A Mathematical Model for Continuous Fiber Reinforced Thermoplastic Composite in Melt Impregnation

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Journal Article
Applied Composite Materials, 2017, 24 (3), pp. 675 - 690
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© 2016, Springer Science+Business Media Dordrecht. Through the combination of Reynolds equation and Darcy’s law, a mathematical model was established to calculate the pressure distribution in wedge area, which contributed to the forecast effect of processing parameters on impregnation degree of the fiber bundle. The experiments were conducted to verify the capacity of the proposed model with satisfactory results, which means that the model is effective in predicting the influence of processing parameters on impregnation. From the mathematical model, it was known that the impregnation degree of the fiber bundle would be improved by increasing the processing temperature, number and radius of pins, or decreasing the pulling speed and the center distance of pins, which provided a possible solution to the difficulty of melt with high viscosity in melt impregnation and optimization of impregnation processing.
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