Abstract
Pressure effect of steady shear viscosity for viscoelastic fluids during die extrusion flow has been analyzed and discussed. On the basis of simplified conditions, an expression for estimating the pressure coefficient ( β) has been proposed in the present article. The sensitivity of melt shear viscosity to pressure during the die extrusion flow of natural rubber (NR)/styrene–butadiene rubber (SBR) blend (a tread rubber), a low-density polyethylene (LDPE) and a polystyrene (PS), has been studied by using a capillary rheometer under testing conditions. The results show that values of β calculated using this equation based on the measured data from the samples are close to the values reported in literature. In addition, it is shown that β decreases with increasing extrusion flow rates and a rise in temperatures.
Sign-in/Register to access full text options 
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.
