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首页> 外文期刊>Journal of Engineered Fibers and Fabrics >Tensile and interfacial properties of dry-jet wet-spun and wet-spun polyacrylonitrile-based carbon fibers at cryogenic condition
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Tensile and interfacial properties of dry-jet wet-spun and wet-spun polyacrylonitrile-based carbon fibers at cryogenic condition

机译：低温条件下干喷湿纺和湿纺聚丙烯腈基碳纤维的拉伸和界面性能

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摘要

For carbon fiber–reinforced polymer composites applied in aerospace industry, the mechanical performance of carbon fiber in extreme temperature environment is of great importance. In this study, carbon fiber produced by dry-jet wet spinning and wet spinning approaches were cryogenically conditioned at different cooling rates. After cryogenically conditioned at sharp cooling rate, both fibers have around 10% decreases in tensile strength due to the huge hoop stress induced by the quenching process. However, after cryogenically conditioned at slow cooling rate, the interfacial shear strength between the two kinds of carbon fibers and epoxy resin was significantly enhanced. Furthermore, scanning electron microscopy, atomic force microscopy, and the Raman spectroscopy were conducted to detect the micro-structures and surface morphologies of the cryogenically conditioned carbon fibers. This study provided fundamental data for the material design and application of the carbon fiber at extreme temperature environments such as aerospace or other industrial fields.
机译：对于航空航天工业中使用的碳纤维增强聚合物复合材料，碳纤维在极端温度环境下的机械性能至关重要。在这项研究中，通过干喷湿纺和湿纺方法生产的碳纤维在不同的冷却速率下进行了低温调节。在以急剧的冷却速度进行低温调节后，由于淬火过程中产生的巨大的环向应力，两种纤维的拉伸强度都会降低约10％。但是，在缓慢冷却后进行低温调节后，两种碳纤维与环氧树脂之间的界面剪切强度显着提高。此外，进行了扫描电子显微镜，原子力显微镜和拉曼光谱，以检测低温调节的碳纤维的微观结构和表面形态。这项研究为碳纤维在极端温度环境（例如航空航天或其他工业领域）中的材料设计和应用提供了基础数据。

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