publication . Article . Other literature type . 2014

Real-time diagnosing polymer extruding behaviour during rheometer processing(II)

Zhao, L.; Zhong, Q.; Hongjun Zhuang; Sun, Z.;
Closed Access
  • Published: 01 Jan 2014
  • Country: Canada
Ultrasonic, temperature and pressure sensors were combined together to be used in a slit rheometer to investigate the relationship between ultrasound signals with the rheological properties of PP and PS in processing. It is found that ultrasonic signals can represent monotone changes of polymer relaxation for different polymers under different processing conditions, and it also can indicate the shear thinning of polymer melting. Under the certain processing condition, there is an exponential relationship between ultrasonic signals with the viscosity of polymers, while the former factor and index number increase with the temperature increasing. Maxwell equations ...
free text keywords: In-line diagnosis, Maxwell equations, Rheology, Ultrasound
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