Abstract:Kevlar fibers were modified by mechanical method and ultrasonic treated with different time, respec鄄
tively. The effects of the two methods on the surface morphology of fibers, the dispersion of fibers within EPDM, and
the mechanical and anti鄄ablative properties of EPDM composites were investigated. Results showed that the roughness
was remarkably increased for the fibers treated by the two methods basing on different mechanism. The mechanical
and anti鄄ablative properties of EPDM composites (11. 3 MPa and 1. 2 mm, respectively) are superior to that of EPDM
composites filled with ultrasonic鄄treated Kevlar fibers, which is because of the homogeneous dispersion of fibers within
EPDM phase.
