Rheology of Filled Plastics and Wood Plastic Composites

Rheology of Filled Plastics and Wood-Plastic Composites There are very few data published on rheology of filled plastics or multicomponent plastic-based composite materials. Most of them, in addition to those cited above, are related to long glass or graphite fiber-filled plastic [17-20]. 

The above references mainly describe rheological behavior of graphite fiber (length 0.5-16 cm) in poly-ether-ketone-ketone (PEKK) at 370°C. Anthors conclnde that the transient and steady-state rheological properties of these materials are different from the unfilled melt. 

TABLE 17.6 Effect of filler and additives in HDPE (MEI 0.48 g/10 min) on the consistency index (j/o) [zero viscosity] and power-law index (n) determined in the parallel plate (dynamic shear) rheometer 

Filled with 70% rice hulls Filled with 60% rice hulls Same plus 1% coupling agent Same plus 1% lubricant Same plus 1% coupling agent plus 1% lubrient 

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