Fabrication of Ultrahigh‐Strength Polybenzimidazole Fibers via a Novel and Green Integrated Liquid Crystal Spinning Process,Macromolecular Materials and Engineering

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Fabrication of Ultrahigh‐Strength Polybenzimidazole Fibers via a Novel and Green Integrated Liquid Crystal Spinning Process
Macromolecular Materials and Engineering ( IF 4.2 ) Pub Date : 2020-02-17 , DOI: 10.1002/mame.201900717
Guohua Sun ₁ , Mengying Zhang ₂ , Nanjun Chen ₃ , Hongqing Niu ₁ , Shengli Qi ₁ , Dezhen Wu ₁

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Herein, the first example of ultrahigh‐strength polybenzimidazole (PBI) fibers using a PBI solution in liquid crystal state is reported via a novel and green integrated spinning technology. Microwave‐assisted polycondensation is utilized to synthesize the polybenzimidazole/polyphosphoric acid liquid crystal spinning solution and pure water is employed as the coagulating and washing bath to afford a green fabrication process. The green integrated spinning technology is eco‐friendly, cheap, and conducive for the large‐scale production of PBI fibers. The as‐prepared PBI fibers display superb flame retardancy, and the outstanding thermal stability of PBI fiber enables it to preserve structural integrity at temperatures as high as 600 °C. More significantly, it prepared the ultrahigh‐strength of PBI fiber up to 0.91 GPa, which is two times than that of the reported PBI fibers, marking a significant breakthrough for the high‐performance PBI fibers.

中文翻译：

通过新型绿色集成液晶纺丝工艺制备超高强度聚苯并咪唑纤维

在本文中，通过新型绿色环保纺丝技术报道了使用液晶状态下的PBI溶液的超高强度聚苯并咪唑（PBI）纤维的第一个示例。微波辅助缩聚反应合成了聚苯并咪唑/多磷酸液晶纺丝溶液，纯水用作凝结和清洗浴，从而实现了绿色制造工艺。绿色集成纺纱技术环保，廉价，有利于大规模生产PBI纤维。所制备的PBI纤维显示出极好的阻燃性，并且PBI纤维出色的热稳定性使其能够在高达600°C的温度下保持结构完整性。更重要的是，它制备了高达0.91 GPa的超高强度PBI纤维，

更新日期：2020-03-12

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