Continuous Carbon and Glass Fiber Reinforced Polypropylene: Optimization of the Compression Molding Process

摘要

The objective of this work was to optimize the processing conditions of polypropylene/carbon, PP/C, and polypropylene/glass, PP/G, composites, Investigation of the effects of molding parameters such as molding temeprature and residence time and cooling rate on the tensile performance of PP/C and PP/G was undertaken. It is well known that the mechanical performance of com posite base don thermoplastic matrix such as polypropylene is closely related to crystalline morphology which is dependent on the thermal history. Since the compression molding process involves kinetic behavior of systems undergoing phase transformations under non-isothermal conditions, the crystallization behavior of PP matrix inthe presence of carbonand glass fibers was investigated under non-isothermal conditions. The effects of processing temperature, residence time and cooling rate onthe crystallization temperature, degree of crystallinity, crystallization rate and kinetics of crystallization were analyzed.