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Poly(vinylidene fluoride) Reinforced by Carbon Fibers: Structural Parameters of Fibers and Fiber-Polymer Adhesion
作者:Jianghong Wang, Defeng Wu, Andrew Hrymak, Ming Zhang, Weidong Zhou
关键字:poly(vinylidene fluoride); carbon fiber; composites; structural parameters; interfacial tension
论文来源:期刊
具体来源:Applied Surface Science
发表时间:2012年

Applied Surface Science 258 (2012), pp. 9570-9578

ABSTRACT:

Poly(vinylidene fluoride) (PVDF) composites containing carbon fibers (CF) with or without surface treatment were prepared via melt mixing. The mechanical properties of the PVDF/CF composites were then studied, aiming at exploring the relations between the short-range and long-range structures of CF and the properties of the composites. The results show that the presence of CF has evident reinforcement effect on the PVDF and the Nielsen model can be well used to describe the concentration effect of CF especially at the lower concentration levels. The short-range aspect ratio structure and the long-range orientation one of the CF are the two most important structures to final properties of the composites. The effective aspect ratio and orientation degree of the CF in the PVDF matrix can be evaluated by the Halpin-Tsai and the Krenchel-COX models, which agree well with the experimental observations. After surface treatment, the CF shows stronger reinforcement effect due to reduced interfacial tension and increased interfacial area between two phases.

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http://www.sciencedirect.com/science/article/pii/S0169433212010069