Mechanical behavior of fibers and films based on PP/quartz composites

A. GRECO; E. PEREZ; C. BERNAL; C. BERNAL; A. MAFFEZZOLI; C. J. PÉREZ; A. MAFFEZZOLI; C. J. PÉREZ; A. GRECO; E. PEREZ

POLYMER COMPOSITES

JOHN WILEY & SONS INC

Lugar: New York; Año: 2017 vol. 38 p. 1631 - 1639

0272-8397

In this work, films and fibers of Polypropylene basedcomposites reinforced with quartz were investigated. The materials were processedin a twin screw extruder with filler contents of 1, 2.5, 5 wt.%. Morphology,thermal properties and mechanical behavior of these materials were studied. A homogeneous filler dispersionand particle alignment in the extrusion direction was detected for the films. Thermogramsdisplayed a marginal nucleating effect of quartz particles. Uniaxial tensiletests indicated a high ductility level and strain hardening for the compositesprocessed as films (in the extrusion direction). Single fiber tests displayedimproved tensile properties compared to the same materials produced as films. Quasi-staticfracture tests showed a completely ductile behavior for the films in theextrusion direction. In addition, films fracture toughness was found toincrease with filler content.