PEI (Polyetherimide)

The main properties of PEI include:

● High temperature resistance: PEI can maintain good performance at high temperatures, with its heat distortion temperature exceeding 200°C and continuous application temperature exceeding 170°C.
● Dimensional stability: PEI has very good dimensional stability and can be used to manufacture precision parts and assemblies.
● Chemical Resistance: PEI is highly resistant to most chemicals, including most hydrocarbons, alcohols, and all halogenated solvents.
● Flame retardancy: PEI has high flame retardancy, its oxygen index is greater than 4.7, low smoke emission, and meets the UL94V-0/5V standard.
● Electrical properties: PEI has excellent electrical properties, with stable dielectric constant and dielectric loss and extremely high dielectric strength over a wide frequency and temperature range.
● Strength and rigidity: PEI has high strength and rigidity and can be used to manufacture parts and components that need to withstand heavy loads or high stress.
● Transparency: PEI is transparent and can be used to manufacture parts and components that require transparency.
● Wear resistance: PEI also has good wear resistance and can maintain its performance in friction and wear environments.
● Low friction coefficient: PEI has a low friction coefficient, which can reduce friction and wear and increase the service life of the product.
● Hygroscopicity: PEI has low absorption of moisture and can maintain its performance in humid environments.

The main application areas of PEI include:

● Aerospace field: PEI materials are widely used in the aerospace field due to their high temperature stability, high strength, high rigidity and corrosion resistance. It can be used to manufacture components such as blades, turbine disks, bearings and seals for aircraft engines, as well as components such as combustion chambers and nozzles for rocket engines.
● Automotive industry: PEI materials are widely used in the automotive industry due to their high strength, light weight and wear resistance. It can be used to manufacture components such as intake manifolds, exhaust manifolds, turbochargers and cooling systems for automobile engines, as well as components such as brake pads and brake discs for automobile braking systems.
● Medical field: PEI materials are widely used in the medical field due to their advantages of good biocompatibility, biological inertness, heat resistance and high mechanical strength. It can be used to make medical devices such as artificial joints, dental restorative materials, heart valves and stents.
● Electrical appliance field: PEI material has good electrical insulation properties and high temperature resistance, so it is often used in the manufacture of electrical components, electronic devices, cables and other products. For example, in electronic products such as mobile phones and tablet computers, PEI materials are widely used in battery connectors, vibration motors, camera brackets and other components.