Hydrothermal aging behavior and effects on carbon fabric/polyphenylene sulfide composite

材料科学 成核 复合材料 热液循环 结晶度 结晶 复合数 差示扫描量热法 化学工程 热力学 物理 工程类 有机化学 化学
作者
Lei Yu,Kai Wang,Mingchen Sun,Ziqi Duan,Yan Zhao
出处
期刊:Polymer Composites [Wiley]
标识
DOI:10.1002/pc.27819
摘要

Abstract Carbon fabric/polyphenylene sulfide (CF/PPS) composite has been used in the aircraft industry, which might suffer moisture and high temperature in service, leading to degradation and even failure. Therefore, knowledge of hydrothermal aging behavior and effects is needed to ensure service life. This work explores the water diffusion behavior, crystallization, and interfacial properties of CF/PPS composite under hydrothermal aging in continuous 3 months and periodical cycles. Diffusion coefficients were calculated through the Fickian model, crystallization behaviors were measured through differential scanning calorimetry and polarized optical microscope, and interfacial properties were characterized by interfacial shear strength, and interlaminar shear strength. The results demonstrate the crystal morphology transforms from transverse crystals to spherulites at the CF/PPS interface after recrystallization through hydrothermal aging, revealing water has a significant impact on the nucleation performance of T300 carbon fiber in the PPS matrix. Hydrothermal aging affects the crystallinity and crystal morphology of CF/PPS composite after recrystallization, and impacts the micro and macro interfacial properties. Highlights Transverse crystals transform to spherulites at CF/PPS interface after water uptake. Water impacts on nucleation performance of T300 carbon fiber in PPS matrix. Hydrothermal aging effect can be accumulated and promotes water uptake. ILSS drop is related to water uptake content, crystallization and IFSS changes.
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