Polymers for heavy
- High temp. crystalline t’plastic resin
-Its wholly aromatic structure contributes to its high temp.
Since PEEK™ polymer is semi-crystalline, it is insoluble
in all common solvents and has excellent resistance to
a very wide range of organic and inorganic liquids.
• Material Characteristics: Very high
continuous use temperature. Outstanding
chemical resistance. Outstanding wear
resistance. Excellent hydrolysis
resistance. Excellent mechanical
properties. Very low flammability and
smoke generation. Resistant to high levels
of gamma radiation.
• PEEK™ polymer is increasingly used in
the aerospace industry as a replacement
for metal components, because it
combines all these characteristics with
• There are many PEEK™ polymer
applications in the aerospace industry,
such as in-engine, aircraft exterior and
aircraft interior components.
Polyetheretherketone (PEEK™) is an engineering thermoplastic
which exhibits excellent long- and short-term heat resistance.
This semicrystalline material also features inherent flame retardancy.
• PEEK™ has good resistance to most strong and
weak acids, alkalis and organic solvents.
• For aerospace applications, PEEK™'s superior
flame retardancy is mandatory for cabin interior
• The KETRON PEEK family of materials is based
on polyetheretherketone resin. This semi-
crystalline advanced material exhibits a unique
combination of high mechanical properties,
temperature resistance and excellent chemical
resistance, making it the most popular advanced
• Aircraft Interior
• The aerospace industry requires
construction materials which are light in
weight, have excellent physical and
thermal characteristics, and reduce the
hazard to passengers and crew in the
event of a fire.
• PEEK exhibits very low smoke and toxic
gas emission when exposed to flame.
• The key performance parameters for most in-
engine applications of PEEK™ polymer are the
ability to survive high temperatures and the
tribological interaction of dry and lubricated
• Tribology may be defined in terms of the
interfacial friction and wear of material surfaces
in relative motion. Generally, thermoplastics
which experience demanding tribological
contacts undergo excessive localized heating,
resulting in partial melting and material failure.
• Compounds based on PEEK polymer, are used
to form tribological components due to their
outstanding resistance to wear under high
pressure and high velocity conditions.
• PEEK™ polymer has a continuous operating
temperature of 500°F (260°C) (UL746B) and
retains a high level of physical properties close
to the melting temperature of 645°F (343°C).
• Aircraft Exterior
• The wear performance of the exterior
components of jet aircraft depends on the
impact of the material surfaces with rain or
particulate matter in the atmosphere.
Independent testing has shown that, of the
materials tested, only high grade ceramics
and special metal alloys show superior
rain erosion resistance to PEEK™ polymer
• Leanding materials among the high-temp
• Allow continuous operating temp. of 250C
• Tg and Tm depends on the ratio of the
ketone to ether groups
• Various complicated configurations can be
obtained such as PEKEKK
• Characterized as it favourable bahavior in
• The density of PAEK fumes in fire is the
lowest of the TPs
• It has low corrosive and toxic fumes
• The quantity of the heat released upon the
outbreak of a fire is quite low-meet
aviation regulations for interior use
• Engineering thermoplastic
• Excellent dimensional stability, high
strength at high temp., & good impact
• Creep resistance is among the best of the
• Dimensional stability is extremely good
• Extremely resistant to flame & quite low
• However, PAI is attacked by some acids at
high temp., and by steam at high pressure
• Used in structural parts which require high
strength at high temp, aerospace product,
underground environment, automotive
parts; timing gear, piston rigs, etc.
Liquid Crystal Polymer
• Sometimes called super polymers
• Outstanding strength at extreme temp.,
excellent mech. properties retention after
exposure to weathering, good dielectric
properties, and low CTE
• Available in amorphous and crystalline
Liquid Crystal Polymer (LCP)
• Major application of LCPs are in metal and
ceramic replacement that require
resistance to high temperature.
• Used in automotive & aerospace part- that
require ability to withstand high temp. &