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Temperature evaluated by ultrasonic technique during mixing process
Author(s) -
Cheng ChinChi,
Lu ChiHuang
Publication year - 2011
Publication title -
asia‐pacific journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.348
H-Index - 35
eISSN - 1932-2143
pISSN - 1932-2135
DOI - 10.1002/apj.628
Subject(s) - low density polyethylene , mixing (physics) , pellets , ultrasonic sensor , materials science , raw material , polyethylene , polymer , process (computing) , composite material , acoustics , computer science , chemistry , physics , organic chemistry , quantum mechanics , operating system
ABSTRACT Temperature in internal mixer has been evaluated by ultrasonic measurements during the mixing process of low density polyethylene (LDPE) pellets with CaCO 3 powder. The melting process of LDPE from solid pellets to polymer melt and the mixing progress of melted LDPE with CaCO 3 powder were diagnosed by temperature and ultrasonic signatures on‐line. The improved factor analysis was utilized to evaluate the relationship between temperature and ultrasonic parameters and rebuilt the temperature. The estimated temperature value had an agreement with the raw data within 4%. The presented ultrasonic technique and evaluating methodology might be an optional approach to diagnose the mixing process of polymer with powder in the internal mixer and evaluate the temperature on‐line. © 2011 Curtin University of Technology and John Wiley & Sons, Ltd.