PEEK has a higher glass transition temperature and melting point (334℃). It is one of the reasons that it can be a reliable application in the requirement of the heat. Its heat load variable-temperature can be 316℃, continuous use temperature is 260℃.
PEEK is the plastic that strikes a balance between toughness and rigidity. Especially, it has an excellent fatigue resistance against alternating stress that is the most talented of all plastics, and it can be comparable with alloys.
PEEK has outstanding sliding characteristics in all plastics; it is suitable for stringent requirements for low coefficient of friction and resistance to friction used. Especially, the self-lubricating properties of PEEK will be better if it is modified by carbon fiber and graphite mixed in the proportion of each of them.
4.Chemical Resistance (corrosion resistance)
PEEK has excellent chemical resistance. In ordinary chemicals, it can be dissolved or damaged only by concentrated sulfuric acid; its corrosion resistance is similar to those of steel and nickel.
PEEK is a very stable polymer. The 1.45mm thick samples can achieve the highest standard of fire retardant without adding any fire retardant.
PEEK has good stripping resistance; therefore, it can be made into thin wires or electromagnetic wire coating, and it can be used in harsh conditions.
PEEK has the best fatigue resistance among all resins.
PEEK has a very strong γ irradiated resistance, which is stronger than the radiation resistance of polystyrene, which is the best one among generic resin. It can be made into high-performance wiring that can still make good insulation capability when γ irradiation is at doses of 1100Mrad.
PEEK and its composites will not be affected chemically by water and high-pressure steam. The products that are made from this material will maintain the outstanding characteristics in continuous use in high temperature and high pressure water.
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