Pressure-dependent viscosity of powder injection moulding compounds |
| |
Authors: | Berenika Hausnerova Tomas Sedlacek Radek Slezak Petr Saha |
| |
Institution: | (1) Faculty of Technology, Polymer Centre, Tomas Bata University in Zlín, TGM 275, 762 72 Zlín, Czech Republic |
| |
Abstract: | A single piston capillary rheometer was modified by the addition of a second chamber with a restricting valve (developed at
the Polymer Centre, Zlín, Czech Republic), which provides backpressure and increasing the pressure in the melted material
during the flow through the die. The Carreau–Yasuda model was employed to fit the measured viscosity data and determine the
temperature and pressure coefficients for polyolefin based binder and its compounds with carbide powder. Both temperature
and pressure sensitivity coefficients are largely dependent on the structure of a polymer, which should be taken into account
for binder-formation’s development. Increasing the loading level of the powder in the compound diminishes the pressure sensitivity
of their flow properties. |
| |
Keywords: | Pressure-dependent viscosity Temperature and pressure coefficients Modified capillary rheometer PIM technology |
本文献已被 SpringerLink 等数据库收录! |
|