scholarly journals A novel experimental setup for characterization of polymer blends in single-screw extruders

2019 ◽  
Author(s):  
O. Celik ◽  
C. Bonten
Keyword(s):  
Polymer Blends ◽  
Experimental Setup ◽  
Single Screw ◽  
Single Screw Extruders ◽  
Screw Extruders

Investigation of Mixing Performance in the Extruder with Embedded Planetary-Screws

2013 ◽  
Vol 781-784 ◽  
pp. 2809-2816
Author(s):  
Liang He ◽  
Bai Ping Xu ◽  
Hui Wen Yu ◽  
Xiao Long Wang ◽  
Gang Xue
Keyword(s):  
The Novel ◽  
Screw Extruder ◽  
Mixing Performance ◽  
Single Screw ◽  
Single Screw Extruder ◽  
Laminar Mixing ◽  
Single Screw Extruders ◽  
Twin Screw ◽  
Screw Extruders

The novel geometrical configuration of embedded planetary-screws is proposed in the paper. The corresponding numerical simulation and the experimental investigation are carried out to characterize the mixing performance. Adopting commercial software FLUENT, the simplified physical model is presented with the boundary conditions imposed by UDF codes which are developed by us. Compared with the traditional single screw extruder, the flow and mixing are primarily investigated by using particle tracking technology. The sensitivity to initial positions is found in the novel screw configuration, which is caused by the periodic perturbation of planetary-screws. In contrast, the traditional laminar mixing occurs in single screw extruders. Compared with the traditional twin screw extruder, the experimental characterization of filled system of adding active nanometer CaCO3 into LLDPE matrix is conducted. No obvious difference in dispersion of CaCO3 is found when the extrusion samples are observed through scanning electron microscopy (SEM), on the condition that the both extrusion outputs are equal. The shear rate in the novel screw configuration is relatively smaller, and the extrusion characteristic is more excellent.

Melting of PP/PA6 Polymer Blends in Single Screw Extruders – An Experimental Study

2008 ◽  
Vol 587-588 ◽  
pp. 505-509 ◽  
Author(s):  
S.M. Cunha ◽  
António Gaspar-Cunha ◽  
José A. Covas
Keyword(s):  
Experimental Study ◽  
Polymer Blends ◽  
Polymer Blend ◽  
Screw Extruder ◽  
Immiscible Polymer Blend ◽  
Single Screw ◽  
Single Screw Extruder ◽  
Single Screw Extruders ◽  
Melting Mechanism ◽  
Screw Extruders

A prototype modular single screw extruder fitted with a screw extracting device is used to monitor melting of an immiscible polymer blend (PP/PA6, with different weight ratios) in this widely used processing equipment. As anticipated, the phenomena observed are much more complex than those involved in extruding PP or PA6, when the well known Maddock/Tadmor mechanism is valid. Consequently a hybrid melting mechanism, involving Maddock/Tadmor and Dispersive melting sequences, is proposed.

Dependence of solids conveying on screw axial vibration in single screw extruders

2006 ◽  
Vol 102 (3) ◽  
pp. 2998-3007 ◽  
Author(s):  
Qu Jinping ◽  
Shi Baoshan ◽  
Feng Yanhong ◽  
He Hezhi
Keyword(s):  
Axial Vibration ◽  
Single Screw ◽  
Single Screw Extruders ◽  
Screw Extruders
Sign in / Sign up

Export Citation Format

Share Document