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首页> 外文期刊>Polimery >Self-extinguishing low-nitrogen nitrocellulose based on synergistic effect of dimethyl methylphosphonate and long-chain chlorinated paraffin
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Self-extinguishing low-nitrogen nitrocellulose based on synergistic effect of dimethyl methylphosphonate and long-chain chlorinated paraffin

机译：基于二甲基磷酸二甲基膦酸酯和长链氯化石蜡的协同作用自熄低氮纤维素

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摘要

A series of flame retardant low-nitrogen nitrocelluloses (FR/NCs) containing different weight ratios of dimethyl methylphosphonate (DMMP) and long-chain chlorinated paraffin (CP) were directly prepared by blending method, and the burning behaviors, thermal and mechanical properties, pyrolysis process and char residues were investigated. The results showed that (DMMP/CP = 8/2)/NC at a total flame retardant loading of 17 wt % displayed the self-extinguishing behavior following a multiflame retardancy mechanism with synergistic effect that includes gas-phase effects, endothermic effects and slightly condensed-phase effects of flame retardancy. In addition, the tensile properties of the (DMMP/CP = 8/2)/NC revealed a synergistic plasticization effect, which could enhance the flexibility of NC. This new system provided a reference for improving a safety storage and widely application of NC in the future.
机译：通过混合方法直接制备含有不同重量比的二甲基膦酸盐（DMMP）和长链氯化石蜡（CP）的不同重量比的阻燃低氮硝酸纤维素（FR / NCs），以及燃烧的行为，热和机械性能， 研究了热解过程和炭残留物。 结果表明，（DMMP / CP = 8/2）/ NC在具有17wt％的总阻燃剂负载下显示出自灭火机制后的自灭火行为，其具有协同效应，包括气相效应，吸热效果和略微 阻燃性的凝聚相效应。 另外，（DMMP / CP = 8/2）/ NC的拉伸性质揭示了协同塑化效果，其可以增强NC的柔韧性。 这款新系统为将来提供了改进安全储存和广泛应用NC的参考。

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