Rheological properties of wood polymer composites and their role in extrusion

1st International Conference on Rheology and Modeling of Materials

物理学;材料科学

Duretek, I.^1 ; Schuschnigg, S.^1 ; Gooneie, A.^1 ; Langecker, G.R.^1 ; Holzer, C.^1

Department of Polymer Engineering and Science, Montanuniversitaet Leoben, Leoben

8700, Austria^1

关键词: Different geometry;    High-pressure capillaries;    Rheological behaviour;    Rheological experiment;    Rheological property;    Wall slippage;    Wood plastic composite;    Wood polymer composites;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/602/1/012014/pdf
DOI  :  10.1088/1742-6596/602/1/012014

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The influence of the rheological behaviour of PP based wood plastic composites (WPC) has been investigated in this research by means of a high pressure capillary rheometer incorporating dies having different geometries. The rheological experiments were performed using slit and round dies. The influence of moisture content on the flow properties of the WPC has been investigated as well. It was observed that higher moisture contents lead to wall slippage effect. Furthermore, measured viscosity data have been used in flow simulation of an extrusion profile die. Also, the influence of different rheological models on the simulation results is demonstrated. This research work presents a theoretical and experimental study on the measurement and prediction of the die pressure in the extrusion process of wood-plastic composite (WPC).