smoke emission could also be suppressed, thus reducing the potential for flame spread and fire hazards. Furthermore, carbonization of PNK‐CMP under the activation of KOH yield a hyperporous carbon (PNKA‐800) with ultrahigh BET surface area (3001 m² g⁻¹) and ultramicropore size showing excellent ORR activity in alkaline conditions.

中文翻译：

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多孔有机聚合物作为耐火添加剂和超多孔碳氧还原反应的前体。

设计并制备了基于环三磷腈（CP）的多孔有机聚合物（POP）。将CP引入到多孔骨架中，赋予所制备的聚合物特殊的热稳定性和优异的阻燃性。由2,2′-(1,4-亚苯基)二乙腈(DAN)和六(4-乙酰基苯氧基)环三磷腈(HACTP)通过Knoevenagel反应缩合制备的PNK-CMP在垂直燃烧试验中达到V- 2级（UL-94），极限氧指数（LOI）达到20.8%。PNK-CMP作为添加剂使用时，可以有效抑制PEPA的溶出，减少环境污染，提高阻燃效率。POP和PEPA共同添加的PU（m _POP %：m _PEPA %=5.0 %：5.0 %）在模拟真实火灾条件下无法点燃。POP/PEPA/PU在垂直燃烧测试（UL-94）中的不燃水平达到V-0级，LOI高达23.2%。烟雾排放也可以被抑制，从而减少火焰蔓延和火灾危险的可能性。此外，PNK-CMP在KOH活化下碳化产生具有超高BET表面积（3001 m ²  g ^-1）和超微孔尺寸的超孔碳（PNKA-800），在碱性条件下表现出优异的ORR活性。