科研之友
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摘要
Aging behavior of Vectran fiber exposed to ultraviolet (UV) radiation was investigated. Vectran fiber was subjected to UV-accelerated degradation environment. Tensile strength of Vectran fiber was determined at room temperature using a two-parameter Weibull distribution. The average tensile strength loss was 42.75% when the irradiation time reached 186 h. The surface morphology of the degraded fiber was examined using scanning electron microscopy (SEM) and atomic force microscopy (AFM). X-ray photoelectron spectroscopy (XPS) and 13C-NMR were used to provide a molecular characterization of fibers. SEM and AFM showed that UV exposure result in microvoids on the surface of fibers. The results of the XPS and 13C-NMR indicated that the UV radiation could lead to chain scission of fiber surface layer.
- 出版日期2012-5-15
- 单位哈尔滨工业大学
