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EXPERIMENTAL INVESTIGATION OF THE AXIAL IMPREGNATION OF ORIENTED FIBER-BUNDLES BY CAPILLARY FORCES
Date
1991-05-01
Author
BAYRAMLI, E
POWELL, RL
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Capillary impregnation of a viscous liquid into carbon fiber bundles is investigated experimentally. Axial impregnation is examined in which flow occurs primarily parallel to the fibers' axes. For silicone oils, as well as for a curing epoxy system, the kinetics of axial impregnation follow closely h-alpha-t1/2, where h is the average displacement of the advancing front and t is the time of impregnation. The impregnation rates are higher than those predicted by theoretical models based upon simple geometries. The rates are strongly influenced by the pore size distribution in the fiber bundles. At a given overall average porosity, higher rates of impregnation are observed for samples having a higher pore heterogeneity than those with a narrow distribution of pore sizes. An analysis of the experimental data is presented which allows the effective pore size distribution to be calculated.
URI
https://hdl.handle.net/11511/65950
Journal
COLLOIDS AND SURFACES
DOI
https://doi.org/10.1016/0166-6622(91)80115-5
Collections
Department of Chemistry, Article
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BibTeX
E. BAYRAMLI and R. POWELL, “EXPERIMENTAL INVESTIGATION OF THE AXIAL IMPREGNATION OF ORIENTED FIBER-BUNDLES BY CAPILLARY FORCES,”
COLLOIDS AND SURFACES
, vol. 56, pp. 83–100, 1991, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/65950.