Investigation of melting mechanism in a twin-screw extruder using a pulse method and on-line measurement

TY - CONF

T1 - Investigation of melting mechanism in a twin-screw extruder using a pulse method and on-line measurement

AU - Chen, Hongbing

AU - Sundararaj, Uttandaraman

AU - Nandakumar, Krishnaswamy

AU - Wetzel, Mark D.

PY - 2004

Y1 - 2004

N2 - A perturbation method was introduced to investigate the melting phenomena of polystyrene (PS) and polypropylene (PP) blend in a twin-screw extruder. A sliding barrel technique was used to realize the on-line visualization of the processes and to obtain the temperature and pressure profiles along the extrusion region. The melting behavior of PS/PP (80:20) blend was studied under various ratios of the flow rate (Q) over the screw rpm (N). It was found that the melting processes of the PS/PP blend in the TSE can be divided into three sections. Most of the melting occurred in a narrow transition from the partially filled region to the fully filled region. No large deformation of solid polymer pellets was found for all the processes studied here. The relative amount of solid concentration in the flow can be obtained through this perturbation method. It was shown that the solid concentration at the beginning of the fully filled region increased as the ratio of Q/N increased.

AB - A perturbation method was introduced to investigate the melting phenomena of polystyrene (PS) and polypropylene (PP) blend in a twin-screw extruder. A sliding barrel technique was used to realize the on-line visualization of the processes and to obtain the temperature and pressure profiles along the extrusion region. The melting behavior of PS/PP (80:20) blend was studied under various ratios of the flow rate (Q) over the screw rpm (N). It was found that the melting processes of the PS/PP blend in the TSE can be divided into three sections. Most of the melting occurred in a narrow transition from the partially filled region to the fully filled region. No large deformation of solid polymer pellets was found for all the processes studied here. The relative amount of solid concentration in the flow can be obtained through this perturbation method. It was shown that the solid concentration at the beginning of the fully filled region increased as the ratio of Q/N increased.

KW - Melting

KW - On-line visualization

KW - Perturbation

KW - Twin-screw extrusion

UR - http://www.scopus.com/inward/record.url?scp=2442441875&partnerID=8YFLogxK

M3 - 论文

AN - SCOPUS:2442441875

SP - 122

EP - 127

T2 - ANTEC 2004 - Annual Technical Conference Proceedings

Y2 - 16 May 2004 through 20 May 2004

ER -