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首页> 外文会议>International Conference on Industry, Information System and Material Engineering >Study of the Properties of Poly-p-phenylene-benzimidazole-terephthalamide Fiber Material
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Study of the Properties of Poly-p-phenylene-benzimidazole-terephthalamide Fiber Material

机译：聚对苯基 - 苯并咪唑 - 对苯甲酰胺纤维材料的性质研究

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摘要

The properties of the fiber material, which prepared from the high-performance heterocyclic polymer poly-p-phenylene-benzimidazole-terephthalamide (PBIA), were investigated. Poly-m-phenylene isophthalamide (PMIA) and poly-p-phenylene terephthalamide (PPTA) fibers were also studied, for comparison, under the same experimental conditions. Thermogravimetry(TG) and thermogravimetry coupled to Fourier transform infrared spectroscopy(TG-FTIR) were used to study the properties of these fibers. The results show that PBIA fiber has better tensile properties, thermal stability than that of PMIA and PPTA fibers. The onset degradation temperature of PBIA is the highest, namely 421°C in nitrogen. TG-FTIR provides information on the compositions of the pyrolyzates as well as their relationship to the structures of the polyamides. Analysis of the results indicates that a hydrolytic mechanism plays a leading role at lower temperature, and a homolytic mechanism is dominant at higher temperature.
机译：研究了由高效杂环聚合物聚 - 苯基 - 苯并咪唑 - 对苯丙胺（PBIA）制备的纤维材料的性质。在相同的实验条件下，还研究了聚-M-亚苯基苯二甲酰胺（PMIA）和聚对苯基对苯胺（PPTA）纤维（PPTA）纤维。耦合到傅里叶变换红外光谱（TG-FTIR）的热重呕血（Tg）和热重率用于研究这些纤维的性质。结果表明，PBIA纤维具有更好的拉伸性能，比PMIA和PPTA纤维的热稳定性。 PBIA的开始降解温度最高，即氮气中的421℃。 TG-FTIR提供有关热解的组合物的信息以及与聚酰胺结构的关系。结果分析表明，水解机制在较低温度下发挥着主导作用，并且在较高温度下均匀机理占主导地位。

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