Rheological properties of low consistency TMP from thinning wood of Chinese fir

The rheological behavior of low consistency thermomechanical pulp of Chinese fir harvested by intermediate thinning was analyzed. The results show that the apparent viscosity of pulp changed along with the beating degree, pulp consistency and shearing velocity. With the increasing of pulp consistenc...

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Bibliographic Details
Published in:Journal of forestry research 2006-06, Vol.17 (2), p.145-149
Main Authors: Qiu, Ren-hui, Wang, Ke-qi, Huang, Zu-tai
Format: Article
Language:English
Subjects:
Consistency
Cunninghamia lanceolata
Forestry
Newtonian fluids
Non Newtonian fluids
Pulp
Rheological properties
Rheology
Shearing
Thinning
Trees
Velocity
Viscosity
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Summary:The rheological behavior of low consistency thermomechanical pulp of Chinese fir harvested by intermediate thinning was analyzed. The results show that the apparent viscosity of pulp changed along with the beating degree, pulp consistency and shearing velocity. With the increasing of pulp consistency, the apparent viscosity of pulp increased gradually. Beating degree of pulp had an effect on micro-structure of pulp. The apparent viscosity of pulp declined as beating degree of pulp increased, and the apparent viscosity of pulp fell along with the shearing velocity increasing. Based on the results, the rheological models are set up. The models showed that the fluid types of the low consistency pulp could be described as pseudoplastics fluids (non-Newtonian fluids).
ISSN:1007-662X
1993-0607
DOI:10.1007/s11676-006-0034-0