
160 HIGH PERFORMANCE POLYMERS
nanofillers are used. PEEK polymer filled with nano-
sized silica or alumina fillers of 15–30 nm exhibit an
improvement of the mechanical properties by 20–50%
[35]. The agglomeration tendency can be somewhat
diminished by a modification of the surface of the
fillers with stearic acid [36].
6.5 Applications
PEEK derivatives have significant commercial util-
ity as plastics, especially as molded articles and as
composites with glass, carbon, and Kevlar fibers for
a variety of structural applications, including the
aerospace and general engineering industries. PEEK
also finds applications as extruded rods and profiles
for manufacture of ...