Compared to other aerospace materials, PEEK material has the following advantages:
-High specific strength: PEEK has a specific strength of about 8 times that of aluminum alloy. While meeting the strength requirements, it can significantly reduce the weight of the material, which is crucial for achieving lightweighting of aerospace components, helping to improve fuel efficiency, increase range, and payload
-Good heat resistance: PEEK has a melting point of up to 343 ℃, a glass transition temperature of 143 ℃, and a long-term use temperature of up to 260 ℃. Its short-term use temperature can reach 300 ℃, and it can maintain stable mechanical properties and dimensional stability in high temperature environments, which is superior to metal materials such as aluminum alloys. It can be used to manufacture components in high-temperature areas such as near engines
-Strong corrosion resistance: PEEK has excellent corrosion resistance to most organic solvents, strong acids, strong alkalis and other chemicals, and can resist various corrosive media that may come into contact with the aerospace industry, such as fuel, lubricants, hydraulic oil, etc., improving the service life and reliability of components
-Excellent mechanical properties: PEEK has high tensile strength, high elastic modulus, and high hardness, excellent impact resistance and creep resistance. Its fatigue resistance is outstanding among all plastics, comparable to alloy materials, and can withstand high loads and complex stresses during aerospace flight
-Good processing performance: PEEK has good high-temperature flowability and high thermal decomposition temperature. It can be processed by various methods such as injection molding, extrusion molding, and compression molding, and can produce complex shaped components to meet the needs of aerospace industry for different geometric shapes of components. It can also reduce processing costs and cycles
-Excellent tribological performance: PEEK has certain self-lubricating properties, low friction coefficient, extremely low wear rate, excellent resistance to sliding wear and micro motion wear, and can maintain good tribological performance at 250 ℃. It can be used to manufacture moving parts that require low friction and high wear resistance, such as bearings, gears, etc., reducing component wear and energy loss
-Reliable insulation performance: PEEK has high volume resistivity and surface resistivity, and can maintain good insulation performance in a wide temperature range and different environmental conditions, ensuring the normal operation and safety of aerospace electronic equipment, preventing electrical faults and electromagnetic interference
-Good biocompatibility: Non toxic, it is the best long-term bone transplant material certified by the US FDA. It will not release toxic metal ions or particles that may cause allergies or toxic effects like metal implants that corrode in the body. It can be used to manufacture aerospace medical device components or related components in life support systems that come into contact with the human body
-Strong radiation resistance: chemically stable, excellent radiation resistance, able to withstand 1100mrad radiation dose without damage, resistant to gamma rays and electron beam radiation, suitable for some special application scenarios in aerospace, such as satellites, spacecraft, etc. facing radiation problems in the space environment
**PEEK has high dimensional stability: its coefficient of thermal expansion is small, and the dimensional stability of the product is close to that of aluminum metal. In the manufacturing of high-precision components in aerospace, it can ensure the dimensional accuracy and fitting accuracy of the components under different temperature conditions, improving the reliability and performance of the entire system
