effect of quenching temperature and filler rate on the mechanical thermal and physical properties of composites: polypropylene/calcium carbonate

Polypropylene (pp) is a strong, tough, crystalline thermoplastic material with high performance. because of its diverse thermo-physical and mechanical properties, it is utilized in a wide variety of disciplines. in this study, the impact of free quenching on the thermo-physical characteristics of pp/calcium carbonate (caco3) composites was examined. three distinct heating procedures were used. first, composites were cooled from their melting phase temperature to ambient temperature. second, composites were cooled from 130°c to a pre-determined and controlled temperature (t: 0°, 20°, 30°, 40°, 50°, 60°, 70°, 80°c). third, composites were temperature-tested using annealing. the findings suggest that the elongation-at-break and impact strength may be improved following an initial quenching process from the melting phase to ambient temperature. on the other hand, a second quenching process at 0°c produces superior results, and a correlation between mechanical and thermal characteristics is noted; however, while these qualities are increased, others, such as flexibility, density, vicat softening temperature (vst), and heat distortion temperature (hdt) are negatively impacted.