Fracture behavior of core-shell rubber-modified crosslinkable epoxy thermoplastics Academic Article uri icon

abstract

  • The fracture behavior of a core-shell rubber (CSR) modified cross-linkable epoxy thermoplastic (CET) system, which exhibits high rigidity, high Tg, and low crosslink density characteristics, is examined. The toughening mechanisms in this modified CET system are found to be cavitation of the CSR particles, followed by formation of extended shear banding around the advancing crack. With an addition of only 5 wt.% CSR, the modified CET possesses a greater than five-fold increase in fracture toughness (GIC) as well as greatly improved fatigue crack propagation resistance properties, with respect to those of the neat resin equivalents. The fracture mechanisms observed under static loading and under fatigue cyclic loading are compared and discussed. © 1994 Steinkopff-Verlag.

author list (cited authors)

  • Sue, H., Bertram, J. L., Garcia-Meitin, E. I., Wilchester, J. W., & Walker, L. L.

citation count

  • 28

publication date

  • April 1994