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Polyether ether ketone is a high-performance engineering plastic, widely used in aerospace, automotive, medical, and other fields due to its excellent physical, chemical, and mechanical properties. This article will explore in detail the advantages of PEEK composite material to help engineers and designers better understand the characteristics of this material.
High Strength and High Stiffness
PEEK composite material have extremely high strength and stiffness, with a tensile strength of up to 90MPa. They have low water absorption, dimensional stability, excellent gloss, and chemical corrosion resistance. Homopolymer and copolymer are the two main types of POM, the former having higher density, crystallinity, and melting point but poorer thermal stability; the latter exhibits superior thermal stability and resistance to acids and alkalis.
Thermal Properties
PEEK composite material have relatively poor thermal stability and can decompose at high temperatures, releasing harmful gases. Therefore, it is particularly important to control the temperature during processing.
Chemical Properties
PEEK composite material are resistant to organic solvents, fuels, and lubricants, and can withstand the corrosion of various chemicals. However, they are not resistant to strong acids and bases and are prone to creep and stress cracking in these environments.
Electrical Properties
PEEK has excellent electrical insulation properties, almost unaffected by temperature and humidity. Its dielectric constant and dielectric loss change very little over a wide frequency range, and it has excellent arc resistance, making it suitable for electrical and electronic fields.
Mechanical Properties
The mechanical properties of PEEK composite material are similar to those of metal materials, with high strength and stiffness. Its tensile strength and flexural strength make it an ideal choice to replace metals such as copper, zinc, and steel.
Friction and Wear Properties
PEEK composite material have excellent self-lubrication and wear resistance, with a low coefficient of friction, making them suitable for manufacturing bearings, gears, and other components that require frequent movement and friction.
Excellent High-Temperature Resistance
PEEK has very high heat resistance, with a long-term use temperature of up to 250°C and short-term heat resistance up to 300°C. This allows PEEK composite material to maintain good mechanical properties and dimensional stability in high-temperature environments.
Good Mechanical Properties
PEEK's mechanical properties are similar to those of metal materials, with high strength and stiffness. Its tensile strength and flexural strength make it an ideal choice to replace metals such as copper, zinc, and steel. In addition, PEEK composite material have good creep resistance and fatigue resistance, enabling them to maintain stable performance under long-term loads.
Excellent Wear Resistance
PEEK has outstanding self-lubrication and wear resistance, with a low coefficient of friction, making it suitable for manufacturing bearings, gears, and other components that require frequent movement and friction. By adding glass fibers or inorganic fillers, the wear resistance and dimensional stability of PEEK composite material can be further enhanced.
Good Chemical Stability
PEEK is resistant to organic solvents, fuels, and lubricants, and can withstand the corrosion of various chemicals. This makes PEEK composite material widely applicable in fields such as chemical and pharmaceutical industries.
Excellent Electrical Insulation
PEEK composite material have excellent electrical insulation, almost unaffected by temperature and humidity. Its dielectric constant and dielectric loss change very little over a wide frequency range, and it has excellent arc resistance, making it suitable for electrical and electronic fields.
With its excellent high-temperature resistance, good mechanical properties, and chemical stability, PEEK composite material occupy an important position in various fields. In the future, with the advancement of technology, the modification research and technological improvements of PEEK composite material will continue to progress, providing strong support for their application in more fields.
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