Year-end Sale % OFF 
Abstract
Die-swell is an important parameter for characterization of elastic properties during extrusion of polymeric melts, and the degree of swell is usually expressed by die-swell ratio ( B). The swell ratio for polypropylene composites filled with diatomite with different particle sizes (volume fraction of 10%) was measured by means of a melt flow rate instrument to investigate the effects of die geometry and extrusion conditions on the die-swell behavior of the composite melts with temperature varying from 210 to 230 °C and load varying from 5 to 12.5 kg. The results showed that B of the composites increased nonlinearly with increase of shear stress and shear rate, while it decreased linearly with rise of temperature. When load and temperature were constant, B increased nonlinearly with increase of the die diameter, whereas it reduced nonlinearly with increase of the die length/diameter ratio.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
