Polypropylene composites reinforced with continuous and unidirectional polyester fibers were prepared by the powder method. Three different polyester fibers with different mechanical properties were used. The composite mechanical properties showed a clear influence from the synergistic combination of the fiber properties and the material’s unidirectionality. The impregnation process based on a polypropylene powder cloud was studied, and a method to prepare composites was designed. In general, the powder method showed high compatibility leading to high-quality unidirectional composites.
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