Properties Of PEEK

High temperature resistance: It has a high glass transition temperature (Tg=143 ℃) and melting point (Tm=343 ℃). Its load thermal deformation temperature can reach 316 ℃, and its instantaneous use temperature can reach 300 ℃.
Mechanical characteristics: It has rigidity and flexibility, especially outstanding fatigue resistance under alternating stress, comparable to alloy materials.
Self lubrication: It has excellent sliding characteristics, and is suitable for occasions where low friction coefficient and wear resistance are strictly required. Especially, the self lubrication performance of PEEK modified with carbon fiber and graphite in a certain proportion is better.
Corrosion resistance: except for concentrated sulfuric acid, PEEK is insoluble in any solvent, strong acid and alkali, and resistant to hydrolysis, with high chemical stability.
Flame retardancy: self extinguishing, even without any flame retardant, it can reach the level 94V-0 of UL standard.
Machinability: It has good high-temperature fluidity and high thermal decomposition temperature. It can be processed in many ways: injection molding, extrusion molding, molding and melt spinning.
Peel resistance: It has good peel resistance, so it can be made into very thin coated wire or electromagnetic wire, and can be used under harsh conditions.
Fatigue resistance: It has the best fatigue resistance among all resins.
Irradiation resistance: The ability of resisting high radiation is very strong, surpassing the polystyrene with the best irradiation resistance among general resins. Can be made into γ When the irradiation dose reaches 1100Mrad, the high performance of good insulation capacity can still be maintained.
Hydrolysis resistance: PEEK and its composites are not affected by the chemistry of water and high-pressure water vapor, and the products made of this material can still maintain excellent properties when continuously used in high-temperature and high-pressure water.
Smoke generation: PEEK has the lowest smoke generation in plastics.
Toxic gas emission: PEEK is the same as many organic materials. During high-temperature decomposition, PEEK mainly produces carbon dioxide and carbon monoxide. The British aircraft test standard BSS 7239 can be used to detect the emission of extremely low concentrations of toxic gas. This detection process requires 100 grams of samples to be completely burned in a space of 1 cubic meter, and then analyze the toxic gas generated therein, The toxicity index is defined as the ratio of the concentration of toxic gas generated under normal conditions to the lethal dose of 30 minutes. The index of PEEK450G is 0.22, and no acid gas is detected.
Insulation stability: It has good electrical insulation performance and can be maintained to a very high temperature range. The dielectric loss is also very small at high frequencies.