Study of Rheological Behavior of Calcium Carbonate Filled Polypropylene in Dynamic Extrusion

Quan Wang; Xiao Sun; Zheng Huan Wu

doi:10.4028/www.scientific.net/AMR.1053.231

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 1053Study of Rheological Behavior of Calcium Carbonate...

Study of Rheological Behavior of Calcium Carbonate Filled Polypropylene in Dynamic Extrusion

Abstract:

A novel rheological measuring apparatus was designed, which introduced an additional sinusoidal vibration in parallel on the extruding direction of polymer melt in this paper. Melt rheology of polypropylene filled CaCO₃ particles in various amounts of filler (i.e. with 3 and 20 wt%) during capillary melt-extrusion were investigated respectively. The effects of vibration parameters on rheological behaviors were studied. Compared with the steady extrusion, the apparent viscosity of filled system decreased remarkably with the increase of vibration frequency and amplitude. The apparent viscosity reached to the minimum value as vibration frequency was about 8 Hz. When the filled percentage of CaCO₃ was low, the response of apparent viscosity will be more distinct with the increasing vibration parameters.

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Periodical:

Advanced Materials Research (Volume 1053)

Pages:

231-234

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1053.231

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Online since:

October 2014

Authors:

Quan Wang*, Xiao Sun, Zheng Huan Wu

Keywords:

Calcium Carbonate, Dynamic Extrusion, Melt Extrusion, Polypropylene (PP), Rheological Behavior

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