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- Title
Significance of the heating rate on the physical properties of carbonized maple wood.
- Authors
Xinfeng Xie; Barry Goodell; Yuhui Qian; Michael Peterson; Jody Jellison
- Abstract
AbstractEffects of the heating rate on the physical properties of carbonized wood were investigated by comparing the dimensional shrinkage, electrical resistivity, Young's modulus, and the evolution of turbostratic crystallites in maple hardwood samples carbonized at 600°C, 800°C, and 1000°C under heating regimes of 3°C h-1and 60°C h-1. Important carbonized wood properties that developed at high temperature and high heating rates could also be produced at slow heating rates and lower temperatures. Furthermore, slow heating rates promoted the formation and growth of graphene sheets in turbostratic crystallites, which had a significant influence on the electrical resistivity and Young's modulus of the carbonized wood. The results indicate that the graphene sheets of turbostratic crystallites formed during wood carbonization were arranged parallel to the axial direction of wood cells and at an angle to the circumference of wood cells in the cross-sectional plane. With regard to the production of carbon products, a decrease in the heating rate may be beneficial for char properties and the prevention of crack production during manufacture of large monolithic carbon specimens from wood and wood-based materials.
- Subjects
PROPERTIES of matter; HARDWOODS; TEMPERATURE; CARBONIZATION; CARBON &; graphite products; CARBON
- Publication
Holzforschung: International Journal of the Biology, Chemistry, Physics, & Technology of Wood, 2008, Vol 62, Issue 5, p591
- ISSN
0018-3830
- Publication type
Article
- DOI
10.1515/HF.2008.090