Author :
Zadhoush, ali,Allan, peter S.
Title of Article :
Development and appliction of shear controlled orientation technology
Title Of Periodical :
IRANIAN JOURNAL POLYMER SCIENCE AND TECHNOLOGY
Descriptors :
Extrusion,Injection,Moulding,Thermoplastics,Shear,Fibre orientation
Abstract :
The application of specified macroscopic shears during the solidification of polymer melts provides a route for the development of preferred orientation of polymer molecules and reinforcing fibres in solid polymer and polymer matrix composite extrudate and mouldings. shear controlled orientation technology (SCORTEC) also provides a route for the elimination of internal weld lines, sinking and other processing derects. The basic technology will be described with respect to microstructure control in moulding (SCORIM), in continuous extrusion (SCOREX), and a new method for the production of curvilinear extruded profile(SCORBEND). One example of (SCORTEC) is described in more detail and is based on the production of defect -free mouldings in glass fibre reinforced polypropylene containing an thick section remote from the feed gate.
